/*
* Mesa 3-D graphics library
*
* Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
* Copyright (C) 2009 VMware, Inc. All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*/
/**
* \file teximage.c
* Texture image-related functions.
*/
#include <stdbool.h>
#include "glheader.h"
#include "bufferobj.h"
#include "context.h"
#include "enums.h"
#include "fbobject.h"
#include "framebuffer.h"
#include "hash.h"
#include "image.h"
#include "imports.h"
#include "macros.h"
#include "mipmap.h"
#include "multisample.h"
#include "pixelstore.h"
#include "state.h"
#include "texcompress.h"
#include "texcompress_cpal.h"
#include "teximage.h"
#include "texobj.h"
#include "texstate.h"
#include "texstorage.h"
#include "textureview.h"
#include "mtypes.h"
#include "glformats.h"
#include "texstore.h"
#include "pbo.h"
/**
* State changes which we care about for glCopyTex[Sub]Image() calls.
* In particular, we care about pixel transfer state and buffer state
* (such as glReadBuffer to make sure we read from the right renderbuffer).
*/
#define NEW_COPY_TEX_STATE (_NEW_BUFFERS | _NEW_PIXEL)
/**
* Returns a corresponding internal floating point format for a given base
* format as specifed by OES_texture_float. In case of GL_FLOAT, the internal
* format needs to be a 32 bit component and in case of GL_HALF_FLOAT_OES it
* needs to be a 16 bit component.
*
* For example, given base format GL_RGBA, type GL_FLOAT return GL_RGBA32F_ARB.
*/
static GLenum
adjust_for_oes_float_texture(const struct gl_context *ctx,
GLenum format, GLenum type)
{
switch (type) {
case GL_FLOAT:
if (ctx->Extensions.OES_texture_float) {
switch (format) {
case GL_RGBA:
return GL_RGBA32F;
case GL_RGB:
return GL_RGB32F;
case GL_ALPHA:
return GL_ALPHA32F_ARB;
case GL_LUMINANCE:
return GL_LUMINANCE32F_ARB;
case GL_LUMINANCE_ALPHA:
return GL_LUMINANCE_ALPHA32F_ARB;
default:
break;
}
}
break;
case GL_HALF_FLOAT_OES:
if (ctx->Extensions.OES_texture_half_float) {
switch (format) {
case GL_RGBA:
return GL_RGBA16F;
case GL_RGB:
return GL_RGB16F;
case GL_ALPHA:
return GL_ALPHA16F_ARB;
case GL_LUMINANCE:
return GL_LUMINANCE16F_ARB;
case GL_LUMINANCE_ALPHA:
return GL_LUMINANCE_ALPHA16F_ARB;
default:
break;
}
}
break;
default:
break;
}
return format;
}
/**
* Install gl_texture_image in a gl_texture_object according to the target
* and level parameters.
*
* \param tObj texture object.
* \param target texture target.
* \param level image level.
* \param texImage texture image.
*/
static void
set_tex_image(struct gl_texture_object *tObj,
GLenum target, GLint level,
struct gl_texture_image *texImage)
{
const GLuint face = _mesa_tex_target_to_face(target);
assert(tObj);
assert(texImage);
if (target == GL_TEXTURE_RECTANGLE_NV || target == GL_TEXTURE_EXTERNAL_OES)
assert(level == 0);
tObj->Image[face][level] = texImage;
/* Set the 'back' pointer */
texImage->TexObject = tObj;
texImage->Level = level;
texImage->Face = face;
}
/**
* Allocate a texture image structure.
*
* Called via ctx->Driver.NewTextureImage() unless overriden by a device
* driver.
*
* \return a pointer to gl_texture_image struct with all fields initialized to
* zero.
*/
struct gl_texture_image *
_mesa_new_texture_image( struct gl_context *ctx )
{
(void) ctx;
return CALLOC_STRUCT(gl_texture_image);
}
/**
* Free a gl_texture_image and associated data.
* This function is a fallback called via ctx->Driver.DeleteTextureImage().
*
* \param texImage texture image.
*
* Free the texture image structure and the associated image data.
*/
void
_mesa_delete_texture_image(struct gl_context *ctx,
struct gl_texture_image *texImage)
{
/* Free texImage->Data and/or any other driver-specific texture
* image storage.
*/
assert(ctx->Driver.FreeTextureImageBuffer);
ctx->Driver.FreeTextureImageBuffer( ctx, texImage );
free(texImage);
}
/**
* Test if a target is a proxy target.
*
* \param target texture target.
*
* \return GL_TRUE if the target is a proxy target, GL_FALSE otherwise.
*/
GLboolean
_mesa_is_proxy_texture(GLenum target)
{
unsigned i;
static const GLenum targets[] = {
GL_PROXY_TEXTURE_1D,
GL_PROXY_TEXTURE_2D,
GL_PROXY_TEXTURE_3D,
GL_PROXY_TEXTURE_CUBE_MAP,
GL_PROXY_TEXTURE_RECTANGLE,
GL_PROXY_TEXTURE_1D_ARRAY,
GL_PROXY_TEXTURE_2D_ARRAY,
GL_PROXY_TEXTURE_CUBE_MAP_ARRAY,
GL_PROXY_TEXTURE_2D_MULTISAMPLE,
GL_PROXY_TEXTURE_2D_MULTISAMPLE_ARRAY
};
/*
* NUM_TEXTURE_TARGETS should match number of terms above, except there's no
* proxy for GL_TEXTURE_BUFFER and GL_TEXTURE_EXTERNAL_OES.
*/
STATIC_ASSERT(NUM_TEXTURE_TARGETS == ARRAY_SIZE(targets) + 2);
for (i = 0; i < ARRAY_SIZE(targets); ++i)
if (target == targets[i])
return GL_TRUE;
return GL_FALSE;
}
/**
* Test if a target is an array target.
*
* \param target texture target.
*
* \return true if the target is an array target, false otherwise.
*/
bool
_mesa_is_array_texture(GLenum target)
{
switch (target) {
case GL_TEXTURE_1D_ARRAY:
case GL_TEXTURE_2D_ARRAY:
case GL_TEXTURE_CUBE_MAP_ARRAY:
case GL_TEXTURE_2D_MULTISAMPLE_ARRAY:
return true;
default:
return false;
};
}
/**
* Test if a target is a cube map.
*
* \param target texture target.
*
* \return true if the target is a cube map, false otherwise.
*/
bool
_mesa_is_cube_map_texture(GLenum target)
{
switch(target) {
case GL_TEXTURE_CUBE_MAP:
case GL_TEXTURE_CUBE_MAP_ARRAY:
return true;
default:
return false;
}
}
/**
* Return the proxy target which corresponds to the given texture target
*/
static GLenum
proxy_target(GLenum target)
{
switch (target) {
case GL_TEXTURE_1D:
case GL_PROXY_TEXTURE_1D:
return GL_PROXY_TEXTURE_1D;
case GL_TEXTURE_2D:
case GL_PROXY_TEXTURE_2D:
return GL_PROXY_TEXTURE_2D;
case GL_TEXTURE_3D:
case GL_PROXY_TEXTURE_3D:
return GL_PROXY_TEXTURE_3D;
case GL_TEXTURE_CUBE_MAP_POSITIVE_X:
case GL_TEXTURE_CUBE_MAP_NEGATIVE_X:
case GL_TEXTURE_CUBE_MAP_POSITIVE_Y:
case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y:
case GL_TEXTURE_CUBE_MAP_POSITIVE_Z:
case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z:
case GL_TEXTURE_CUBE_MAP:
case GL_PROXY_TEXTURE_CUBE_MAP:
return GL_PROXY_TEXTURE_CUBE_MAP;
case GL_TEXTURE_RECTANGLE_NV:
case GL_PROXY_TEXTURE_RECTANGLE_NV:
return GL_PROXY_TEXTURE_RECTANGLE_NV;
case GL_TEXTURE_1D_ARRAY_EXT:
case GL_PROXY_TEXTURE_1D_ARRAY_EXT:
return GL_PROXY_TEXTURE_1D_ARRAY_EXT;
case GL_TEXTURE_2D_ARRAY_EXT:
case GL_PROXY_TEXTURE_2D_ARRAY_EXT:
return GL_PROXY_TEXTURE_2D_ARRAY_EXT;
case GL_TEXTURE_CUBE_MAP_ARRAY:
case GL_PROXY_TEXTURE_CUBE_MAP_ARRAY:
return GL_PROXY_TEXTURE_CUBE_MAP_ARRAY;
case GL_TEXTURE_2D_MULTISAMPLE:
case GL_PROXY_TEXTURE_2D_MULTISAMPLE:
return GL_PROXY_TEXTURE_2D_MULTISAMPLE;
case GL_TEXTURE_2D_MULTISAMPLE_ARRAY:
case GL_PROXY_TEXTURE_2D_MULTISAMPLE_ARRAY:
return GL_PROXY_TEXTURE_2D_MULTISAMPLE_ARRAY;
default:
_mesa_problem(NULL, "unexpected target in proxy_target()");
return 0;
}
}
/**
* Get a texture image pointer from a texture object, given a texture
* target and mipmap level. The target and level parameters should
* have already been error-checked.
*
* \param texObj texture unit.
* \param target texture target.
* \param level image level.
*
* \return pointer to the texture image structure, or NULL on failure.
*/
struct gl_texture_image *
_mesa_select_tex_image(const struct gl_texture_object *texObj,
GLenum target, GLint level)
{
const GLuint face = _mesa_tex_target_to_face(target);
assert(texObj);
assert(level >= 0);
assert(level < MAX_TEXTURE_LEVELS);
return texObj->Image[face][level];
}
/**
* Like _mesa_select_tex_image() but if the image doesn't exist, allocate
* it and install it. Only return NULL if passed a bad parameter or run
* out of memory.
*/
struct gl_texture_image *
_mesa_get_tex_image(struct gl_context *ctx, struct gl_texture_object *texObj,
GLenum target, GLint level)
{
struct gl_texture_image *texImage;
if (!texObj)
return NULL;
texImage = _mesa_select_tex_image(texObj, target, level);
if (!texImage) {
texImage = ctx->Driver.NewTextureImage(ctx);
if (!texImage) {
_mesa_error(ctx, GL_OUT_OF_MEMORY, "texture image allocation");
return NULL;
}
set_tex_image(texObj, target, level, texImage);
}
return texImage;
}
/**
* Return pointer to the specified proxy texture image.
* Note that proxy textures are per-context, not per-texture unit.
* \return pointer to texture image or NULL if invalid target, invalid
* level, or out of memory.
*/
static struct gl_texture_image *
get_proxy_tex_image(struct gl_context *ctx, GLenum target, GLint level)
{
struct gl_texture_image *texImage;
GLuint texIndex;
if (level < 0)
return NULL;
switch (target) {
case GL_PROXY_TEXTURE_1D:
if (level >= ctx->Const.MaxTextureLevels)
return NULL;
texIndex = TEXTURE_1D_INDEX;
break;
case GL_PROXY_TEXTURE_2D:
if (level >= ctx->Const.MaxTextureLevels)
return NULL;
texIndex = TEXTURE_2D_INDEX;
break;
case GL_PROXY_TEXTURE_3D:
if (level >= ctx->Const.Max3DTextureLevels)
return NULL;
texIndex = TEXTURE_3D_INDEX;
break;
case GL_PROXY_TEXTURE_CUBE_MAP:
if (level >= ctx->Const.MaxCubeTextureLevels)
return NULL;
texIndex = TEXTURE_CUBE_INDEX;
break;
case GL_PROXY_TEXTURE_RECTANGLE_NV:
if (level > 0)
return NULL;
texIndex = TEXTURE_RECT_INDEX;
break;
case GL_PROXY_TEXTURE_1D_ARRAY_EXT:
if (level >= ctx->Const.MaxTextureLevels)
return NULL;
texIndex = TEXTURE_1D_ARRAY_INDEX;
break;
case GL_PROXY_TEXTURE_2D_ARRAY_EXT:
if (level >= ctx->Const.MaxTextureLevels)
return NULL;
texIndex = TEXTURE_2D_ARRAY_INDEX;
break;
case GL_PROXY_TEXTURE_CUBE_MAP_ARRAY:
if (level >= ctx->Const.MaxCubeTextureLevels)
return NULL;
texIndex = TEXTURE_CUBE_ARRAY_INDEX;
break;
case GL_PROXY_TEXTURE_2D_MULTISAMPLE:
if (level > 0)
return 0;
texIndex = TEXTURE_2D_MULTISAMPLE_INDEX;
break;
case GL_PROXY_TEXTURE_2D_MULTISAMPLE_ARRAY:
if (level > 0)
return 0;
texIndex = TEXTURE_2D_MULTISAMPLE_ARRAY_INDEX;
break;
default:
return NULL;
}
texImage = ctx->Texture.ProxyTex[texIndex]->Image[0][level];
if (!texImage) {
texImage = ctx->Driver.NewTextureImage(ctx);
if (!texImage) {
_mesa_error(ctx, GL_OUT_OF_MEMORY, "proxy texture allocation");
return NULL;
}
ctx->Texture.ProxyTex[texIndex]->Image[0][level] = texImage;
/* Set the 'back' pointer */
texImage->TexObject = ctx->Texture.ProxyTex[texIndex];
}
return texImage;
}
/**
* Get the maximum number of allowed mipmap levels.
*
* \param ctx GL context.
* \param target texture target.
*
* \return the maximum number of allowed mipmap levels for the given
* texture target, or zero if passed a bad target.
*
* \sa gl_constants.
*/
GLint
_mesa_max_texture_levels(struct gl_context *ctx, GLenum target)
{
switch (target) {
case GL_TEXTURE_1D:
case GL_PROXY_TEXTURE_1D:
case GL_TEXTURE_2D:
case GL_PROXY_TEXTURE_2D:
return ctx->Const.MaxTextureLevels;
case GL_TEXTURE_3D:
case GL_PROXY_TEXTURE_3D:
return ctx->Const.Max3DTextureLevels;
case GL_TEXTURE_CUBE_MAP:
case GL_TEXTURE_CUBE_MAP_POSITIVE_X:
case GL_TEXTURE_CUBE_MAP_NEGATIVE_X:
case GL_TEXTURE_CUBE_MAP_POSITIVE_Y:
case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y:
case GL_TEXTURE_CUBE_MAP_POSITIVE_Z:
case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z:
case GL_PROXY_TEXTURE_CUBE_MAP:
return ctx->Extensions.ARB_texture_cube_map
? ctx->Const.MaxCubeTextureLevels : 0;
case GL_TEXTURE_RECTANGLE_NV:
case GL_PROXY_TEXTURE_RECTANGLE_NV:
return ctx->Extensions.NV_texture_rectangle ? 1 : 0;
case GL_TEXTURE_1D_ARRAY_EXT:
case GL_PROXY_TEXTURE_1D_ARRAY_EXT:
case GL_TEXTURE_2D_ARRAY_EXT:
case GL_PROXY_TEXTURE_2D_ARRAY_EXT:
return ctx->Extensions.EXT_texture_array
? ctx->Const.MaxTextureLevels : 0;
case GL_TEXTURE_CUBE_MAP_ARRAY:
case GL_PROXY_TEXTURE_CUBE_MAP_ARRAY:
return _mesa_has_texture_cube_map_array(ctx)
? ctx->Const.MaxCubeTextureLevels : 0;
case GL_TEXTURE_BUFFER:
return (_mesa_has_ARB_texture_buffer_object(ctx) ||
_mesa_has_OES_texture_buffer(ctx)) ? 1 : 0;
case GL_TEXTURE_2D_MULTISAMPLE:
case GL_PROXY_TEXTURE_2D_MULTISAMPLE:
case GL_TEXTURE_2D_MULTISAMPLE_ARRAY:
case GL_PROXY_TEXTURE_2D_MULTISAMPLE_ARRAY:
return (_mesa_is_desktop_gl(ctx) || _mesa_is_gles31(ctx))
&& ctx->Extensions.ARB_texture_multisample
? 1 : 0;
case GL_TEXTURE_EXTERNAL_OES:
/* fall-through */
default:
return 0; /* bad target */
}
}
/**
* Return number of dimensions per mipmap level for the given texture target.
*/
GLint
_mesa_get_texture_dimensions(GLenum target)
{
switch (target) {
case GL_TEXTURE_1D:
case GL_PROXY_TEXTURE_1D:
return 1;
case GL_TEXTURE_2D:
case GL_TEXTURE_RECTANGLE:
case GL_TEXTURE_CUBE_MAP:
case GL_PROXY_TEXTURE_2D:
case GL_PROXY_TEXTURE_RECTANGLE:
case GL_PROXY_TEXTURE_CUBE_MAP:
case GL_TEXTURE_CUBE_MAP_POSITIVE_X:
case GL_TEXTURE_CUBE_MAP_NEGATIVE_X:
case GL_TEXTURE_CUBE_MAP_POSITIVE_Y:
case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y:
case GL_TEXTURE_CUBE_MAP_POSITIVE_Z:
case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z:
case GL_TEXTURE_1D_ARRAY:
case GL_PROXY_TEXTURE_1D_ARRAY:
case GL_TEXTURE_EXTERNAL_OES:
case GL_TEXTURE_2D_MULTISAMPLE:
case GL_PROXY_TEXTURE_2D_MULTISAMPLE:
return 2;
case GL_TEXTURE_3D:
case GL_PROXY_TEXTURE_3D:
case GL_TEXTURE_2D_ARRAY:
case GL_PROXY_TEXTURE_2D_ARRAY:
case GL_TEXTURE_CUBE_MAP_ARRAY:
case GL_PROXY_TEXTURE_CUBE_MAP_ARRAY:
case GL_TEXTURE_2D_MULTISAMPLE_ARRAY:
case GL_PROXY_TEXTURE_2D_MULTISAMPLE_ARRAY:
return 3;
case GL_TEXTURE_BUFFER:
/* fall-through */
default:
_mesa_problem(NULL, "invalid target 0x%x in get_texture_dimensions()",
target);
return 2;
}
}
/**
* Check if a texture target can have more than one layer.
*/
GLboolean
_mesa_tex_target_is_layered(GLenum target)
{
switch (target) {
case GL_TEXTURE_1D:
case GL_PROXY_TEXTURE_1D:
case GL_TEXTURE_2D:
case GL_PROXY_TEXTURE_2D:
case GL_TEXTURE_RECTANGLE:
case GL_PROXY_TEXTURE_RECTANGLE:
case GL_TEXTURE_2D_MULTISAMPLE:
case GL_PROXY_TEXTURE_2D_MULTISAMPLE:
case GL_TEXTURE_BUFFER:
case GL_TEXTURE_CUBE_MAP_POSITIVE_X:
case GL_TEXTURE_CUBE_MAP_NEGATIVE_X:
case GL_TEXTURE_CUBE_MAP_POSITIVE_Y:
case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y:
case GL_TEXTURE_CUBE_MAP_POSITIVE_Z:
case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z:
case GL_TEXTURE_EXTERNAL_OES:
return GL_FALSE;
case GL_TEXTURE_3D:
case GL_PROXY_TEXTURE_3D:
case GL_TEXTURE_CUBE_MAP:
case GL_PROXY_TEXTURE_CUBE_MAP:
case GL_TEXTURE_1D_ARRAY:
case GL_PROXY_TEXTURE_1D_ARRAY:
case GL_TEXTURE_2D_ARRAY:
case GL_PROXY_TEXTURE_2D_ARRAY:
case GL_TEXTURE_CUBE_MAP_ARRAY:
case GL_PROXY_TEXTURE_CUBE_MAP_ARRAY:
case GL_TEXTURE_2D_MULTISAMPLE_ARRAY:
case GL_PROXY_TEXTURE_2D_MULTISAMPLE_ARRAY:
return GL_TRUE;
default:
assert(!"Invalid texture target.");
return GL_FALSE;
}
}
/**
* Return the number of layers present in the given level of an array,
* cubemap or 3D texture. If the texture is not layered return zero.
*/
GLuint
_mesa_get_texture_layers(const struct gl_texture_object *texObj, GLint level)
{
assert(level >= 0 && level < MAX_TEXTURE_LEVELS);
switch (texObj->Target) {
case GL_TEXTURE_1D:
case GL_TEXTURE_2D:
case GL_TEXTURE_RECTANGLE:
case GL_TEXTURE_2D_MULTISAMPLE:
case GL_TEXTURE_BUFFER:
case GL_TEXTURE_EXTERNAL_OES:
return 0;
case GL_TEXTURE_CUBE_MAP:
return 6;
case GL_TEXTURE_1D_ARRAY: {
struct gl_texture_image *img = texObj->Image[0][level];
return img ? img->Height : 0;
}
case GL_TEXTURE_3D:
case GL_TEXTURE_2D_ARRAY:
case GL_TEXTURE_CUBE_MAP_ARRAY:
case GL_TEXTURE_2D_MULTISAMPLE_ARRAY: {
struct gl_texture_image *img = texObj->Image[0][level];
return img ? img->Depth : 0;
}
default:
assert(!"Invalid texture target.");
return 0;
}
}
/**
* Return the maximum number of mipmap levels for the given target
* and the dimensions.
* The dimensions are expected not to include the border.
*/
GLsizei
_mesa_get_tex_max_num_levels(GLenum target, GLsizei width, GLsizei height,
GLsizei depth)
{
GLsizei size;
switch (target) {
case GL_TEXTURE_1D:
case GL_TEXTURE_1D_ARRAY:
case GL_PROXY_TEXTURE_1D:
case GL_PROXY_TEXTURE_1D_ARRAY:
size = width;
break;
case GL_TEXTURE_CUBE_MAP:
case GL_TEXTURE_CUBE_MAP_ARRAY:
case GL_PROXY_TEXTURE_CUBE_MAP:
case GL_PROXY_TEXTURE_CUBE_MAP_ARRAY:
size = width;
break;
case GL_TEXTURE_2D:
case GL_TEXTURE_2D_ARRAY:
case GL_PROXY_TEXTURE_2D:
case GL_PROXY_TEXTURE_2D_ARRAY:
size = MAX2(width, height);
break;
case GL_TEXTURE_3D:
case GL_PROXY_TEXTURE_3D:
size = MAX3(width, height, depth);
break;
case GL_TEXTURE_RECTANGLE:
case GL_TEXTURE_EXTERNAL_OES:
case GL_TEXTURE_2D_MULTISAMPLE:
case GL_TEXTURE_2D_MULTISAMPLE_ARRAY:
case GL_PROXY_TEXTURE_RECTANGLE:
case GL_PROXY_TEXTURE_2D_MULTISAMPLE:
case GL_PROXY_TEXTURE_2D_MULTISAMPLE_ARRAY:
return 1;
default:
assert(0);
return 1;
}
return _mesa_logbase2(size) + 1;
}
#if 000 /* not used anymore */
/*
* glTexImage[123]D can accept a NULL image pointer. In this case we
* create a texture image with unspecified image contents per the OpenGL
* spec.
*/
static GLubyte *
make_null_texture(GLint width, GLint height, GLint depth, GLenum format)
{
const GLint components = _mesa_components_in_format(format);
const GLint numPixels = width * height * depth;
GLubyte *data = (GLubyte *) malloc(numPixels * components * sizeof(GLubyte));
#ifdef DEBUG
/*
* Let's see if anyone finds this. If glTexImage2D() is called with
* a NULL image pointer then load the texture image with something
* interesting instead of leaving it indeterminate.
*/
if (data) {
static const char message[8][32] = {
" X X XXXXX XXX X ",
" XX XX X X X X X ",
" X X X X X X X ",
" X X XXXX XXX XXXXX ",
" X X X X X X ",
" X X X X X X X ",
" X X XXXXX XXX X X ",
" "
};
GLubyte *imgPtr = data;
GLint h, i, j, k;
for (h = 0; h < depth; h++) {
for (i = 0; i < height; i++) {
GLint srcRow = 7 - (i % 8);
for (j = 0; j < width; j++) {
GLint srcCol = j % 32;
GLubyte texel = (message[srcRow][srcCol]=='X') ? 255 : 70;
for (k = 0; k < components; k++) {
*imgPtr++ = texel;
}
}
}
}
}
#endif
return data;
}
#endif
/**
* Set the size and format-related fields of a gl_texture_image struct
* to zero. This is used when a proxy texture test fails.
*/
static void
clear_teximage_fields(struct gl_texture_image *img)
{
assert(img);
img->_BaseFormat = 0;
img->InternalFormat = 0;
img->Border = 0;
img->Width = 0;
img->Height = 0;
img->Depth = 0;
img->Width2 = 0;
img->Height2 = 0;
img->Depth2 = 0;
img->WidthLog2 = 0;
img->HeightLog2 = 0;
img->DepthLog2 = 0;
img->TexFormat = MESA_FORMAT_NONE;
img->NumSamples = 0;
img->FixedSampleLocations = GL_TRUE;
}
/**
* Initialize basic fields of the gl_texture_image struct.
*
* \param ctx GL context.
* \param img texture image structure to be initialized.
* \param width image width.
* \param height image height.
* \param depth image depth.
* \param border image border.
* \param internalFormat internal format.
* \param format the actual hardware format (one of MESA_FORMAT_*)
* \param numSamples number of samples per texel, or zero for non-MS.
* \param fixedSampleLocations are sample locations fixed?
*
* Fills in the fields of \p img with the given information.
* Note: width, height and depth include the border.
*/
static void
init_teximage_fields_ms(struct gl_context *ctx,
struct gl_texture_image *img,
GLsizei width, GLsizei height, GLsizei depth,
GLint border, GLenum internalFormat,
mesa_format format,
GLuint numSamples, GLboolean fixedSampleLocations)
{
GLenum target;
assert(img);
assert(width >= 0);
assert(height >= 0);
assert(depth >= 0);
target = img->TexObject->Target;
img->_BaseFormat = _mesa_base_tex_format( ctx, internalFormat );
assert(img->_BaseFormat != -1);
img->InternalFormat = internalFormat;
img->Border = border;
img->Width = width;
img->Height = height;
img->Depth = depth;
img->Width2 = width - 2 * border; /* == 1 << img->WidthLog2; */
img->WidthLog2 = _mesa_logbase2(img->Width2);
img->NumSamples = 0;
img->FixedSampleLocations = GL_TRUE;
switch(target) {
case GL_TEXTURE_1D:
case GL_TEXTURE_BUFFER:
case GL_PROXY_TEXTURE_1D:
if (height == 0)
img->Height2 = 0;
else
img->Height2 = 1;
img->HeightLog2 = 0;
if (depth == 0)
img->Depth2 = 0;
else
img->Depth2 = 1;
img->DepthLog2 = 0;
break;
case GL_TEXTURE_1D_ARRAY:
case GL_PROXY_TEXTURE_1D_ARRAY:
img->Height2 = height; /* no border */
img->HeightLog2 = 0; /* not used */
if (depth == 0)
img->Depth2 = 0;
else
img->Depth2 = 1;
img->DepthLog2 = 0;
break;
case GL_TEXTURE_2D:
case GL_TEXTURE_RECTANGLE:
case GL_TEXTURE_CUBE_MAP:
case GL_TEXTURE_CUBE_MAP_POSITIVE_X:
case GL_TEXTURE_CUBE_MAP_NEGATIVE_X:
case GL_TEXTURE_CUBE_MAP_POSITIVE_Y:
case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y:
case GL_TEXTURE_CUBE_MAP_POSITIVE_Z:
case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z:
case GL_TEXTURE_EXTERNAL_OES:
case GL_PROXY_TEXTURE_2D:
case GL_PROXY_TEXTURE_RECTANGLE:
case GL_PROXY_TEXTURE_CUBE_MAP:
case GL_TEXTURE_2D_MULTISAMPLE:
case GL_PROXY_TEXTURE_2D_MULTISAMPLE:
img->Height2 = height - 2 * border; /* == 1 << img->HeightLog2; */
img->HeightLog2 = _mesa_logbase2(img->Height2);
if (depth == 0)
img->Depth2 = 0;
else
img->Depth2 = 1;
img->DepthLog2 = 0;
break;
case GL_TEXTURE_2D_ARRAY:
case GL_PROXY_TEXTURE_2D_ARRAY:
case GL_TEXTURE_CUBE_MAP_ARRAY:
case GL_PROXY_TEXTURE_CUBE_MAP_ARRAY:
case GL_TEXTURE_2D_MULTISAMPLE_ARRAY:
case GL_PROXY_TEXTURE_2D_MULTISAMPLE_ARRAY:
img->Height2 = height - 2 * border; /* == 1 << img->HeightLog2; */
img->HeightLog2 = _mesa_logbase2(img->Height2);
img->Depth2 = depth; /* no border */
img->DepthLog2 = 0; /* not used */
break;
case GL_TEXTURE_3D:
case GL_PROXY_TEXTURE_3D:
img->Height2 = height - 2 * border; /* == 1 << img->HeightLog2; */
img->HeightLog2 = _mesa_logbase2(img->Height2);
img->Depth2 = depth - 2 * border; /* == 1 << img->DepthLog2; */
img->DepthLog2 = _mesa_logbase2(img->Depth2);
break;
default:
_mesa_problem(NULL, "invalid target 0x%x in _mesa_init_teximage_fields()",
target);
}
img->MaxNumLevels =
_mesa_get_tex_max_num_levels(target,
img->Width2, img->Height2, img->Depth2);
img->TexFormat = format;
img->NumSamples = numSamples;
img->FixedSampleLocations = fixedSampleLocations;
}
void
_mesa_init_teximage_fields(struct gl_context *ctx,
struct gl_texture_image *img,
GLsizei width, GLsizei height, GLsizei depth,
GLint border, GLenum internalFormat,
mesa_format format)
{
init_teximage_fields_ms(ctx, img, width, height, depth, border,
internalFormat, format, 0, GL_TRUE);
}
/**
* Free and clear fields of the gl_texture_image struct.
*
* \param ctx GL context.
* \param texImage texture image structure to be cleared.
*
* After the call, \p texImage will have no data associated with it. Its
* fields are cleared so that its parent object will test incomplete.
*/
void
_mesa_clear_texture_image(struct gl_context *ctx,
struct gl_texture_image *texImage)
{
ctx->Driver.FreeTextureImageBuffer(ctx, texImage);
clear_teximage_fields(texImage);
}
/**
* Check the width, height, depth and border of a texture image are legal.
* Used by all the glTexImage, glCompressedTexImage and glCopyTexImage
* functions.
* The target and level parameters will have already been validated.
* \return GL_TRUE if size is OK, GL_FALSE otherwise.
*/
GLboolean
_mesa_legal_texture_dimensions(struct gl_context *ctx, GLenum target,
GLint level, GLint width, GLint height,
GLint depth, GLint border)
{
GLint maxSize;
switch (target) {
case GL_TEXTURE_1D:
case GL_PROXY_TEXTURE_1D:
maxSize = 1 << (ctx->Const.MaxTextureLevels - 1); /* level zero size */
maxSize >>= level; /* level size */
if (width < 2 * border || width > 2 * border + maxSize)
return GL_FALSE;
if (!ctx->Extensions.ARB_texture_non_power_of_two) {
if (width > 0 && !_mesa_is_pow_two(width - 2 * border))
return GL_FALSE;
}
return GL_TRUE;
case GL_TEXTURE_2D:
case GL_PROXY_TEXTURE_2D:
case GL_TEXTURE_2D_MULTISAMPLE:
case GL_PROXY_TEXTURE_2D_MULTISAMPLE:
maxSize = 1 << (ctx->Const.MaxTextureLevels - 1);
maxSize >>= level;
if (width < 2 * border || width > 2 * border + maxSize)
return GL_FALSE;
if (height < 2 * border || height > 2 * border + maxSize)
return GL_FALSE;
if (!ctx->Extensions.ARB_texture_non_power_of_two) {
if (width > 0 && !_mesa_is_pow_two(width - 2 * border))
return GL_FALSE;
if (height > 0 && !_mesa_is_pow_two(height - 2 * border))
return GL_FALSE;
}
return GL_TRUE;
case GL_TEXTURE_3D:
case GL_PROXY_TEXTURE_3D:
maxSize = 1 << (ctx->Const.Max3DTextureLevels - 1);
maxSize >>= level;
if (width < 2 * border || width > 2 * border + maxSize)
return GL_FALSE;
if (height < 2 * border || height > 2 * border + maxSize)
return GL_FALSE;
if (depth < 2 * border || depth > 2 * border + maxSize)
return GL_FALSE;
if (!ctx->Extensions.ARB_texture_non_power_of_two) {
if (width > 0 && !_mesa_is_pow_two(width - 2 * border))
return GL_FALSE;
if (height > 0 && !_mesa_is_pow_two(height - 2 * border))
return GL_FALSE;
if (depth > 0 && !_mesa_is_pow_two(depth - 2 * border))
return GL_FALSE;
}
return GL_TRUE;
case GL_TEXTURE_RECTANGLE_NV:
case GL_PROXY_TEXTURE_RECTANGLE_NV:
if (level != 0)
return GL_FALSE;
maxSize = ctx->Const.MaxTextureRectSize;
if (width < 0 || width > maxSize)
return GL_FALSE;
if (height < 0 || height > maxSize)
return GL_FALSE;
return GL_TRUE;
case GL_TEXTURE_CUBE_MAP:
case GL_TEXTURE_CUBE_MAP_POSITIVE_X:
case GL_TEXTURE_CUBE_MAP_NEGATIVE_X:
case GL_TEXTURE_CUBE_MAP_POSITIVE_Y:
case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y:
case GL_TEXTURE_CUBE_MAP_POSITIVE_Z:
case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z:
case GL_PROXY_TEXTURE_CUBE_MAP:
maxSize = 1 << (ctx->Const.MaxCubeTextureLevels - 1);
maxSize >>= level;
if (width != height)
return GL_FALSE;
if (width < 2 * border || width > 2 * border + maxSize)
return GL_FALSE;
if (height < 2 * border || height > 2 * border + maxSize)
return GL_FALSE;
if (!ctx->Extensions.ARB_texture_non_power_of_two) {
if (width > 0 && !_mesa_is_pow_two(width - 2 * border))
return GL_FALSE;
if (height > 0 && !_mesa_is_pow_two(height - 2 * border))
return GL_FALSE;
}
return GL_TRUE;
case GL_TEXTURE_1D_ARRAY_EXT:
case GL_PROXY_TEXTURE_1D_ARRAY_EXT:
maxSize = 1 << (ctx->Const.MaxTextureLevels - 1);
maxSize >>= level;
if (width < 2 * border || width > 2 * border + maxSize)
return GL_FALSE;
if (height < 0 || height > ctx->Const.MaxArrayTextureLayers)
return GL_FALSE;
if (!ctx->Extensions.ARB_texture_non_power_of_two) {
if (width > 0 && !_mesa_is_pow_two(width - 2 * border))
return GL_FALSE;
}
return GL_TRUE;
case GL_TEXTURE_2D_ARRAY_EXT:
case GL_PROXY_TEXTURE_2D_ARRAY_EXT:
case GL_TEXTURE_2D_MULTISAMPLE_ARRAY:
case GL_PROXY_TEXTURE_2D_MULTISAMPLE_ARRAY:
maxSize = 1 << (ctx->Const.MaxTextureLevels - 1);
maxSize >>= level;
if (width < 2 * border || width > 2 * border + maxSize)
return GL_FALSE;
if (height < 2 * border || height > 2 * border + maxSize)
return GL_FALSE;
if (depth < 0 || depth > ctx->Const.MaxArrayTextureLayers)
return GL_FALSE;
if (!ctx->Extensions.ARB_texture_non_power_of_two) {
if (width > 0 && !_mesa_is_pow_two(width - 2 * border))
return GL_FALSE;
if (height > 0 && !_mesa_is_pow_two(height - 2 * border))
return GL_FALSE;
}
return GL_TRUE;
case GL_TEXTURE_CUBE_MAP_ARRAY:
case GL_PROXY_TEXTURE_CUBE_MAP_ARRAY:
maxSize = 1 << (ctx->Const.MaxCubeTextureLevels - 1);
if (width < 2 * border || width > 2 * border + maxSize)
return GL_FALSE;
if (height < 2 * border || height > 2 * border + maxSize)
return GL_FALSE;
if (depth < 0 || depth > ctx->Const.MaxArrayTextureLayers || depth % 6)
return GL_FALSE;
if (width != height)
return GL_FALSE;
if (level >= ctx->Const.MaxCubeTextureLevels)
return GL_FALSE;
if (!ctx->Extensions.ARB_texture_non_power_of_two) {
if (width > 0 && !_mesa_is_pow_two(width - 2 * border))
return GL_FALSE;
if (height > 0 && !_mesa_is_pow_two(height - 2 * border))
return GL_FALSE;
}
return GL_TRUE;
default:
_mesa_problem(ctx, "Invalid target in _mesa_legal_texture_dimensions()");
return GL_FALSE;
}
}
static bool
error_check_subtexture_negative_dimensions(struct gl_context *ctx,
GLuint dims,
GLsizei subWidth,
GLsizei subHeight,
GLsizei subDepth,
const char *func)
{
/* Check size */
if (subWidth < 0) {
_mesa_error(ctx, GL_INVALID_VALUE, "%s(width=%d)", func, subWidth);
return true;
}
if (dims > 1 && subHeight < 0) {
_mesa_error(ctx, GL_INVALID_VALUE, "%s(height=%d)", func, subHeight);
return true;
}
if (dims > 2 && subDepth < 0) {
_mesa_error(ctx, GL_INVALID_VALUE, "%s(depth=%d)", func, subDepth);
return true;
}
return false;
}
/**
* Do error checking of xoffset, yoffset, zoffset, width, height and depth
* for glTexSubImage, glCopyTexSubImage and glCompressedTexSubImage.
* \param destImage the destination texture image.
* \return GL_TRUE if error found, GL_FALSE otherwise.
*/
static GLboolean
error_check_subtexture_dimensions(struct gl_context *ctx, GLuint dims,
const struct gl_texture_image *destImage,
GLint xoffset, GLint yoffset, GLint zoffset,
GLsizei subWidth, GLsizei subHeight,
GLsizei subDepth, const char *func)
{
const GLenum target = destImage->TexObject->Target;
GLuint bw, bh, bd;
/* check xoffset and width */
if (xoffset < - (GLint) destImage->Border) {
_mesa_error(ctx, GL_INVALID_VALUE, "%s(xoffset)", func);
return GL_TRUE;
}
if (xoffset + subWidth > (GLint) destImage->Width) {
_mesa_error(ctx, GL_INVALID_VALUE, "%s(xoffset+width)", func);
return GL_TRUE;
}
/* check yoffset and height */
if (dims > 1) {
GLint yBorder = (target == GL_TEXTURE_1D_ARRAY) ? 0 : destImage->Border;
if (yoffset < -yBorder) {
_mesa_error(ctx, GL_INVALID_VALUE, "%s(yoffset)", func);
return GL_TRUE;
}
if (yoffset + subHeight > (GLint) destImage->Height) {
_mesa_error(ctx, GL_INVALID_VALUE, "%s(yoffset+height)", func);
return GL_TRUE;
}
}
/* check zoffset and depth */
if (dims > 2) {
GLint depth;
GLint zBorder = (target == GL_TEXTURE_2D_ARRAY ||
target == GL_TEXTURE_CUBE_MAP_ARRAY) ?
0 : destImage->Border;
if (zoffset < -zBorder) {
_mesa_error(ctx, GL_INVALID_VALUE, "%s(zoffset)", func);
return GL_TRUE;
}
depth = (GLint) destImage->Depth;
if (target == GL_TEXTURE_CUBE_MAP)
depth = 6;
if (zoffset + subDepth > depth) {
_mesa_error(ctx, GL_INVALID_VALUE, "%s(zoffset+depth)", func);
return GL_TRUE;
}
}
/*
* The OpenGL spec (and GL_ARB_texture_compression) says only whole
* compressed texture images can be updated. But, that restriction may be
* relaxed for particular compressed formats. At this time, all the
* compressed formats supported by Mesa allow sub-textures to be updated
* along compressed block boundaries.
*/
_mesa_get_format_block_size_3d(destImage->TexFormat, &bw, &bh, &bd);
if (bw != 1 || bh != 1 || bd != 1) {
/* offset must be multiple of block size */
if ((xoffset % bw != 0) || (yoffset % bh != 0) || (zoffset % bd != 0)) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"%s(xoffset = %d, yoffset = %d, zoffset = %d)",
func, xoffset, yoffset, zoffset);
return GL_TRUE;
}
/* The size must be a multiple of bw x bh, or we must be using a
* offset+size that exactly hits the edge of the image. This
* is important for small mipmap levels (1x1, 2x1, etc) and for
* NPOT textures.
*/
if ((subWidth % bw != 0) &&
(xoffset + subWidth != (GLint) destImage->Width)) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"%s(width = %d)", func, subWidth);
return GL_TRUE;
}
if ((subHeight % bh != 0) &&
(yoffset + subHeight != (GLint) destImage->Height)) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"%s(height = %d)", func, subHeight);
return GL_TRUE;
}
if ((subDepth % bd != 0) &&
(zoffset + subDepth != (GLint) destImage->Depth)) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"%s(depth = %d)", func, subDepth);
return GL_TRUE;
}
}
return GL_FALSE;
}
/**
* This is the fallback for Driver.TestProxyTexImage() for doing device-
* specific texture image size checks.
*
* A hardware driver might override this function if, for example, the
* max 3D texture size is 512x512x64 (i.e. not a cube).
*
* Note that width, height, depth == 0 is not an error. However, a
* texture with zero width/height/depth will be considered "incomplete"
* and texturing will effectively be disabled.
*
* \param target any texture target/type
* \param numLevels number of mipmap levels in the texture or 0 if not known
* \param level as passed to glTexImage
* \param format the MESA_FORMAT_x for the tex image
* \param numSamples number of samples per texel
* \param width as passed to glTexImage
* \param height as passed to glTexImage
* \param depth as passed to glTexImage
* \return GL_TRUE if the image is acceptable, GL_FALSE if not acceptable.
*/
GLboolean
_mesa_test_proxy_teximage(struct gl_context *ctx, GLenum target,
GLuint numLevels, GLint level,
mesa_format format, GLuint numSamples,
GLint width, GLint height, GLint depth)
{
uint64_t bytes, mbytes;
if (numLevels > 0) {
/* Compute total memory for a whole mipmap. This is the path
* taken for glTexStorage(GL_PROXY_TEXTURE_x).
*/
unsigned l;
assert(level == 0);
bytes = 0;
for (l = 0; l < numLevels; l++) {
GLint nextWidth, nextHeight, nextDepth;
bytes += _mesa_format_image_size64(format, width, height, depth);
if (_mesa_next_mipmap_level_size(target, 0, width, height, depth,
&nextWidth, &nextHeight,
&nextDepth)) {
width = nextWidth;
height = nextHeight;
depth = nextDepth;
} else {
break;
}
}
} else {
/* We just compute the size of one mipmap level. This is the path
* taken for glTexImage(GL_PROXY_TEXTURE_x).
*/
bytes = _mesa_format_image_size64(format, width, height, depth);
}
bytes *= _mesa_num_tex_faces(target);
bytes *= MAX2(1, numSamples);
mbytes = bytes / (1024 * 1024); /* convert to MB */
/* We just check if the image size is less than MaxTextureMbytes.
* Some drivers may do more specific checks.
*/
return mbytes <= (uint64_t) ctx->Const.MaxTextureMbytes;
}
/**
* Return true if the format is only valid for glCompressedTexImage.
*/
static bool
compressedteximage_only_format(const struct gl_context *ctx, GLenum format)
{
switch (format) {
case GL_ETC1_RGB8_OES:
case GL_PALETTE4_RGB8_OES:
case GL_PALETTE4_RGBA8_OES:
case GL_PALETTE4_R5_G6_B5_OES:
case GL_PALETTE4_RGBA4_OES:
case GL_PALETTE4_RGB5_A1_OES:
case GL_PALETTE8_RGB8_OES:
case GL_PALETTE8_RGBA8_OES:
case GL_PALETTE8_R5_G6_B5_OES:
case GL_PALETTE8_RGBA4_OES:
case GL_PALETTE8_RGB5_A1_OES:
return true;
default:
return false;
}
}
/**
* Return true if the format doesn't support online compression.
*/
bool
_mesa_format_no_online_compression(const struct gl_context *ctx, GLenum format)
{
return _mesa_is_astc_format(format) ||
_mesa_is_etc2_format(format) ||
compressedteximage_only_format(ctx, format);
}
/* Writes to an GL error pointer if non-null and returns whether or not the
* error is GL_NO_ERROR */
static bool
write_error(GLenum *err_ptr, GLenum error)
{
if (err_ptr)
*err_ptr = error;
return error == GL_NO_ERROR;
}
/**
* Helper function to determine whether a target and specific compression
* format are supported. The error parameter returns GL_NO_ERROR if the
* target can be compressed. Otherwise it returns either GL_INVALID_OPERATION
* or GL_INVALID_ENUM, whichever is more appropriate.
*/
GLboolean
_mesa_target_can_be_compressed(const struct gl_context *ctx, GLenum target,
GLenum intFormat, GLenum *error)
{
GLboolean target_can_be_compresed = GL_FALSE;
mesa_format format = _mesa_glenum_to_compressed_format(intFormat);
enum mesa_format_layout layout = _mesa_get_format_layout(format);
switch (target) {
case GL_TEXTURE_2D:
case GL_PROXY_TEXTURE_2D:
target_can_be_compresed = GL_TRUE; /* true for any compressed format so far */
break;
case GL_PROXY_TEXTURE_CUBE_MAP:
case GL_TEXTURE_CUBE_MAP:
case GL_TEXTURE_CUBE_MAP_POSITIVE_X:
case GL_TEXTURE_CUBE_MAP_NEGATIVE_X:
case GL_TEXTURE_CUBE_MAP_POSITIVE_Y:
case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y:
case GL_TEXTURE_CUBE_MAP_POSITIVE_Z:
case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z:
target_can_be_compresed = ctx->Extensions.ARB_texture_cube_map;
break;
case GL_PROXY_TEXTURE_2D_ARRAY_EXT:
case GL_TEXTURE_2D_ARRAY_EXT:
target_can_be_compresed = ctx->Extensions.EXT_texture_array;
break;
case GL_PROXY_TEXTURE_CUBE_MAP_ARRAY:
case GL_TEXTURE_CUBE_MAP_ARRAY:
/* From the KHR_texture_compression_astc_hdr spec:
*
* Add a second new column "3D Tex." which is empty for all non-ASTC
* formats. If only the LDR profile is supported by the
* implementation, this column is also empty for all ASTC formats. If
* both the LDR and HDR profiles are supported only, this column is
* checked for all ASTC formats.
*
* Add a third new column "Cube Map Array Tex." which is empty for all
* non-ASTC formats, and checked for all ASTC formats.
*
* and,
*
* 'An INVALID_OPERATION error is generated by CompressedTexImage3D
* if <internalformat> is TEXTURE_CUBE_MAP_ARRAY and the
* "Cube Map Array" column of table 8.19 is *not* checked, or if
* <internalformat> is TEXTURE_3D and the "3D Tex." column of table
* 8.19 is *not* checked'
*
* The instances of <internalformat> above should say <target>.
*
* ETC2/EAC formats are the only alternative in GLES and thus such errors
* have already been handled by normal ETC2/EAC behavior.
*/
/* From section 3.8.6, page 146 of OpenGL ES 3.0 spec:
*
* "The ETC2/EAC texture compression algorithm supports only
* two-dimensional images. If internalformat is an ETC2/EAC format,
* glCompressedTexImage3D will generate an INVALID_OPERATION error if
* target is not TEXTURE_2D_ARRAY."
*
* This should also be applicable for glTexStorage3D(). Other available
* targets for these functions are: TEXTURE_3D and TEXTURE_CUBE_MAP_ARRAY.
*/
if (layout == MESA_FORMAT_LAYOUT_ETC2 && _mesa_is_gles3(ctx))
return write_error(error, GL_INVALID_OPERATION);
target_can_be_compresed = _mesa_has_texture_cube_map_array(ctx);
break;
case GL_TEXTURE_3D:
switch (layout) {
case MESA_FORMAT_LAYOUT_ETC2:
/* See ETC2/EAC comment in case GL_TEXTURE_CUBE_MAP_ARRAY. */
if (_mesa_is_gles3(ctx))
return write_error(error, GL_INVALID_OPERATION);
break;
case MESA_FORMAT_LAYOUT_BPTC:
target_can_be_compresed = ctx->Extensions.ARB_texture_compression_bptc;
break;
case MESA_FORMAT_LAYOUT_ASTC:
target_can_be_compresed =
ctx->Extensions.KHR_texture_compression_astc_hdr ||
ctx->Extensions.KHR_texture_compression_astc_sliced_3d;
/* Throw an INVALID_OPERATION error if the target is TEXTURE_3D and
* neither of the above extensions are supported. See comment in
* switch case GL_TEXTURE_CUBE_MAP_ARRAY for more info.
*/
if (!target_can_be_compresed)
return write_error(error, GL_INVALID_OPERATION);
break;
default:
break;
}
default:
break;
}
return write_error(error,
target_can_be_compresed ? GL_NO_ERROR : GL_INVALID_ENUM);
}
/**
* Check if the given texture target value is legal for a
* glTexImage1/2/3D call.
*/
static GLboolean
legal_teximage_target(struct gl_context *ctx, GLuint dims, GLenum target)
{
switch (dims) {
case 1:
switch (target) {
case GL_TEXTURE_1D:
case GL_PROXY_TEXTURE_1D:
return _mesa_is_desktop_gl(ctx);
default:
return GL_FALSE;
}
case 2:
switch (target) {
case GL_TEXTURE_2D:
return GL_TRUE;
case GL_PROXY_TEXTURE_2D:
return _mesa_is_desktop_gl(ctx);
case GL_PROXY_TEXTURE_CUBE_MAP:
return _mesa_is_desktop_gl(ctx)
&& ctx->Extensions.ARB_texture_cube_map;
case GL_TEXTURE_CUBE_MAP_POSITIVE_X:
case GL_TEXTURE_CUBE_MAP_NEGATIVE_X:
case GL_TEXTURE_CUBE_MAP_POSITIVE_Y:
case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y:
case GL_TEXTURE_CUBE_MAP_POSITIVE_Z:
case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z:
return ctx->Extensions.ARB_texture_cube_map;
case GL_TEXTURE_RECTANGLE_NV:
case GL_PROXY_TEXTURE_RECTANGLE_NV:
return _mesa_is_desktop_gl(ctx)
&& ctx->Extensions.NV_texture_rectangle;
case GL_TEXTURE_1D_ARRAY_EXT:
case GL_PROXY_TEXTURE_1D_ARRAY_EXT:
return _mesa_is_desktop_gl(ctx) && ctx->Extensions.EXT_texture_array;
default:
return GL_FALSE;
}
case 3:
switch (target) {
case GL_TEXTURE_3D:
return GL_TRUE;
case GL_PROXY_TEXTURE_3D:
return _mesa_is_desktop_gl(ctx);
case GL_TEXTURE_2D_ARRAY_EXT:
return (_mesa_is_desktop_gl(ctx) && ctx->Extensions.EXT_texture_array)
|| _mesa_is_gles3(ctx);
case GL_PROXY_TEXTURE_2D_ARRAY_EXT:
return _mesa_is_desktop_gl(ctx) && ctx->Extensions.EXT_texture_array;
case GL_TEXTURE_CUBE_MAP_ARRAY:
case GL_PROXY_TEXTURE_CUBE_MAP_ARRAY:
return _mesa_has_texture_cube_map_array(ctx);
default:
return GL_FALSE;
}
default:
_mesa_problem(ctx, "invalid dims=%u in legal_teximage_target()", dims);
return GL_FALSE;
}
}
/**
* Check if the given texture target value is legal for a
* glTexSubImage, glCopyTexSubImage or glCopyTexImage call.
* The difference compared to legal_teximage_target() above is that
* proxy targets are not supported.
*/
static GLboolean
legal_texsubimage_target(struct gl_context *ctx, GLuint dims, GLenum target,
bool dsa)
{
switch (dims) {
case 1:
return _mesa_is_desktop_gl(ctx) && target == GL_TEXTURE_1D;
case 2:
switch (target) {
case GL_TEXTURE_2D:
return GL_TRUE;
case GL_TEXTURE_CUBE_MAP_POSITIVE_X:
case GL_TEXTURE_CUBE_MAP_NEGATIVE_X:
case GL_TEXTURE_CUBE_MAP_POSITIVE_Y:
case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y:
case GL_TEXTURE_CUBE_MAP_POSITIVE_Z:
case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z:
return ctx->Extensions.ARB_texture_cube_map;
case GL_TEXTURE_RECTANGLE_NV:
return _mesa_is_desktop_gl(ctx)
&& ctx->Extensions.NV_texture_rectangle;
case GL_TEXTURE_1D_ARRAY_EXT:
return _mesa_is_desktop_gl(ctx) && ctx->Extensions.EXT_texture_array;
default:
return GL_FALSE;
}
case 3:
switch (target) {
case GL_TEXTURE_3D:
return GL_TRUE;
case GL_TEXTURE_2D_ARRAY_EXT:
return (_mesa_is_desktop_gl(ctx) && ctx->Extensions.EXT_texture_array)
|| _mesa_is_gles3(ctx);
case GL_TEXTURE_CUBE_MAP_ARRAY:
case GL_PROXY_TEXTURE_CUBE_MAP_ARRAY:
return _mesa_has_texture_cube_map_array(ctx);
/* Table 8.15 of the OpenGL 4.5 core profile spec
* (20141030) says that TEXTURE_CUBE_MAP is valid for TextureSubImage3D
* and CopyTextureSubImage3D.
*/
case GL_TEXTURE_CUBE_MAP:
return dsa;
default:
return GL_FALSE;
}
default:
_mesa_problem(ctx, "invalid dims=%u in legal_texsubimage_target()",
dims);
return GL_FALSE;
}
}
/**
* Helper function to determine if a texture object is mutable (in terms
* of GL_ARB_texture_storage).
*/
static GLboolean
mutable_tex_object(struct gl_context *ctx, GLenum target)
{
struct gl_texture_object *texObj = _mesa_get_current_tex_object(ctx, target);
if (!texObj)
return GL_FALSE;
return !texObj->Immutable;
}
/**
* Return expected size of a compressed texture.
*/
static GLuint
compressed_tex_size(GLsizei width, GLsizei height, GLsizei depth,
GLenum glformat)
{
mesa_format mesaFormat = _mesa_glenum_to_compressed_format(glformat);
return _mesa_format_image_size(mesaFormat, width, height, depth);
}
/**
* Verify that a texture format is valid with a particular target
*
* In particular, textures with base format of \c GL_DEPTH_COMPONENT or
* \c GL_DEPTH_STENCIL are only valid with certain, context dependent texture
* targets.
*
* \param ctx GL context
* \param target Texture target
* \param internalFormat Internal format of the texture image
*
* \returns true if the combination is legal, false otherwise.
*/
bool
_mesa_legal_texture_base_format_for_target(struct gl_context *ctx,
GLenum target, GLenum internalFormat)
{
if (_mesa_base_tex_format(ctx, internalFormat) == GL_DEPTH_COMPONENT
|| _mesa_base_tex_format(ctx, internalFormat) == GL_DEPTH_STENCIL
|| _mesa_base_tex_format(ctx, internalFormat) == GL_STENCIL_INDEX) {
/* Section 3.8.3 (Texture Image Specification) of the OpenGL 3.3 Core
* Profile spec says:
*
* "Textures with a base internal format of DEPTH_COMPONENT or
* DEPTH_STENCIL are supported by texture image specification
* commands only if target is TEXTURE_1D, TEXTURE_2D,
* TEXTURE_1D_ARRAY, TEXTURE_2D_ARRAY, TEXTURE_RECTANGLE,
* TEXTURE_CUBE_MAP, PROXY_TEXTURE_1D, PROXY_TEXTURE_2D,
* PROXY_TEXTURE_1D_ARRAY, PROXY_TEXTURE_2D_ARRAY,
* PROXY_TEXTURE_RECTANGLE, or PROXY_TEXTURE_CUBE_MAP. Using these
* formats in conjunction with any other target will result in an
* INVALID_OPERATION error."
*
* Cubemaps are only supported with desktop OpenGL version >= 3.0,
* EXT_gpu_shader4, or, on OpenGL ES 2.0+, OES_depth_texture_cube_map.
*/
if (target != GL_TEXTURE_1D &&
target != GL_PROXY_TEXTURE_1D &&
target != GL_TEXTURE_2D &&
target != GL_PROXY_TEXTURE_2D &&
target != GL_TEXTURE_1D_ARRAY &&
target != GL_PROXY_TEXTURE_1D_ARRAY &&
target != GL_TEXTURE_2D_ARRAY &&
target != GL_PROXY_TEXTURE_2D_ARRAY &&
target != GL_TEXTURE_RECTANGLE_ARB &&
target != GL_PROXY_TEXTURE_RECTANGLE_ARB &&
!((_mesa_is_cube_face(target) ||
target == GL_TEXTURE_CUBE_MAP ||
target == GL_PROXY_TEXTURE_CUBE_MAP) &&
(ctx->Version >= 30 || ctx->Extensions.EXT_gpu_shader4
|| (ctx->API == API_OPENGLES2 && ctx->Extensions.OES_depth_texture_cube_map))) &&
!((target == GL_TEXTURE_CUBE_MAP_ARRAY ||
target == GL_PROXY_TEXTURE_CUBE_MAP_ARRAY) &&
_mesa_has_texture_cube_map_array(ctx))) {
return false;
}
}
return true;
}
static bool
texture_formats_agree(GLenum internalFormat,
GLenum format)
{
GLboolean colorFormat;
GLboolean is_format_depth_or_depthstencil;
GLboolean is_internalFormat_depth_or_depthstencil;
/* Even though there are no color-index textures, we still have to support
* uploading color-index data and remapping it to RGB via the
* GL_PIXEL_MAP_I_TO_[RGBA] tables.
*/
const GLboolean indexFormat = (format == GL_COLOR_INDEX);
is_internalFormat_depth_or_depthstencil =
_mesa_is_depth_format(internalFormat) ||
_mesa_is_depthstencil_format(internalFormat);
is_format_depth_or_depthstencil =
_mesa_is_depth_format(format) ||
_mesa_is_depthstencil_format(format);
colorFormat = _mesa_is_color_format(format);
if (_mesa_is_color_format(internalFormat) && !colorFormat && !indexFormat)
return false;
if (is_internalFormat_depth_or_depthstencil !=
is_format_depth_or_depthstencil)
return false;
if (_mesa_is_ycbcr_format(internalFormat) != _mesa_is_ycbcr_format(format))
return false;
return true;
}
/**
* Test the combination of format, type and internal format arguments of
* different texture operations on GLES.
*
* \param ctx GL context.
* \param format pixel data format given by the user.
* \param type pixel data type given by the user.
* \param internalFormat internal format given by the user.
* \param dimensions texture image dimensions (must be 1, 2 or 3).
* \param callerName name of the caller function to print in the error message
*
* \return true if a error is found, false otherwise
*
* Currently, it is used by texture_error_check() and texsubimage_error_check().
*/
static bool
texture_format_error_check_gles(struct gl_context *ctx, GLenum format,
GLenum type, GLenum internalFormat,
GLuint dimensions, const char *callerName)
{
GLenum err;
if (_mesa_is_gles3(ctx)) {
err = _mesa_es3_error_check_format_and_type(ctx, format, type,
internalFormat);
if (err != GL_NO_ERROR) {
_mesa_error(ctx, err,
"%s(format = %s, type = %s, internalformat = %s)",
callerName, _mesa_enum_to_string(format),
_mesa_enum_to_string(type),
_mesa_enum_to_string(internalFormat));
return true;
}
}
else {
err = _mesa_es_error_check_format_and_type(ctx, format, type, dimensions);
if (err != GL_NO_ERROR) {
_mesa_error(ctx, err, "%s(format = %s, type = %s)",
callerName, _mesa_enum_to_string(format),
_mesa_enum_to_string(type));
return true;
}
}
return false;
}
/**
* Test the glTexImage[123]D() parameters for errors.
*
* \param ctx GL context.
* \param dimensions texture image dimensions (must be 1, 2 or 3).
* \param target texture target given by the user (already validated).
* \param level image level given by the user.
* \param internalFormat internal format given by the user.
* \param format pixel data format given by the user.
* \param type pixel data type given by the user.
* \param width image width given by the user.
* \param height image height given by the user.
* \param depth image depth given by the user.
* \param border image border given by the user.
*
* \return GL_TRUE if a error is found, GL_FALSE otherwise
*
* Verifies each of the parameters against the constants specified in
* __struct gl_contextRec::Const and the supported extensions, and according
* to the OpenGL specification.
* Note that we don't fully error-check the width, height, depth values
* here. That's done in _mesa_legal_texture_dimensions() which is used
* by several other GL entrypoints. Plus, texture dims have a special
* interaction with proxy textures.
*/
static GLboolean
texture_error_check( struct gl_context *ctx,
GLuint dimensions, GLenum target,
GLint level, GLint internalFormat,
GLenum format, GLenum type,
GLint width, GLint height,
GLint depth, GLint border,
const GLvoid *pixels )
{
GLenum err;
/* Note: for proxy textures, some error conditions immediately generate
* a GL error in the usual way. But others do not generate a GL error.
* Instead, they cause the width, height, depth, format fields of the
* texture image to be zeroed-out. The GL spec seems to indicate that the
* zero-out behaviour is only used in cases related to memory allocation.
*/
/* level check */
if (level < 0 || level >= _mesa_max_texture_levels(ctx, target)) {
_mesa_error(ctx, GL_INVALID_VALUE,
"glTexImage%dD(level=%d)", dimensions, level);
return GL_TRUE;
}
/* Check border */
if (border < 0 || border > 1 ||
((ctx->API != API_OPENGL_COMPAT ||
target == GL_TEXTURE_RECTANGLE_NV ||
target == GL_PROXY_TEXTURE_RECTANGLE_NV) && border != 0)) {
_mesa_error(ctx, GL_INVALID_VALUE,
"glTexImage%dD(border=%d)", dimensions, border);
return GL_TRUE;
}
if (width < 0 || height < 0 || depth < 0) {
_mesa_error(ctx, GL_INVALID_VALUE,
"glTexImage%dD(width, height or depth < 0)", dimensions);
return GL_TRUE;
}
/* Check incoming image format and type */
err = _mesa_error_check_format_and_type(ctx, format, type);
if (err != GL_NO_ERROR) {
/* Prior to OpenGL-ES 2.0, an INVALID_VALUE is expected instead of
* INVALID_ENUM. From page 73 OpenGL ES 1.1 spec:
*
* "Specifying a value for internalformat that is not one of the
* above (acceptable) values generates the error INVALID VALUE."
*/
if (err == GL_INVALID_ENUM && _mesa_is_gles(ctx) && ctx->Version < 20)
err = GL_INVALID_VALUE;
_mesa_error(ctx, err,
"glTexImage%dD(incompatible format = %s, type = %s)",
dimensions, _mesa_enum_to_string(format),
_mesa_enum_to_string(type));
return GL_TRUE;
}
/* Check internalFormat */
if (_mesa_base_tex_format(ctx, internalFormat) < 0) {
_mesa_error(ctx, GL_INVALID_VALUE,
"glTexImage%dD(internalFormat=%s)",
dimensions, _mesa_enum_to_string(internalFormat));
return GL_TRUE;
}
/* OpenGL ES 1.x and OpenGL ES 2.0 impose additional restrictions on the
* combinations of format, internalFormat, and type that can be used.
* Formats and types that require additional extensions (e.g., GL_FLOAT
* requires GL_OES_texture_float) are filtered elsewhere.
*/
if (_mesa_is_gles(ctx) &&
texture_format_error_check_gles(ctx, format, type, internalFormat,
dimensions, "glTexImage%dD")) {
return GL_TRUE;
}
/* validate the bound PBO, if any */
if (!_mesa_validate_pbo_source(ctx, dimensions, &ctx->Unpack,
width, height, depth, format, type,
INT_MAX, pixels, "glTexImage")) {
return GL_TRUE;
}
/* make sure internal format and format basically agree */
if (!texture_formats_agree(internalFormat, format)) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glTexImage%dD(incompatible internalFormat = %s, format = %s)",
dimensions, _mesa_enum_to_string(internalFormat),
_mesa_enum_to_string(format));
return GL_TRUE;
}
/* additional checks for ycbcr textures */
if (internalFormat == GL_YCBCR_MESA) {
assert(ctx->Extensions.MESA_ycbcr_texture);
if (type != GL_UNSIGNED_SHORT_8_8_MESA &&
type != GL_UNSIGNED_SHORT_8_8_REV_MESA) {
char message[100];
_mesa_snprintf(message, sizeof(message),
"glTexImage%dD(format/type YCBCR mismatch)",
dimensions);
_mesa_error(ctx, GL_INVALID_ENUM, "%s", message);
return GL_TRUE; /* error */
}
if (target != GL_TEXTURE_2D &&
target != GL_PROXY_TEXTURE_2D &&
target != GL_TEXTURE_RECTANGLE_NV &&
target != GL_PROXY_TEXTURE_RECTANGLE_NV) {
_mesa_error(ctx, GL_INVALID_ENUM,
"glTexImage%dD(bad target for YCbCr texture)",
dimensions);
return GL_TRUE;
}
if (border != 0) {
char message[100];
_mesa_snprintf(message, sizeof(message),
"glTexImage%dD(format=GL_YCBCR_MESA and border=%d)",
dimensions, border);
_mesa_error(ctx, GL_INVALID_VALUE, "%s", message);
return GL_TRUE;
}
}
/* additional checks for depth textures */
if (!_mesa_legal_texture_base_format_for_target(ctx, target, internalFormat)) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glTexImage%dD(bad target for texture)", dimensions);
return GL_TRUE;
}
/* additional checks for compressed textures */
if (_mesa_is_compressed_format(ctx, internalFormat)) {
GLenum err;
if (!_mesa_target_can_be_compressed(ctx, target, internalFormat, &err)) {
_mesa_error(ctx, err,
"glTexImage%dD(target can't be compressed)", dimensions);
return GL_TRUE;
}
if (_mesa_format_no_online_compression(ctx, internalFormat)) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glTexImage%dD(no compression for format)", dimensions);
return GL_TRUE;
}
if (border != 0) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glTexImage%dD(border!=0)", dimensions);
return GL_TRUE;
}
}
/* additional checks for integer textures */
if ((ctx->Version >= 30 || ctx->Extensions.EXT_texture_integer) &&
(_mesa_is_enum_format_integer(format) !=
_mesa_is_enum_format_integer(internalFormat))) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glTexImage%dD(integer/non-integer format mismatch)",
dimensions);
return GL_TRUE;
}
if (!mutable_tex_object(ctx, target)) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glTexImage%dD(immutable texture)", dimensions);
return GL_TRUE;
}
/* if we get here, the parameters are OK */
return GL_FALSE;
}
/**
* Error checking for glCompressedTexImage[123]D().
* Note that the width, height and depth values are not fully error checked
* here.
* \return GL_TRUE if a error is found, GL_FALSE otherwise
*/
static GLenum
compressed_texture_error_check(struct gl_context *ctx, GLint dimensions,
GLenum target, GLint level,
GLenum internalFormat, GLsizei width,
GLsizei height, GLsizei depth, GLint border,
GLsizei imageSize, const GLvoid *data)
{
const GLint maxLevels = _mesa_max_texture_levels(ctx, target);
GLint expectedSize;
GLenum error = GL_NO_ERROR;
char *reason = ""; /* no error */
if (!_mesa_target_can_be_compressed(ctx, target, internalFormat, &error)) {
reason = "target";
goto error;
}
/* This will detect any invalid internalFormat value */
if (!_mesa_is_compressed_format(ctx, internalFormat)) {
_mesa_error(ctx, GL_INVALID_ENUM,
"glCompressedTexImage%dD(internalFormat=%s)",
dimensions, _mesa_enum_to_string(internalFormat));
return GL_TRUE;
}
/* validate the bound PBO, if any */
if (!_mesa_validate_pbo_source_compressed(ctx, dimensions, &ctx->Unpack,
imageSize, data,
"glCompressedTexImage")) {
return GL_TRUE;
}
switch (internalFormat) {
case GL_PALETTE4_RGB8_OES:
case GL_PALETTE4_RGBA8_OES:
case GL_PALETTE4_R5_G6_B5_OES:
case GL_PALETTE4_RGBA4_OES:
case GL_PALETTE4_RGB5_A1_OES:
case GL_PALETTE8_RGB8_OES:
case GL_PALETTE8_RGBA8_OES:
case GL_PALETTE8_R5_G6_B5_OES:
case GL_PALETTE8_RGBA4_OES:
case GL_PALETTE8_RGB5_A1_OES:
/* check level (note that level should be zero or less!) */
if (level > 0 || level < -maxLevels) {
reason = "level";
error = GL_INVALID_VALUE;
goto error;
}
if (dimensions != 2) {
reason = "compressed paletted textures must be 2D";
error = GL_INVALID_OPERATION;
goto error;
}
/* Figure out the expected texture size (in bytes). This will be
* checked against the actual size later.
*/
expectedSize = _mesa_cpal_compressed_size(level, internalFormat,
width, height);
/* This is for the benefit of the TestProxyTexImage below. It expects
* level to be non-negative. OES_compressed_paletted_texture uses a
* weird mechanism where the level specified to glCompressedTexImage2D
* is -(n-1) number of levels in the texture, and the data specifies the
* complete mipmap stack. This is done to ensure the palette is the
* same for all levels.
*/
level = -level;
break;
default:
/* check level */
if (level < 0 || level >= maxLevels) {
reason = "level";
error = GL_INVALID_VALUE;
goto error;
}
/* Figure out the expected texture size (in bytes). This will be
* checked against the actual size later.
*/
expectedSize = compressed_tex_size(width, height, depth, internalFormat);
break;
}
/* This should really never fail */
if (_mesa_base_tex_format(ctx, internalFormat) < 0) {
reason = "internalFormat";
error = GL_INVALID_ENUM;
goto error;
}
/* No compressed formats support borders at this time */
if (border != 0) {
reason = "border != 0";
error = GL_INVALID_VALUE;
goto error;
}
/* Check for invalid pixel storage modes */
if (!_mesa_compressed_pixel_storage_error_check(ctx, dimensions,
&ctx->Unpack,
"glCompressedTexImage")) {
return GL_FALSE;
}
/* check image size in bytes */
if (expectedSize != imageSize) {
/* Per GL_ARB_texture_compression: GL_INVALID_VALUE is generated [...]
* if <imageSize> is not consistent with the format, dimensions, and
* contents of the specified image.
*/
reason = "imageSize inconsistent with width/height/format";
error = GL_INVALID_VALUE;
goto error;
}
if (!mutable_tex_object(ctx, target)) {
reason = "immutable texture";
error = GL_INVALID_OPERATION;
goto error;
}
return GL_FALSE;
error:
/* Note: not all error paths exit through here. */
_mesa_error(ctx, error, "glCompressedTexImage%dD(%s)",
dimensions, reason);
return GL_TRUE;
}
/**
* Test glTexSubImage[123]D() parameters for errors.
*
* \param ctx GL context.
* \param dimensions texture image dimensions (must be 1, 2 or 3).
* \param target texture target given by the user (already validated)
* \param level image level given by the user.
* \param xoffset sub-image x offset given by the user.
* \param yoffset sub-image y offset given by the user.
* \param zoffset sub-image z offset given by the user.
* \param format pixel data format given by the user.
* \param type pixel data type given by the user.
* \param width image width given by the user.
* \param height image height given by the user.
* \param depth image depth given by the user.
*
* \return GL_TRUE if an error was detected, or GL_FALSE if no errors.
*
* Verifies each of the parameters against the constants specified in
* __struct gl_contextRec::Const and the supported extensions, and according
* to the OpenGL specification.
*/
static GLboolean
texsubimage_error_check(struct gl_context *ctx, GLuint dimensions,
struct gl_texture_object *texObj,
GLenum target, GLint level,
GLint xoffset, GLint yoffset, GLint zoffset,
GLint width, GLint height, GLint depth,
GLenum format, GLenum type, const GLvoid *pixels,
bool dsa, const char *callerName)
{
struct gl_texture_image *texImage;
GLenum err;
if (!texObj) {
/* must be out of memory */
_mesa_error(ctx, GL_OUT_OF_MEMORY, "%s()", callerName);
return GL_TRUE;
}
/* level check */
if (level < 0 || level >= _mesa_max_texture_levels(ctx, target)) {
_mesa_error(ctx, GL_INVALID_VALUE, "%s(level=%d)", callerName, level);
return GL_TRUE;
}
if (error_check_subtexture_negative_dimensions(ctx, dimensions,
width, height, depth,
callerName)) {
return GL_TRUE;
}
texImage = _mesa_select_tex_image(texObj, target, level);
if (!texImage) {
/* non-existant texture level */
_mesa_error(ctx, GL_INVALID_OPERATION, "%s(invalid texture image)",
callerName);
return GL_TRUE;
}
err = _mesa_error_check_format_and_type(ctx, format, type);
if (err != GL_NO_ERROR) {
_mesa_error(ctx, err,
"%s(incompatible format = %s, type = %s)",
callerName, _mesa_enum_to_string(format),
_mesa_enum_to_string(type));
return GL_TRUE;
}
/* OpenGL ES 1.x and OpenGL ES 2.0 impose additional restrictions on the
* combinations of format, internalFormat, and type that can be used.
* Formats and types that require additional extensions (e.g., GL_FLOAT
* requires GL_OES_texture_float) are filtered elsewhere.
*/
if (_mesa_is_gles(ctx) &&
texture_format_error_check_gles(ctx, format, type,
texImage->InternalFormat,
dimensions, callerName)) {
return GL_TRUE;
}
/* validate the bound PBO, if any */
if (!_mesa_validate_pbo_source(ctx, dimensions, &ctx->Unpack,
width, height, depth, format, type,
INT_MAX, pixels, callerName)) {
return GL_TRUE;
}
if (error_check_subtexture_dimensions(ctx, dimensions,
texImage, xoffset, yoffset, zoffset,
width, height, depth, callerName)) {
return GL_TRUE;
}
if (_mesa_is_format_compressed(texImage->TexFormat)) {
if (_mesa_format_no_online_compression(ctx, texImage->InternalFormat)) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"%s(no compression for format)", callerName);
return GL_TRUE;
}
}
if (ctx->Version >= 30 || ctx->Extensions.EXT_texture_integer) {
/* both source and dest must be integer-valued, or neither */
if (_mesa_is_format_integer_color(texImage->TexFormat) !=
_mesa_is_enum_format_integer(format)) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"%s(integer/non-integer format mismatch)", callerName);
return GL_TRUE;
}
}
return GL_FALSE;
}
/**
* Test glCopyTexImage[12]D() parameters for errors.
*
* \param ctx GL context.
* \param dimensions texture image dimensions (must be 1, 2 or 3).
* \param target texture target given by the user.
* \param level image level given by the user.
* \param internalFormat internal format given by the user.
* \param width image width given by the user.
* \param height image height given by the user.
* \param border texture border.
*
* \return GL_TRUE if an error was detected, or GL_FALSE if no errors.
*
* Verifies each of the parameters against the constants specified in
* __struct gl_contextRec::Const and the supported extensions, and according
* to the OpenGL specification.
*/
static GLboolean
copytexture_error_check( struct gl_context *ctx, GLuint dimensions,
GLenum target, GLint level, GLint internalFormat,
GLint width, GLint height, GLint border )
{
GLint baseFormat;
GLint rb_base_format;
struct gl_renderbuffer *rb;
GLenum rb_internal_format;
/* check target */
if (!legal_texsubimage_target(ctx, dimensions, target, false)) {
_mesa_error(ctx, GL_INVALID_ENUM, "glCopyTexImage%uD(target=%s)",
dimensions, _mesa_enum_to_string(target));
return GL_TRUE;
}
/* level check */
if (level < 0 || level >= _mesa_max_texture_levels(ctx, target)) {
_mesa_error(ctx, GL_INVALID_VALUE,
"glCopyTexImage%dD(level=%d)", dimensions, level);
return GL_TRUE;
}
/* Check that the source buffer is complete */
if (_mesa_is_user_fbo(ctx->ReadBuffer)) {
if (ctx->ReadBuffer->_Status == 0) {
_mesa_test_framebuffer_completeness(ctx, ctx->ReadBuffer);
}
if (ctx->ReadBuffer->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {
_mesa_error(ctx, GL_INVALID_FRAMEBUFFER_OPERATION_EXT,
"glCopyTexImage%dD(invalid readbuffer)", dimensions);
return GL_TRUE;
}
if (ctx->ReadBuffer->Visual.samples > 0) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glCopyTexImage%dD(multisample FBO)", dimensions);
return GL_TRUE;
}
}
/* Check border */
if (border < 0 || border > 1 ||
((ctx->API != API_OPENGL_COMPAT ||
target == GL_TEXTURE_RECTANGLE_NV ||
target == GL_PROXY_TEXTURE_RECTANGLE_NV) && border != 0)) {
_mesa_error(ctx, GL_INVALID_VALUE,
"glCopyTexImage%dD(border=%d)", dimensions, border);
return GL_TRUE;
}
/* OpenGL ES 1.x and OpenGL ES 2.0 impose additional restrictions on the
* internalFormat.
*/
if (_mesa_is_gles(ctx) && !_mesa_is_gles3(ctx)) {
switch (internalFormat) {
case GL_ALPHA:
case GL_RGB:
case GL_RGBA:
case GL_LUMINANCE:
case GL_LUMINANCE_ALPHA:
break;
default:
_mesa_error(ctx, GL_INVALID_ENUM,
"glCopyTexImage%dD(internalFormat=%s)", dimensions,
_mesa_enum_to_string(internalFormat));
return GL_TRUE;
}
} else {
/*
* Section 8.6 (Alternate Texture Image Specification Commands) of the
* OpenGL 4.5 (Compatibility Profile) spec says:
*
* "Parameters level, internalformat, and border are specified using
* the same values, with the same meanings, as the corresponding
* arguments of TexImage2D, except that internalformat may not be
* specified as 1, 2, 3, or 4."
*/
if (internalFormat >= 1 && internalFormat <= 4) {
_mesa_error(ctx, GL_INVALID_ENUM,
"glCopyTexImage%dD(internalFormat=%d)", dimensions,
internalFormat);
return GL_TRUE;
}
}
baseFormat = _mesa_base_tex_format(ctx, internalFormat);
if (baseFormat < 0) {
_mesa_error(ctx, GL_INVALID_ENUM,
"glCopyTexImage%dD(internalFormat=%s)", dimensions,
_mesa_enum_to_string(internalFormat));
return GL_TRUE;
}
rb = _mesa_get_read_renderbuffer_for_format(ctx, internalFormat);
if (rb == NULL) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glCopyTexImage%dD(read buffer)", dimensions);
return GL_TRUE;
}
rb_internal_format = rb->InternalFormat;
rb_base_format = _mesa_base_tex_format(ctx, rb->InternalFormat);
if (_mesa_is_color_format(internalFormat)) {
if (rb_base_format < 0) {
_mesa_error(ctx, GL_INVALID_VALUE,
"glCopyTexImage%dD(internalFormat=%s)", dimensions,
_mesa_enum_to_string(internalFormat));
return GL_TRUE;
}
}
if (_mesa_is_gles(ctx)) {
bool valid = true;
if (_mesa_base_format_component_count(baseFormat) >
_mesa_base_format_component_count(rb_base_format)) {
valid = false;
}
if (baseFormat == GL_DEPTH_COMPONENT ||
baseFormat == GL_DEPTH_STENCIL ||
baseFormat == GL_STENCIL_INDEX ||
rb_base_format == GL_DEPTH_COMPONENT ||
rb_base_format == GL_DEPTH_STENCIL ||
rb_base_format == GL_STENCIL_INDEX ||
((baseFormat == GL_LUMINANCE_ALPHA ||
baseFormat == GL_ALPHA) &&
rb_base_format != GL_RGBA) ||
internalFormat == GL_RGB9_E5) {
valid = false;
}
if (internalFormat == GL_RGB9_E5) {
valid = false;
}
if (!valid) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glCopyTexImage%dD(internalFormat=%s)", dimensions,
_mesa_enum_to_string(internalFormat));
return GL_TRUE;
}
}
if (_mesa_is_gles3(ctx)) {
bool rb_is_srgb = false;
bool dst_is_srgb = false;
if (ctx->Extensions.EXT_framebuffer_sRGB &&
_mesa_get_format_color_encoding(rb->Format) == GL_SRGB) {
rb_is_srgb = true;
}
if (_mesa_get_linear_internalformat(internalFormat) != internalFormat) {
dst_is_srgb = true;
}
if (rb_is_srgb != dst_is_srgb) {
/* Page 137 (page 149 of the PDF) in section 3.8.5 of the
* OpenGLES 3.0.0 spec says:
*
* "The error INVALID_OPERATION is also generated if the
* value of FRAMEBUFFER_ATTACHMENT_COLOR_ENCODING for the
* framebuffer attachment corresponding to the read buffer
* is LINEAR (see section 6.1.13) and internalformat is
* one of the sRGB formats described in section 3.8.16, or
* if the value of FRAMEBUFFER_ATTACHMENT_COLOR_ENCODING is
* SRGB and internalformat is not one of the sRGB formats."
*/
_mesa_error(ctx, GL_INVALID_OPERATION,
"glCopyTexImage%dD(srgb usage mismatch)", dimensions);
return GL_TRUE;
}
/* Page 139, Table 3.15 of OpenGL ES 3.0 spec does not define ReadPixels
* types for SNORM formats. Also, conversion to SNORM formats is not
* allowed by Table 3.2 on Page 110.
*/
if (_mesa_is_enum_format_snorm(internalFormat)) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glCopyTexImage%dD(internalFormat=%s)", dimensions,
_mesa_enum_to_string(internalFormat));
return GL_TRUE;
}
}
if (!_mesa_source_buffer_exists(ctx, baseFormat)) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glCopyTexImage%dD(missing readbuffer)", dimensions);
return GL_TRUE;
}
/* From the EXT_texture_integer spec:
*
* "INVALID_OPERATION is generated by CopyTexImage* and CopyTexSubImage*
* if the texture internalformat is an integer format and the read color
* buffer is not an integer format, or if the internalformat is not an
* integer format and the read color buffer is an integer format."
*/
if (_mesa_is_color_format(internalFormat)) {
bool is_int = _mesa_is_enum_format_integer(internalFormat);
bool is_rbint = _mesa_is_enum_format_integer(rb_internal_format);
bool is_unorm = _mesa_is_enum_format_unorm(internalFormat);
bool is_rbunorm = _mesa_is_enum_format_unorm(rb_internal_format);
if (is_int || is_rbint) {
if (is_int != is_rbint) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glCopyTexImage%dD(integer vs non-integer)", dimensions);
return GL_TRUE;
} else if (_mesa_is_gles(ctx) &&
_mesa_is_enum_format_unsigned_int(internalFormat) !=
_mesa_is_enum_format_unsigned_int(rb_internal_format)) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glCopyTexImage%dD(signed vs unsigned integer)", dimensions);
return GL_TRUE;
}
}
/* From page 138 of OpenGL ES 3.0 spec:
* "The error INVALID_OPERATION is generated if floating-point RGBA
* data is required; if signed integer RGBA data is required and the
* format of the current color buffer is not signed integer; if
* unsigned integer RGBA data is required and the format of the
* current color buffer is not unsigned integer; or if fixed-point
* RGBA data is required and the format of the current color buffer
* is not fixed-point.
*/
if (_mesa_is_gles(ctx) && is_unorm != is_rbunorm)
_mesa_error(ctx, GL_INVALID_OPERATION,
"glCopyTexImage%dD(unorm vs non-unorm)", dimensions);
}
if (_mesa_is_compressed_format(ctx, internalFormat)) {
GLenum err;
if (!_mesa_target_can_be_compressed(ctx, target, internalFormat, &err)) {
_mesa_error(ctx, err,
"glCopyTexImage%dD(target can't be compressed)", dimensions);
return GL_TRUE;
}
if (_mesa_format_no_online_compression(ctx, internalFormat)) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glCopyTexImage%dD(no compression for format)", dimensions);
return GL_TRUE;
}
if (border != 0) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glCopyTexImage%dD(border!=0)", dimensions);
return GL_TRUE;
}
}
if (!mutable_tex_object(ctx, target)) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glCopyTexImage%dD(immutable texture)", dimensions);
return GL_TRUE;
}
/* if we get here, the parameters are OK */
return GL_FALSE;
}
/**
* Test glCopyTexSubImage[12]D() parameters for errors.
* \return GL_TRUE if an error was detected, or GL_FALSE if no errors.
*/
static GLboolean
copytexsubimage_error_check(struct gl_context *ctx, GLuint dimensions,
const struct gl_texture_object *texObj,
GLenum target, GLint level,
GLint xoffset, GLint yoffset, GLint zoffset,
GLint width, GLint height, const char *caller)
{
struct gl_texture_image *texImage;
/* Check that the source buffer is complete */
if (_mesa_is_user_fbo(ctx->ReadBuffer)) {
if (ctx->ReadBuffer->_Status == 0) {
_mesa_test_framebuffer_completeness(ctx, ctx->ReadBuffer);
}
if (ctx->ReadBuffer->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {
_mesa_error(ctx, GL_INVALID_FRAMEBUFFER_OPERATION_EXT,
"%s(invalid readbuffer)", caller);
return GL_TRUE;
}
if (ctx->ReadBuffer->Visual.samples > 0) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"%s(multisample FBO)", caller);
return GL_TRUE;
}
}
/* Check level */
if (level < 0 || level >= _mesa_max_texture_levels(ctx, target)) {
_mesa_error(ctx, GL_INVALID_VALUE, "%s(level=%d)", caller, level);
return GL_TRUE;
}
/* Get dest image pointers */
if (!texObj) {
_mesa_error(ctx, GL_OUT_OF_MEMORY, "%s()", caller);
return GL_TRUE;
}
texImage = _mesa_select_tex_image(texObj, target, level);
if (!texImage) {
/* destination image does not exist */
_mesa_error(ctx, GL_INVALID_OPERATION,
"%s(invalid texture image)", caller);
return GL_TRUE;
}
if (error_check_subtexture_negative_dimensions(ctx, dimensions,
width, height, 1, caller)) {
return GL_TRUE;
}
if (error_check_subtexture_dimensions(ctx, dimensions, texImage,
xoffset, yoffset, zoffset,
width, height, 1, caller)) {
return GL_TRUE;
}
if (_mesa_is_format_compressed(texImage->TexFormat)) {
if (_mesa_format_no_online_compression(ctx, texImage->InternalFormat)) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"%s(no compression for format)", caller);
return GL_TRUE;
}
}
if (texImage->InternalFormat == GL_YCBCR_MESA) {
_mesa_error(ctx, GL_INVALID_OPERATION, "%s()", caller);
return GL_TRUE;
}
if (!_mesa_source_buffer_exists(ctx, texImage->_BaseFormat)) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"%s(missing readbuffer, format=%s)", caller,
_mesa_enum_to_string(texImage->_BaseFormat));
return GL_TRUE;
}
/* From the EXT_texture_integer spec:
*
* "INVALID_OPERATION is generated by CopyTexImage* and
* CopyTexSubImage* if the texture internalformat is an integer format
* and the read color buffer is not an integer format, or if the
* internalformat is not an integer format and the read color buffer
* is an integer format."
*/
if (_mesa_is_color_format(texImage->InternalFormat)) {
struct gl_renderbuffer *rb = ctx->ReadBuffer->_ColorReadBuffer;
if (_mesa_is_format_integer_color(rb->Format) !=
_mesa_is_format_integer_color(texImage->TexFormat)) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"%s(integer vs non-integer)", caller);
return GL_TRUE;
}
}
/* In the ES 3.2 specification's Table 8.13 (Valid CopyTexImage source
* framebuffer/destination texture base internal format combinations),
* all the entries for stencil are left blank (unsupported).
*/
if (_mesa_is_gles(ctx) && _mesa_is_stencil_format(texImage->_BaseFormat)) {
_mesa_error(ctx, GL_INVALID_OPERATION, "%s(stencil disallowed)", caller);
return GL_TRUE;
}
/* if we get here, the parameters are OK */
return GL_FALSE;
}
/** Callback info for walking over FBO hash table */
struct cb_info
{
struct gl_context *ctx;
struct gl_texture_object *texObj;
GLuint level, face;
};
/**
* Check render to texture callback. Called from _mesa_HashWalk().
*/
static void
check_rtt_cb(GLuint key, void *data, void *userData)
{
struct gl_framebuffer *fb = (struct gl_framebuffer *) data;
const struct cb_info *info = (struct cb_info *) userData;
struct gl_context *ctx = info->ctx;
const struct gl_texture_object *texObj = info->texObj;
const GLuint level = info->level, face = info->face;
/* If this is a user-created FBO */
if (_mesa_is_user_fbo(fb)) {
GLuint i;
/* check if any of the FBO's attachments point to 'texObj' */
for (i = 0; i < BUFFER_COUNT; i++) {
struct gl_renderbuffer_attachment *att = fb->Attachment + i;
if (att->Type == GL_TEXTURE &&
att->Texture == texObj &&
att->TextureLevel == level &&
att->CubeMapFace == face) {
_mesa_update_texture_renderbuffer(ctx, fb, att);
assert(att->Renderbuffer->TexImage);
/* Mark fb status as indeterminate to force re-validation */
fb->_Status = 0;
/* Make sure that the revalidation actually happens if this is
* being done to currently-bound buffers.
*/
if (fb == ctx->DrawBuffer || fb == ctx->ReadBuffer)
ctx->NewState |= _NEW_BUFFERS;
}
}
}
}
/**
* When a texture image is specified we have to check if it's bound to
* any framebuffer objects (render to texture) in order to detect changes
* in size or format since that effects FBO completeness.
* Any FBOs rendering into the texture must be re-validated.
*/
void
_mesa_update_fbo_texture(struct gl_context *ctx,
struct gl_texture_object *texObj,
GLuint face, GLuint level)
{
/* Only check this texture if it's been marked as RenderToTexture */
if (texObj->_RenderToTexture) {
struct cb_info info;
info.ctx = ctx;
info.texObj = texObj;
info.level = level;
info.face = face;
_mesa_HashWalk(ctx->Shared->FrameBuffers, check_rtt_cb, &info);
}
}
/**
* If the texture object's GenerateMipmap flag is set and we've
* changed the texture base level image, regenerate the rest of the
* mipmap levels now.
*/
static inline void
check_gen_mipmap(struct gl_context *ctx, GLenum target,
struct gl_texture_object *texObj, GLint level)
{
if (texObj->GenerateMipmap &&
level == texObj->BaseLevel &&
level < texObj->MaxLevel) {
assert(ctx->Driver.GenerateMipmap);
ctx->Driver.GenerateMipmap(ctx, target, texObj);
}
}
/** Debug helper: override the user-requested internal format */
static GLenum
override_internal_format(GLenum internalFormat, GLint width, GLint height)
{
#if 0
if (internalFormat == GL_RGBA16F_ARB ||
internalFormat == GL_RGBA32F_ARB) {
printf("Convert rgba float tex to int %d x %d\n", width, height);
return GL_RGBA;
}
else if (internalFormat == GL_RGB16F_ARB ||
internalFormat == GL_RGB32F_ARB) {
printf("Convert rgb float tex to int %d x %d\n", width, height);
return GL_RGB;
}
else if (internalFormat == GL_LUMINANCE_ALPHA16F_ARB ||
internalFormat == GL_LUMINANCE_ALPHA32F_ARB) {
printf("Convert luminance float tex to int %d x %d\n", width, height);
return GL_LUMINANCE_ALPHA;
}
else if (internalFormat == GL_LUMINANCE16F_ARB ||
internalFormat == GL_LUMINANCE32F_ARB) {
printf("Convert luminance float tex to int %d x %d\n", width, height);
return GL_LUMINANCE;
}
else if (internalFormat == GL_ALPHA16F_ARB ||
internalFormat == GL_ALPHA32F_ARB) {
printf("Convert luminance float tex to int %d x %d\n", width, height);
return GL_ALPHA;
}
/*
else if (internalFormat == GL_COMPRESSED_RGBA_S3TC_DXT1_EXT) {
internalFormat = GL_RGBA;
}
*/
else {
return internalFormat;
}
#else
return internalFormat;
#endif
}
/**
* Choose the actual hardware format for a texture image.
* Try to use the same format as the previous image level when possible.
* Otherwise, ask the driver for the best format.
* It's important to try to choose a consistant format for all levels
* for efficient texture memory layout/allocation. In particular, this
* comes up during automatic mipmap generation.
*/
mesa_format
_mesa_choose_texture_format(struct gl_context *ctx,
struct gl_texture_object *texObj,
GLenum target, GLint level,
GLenum internalFormat, GLenum format, GLenum type)
{
mesa_format f;
/* see if we've already chosen a format for the previous level */
if (level > 0) {
struct gl_texture_image *prevImage =
_mesa_select_tex_image(texObj, target, level - 1);
/* See if the prev level is defined and has an internal format which
* matches the new internal format.
*/
if (prevImage &&
prevImage->Width > 0 &&
prevImage->InternalFormat == internalFormat) {
/* use the same format */
assert(prevImage->TexFormat != MESA_FORMAT_NONE);
return prevImage->TexFormat;
}
}
/* If the application requested compression to an S3TC format but we don't
* have the DXTn library, force a generic compressed format instead.
*/
if (internalFormat != format && format != GL_NONE) {
const GLenum before = internalFormat;
switch (internalFormat) {
case GL_COMPRESSED_RGB_S3TC_DXT1_EXT:
if (!ctx->Mesa_DXTn)
internalFormat = GL_COMPRESSED_RGB;
break;
case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT:
case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT:
case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT:
if (!ctx->Mesa_DXTn)
internalFormat = GL_COMPRESSED_RGBA;
break;
default:
break;
}
if (before != internalFormat) {
_mesa_warning(ctx,
"DXT compression requested (%s), "
"but libtxc_dxtn library not installed. Using %s "
"instead.",
_mesa_enum_to_string(before),
_mesa_enum_to_string(internalFormat));
}
}
/* choose format from scratch */
f = ctx->Driver.ChooseTextureFormat(ctx, target, internalFormat,
format, type);
assert(f != MESA_FORMAT_NONE);
return f;
}
/**
* Adjust pixel unpack params and image dimensions to strip off the
* one-pixel texture border.
*
* Gallium and intel don't support texture borders. They've seldem been used
* and seldom been implemented correctly anyway.
*
* \param unpackNew returns the new pixel unpack parameters
*/
static void
strip_texture_border(GLenum target,
GLint *width, GLint *height, GLint *depth,
const struct gl_pixelstore_attrib *unpack,
struct gl_pixelstore_attrib *unpackNew)
{
assert(width);
assert(height);
assert(depth);
*unpackNew = *unpack;
if (unpackNew->RowLength == 0)
unpackNew->RowLength = *width;
if (unpackNew->ImageHeight == 0)
unpackNew->ImageHeight = *height;
assert(*width >= 3);
unpackNew->SkipPixels++; /* skip the border */
*width = *width - 2; /* reduce the width by two border pixels */
/* The min height of a texture with a border is 3 */
if (*height >= 3 && target != GL_TEXTURE_1D_ARRAY) {
unpackNew->SkipRows++; /* skip the border */
*height = *height - 2; /* reduce the height by two border pixels */
}
if (*depth >= 3 &&
target != GL_TEXTURE_2D_ARRAY &&
target != GL_TEXTURE_CUBE_MAP_ARRAY) {
unpackNew->SkipImages++; /* skip the border */
*depth = *depth - 2; /* reduce the depth by two border pixels */
}
}
/**
* Common code to implement all the glTexImage1D/2D/3D functions
* as well as glCompressedTexImage1D/2D/3D.
* \param compressed only GL_TRUE for glCompressedTexImage1D/2D/3D calls.
* \param format the user's image format (only used if !compressed)
* \param type the user's image type (only used if !compressed)
* \param imageSize only used for glCompressedTexImage1D/2D/3D calls.
*/
static void
teximage(struct gl_context *ctx, GLboolean compressed, GLuint dims,
GLenum target, GLint level, GLint internalFormat,
GLsizei width, GLsizei height, GLsizei depth,
GLint border, GLenum format, GLenum type,
GLsizei imageSize, const GLvoid *pixels)
{
const char *func = compressed ? "glCompressedTexImage" : "glTexImage";
struct gl_pixelstore_attrib unpack_no_border;
const struct gl_pixelstore_attrib *unpack = &ctx->Unpack;
struct gl_texture_object *texObj;
mesa_format texFormat;
GLboolean dimensionsOK, sizeOK;
FLUSH_VERTICES(ctx, 0);
if (MESA_VERBOSE & (VERBOSE_API|VERBOSE_TEXTURE)) {
if (compressed)
_mesa_debug(ctx,
"glCompressedTexImage%uD %s %d %s %d %d %d %d %p\n",
dims,
_mesa_enum_to_string(target), level,
_mesa_enum_to_string(internalFormat),
width, height, depth, border, pixels);
else
_mesa_debug(ctx,
"glTexImage%uD %s %d %s %d %d %d %d %s %s %p\n",
dims,
_mesa_enum_to_string(target), level,
_mesa_enum_to_string(internalFormat),
width, height, depth, border,
_mesa_enum_to_string(format),
_mesa_enum_to_string(type), pixels);
}
internalFormat = override_internal_format(internalFormat, width, height);
/* target error checking */
if (!legal_teximage_target(ctx, dims, target)) {
_mesa_error(ctx, GL_INVALID_ENUM, "%s%uD(target=%s)",
func, dims, _mesa_enum_to_string(target));
return;
}
/* general error checking */
if (compressed) {
if (compressed_texture_error_check(ctx, dims, target, level,
internalFormat,
width, height, depth,
border, imageSize, pixels))
return;
}
else {
if (texture_error_check(ctx, dims, target, level, internalFormat,
format, type, width, height, depth, border,
pixels))
return;
}
/* Here we convert a cpal compressed image into a regular glTexImage2D
* call by decompressing the texture. If we really want to support cpal
* textures in any driver this would have to be changed.
*/
if (ctx->API == API_OPENGLES && compressed && dims == 2) {
switch (internalFormat) {
case GL_PALETTE4_RGB8_OES:
case GL_PALETTE4_RGBA8_OES:
case GL_PALETTE4_R5_G6_B5_OES:
case GL_PALETTE4_RGBA4_OES:
case GL_PALETTE4_RGB5_A1_OES:
case GL_PALETTE8_RGB8_OES:
case GL_PALETTE8_RGBA8_OES:
case GL_PALETTE8_R5_G6_B5_OES:
case GL_PALETTE8_RGBA4_OES:
case GL_PALETTE8_RGB5_A1_OES:
_mesa_cpal_compressed_teximage2d(target, level, internalFormat,
width, height, imageSize, pixels);
return;
}
}
texObj = _mesa_get_current_tex_object(ctx, target);
assert(texObj);
if (compressed) {
/* For glCompressedTexImage() the driver has no choice about the
* texture format since we'll never transcode the user's compressed
* image data. The internalFormat was error checked earlier.
*/
texFormat = _mesa_glenum_to_compressed_format(internalFormat);
}
else {
/* In case of HALF_FLOAT_OES or FLOAT_OES, find corresponding sized
* internal floating point format for the given base format.
*/
if (_mesa_is_gles(ctx) && format == internalFormat) {
if (type == GL_FLOAT) {
texObj->_IsFloat = GL_TRUE;
} else if (type == GL_HALF_FLOAT_OES || type == GL_HALF_FLOAT) {
texObj->_IsHalfFloat = GL_TRUE;
}
internalFormat = adjust_for_oes_float_texture(ctx, format, type);
}
texFormat = _mesa_choose_texture_format(ctx, texObj, target, level,
internalFormat, format, type);
}
assert(texFormat != MESA_FORMAT_NONE);
/* check that width, height, depth are legal for the mipmap level */
dimensionsOK = _mesa_legal_texture_dimensions(ctx, target, level, width,
height, depth, border);
/* check that the texture won't take too much memory, etc */
sizeOK = ctx->Driver.TestProxyTexImage(ctx, proxy_target(target),
0, level, texFormat, 1,
width, height, depth);
if (_mesa_is_proxy_texture(target)) {
/* Proxy texture: just clear or set state depending on error checking */
struct gl_texture_image *texImage =
get_proxy_tex_image(ctx, target, level);
if (!texImage)
return; /* GL_OUT_OF_MEMORY already recorded */
if (dimensionsOK && sizeOK) {
_mesa_init_teximage_fields(ctx, texImage, width, height, depth,
border, internalFormat, texFormat);
}
else {
clear_teximage_fields(texImage);
}
}
else {
/* non-proxy target */
const GLuint face = _mesa_tex_target_to_face(target);
struct gl_texture_image *texImage;
if (!dimensionsOK) {
_mesa_error(ctx, GL_INVALID_VALUE,
"%s%uD(invalid width or height or depth)",
func, dims);
return;
}
if (!sizeOK) {
_mesa_error(ctx, GL_OUT_OF_MEMORY,
"%s%uD(image too large: %d x %d x %d, %s format)",
func, dims, width, height, depth,
_mesa_enum_to_string(internalFormat));
return;
}
/* Allow a hardware driver to just strip out the border, to provide
* reliable but slightly incorrect hardware rendering instead of
* rarely-tested software fallback rendering.
*/
if (border && ctx->Const.StripTextureBorder) {
strip_texture_border(target, &width, &height, &depth, unpack,
&unpack_no_border);
border = 0;
unpack = &unpack_no_border;
}
if (ctx->NewState & _NEW_PIXEL)
_mesa_update_state(ctx);
_mesa_lock_texture(ctx, texObj);
{
texImage = _mesa_get_tex_image(ctx, texObj, target, level);
if (!texImage) {
_mesa_error(ctx, GL_OUT_OF_MEMORY, "%s%uD", func, dims);
}
else {
ctx->Driver.FreeTextureImageBuffer(ctx, texImage);
_mesa_init_teximage_fields(ctx, texImage,
width, height, depth,
border, internalFormat, texFormat);
/* Give the texture to the driver. <pixels> may be null. */
if (width > 0 && height > 0 && depth > 0) {
if (compressed) {
ctx->Driver.CompressedTexImage(ctx, dims, texImage,
imageSize, pixels);
}
else {
ctx->Driver.TexImage(ctx, dims, texImage, format,
type, pixels, unpack);
}
}
check_gen_mipmap(ctx, target, texObj, level);
_mesa_update_fbo_texture(ctx, texObj, face, level);
_mesa_dirty_texobj(ctx, texObj);
}
}
_mesa_unlock_texture(ctx, texObj);
}
}
/*
* Called from the API. Note that width includes the border.
*/
void GLAPIENTRY
_mesa_TexImage1D( GLenum target, GLint level, GLint internalFormat,
GLsizei width, GLint border, GLenum format,
GLenum type, const GLvoid *pixels )
{
GET_CURRENT_CONTEXT(ctx);
teximage(ctx, GL_FALSE, 1, target, level, internalFormat, width, 1, 1,
border, format, type, 0, pixels);
}
void GLAPIENTRY
_mesa_TexImage2D( GLenum target, GLint level, GLint internalFormat,
GLsizei width, GLsizei height, GLint border,
GLenum format, GLenum type,
const GLvoid *pixels )
{
GET_CURRENT_CONTEXT(ctx);
teximage(ctx, GL_FALSE, 2, target, level, internalFormat, width, height, 1,
border, format, type, 0, pixels);
}
/*
* Called by the API or display list executor.
* Note that width and height include the border.
*/
void GLAPIENTRY
_mesa_TexImage3D( GLenum target, GLint level, GLint internalFormat,
GLsizei width, GLsizei height, GLsizei depth,
GLint border, GLenum format, GLenum type,
const GLvoid *pixels )
{
GET_CURRENT_CONTEXT(ctx);
teximage(ctx, GL_FALSE, 3, target, level, internalFormat,
width, height, depth,
border, format, type, 0, pixels);
}
void GLAPIENTRY
_mesa_TexImage3DEXT( GLenum target, GLint level, GLenum internalFormat,
GLsizei width, GLsizei height, GLsizei depth,
GLint border, GLenum format, GLenum type,
const GLvoid *pixels )
{
_mesa_TexImage3D(target, level, (GLint) internalFormat, width, height,
depth, border, format, type, pixels);
}
void GLAPIENTRY
_mesa_EGLImageTargetTexture2DOES (GLenum target, GLeglImageOES image)
{
struct gl_texture_object *texObj;
struct gl_texture_image *texImage;
bool valid_target;
GET_CURRENT_CONTEXT(ctx);
FLUSH_VERTICES(ctx, 0);
switch (target) {
case GL_TEXTURE_2D:
valid_target = ctx->Extensions.OES_EGL_image;
break;
case GL_TEXTURE_EXTERNAL_OES:
valid_target =
_mesa_is_gles(ctx) ? ctx->Extensions.OES_EGL_image_external : false;
break;
default:
valid_target = false;
break;
}
if (!valid_target) {
_mesa_error(ctx, GL_INVALID_ENUM,
"glEGLImageTargetTexture2D(target=%d)", target);
return;
}
if (!image) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glEGLImageTargetTexture2D(image=%p)", image);
return;
}
if (ctx->NewState & _NEW_PIXEL)
_mesa_update_state(ctx);
texObj = _mesa_get_current_tex_object(ctx, target);
if (!texObj)
return;
_mesa_lock_texture(ctx, texObj);
if (texObj->Immutable) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glEGLImageTargetTexture2D(texture is immutable)");
_mesa_unlock_texture(ctx, texObj);
return;
}
texImage = _mesa_get_tex_image(ctx, texObj, target, 0);
if (!texImage) {
_mesa_error(ctx, GL_OUT_OF_MEMORY, "glEGLImageTargetTexture2D");
} else {
ctx->Driver.FreeTextureImageBuffer(ctx, texImage);
ctx->Driver.EGLImageTargetTexture2D(ctx, target,
texObj, texImage, image);
_mesa_dirty_texobj(ctx, texObj);
}
_mesa_unlock_texture(ctx, texObj);
}
/**
* Helper that implements the glTexSubImage1/2/3D()
* and glTextureSubImage1/2/3D() functions.
*/
void
_mesa_texture_sub_image(struct gl_context *ctx, GLuint dims,
struct gl_texture_object *texObj,
struct gl_texture_image *texImage,
GLenum target, GLint level,
GLint xoffset, GLint yoffset, GLint zoffset,
GLsizei width, GLsizei height, GLsizei depth,
GLenum format, GLenum type, const GLvoid *pixels,
bool dsa)
{
FLUSH_VERTICES(ctx, 0);
if (ctx->NewState & _NEW_PIXEL)
_mesa_update_state(ctx);
_mesa_lock_texture(ctx, texObj);
{
if (width > 0 && height > 0 && depth > 0) {
/* If we have a border, offset=-1 is legal. Bias by border width. */
switch (dims) {
case 3:
if (target != GL_TEXTURE_2D_ARRAY)
zoffset += texImage->Border;
/* fall-through */
case 2:
if (target != GL_TEXTURE_1D_ARRAY)
yoffset += texImage->Border;
/* fall-through */
case 1:
xoffset += texImage->Border;
}
ctx->Driver.TexSubImage(ctx, dims, texImage,
xoffset, yoffset, zoffset,
width, height, depth,
format, type, pixels, &ctx->Unpack);
check_gen_mipmap(ctx, target, texObj, level);
/* NOTE: Don't signal _NEW_TEXTURE since we've only changed
* the texel data, not the texture format, size, etc.
*/
}
}
_mesa_unlock_texture(ctx, texObj);
}
/**
* Implement all the glTexSubImage1/2/3D() functions.
* Must split this out this way because of GL_TEXTURE_CUBE_MAP.
*/
static void
texsubimage(struct gl_context *ctx, GLuint dims, GLenum target, GLint level,
GLint xoffset, GLint yoffset, GLint zoffset,
GLsizei width, GLsizei height, GLsizei depth,
GLenum format, GLenum type, const GLvoid *pixels,
const char *callerName)
{
struct gl_texture_object *texObj;
struct gl_texture_image *texImage;
/* check target (proxies not allowed) */
if (!legal_texsubimage_target(ctx, dims, target, false)) {
_mesa_error(ctx, GL_INVALID_ENUM, "glTexSubImage%uD(target=%s)",
dims, _mesa_enum_to_string(target));
return;
}
texObj = _mesa_get_current_tex_object(ctx, target);
if (!texObj)
return;
if (texsubimage_error_check(ctx, dims, texObj, target, level,
xoffset, yoffset, zoffset,
width, height, depth, format, type,
pixels, false, callerName)) {
return; /* error was detected */
}
texImage = _mesa_select_tex_image(texObj, target, level);
/* texsubimage_error_check ensures that texImage is not NULL */
if (MESA_VERBOSE & (VERBOSE_API|VERBOSE_TEXTURE))
_mesa_debug(ctx, "glTexSubImage%uD %s %d %d %d %d %d %d %d %s %s %p\n",
dims,
_mesa_enum_to_string(target), level,
xoffset, yoffset, zoffset, width, height, depth,
_mesa_enum_to_string(format),
_mesa_enum_to_string(type), pixels);
_mesa_texture_sub_image(ctx, dims, texObj, texImage, target, level,
xoffset, yoffset, zoffset, width, height, depth,
format, type, pixels, false);
}
/**
* Implement all the glTextureSubImage1/2/3D() functions.
* Must split this out this way because of GL_TEXTURE_CUBE_MAP.
*/
static void
texturesubimage(struct gl_context *ctx, GLuint dims,
GLuint texture, GLint level,
GLint xoffset, GLint yoffset, GLint zoffset,
GLsizei width, GLsizei height, GLsizei depth,
GLenum format, GLenum type, const GLvoid *pixels,
const char *callerName)
{
struct gl_texture_object *texObj;
struct gl_texture_image *texImage;
int i;
if (MESA_VERBOSE & (VERBOSE_API|VERBOSE_TEXTURE))
_mesa_debug(ctx,
"glTextureSubImage%uD %d %d %d %d %d %d %d %d %s %s %p\n",
dims, texture, level,
xoffset, yoffset, zoffset, width, height, depth,
_mesa_enum_to_string(format),
_mesa_enum_to_string(type), pixels);
/* Get the texture object by Name. */
texObj = _mesa_lookup_texture(ctx, texture);
if (!texObj) {
_mesa_error(ctx, GL_INVALID_OPERATION, "glTextureSubImage%uD(texture)",
dims);
return;
}
/* check target (proxies not allowed) */
if (!legal_texsubimage_target(ctx, dims, texObj->Target, true)) {
_mesa_error(ctx, GL_INVALID_ENUM, "%s(target=%s)",
callerName, _mesa_enum_to_string(texObj->Target));
return;
}
if (texsubimage_error_check(ctx, dims, texObj, texObj->Target, level,
xoffset, yoffset, zoffset,
width, height, depth, format, type,
pixels, true, callerName)) {
return; /* error was detected */
}
/* Must handle special case GL_TEXTURE_CUBE_MAP. */
if (texObj->Target == GL_TEXTURE_CUBE_MAP) {
GLint imageStride;
/*
* What do we do if the user created a texture with the following code
* and then called this function with its handle?
*
* GLuint tex;
* glCreateTextures(GL_TEXTURE_CUBE_MAP, 1, &tex);
* glBindTexture(GL_TEXTURE_CUBE_MAP, tex);
* glTexImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_X, 0, ...);
* glTexImage2D(GL_TEXTURE_CUBE_MAP_NEGATIVE_X, 0, ...);
* glTexImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_Y, 0, ...);
* // Note: GL_TEXTURE_CUBE_MAP_NEGATIVE_Y not set, or given the
* // wrong format, or given the wrong size, etc.
* glTexImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_Z, 0, ...);
* glTexImage2D(GL_TEXTURE_CUBE_MAP_NEGATIVE_Z, 0, ...);
*
* A bug has been filed against the spec for this case. In the
* meantime, we will check for cube completeness.
*
* According to Section 8.17 Texture Completeness in the OpenGL 4.5
* Core Profile spec (30.10.2014):
* "[A] cube map texture is cube complete if the
* following conditions all hold true: The [base level] texture
* images of each of the six cube map faces have identical, positive,
* and square dimensions. The [base level] images were each specified
* with the same internal format."
*
* It seems reasonable to check for cube completeness of an arbitrary
* level here so that the image data has a consistent format and size.
*/
if (!_mesa_cube_level_complete(texObj, level)) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glTextureSubImage%uD(cube map incomplete)",
dims);
return;
}
imageStride = _mesa_image_image_stride(&ctx->Unpack, width, height,
format, type);
/* Copy in each face. */
for (i = zoffset; i < zoffset + depth; ++i) {
texImage = texObj->Image[i][level];
assert(texImage);
_mesa_texture_sub_image(ctx, 3, texObj, texImage, texObj->Target,
level, xoffset, yoffset, 0,
width, height, 1, format,
type, pixels, true);
pixels = (GLubyte *) pixels + imageStride;
}
}
else {
texImage = _mesa_select_tex_image(texObj, texObj->Target, level);
assert(texImage);
_mesa_texture_sub_image(ctx, dims, texObj, texImage, texObj->Target,
level, xoffset, yoffset, zoffset,
width, height, depth, format,
type, pixels, true);
}
}
void GLAPIENTRY
_mesa_TexSubImage1D( GLenum target, GLint level,
GLint xoffset, GLsizei width,
GLenum format, GLenum type,
const GLvoid *pixels )
{
GET_CURRENT_CONTEXT(ctx);
texsubimage(ctx, 1, target, level,
xoffset, 0, 0,
width, 1, 1,
format, type, pixels, "glTexSubImage1D");
}
void GLAPIENTRY
_mesa_TexSubImage2D( GLenum target, GLint level,
GLint xoffset, GLint yoffset,
GLsizei width, GLsizei height,
GLenum format, GLenum type,
const GLvoid *pixels )
{
GET_CURRENT_CONTEXT(ctx);
texsubimage(ctx, 2, target, level,
xoffset, yoffset, 0,
width, height, 1,
format, type, pixels, "glTexSubImage2D");
}
void GLAPIENTRY
_mesa_TexSubImage3D( GLenum target, GLint level,
GLint xoffset, GLint yoffset, GLint zoffset,
GLsizei width, GLsizei height, GLsizei depth,
GLenum format, GLenum type,
const GLvoid *pixels )
{
GET_CURRENT_CONTEXT(ctx);
texsubimage(ctx, 3, target, level,
xoffset, yoffset, zoffset,
width, height, depth,
format, type, pixels, "glTexSubImage3D");
}
void GLAPIENTRY
_mesa_TextureSubImage1D(GLuint texture, GLint level,
GLint xoffset, GLsizei width,
GLenum format, GLenum type,
const GLvoid *pixels)
{
GET_CURRENT_CONTEXT(ctx);
texturesubimage(ctx, 1, texture, level,
xoffset, 0, 0,
width, 1, 1,
format, type, pixels, "glTextureSubImage1D");
}
void GLAPIENTRY
_mesa_TextureSubImage2D(GLuint texture, GLint level,
GLint xoffset, GLint yoffset,
GLsizei width, GLsizei height,
GLenum format, GLenum type,
const GLvoid *pixels)
{
GET_CURRENT_CONTEXT(ctx);
texturesubimage(ctx, 2, texture, level,
xoffset, yoffset, 0,
width, height, 1,
format, type, pixels, "glTextureSubImage2D");
}
void GLAPIENTRY
_mesa_TextureSubImage3D(GLuint texture, GLint level,
GLint xoffset, GLint yoffset, GLint zoffset,
GLsizei width, GLsizei height, GLsizei depth,
GLenum format, GLenum type,
const GLvoid *pixels)
{
GET_CURRENT_CONTEXT(ctx);
texturesubimage(ctx, 3, texture, level,
xoffset, yoffset, zoffset,
width, height, depth,
format, type, pixels, "glTextureSubImage3D");
}
/**
* For glCopyTexSubImage, return the source renderbuffer to copy texel data
* from. This depends on whether the texture contains color or depth values.
*/
static struct gl_renderbuffer *
get_copy_tex_image_source(struct gl_context *ctx, mesa_format texFormat)
{
if (_mesa_get_format_bits(texFormat, GL_DEPTH_BITS) > 0) {
/* reading from depth/stencil buffer */
return ctx->ReadBuffer->Attachment[BUFFER_DEPTH].Renderbuffer;
} else if (_mesa_get_format_bits(texFormat, GL_STENCIL_BITS) > 0) {
return ctx->ReadBuffer->Attachment[BUFFER_STENCIL].Renderbuffer;
} else {
/* copying from color buffer */
return ctx->ReadBuffer->_ColorReadBuffer;
}
}
static void
copytexsubimage_by_slice(struct gl_context *ctx,
struct gl_texture_image *texImage,
GLuint dims,
GLint xoffset, GLint yoffset, GLint zoffset,
struct gl_renderbuffer *rb,
GLint x, GLint y,
GLsizei width, GLsizei height)
{
if (texImage->TexObject->Target == GL_TEXTURE_1D_ARRAY) {
int slice;
/* For 1D arrays, we copy each scanline of the source rectangle into the
* next array slice.
*/
assert(zoffset == 0);
for (slice = 0; slice < height; slice++) {
assert(yoffset + slice < texImage->Height);
ctx->Driver.CopyTexSubImage(ctx, 2, texImage,
xoffset, 0, yoffset + slice,
rb, x, y + slice, width, 1);
}
} else {
ctx->Driver.CopyTexSubImage(ctx, dims, texImage,
xoffset, yoffset, zoffset,
rb, x, y, width, height);
}
}
static GLboolean
formats_differ_in_component_sizes(mesa_format f1, mesa_format f2)
{
GLint f1_r_bits = _mesa_get_format_bits(f1, GL_RED_BITS);
GLint f1_g_bits = _mesa_get_format_bits(f1, GL_GREEN_BITS);
GLint f1_b_bits = _mesa_get_format_bits(f1, GL_BLUE_BITS);
GLint f1_a_bits = _mesa_get_format_bits(f1, GL_ALPHA_BITS);
GLint f2_r_bits = _mesa_get_format_bits(f2, GL_RED_BITS);
GLint f2_g_bits = _mesa_get_format_bits(f2, GL_GREEN_BITS);
GLint f2_b_bits = _mesa_get_format_bits(f2, GL_BLUE_BITS);
GLint f2_a_bits = _mesa_get_format_bits(f2, GL_ALPHA_BITS);
if ((f1_r_bits && f2_r_bits && f1_r_bits != f2_r_bits)
|| (f1_g_bits && f2_g_bits && f1_g_bits != f2_g_bits)
|| (f1_b_bits && f2_b_bits && f1_b_bits != f2_b_bits)
|| (f1_a_bits && f2_a_bits && f1_a_bits != f2_a_bits))
return GL_TRUE;
return GL_FALSE;
}
/**
* Check if the given texture format and size arguments match those
* of the texture image.
* \param return true if arguments match, false otherwise.
*/
static bool
can_avoid_reallocation(const struct gl_texture_image *texImage,
GLenum internalFormat,
mesa_format texFormat, GLint x, GLint y, GLsizei width,
GLsizei height, GLint border)
{
if (texImage->InternalFormat != internalFormat)
return false;
if (texImage->TexFormat != texFormat)
return false;
if (texImage->Border != border)
return false;
if (texImage->Width2 != width)
return false;
if (texImage->Height2 != height)
return false;
return true;
}
/**
* Implement the glCopyTexImage1/2D() functions.
*/
static void
copyteximage(struct gl_context *ctx, GLuint dims,
GLenum target, GLint level, GLenum internalFormat,
GLint x, GLint y, GLsizei width, GLsizei height, GLint border )
{
struct gl_texture_object *texObj;
struct gl_texture_image *texImage;
const GLuint face = _mesa_tex_target_to_face(target);
mesa_format texFormat;
struct gl_renderbuffer *rb;
FLUSH_VERTICES(ctx, 0);
if (MESA_VERBOSE & (VERBOSE_API|VERBOSE_TEXTURE))
_mesa_debug(ctx, "glCopyTexImage%uD %s %d %s %d %d %d %d %d\n",
dims,
_mesa_enum_to_string(target), level,
_mesa_enum_to_string(internalFormat),
x, y, width, height, border);
if (ctx->NewState & NEW_COPY_TEX_STATE)
_mesa_update_state(ctx);
if (copytexture_error_check(ctx, dims, target, level, internalFormat,
width, height, border))
return;
if (!_mesa_legal_texture_dimensions(ctx, target, level, width, height,
1, border)) {
_mesa_error(ctx, GL_INVALID_VALUE,
"glCopyTexImage%uD(invalid width or height)", dims);
return;
}
texObj = _mesa_get_current_tex_object(ctx, target);
assert(texObj);
texFormat = _mesa_choose_texture_format(ctx, texObj, target, level,
internalFormat, GL_NONE, GL_NONE);
/* First check if reallocating the texture buffer can be avoided.
* Without the realloc the copy can be 20x faster.
*/
_mesa_lock_texture(ctx, texObj);
{
texImage = _mesa_select_tex_image(texObj, target, level);
if (texImage && can_avoid_reallocation(texImage, internalFormat, texFormat,
x, y, width, height, border)) {
_mesa_unlock_texture(ctx, texObj);
return _mesa_copy_texture_sub_image(ctx, dims, texObj, target, level,
0, 0, 0, x, y, width, height,
"CopyTexImage");
}
}
_mesa_unlock_texture(ctx, texObj);
_mesa_perf_debug(ctx, MESA_DEBUG_SEVERITY_LOW, "glCopyTexImage "
"can't avoid reallocating texture storage\n");
rb = _mesa_get_read_renderbuffer_for_format(ctx, internalFormat);
if (_mesa_is_gles3(ctx)) {
if (_mesa_is_enum_format_unsized(internalFormat)) {
/* Conversion from GL_RGB10_A2 source buffer format is not allowed in
* OpenGL ES 3.0. Khronos bug# 9807.
*/
if (rb->InternalFormat == GL_RGB10_A2) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glCopyTexImage%uD(Reading from GL_RGB10_A2 buffer"
" and writing to unsized internal format)", dims);
return;
}
}
/* From Page 139 of OpenGL ES 3.0 spec:
* "If internalformat is sized, the internal format of the new texel
* array is internalformat, and this is also the new texel array’s
* effective internal format. If the component sizes of internalformat
* do not exactly match the corresponding component sizes of the source
* buffer’s effective internal format, described below, an
* INVALID_OPERATION error is generated. If internalformat is unsized,
* the internal format of the new texel array is the effective internal
* format of the source buffer, and this is also the new texel array’s
* effective internal format.
*/
else if (formats_differ_in_component_sizes (texFormat, rb->Format)) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glCopyTexImage%uD(componenet size changed in"
" internal format)", dims);
return;
}
}
assert(texFormat != MESA_FORMAT_NONE);
if (!ctx->Driver.TestProxyTexImage(ctx, proxy_target(target),
0, level, texFormat, 1,
width, height, 1)) {
_mesa_error(ctx, GL_OUT_OF_MEMORY,
"glCopyTexImage%uD(image too large)", dims);
return;
}
if (border && ctx->Const.StripTextureBorder) {
x += border;
width -= border * 2;
if (dims == 2) {
y += border;
height -= border * 2;
}
border = 0;
}
_mesa_lock_texture(ctx, texObj);
{
texImage = _mesa_get_tex_image(ctx, texObj, target, level);
if (!texImage) {
_mesa_error(ctx, GL_OUT_OF_MEMORY, "glCopyTexImage%uD", dims);
}
else {
GLint srcX = x, srcY = y, dstX = 0, dstY = 0, dstZ = 0;
/* Free old texture image */
ctx->Driver.FreeTextureImageBuffer(ctx, texImage);
_mesa_init_teximage_fields(ctx, texImage, width, height, 1,
border, internalFormat, texFormat);
if (width && height) {
/* Allocate texture memory (no pixel data yet) */
ctx->Driver.AllocTextureImageBuffer(ctx, texImage);
if (_mesa_clip_copytexsubimage(ctx, &dstX, &dstY, &srcX, &srcY,
&width, &height)) {
struct gl_renderbuffer *srcRb =
get_copy_tex_image_source(ctx, texImage->TexFormat);
copytexsubimage_by_slice(ctx, texImage, dims,
dstX, dstY, dstZ,
srcRb, srcX, srcY, width, height);
}
check_gen_mipmap(ctx, target, texObj, level);
}
_mesa_update_fbo_texture(ctx, texObj, face, level);
_mesa_dirty_texobj(ctx, texObj);
}
}
_mesa_unlock_texture(ctx, texObj);
}
void GLAPIENTRY
_mesa_CopyTexImage1D( GLenum target, GLint level,
GLenum internalFormat,
GLint x, GLint y,
GLsizei width, GLint border )
{
GET_CURRENT_CONTEXT(ctx);
copyteximage(ctx, 1, target, level, internalFormat, x, y, width, 1, border);
}
void GLAPIENTRY
_mesa_CopyTexImage2D( GLenum target, GLint level, GLenum internalFormat,
GLint x, GLint y, GLsizei width, GLsizei height,
GLint border )
{
GET_CURRENT_CONTEXT(ctx);
copyteximage(ctx, 2, target, level, internalFormat,
x, y, width, height, border);
}
/**
* Implementation for glCopyTex(ture)SubImage1/2/3D() functions.
*/
void
_mesa_copy_texture_sub_image(struct gl_context *ctx, GLuint dims,
struct gl_texture_object *texObj,
GLenum target, GLint level,
GLint xoffset, GLint yoffset, GLint zoffset,
GLint x, GLint y,
GLsizei width, GLsizei height,
const char *caller)
{
struct gl_texture_image *texImage;
FLUSH_VERTICES(ctx, 0);
if (MESA_VERBOSE & (VERBOSE_API|VERBOSE_TEXTURE))
_mesa_debug(ctx, "%s %s %d %d %d %d %d %d %d %d\n", caller,
_mesa_enum_to_string(target),
level, xoffset, yoffset, zoffset, x, y, width, height);
if (ctx->NewState & NEW_COPY_TEX_STATE)
_mesa_update_state(ctx);
if (copytexsubimage_error_check(ctx, dims, texObj, target, level,
xoffset, yoffset, zoffset,
width, height, caller)) {
return;
}
_mesa_lock_texture(ctx, texObj);
{
texImage = _mesa_select_tex_image(texObj, target, level);
/* If we have a border, offset=-1 is legal. Bias by border width. */
switch (dims) {
case 3:
if (target != GL_TEXTURE_2D_ARRAY)
zoffset += texImage->Border;
/* fall-through */
case 2:
if (target != GL_TEXTURE_1D_ARRAY)
yoffset += texImage->Border;
/* fall-through */
case 1:
xoffset += texImage->Border;
}
if (_mesa_clip_copytexsubimage(ctx, &xoffset, &yoffset, &x, &y,
&width, &height)) {
struct gl_renderbuffer *srcRb =
get_copy_tex_image_source(ctx, texImage->TexFormat);
copytexsubimage_by_slice(ctx, texImage, dims,
xoffset, yoffset, zoffset,
srcRb, x, y, width, height);
check_gen_mipmap(ctx, target, texObj, level);
/* NOTE: Don't signal _NEW_TEXTURE since we've only changed
* the texel data, not the texture format, size, etc.
*/
}
}
_mesa_unlock_texture(ctx, texObj);
}
void GLAPIENTRY
_mesa_CopyTexSubImage1D( GLenum target, GLint level,
GLint xoffset, GLint x, GLint y, GLsizei width )
{
struct gl_texture_object* texObj;
const char *self = "glCopyTexSubImage1D";
GET_CURRENT_CONTEXT(ctx);
/* Check target (proxies not allowed). Target must be checked prior to
* calling _mesa_get_current_tex_object.
*/
if (!legal_texsubimage_target(ctx, 1, target, false)) {
_mesa_error(ctx, GL_INVALID_ENUM, "%s(invalid target %s)", self,
_mesa_enum_to_string(target));
return;
}
texObj = _mesa_get_current_tex_object(ctx, target);
if (!texObj)
return;
_mesa_copy_texture_sub_image(ctx, 1, texObj, target, level, xoffset, 0, 0,
x, y, width, 1, self);
}
void GLAPIENTRY
_mesa_CopyTexSubImage2D( GLenum target, GLint level,
GLint xoffset, GLint yoffset,
GLint x, GLint y, GLsizei width, GLsizei height )
{
struct gl_texture_object* texObj;
const char *self = "glCopyTexSubImage2D";
GET_CURRENT_CONTEXT(ctx);
/* Check target (proxies not allowed). Target must be checked prior to
* calling _mesa_get_current_tex_object.
*/
if (!legal_texsubimage_target(ctx, 2, target, false)) {
_mesa_error(ctx, GL_INVALID_ENUM, "%s(invalid target %s)", self,
_mesa_enum_to_string(target));
return;
}
texObj = _mesa_get_current_tex_object(ctx, target);
if (!texObj)
return;
_mesa_copy_texture_sub_image(ctx, 2, texObj, target, level,
xoffset, yoffset, 0,
x, y, width, height, self);
}
void GLAPIENTRY
_mesa_CopyTexSubImage3D( GLenum target, GLint level,
GLint xoffset, GLint yoffset, GLint zoffset,
GLint x, GLint y, GLsizei width, GLsizei height )
{
struct gl_texture_object* texObj;
const char *self = "glCopyTexSubImage3D";
GET_CURRENT_CONTEXT(ctx);
/* Check target (proxies not allowed). Target must be checked prior to
* calling _mesa_get_current_tex_object.
*/
if (!legal_texsubimage_target(ctx, 3, target, false)) {
_mesa_error(ctx, GL_INVALID_ENUM, "%s(invalid target %s)", self,
_mesa_enum_to_string(target));
return;
}
texObj = _mesa_get_current_tex_object(ctx, target);
if (!texObj)
return;
_mesa_copy_texture_sub_image(ctx, 3, texObj, target, level,
xoffset, yoffset, zoffset,
x, y, width, height, self);
}
void GLAPIENTRY
_mesa_CopyTextureSubImage1D(GLuint texture, GLint level,
GLint xoffset, GLint x, GLint y, GLsizei width)
{
struct gl_texture_object* texObj;
const char *self = "glCopyTextureSubImage1D";
GET_CURRENT_CONTEXT(ctx);
texObj = _mesa_lookup_texture_err(ctx, texture, self);
if (!texObj)
return;
/* Check target (proxies not allowed). */
if (!legal_texsubimage_target(ctx, 1, texObj->Target, true)) {
_mesa_error(ctx, GL_INVALID_ENUM, "%s(invalid target %s)", self,
_mesa_enum_to_string(texObj->Target));
return;
}
_mesa_copy_texture_sub_image(ctx, 1, texObj, texObj->Target, level,
xoffset, 0, 0, x, y, width, 1, self);
}
void GLAPIENTRY
_mesa_CopyTextureSubImage2D(GLuint texture, GLint level,
GLint xoffset, GLint yoffset,
GLint x, GLint y, GLsizei width, GLsizei height)
{
struct gl_texture_object* texObj;
const char *self = "glCopyTextureSubImage2D";
GET_CURRENT_CONTEXT(ctx);
texObj = _mesa_lookup_texture_err(ctx, texture, self);
if (!texObj)
return;
/* Check target (proxies not allowed). */
if (!legal_texsubimage_target(ctx, 2, texObj->Target, true)) {
_mesa_error(ctx, GL_INVALID_ENUM, "%s(invalid target %s)", self,
_mesa_enum_to_string(texObj->Target));
return;
}
_mesa_copy_texture_sub_image(ctx, 2, texObj, texObj->Target, level,
xoffset, yoffset, 0,
x, y, width, height, self);
}
void GLAPIENTRY
_mesa_CopyTextureSubImage3D(GLuint texture, GLint level,
GLint xoffset, GLint yoffset, GLint zoffset,
GLint x, GLint y, GLsizei width, GLsizei height)
{
struct gl_texture_object* texObj;
const char *self = "glCopyTextureSubImage3D";
GET_CURRENT_CONTEXT(ctx);
texObj = _mesa_lookup_texture_err(ctx, texture, self);
if (!texObj)
return;
/* Check target (proxies not allowed). */
if (!legal_texsubimage_target(ctx, 3, texObj->Target, true)) {
_mesa_error(ctx, GL_INVALID_ENUM, "%s(invalid target %s)", self,
_mesa_enum_to_string(texObj->Target));
return;
}
if (texObj->Target == GL_TEXTURE_CUBE_MAP) {
/* Act like CopyTexSubImage2D */
_mesa_copy_texture_sub_image(ctx, 2, texObj,
GL_TEXTURE_CUBE_MAP_POSITIVE_X + zoffset,
level, xoffset, yoffset, 0,
x, y, width, height, self);
}
else
_mesa_copy_texture_sub_image(ctx, 3, texObj, texObj->Target, level,
xoffset, yoffset, zoffset,
x, y, width, height, self);
}
static bool
check_clear_tex_image(struct gl_context *ctx,
const char *function,
struct gl_texture_image *texImage,
GLenum format, GLenum type,
const void *data,
GLubyte *clearValue)
{
struct gl_texture_object *texObj = texImage->TexObject;
static const GLubyte zeroData[MAX_PIXEL_BYTES];
GLenum internalFormat = texImage->InternalFormat;
GLenum err;
if (texObj->Target == GL_TEXTURE_BUFFER) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"%s(buffer texture)", function);
return false;
}
if (_mesa_is_compressed_format(ctx, internalFormat)) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"%s(compressed texture)", function);
return false;
}
err = _mesa_error_check_format_and_type(ctx, format, type);
if (err != GL_NO_ERROR) {
_mesa_error(ctx, err,
"%s(incompatible format = %s, type = %s)",
function,
_mesa_enum_to_string(format),
_mesa_enum_to_string(type));
return false;
}
/* make sure internal format and format basically agree */
if (!texture_formats_agree(internalFormat, format)) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"%s(incompatible internalFormat = %s, format = %s)",
function,
_mesa_enum_to_string(internalFormat),
_mesa_enum_to_string(format));
return false;
}
if (ctx->Version >= 30 || ctx->Extensions.EXT_texture_integer) {
/* both source and dest must be integer-valued, or neither */
if (_mesa_is_format_integer_color(texImage->TexFormat) !=
_mesa_is_enum_format_integer(format)) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"%s(integer/non-integer format mismatch)",
function);
return false;
}
}
if (!_mesa_texstore(ctx,
1, /* dims */
texImage->_BaseFormat,
texImage->TexFormat,
0, /* dstRowStride */
&clearValue,
1, 1, 1, /* srcWidth/Height/Depth */
format, type,
data ? data : zeroData,
&ctx->DefaultPacking)) {
_mesa_error(ctx, GL_INVALID_OPERATION, "%s(invalid format)", function);
return false;
}
return true;
}
static struct gl_texture_object *
get_tex_obj_for_clear(struct gl_context *ctx,
const char *function,
GLuint texture)
{
struct gl_texture_object *texObj;
if (texture == 0) {
_mesa_error(ctx, GL_INVALID_OPERATION, "%s(zero texture)", function);
return NULL;
}
texObj = _mesa_lookup_texture(ctx, texture);
if (texObj == NULL) {
_mesa_error(ctx, GL_INVALID_OPERATION, "%s(non-gen name)", function);
return NULL;
}
if (texObj->Target == 0) {
_mesa_error(ctx, GL_INVALID_OPERATION, "%s(unbound tex)", function);
return NULL;
}
return texObj;
}
static int
get_tex_images_for_clear(struct gl_context *ctx,
const char *function,
struct gl_texture_object *texObj,
GLint level,
struct gl_texture_image **texImages)
{
GLenum target;
int i;
if (level < 0 || level >= MAX_TEXTURE_LEVELS) {
_mesa_error(ctx, GL_INVALID_OPERATION, "%s(invalid level)", function);
return 0;
}
if (texObj->Target == GL_TEXTURE_CUBE_MAP) {
for (i = 0; i < MAX_FACES; i++) {
target = GL_TEXTURE_CUBE_MAP_POSITIVE_X + i;
texImages[i] = _mesa_select_tex_image(texObj, target, level);
if (texImages[i] == NULL) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"%s(invalid level)", function);
return 0;
}
}
return MAX_FACES;
}
texImages[0] = _mesa_select_tex_image(texObj, texObj->Target, level);
if (texImages[0] == NULL) {
_mesa_error(ctx, GL_INVALID_OPERATION, "%s(invalid level)", function);
return 0;
}
return 1;
}
void GLAPIENTRY
_mesa_ClearTexSubImage( GLuint texture, GLint level,
GLint xoffset, GLint yoffset, GLint zoffset,
GLsizei width, GLsizei height, GLsizei depth,
GLenum format, GLenum type, const void *data )
{
GET_CURRENT_CONTEXT(ctx);
struct gl_texture_object *texObj;
struct gl_texture_image *texImages[MAX_FACES];
GLubyte clearValue[MAX_FACES][MAX_PIXEL_BYTES];
int i, numImages;
int minDepth, maxDepth;
texObj = get_tex_obj_for_clear(ctx, "glClearTexSubImage", texture);
if (texObj == NULL)
return;
_mesa_lock_texture(ctx, texObj);
numImages = get_tex_images_for_clear(ctx, "glClearTexSubImage",
texObj, level, texImages);
if (numImages == 0)
goto out;
if (numImages == 1) {
minDepth = -(int) texImages[0]->Border;
maxDepth = texImages[0]->Depth;
} else {
minDepth = 0;
maxDepth = numImages;
}
if (xoffset < -(GLint) texImages[0]->Border ||
yoffset < -(GLint) texImages[0]->Border ||
zoffset < minDepth ||
width < 0 ||
height < 0 ||
depth < 0 ||
xoffset + width > texImages[0]->Width ||
yoffset + height > texImages[0]->Height ||
zoffset + depth > maxDepth) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glClearSubTexImage(invalid dimensions)");
goto out;
}
if (numImages == 1) {
if (check_clear_tex_image(ctx, "glClearTexSubImage",
texImages[0],
format, type, data, clearValue[0])) {
ctx->Driver.ClearTexSubImage(ctx,
texImages[0],
xoffset, yoffset, zoffset,
width, height, depth,
data ? clearValue[0] : NULL);
}
} else {
for (i = zoffset; i < zoffset + depth; i++) {
if (!check_clear_tex_image(ctx, "glClearTexSubImage",
texImages[i],
format, type, data, clearValue[i]))
goto out;
}
for (i = zoffset; i < zoffset + depth; i++) {
ctx->Driver.ClearTexSubImage(ctx,
texImages[i],
xoffset, yoffset, 0,
width, height, 1,
data ? clearValue[i] : NULL);
}
}
out:
_mesa_unlock_texture(ctx, texObj);
}
void GLAPIENTRY
_mesa_ClearTexImage( GLuint texture, GLint level,
GLenum format, GLenum type, const void *data )
{
GET_CURRENT_CONTEXT(ctx);
struct gl_texture_object *texObj;
struct gl_texture_image *texImages[MAX_FACES];
GLubyte clearValue[MAX_FACES][MAX_PIXEL_BYTES];
int i, numImages;
texObj = get_tex_obj_for_clear(ctx, "glClearTexImage", texture);
if (texObj == NULL)
return;
_mesa_lock_texture(ctx, texObj);
numImages = get_tex_images_for_clear(ctx, "glClearTexImage",
texObj, level, texImages);
for (i = 0; i < numImages; i++) {
if (!check_clear_tex_image(ctx, "glClearTexImage",
texImages[i],
format, type, data,
clearValue[i]))
goto out;
}
for (i = 0; i < numImages; i++) {
ctx->Driver.ClearTexSubImage(ctx, texImages[i],
-(GLint) texImages[i]->Border, /* xoffset */
-(GLint) texImages[i]->Border, /* yoffset */
-(GLint) texImages[i]->Border, /* zoffset */
texImages[i]->Width,
texImages[i]->Height,
texImages[i]->Depth,
data ? clearValue[i] : NULL);
}
out:
_mesa_unlock_texture(ctx, texObj);
}
/**********************************************************************/
/****** Compressed Textures ******/
/**********************************************************************/
/**
* Target checking for glCompressedTexSubImage[123]D().
* \return GL_TRUE if error, GL_FALSE if no error
* Must come before other error checking so that the texture object can
* be correctly retrieved using _mesa_get_current_tex_object.
*/
static GLboolean
compressed_subtexture_target_check(struct gl_context *ctx, GLenum target,
GLint dims, GLenum format, bool dsa,
const char *caller)
{
GLboolean targetOK;
if (dsa && target == GL_TEXTURE_RECTANGLE) {
_mesa_error(ctx, GL_INVALID_OPERATION, "%s(invalid target %s)", caller,
_mesa_enum_to_string(target));
return GL_TRUE;
}
switch (dims) {
case 2:
switch (target) {
case GL_TEXTURE_2D:
targetOK = GL_TRUE;
break;
case GL_TEXTURE_CUBE_MAP_POSITIVE_X:
case GL_TEXTURE_CUBE_MAP_NEGATIVE_X:
case GL_TEXTURE_CUBE_MAP_POSITIVE_Y:
case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y:
case GL_TEXTURE_CUBE_MAP_POSITIVE_Z:
case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z:
targetOK = ctx->Extensions.ARB_texture_cube_map;
break;
default:
targetOK = GL_FALSE;
break;
}
break;
case 3:
switch (target) {
case GL_TEXTURE_CUBE_MAP:
targetOK = dsa && ctx->Extensions.ARB_texture_cube_map;
break;
case GL_TEXTURE_2D_ARRAY:
targetOK = _mesa_is_gles3(ctx) ||
(_mesa_is_desktop_gl(ctx) && ctx->Extensions.EXT_texture_array);
break;
case GL_TEXTURE_CUBE_MAP_ARRAY:
targetOK = _mesa_has_texture_cube_map_array(ctx);
break;
case GL_TEXTURE_3D:
targetOK = GL_TRUE;
/*
* OpenGL 4.5 spec (30.10.2014) says in Section 8.7 Compressed Texture
* Images:
* "An INVALID_OPERATION error is generated by
* CompressedTex*SubImage3D if the internal format of the texture
* is one of the EAC, ETC2, or RGTC formats and either border is
* non-zero, or the effective target for the texture is not
* TEXTURE_2D_ARRAY."
*
* NOTE: that's probably a spec error. It should probably say
* "... or the effective target for the texture is not
* TEXTURE_2D_ARRAY, TEXTURE_CUBE_MAP, nor
* GL_TEXTURE_CUBE_MAP_ARRAY."
* since those targets are 2D images and they support all compression
* formats.
*
* Instead of listing all these, just list those which are allowed,
* which is (at this time) only bptc. Otherwise we'd say s3tc (and
* more) are valid here, which they are not, but of course not
* mentioned by core spec.
*/
switch (format) {
/* These are the only 3D compression formats supported at this time */
case GL_COMPRESSED_RGBA_BPTC_UNORM:
case GL_COMPRESSED_SRGB_ALPHA_BPTC_UNORM:
case GL_COMPRESSED_RGB_BPTC_SIGNED_FLOAT:
case GL_COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT:
/* valid format */
break;
default:
/* invalid format */
_mesa_error(ctx, GL_INVALID_OPERATION,
"%s(invalid target %s for format %s)", caller,
_mesa_enum_to_string(target),
_mesa_enum_to_string(format));
return GL_TRUE;
}
break;
default:
targetOK = GL_FALSE;
}
break;
default:
assert(dims == 1);
/* no 1D compressed textures at this time */
targetOK = GL_FALSE;
break;
}
if (!targetOK) {
_mesa_error(ctx, GL_INVALID_ENUM, "%s(invalid target %s)", caller,
_mesa_enum_to_string(target));
return GL_TRUE;
}
return GL_FALSE;
}
/**
* Error checking for glCompressedTexSubImage[123]D().
* \return GL_TRUE if error, GL_FALSE if no error
*/
static GLboolean
compressed_subtexture_error_check(struct gl_context *ctx, GLint dims,
const struct gl_texture_object *texObj,
GLenum target, GLint level,
GLint xoffset, GLint yoffset, GLint zoffset,
GLsizei width, GLsizei height, GLsizei depth,
GLenum format, GLsizei imageSize,
const GLvoid *data, const char *callerName)
{
struct gl_texture_image *texImage;
GLint expectedSize;
/* this will catch any invalid compressed format token */
if (!_mesa_is_compressed_format(ctx, format)) {
_mesa_error(ctx, GL_INVALID_ENUM,
"%s(format)", callerName);
return GL_TRUE;
}
if (level < 0 || level >= _mesa_max_texture_levels(ctx, target)) {
_mesa_error(ctx, GL_INVALID_VALUE,
"%s(level=%d)",
callerName, level);
return GL_TRUE;
}
/* validate the bound PBO, if any */
if (!_mesa_validate_pbo_source_compressed(ctx, dims, &ctx->Unpack,
imageSize, data, callerName)) {
return GL_TRUE;
}
/* Check for invalid pixel storage modes */
if (!_mesa_compressed_pixel_storage_error_check(ctx, dims,
&ctx->Unpack, callerName)) {
return GL_TRUE;
}
expectedSize = compressed_tex_size(width, height, depth, format);
if (expectedSize != imageSize) {
_mesa_error(ctx, GL_INVALID_VALUE,
"%s(size=%d)",
callerName, imageSize);
return GL_TRUE;
}
texImage = _mesa_select_tex_image(texObj, target, level);
if (!texImage) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"%s(invalid texture image)",
callerName);
return GL_TRUE;
}
if ((GLint) format != texImage->InternalFormat) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"%s(format=%s)",
callerName, _mesa_enum_to_string(format));
return GL_TRUE;
}
if (compressedteximage_only_format(ctx, format)) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"%s(format=%s cannot be updated)",
callerName, _mesa_enum_to_string(format));
return GL_TRUE;
}
if (error_check_subtexture_negative_dimensions(ctx, dims,
width, height, depth,
callerName)) {
return GL_TRUE;
}
if (error_check_subtexture_dimensions(ctx, dims,
texImage, xoffset, yoffset, zoffset,
width, height, depth,
callerName)) {
return GL_TRUE;
}
return GL_FALSE;
}
void GLAPIENTRY
_mesa_CompressedTexImage1D(GLenum target, GLint level,
GLenum internalFormat, GLsizei width,
GLint border, GLsizei imageSize,
const GLvoid *data)
{
GET_CURRENT_CONTEXT(ctx);
teximage(ctx, GL_TRUE, 1, target, level, internalFormat,
width, 1, 1, border, GL_NONE, GL_NONE, imageSize, data);
}
void GLAPIENTRY
_mesa_CompressedTexImage2D(GLenum target, GLint level,
GLenum internalFormat, GLsizei width,
GLsizei height, GLint border, GLsizei imageSize,
const GLvoid *data)
{
GET_CURRENT_CONTEXT(ctx);
teximage(ctx, GL_TRUE, 2, target, level, internalFormat,
width, height, 1, border, GL_NONE, GL_NONE, imageSize, data);
}
void GLAPIENTRY
_mesa_CompressedTexImage3D(GLenum target, GLint level,
GLenum internalFormat, GLsizei width,
GLsizei height, GLsizei depth, GLint border,
GLsizei imageSize, const GLvoid *data)
{
GET_CURRENT_CONTEXT(ctx);
teximage(ctx, GL_TRUE, 3, target, level, internalFormat,
width, height, depth, border, GL_NONE, GL_NONE, imageSize, data);
}
/**
* Common helper for glCompressedTexSubImage1/2/3D() and
* glCompressedTextureSubImage1/2/3D().
*/
void
_mesa_compressed_texture_sub_image(struct gl_context *ctx, GLuint dims,
struct gl_texture_object *texObj,
struct gl_texture_image *texImage,
GLenum target, GLint level,
GLint xoffset, GLint yoffset,
GLint zoffset,
GLsizei width, GLsizei height,
GLsizei depth,
GLenum format, GLsizei imageSize,
const GLvoid *data)
{
FLUSH_VERTICES(ctx, 0);
_mesa_lock_texture(ctx, texObj);
{
if (width > 0 && height > 0 && depth > 0) {
ctx->Driver.CompressedTexSubImage(ctx, dims, texImage,
xoffset, yoffset, zoffset,
width, height, depth,
format, imageSize, data);
check_gen_mipmap(ctx, target, texObj, level);
/* NOTE: Don't signal _NEW_TEXTURE since we've only changed
* the texel data, not the texture format, size, etc.
*/
}
}
_mesa_unlock_texture(ctx, texObj);
}
void GLAPIENTRY
_mesa_CompressedTexSubImage1D(GLenum target, GLint level, GLint xoffset,
GLsizei width, GLenum format,
GLsizei imageSize, const GLvoid *data)
{
struct gl_texture_object *texObj;
struct gl_texture_image *texImage;
GET_CURRENT_CONTEXT(ctx);
if (compressed_subtexture_target_check(ctx, target, 1, format, false,
"glCompressedTexSubImage1D")) {
return;
}
texObj = _mesa_get_current_tex_object(ctx, target);
if (!texObj)
return;
if (compressed_subtexture_error_check(ctx, 1, texObj, target,
level, xoffset, 0, 0,
width, 1, 1,
format, imageSize, data,
"glCompressedTexSubImage1D")) {
return;
}
texImage = _mesa_select_tex_image(texObj, target, level);
assert(texImage);
_mesa_compressed_texture_sub_image(ctx, 1, texObj, texImage, target, level,
xoffset, 0, 0, width, 1, 1,
format, imageSize, data);
}
void GLAPIENTRY
_mesa_CompressedTextureSubImage1D(GLuint texture, GLint level, GLint xoffset,
GLsizei width, GLenum format,
GLsizei imageSize, const GLvoid *data)
{
struct gl_texture_object *texObj;
struct gl_texture_image *texImage;
GET_CURRENT_CONTEXT(ctx);
texObj = _mesa_lookup_texture_err(ctx, texture,
"glCompressedTextureSubImage1D");
if (!texObj)
return;
if (compressed_subtexture_target_check(ctx, texObj->Target, 1, format, true,
"glCompressedTextureSubImage1D")) {
return;
}
if (compressed_subtexture_error_check(ctx, 1, texObj, texObj->Target,
level, xoffset, 0, 0,
width, 1, 1,
format, imageSize, data,
"glCompressedTextureSubImage1D")) {
return;
}
texImage = _mesa_select_tex_image(texObj, texObj->Target, level);
assert(texImage);
_mesa_compressed_texture_sub_image(ctx, 1, texObj, texImage,
texObj->Target, level,
xoffset, 0, 0, width, 1, 1,
format, imageSize, data);
}
void GLAPIENTRY
_mesa_CompressedTexSubImage2D(GLenum target, GLint level, GLint xoffset,
GLint yoffset, GLsizei width, GLsizei height,
GLenum format, GLsizei imageSize,
const GLvoid *data)
{
struct gl_texture_object *texObj;
struct gl_texture_image *texImage;
GET_CURRENT_CONTEXT(ctx);
if (compressed_subtexture_target_check(ctx, target, 2, format, false,
"glCompressedTexSubImage2D")) {
return;
}
texObj = _mesa_get_current_tex_object(ctx, target);
if (!texObj)
return;
if (compressed_subtexture_error_check(ctx, 2, texObj, target,
level, xoffset, yoffset, 0,
width, height, 1,
format, imageSize, data,
"glCompressedTexSubImage2D")) {
return;
}
texImage = _mesa_select_tex_image(texObj, target, level);
assert(texImage);
_mesa_compressed_texture_sub_image(ctx, 2, texObj, texImage, target, level,
xoffset, yoffset, 0, width, height, 1,
format, imageSize, data);
}
void GLAPIENTRY
_mesa_CompressedTextureSubImage2D(GLuint texture, GLint level, GLint xoffset,
GLint yoffset,
GLsizei width, GLsizei height,
GLenum format, GLsizei imageSize,
const GLvoid *data)
{
struct gl_texture_object *texObj;
struct gl_texture_image *texImage;
GET_CURRENT_CONTEXT(ctx);
texObj = _mesa_lookup_texture_err(ctx, texture,
"glCompressedTextureSubImage2D");
if (!texObj)
return;
if (compressed_subtexture_target_check(ctx, texObj->Target, 2, format, true,
"glCompressedTextureSubImage2D")) {
return;
}
if (compressed_subtexture_error_check(ctx, 2, texObj, texObj->Target,
level, xoffset, yoffset, 0,
width, height, 1,
format, imageSize, data,
"glCompressedTextureSubImage2D")) {
return;
}
texImage = _mesa_select_tex_image(texObj, texObj->Target, level);
assert(texImage);
_mesa_compressed_texture_sub_image(ctx, 2, texObj, texImage,
texObj->Target, level,
xoffset, yoffset, 0, width, height, 1,
format, imageSize, data);
}
void GLAPIENTRY
_mesa_CompressedTexSubImage3D(GLenum target, GLint level, GLint xoffset,
GLint yoffset, GLint zoffset, GLsizei width,
GLsizei height, GLsizei depth, GLenum format,
GLsizei imageSize, const GLvoid *data)
{
struct gl_texture_object *texObj;
struct gl_texture_image *texImage;
GET_CURRENT_CONTEXT(ctx);
if (compressed_subtexture_target_check(ctx, target, 3, format, false,
"glCompressedTexSubImage3D")) {
return;
}
texObj = _mesa_get_current_tex_object(ctx, target);
if (!texObj)
return;
if (compressed_subtexture_error_check(ctx, 3, texObj, target,
level, xoffset, yoffset, zoffset,
width, height, depth,
format, imageSize, data,
"glCompressedTexSubImage3D")) {
return;
}
texImage = _mesa_select_tex_image(texObj, target, level);
assert(texImage);
_mesa_compressed_texture_sub_image(ctx, 3, texObj, texImage, target, level,
xoffset, yoffset, zoffset,
width, height, depth,
format, imageSize, data);
}
void GLAPIENTRY
_mesa_CompressedTextureSubImage3D(GLuint texture, GLint level, GLint xoffset,
GLint yoffset, GLint zoffset, GLsizei width,
GLsizei height, GLsizei depth,
GLenum format, GLsizei imageSize,
const GLvoid *data)
{
struct gl_texture_object *texObj;
struct gl_texture_image *texImage;
GET_CURRENT_CONTEXT(ctx);
texObj = _mesa_lookup_texture_err(ctx, texture,
"glCompressedTextureSubImage3D");
if (!texObj)
return;
if (compressed_subtexture_target_check(ctx, texObj->Target, 3, format, true,
"glCompressedTextureSubImage3D")) {
return;
}
if (compressed_subtexture_error_check(ctx, 3, texObj, texObj->Target,
level, xoffset, yoffset, zoffset,
width, height, depth,
format, imageSize, data,
"glCompressedTextureSubImage3D")) {
return;
}
/* Must handle special case GL_TEXTURE_CUBE_MAP. */
if (texObj->Target == GL_TEXTURE_CUBE_MAP) {
const char *pixels = data;
int i;
GLint image_stride;
/* Make sure the texture object is a proper cube.
* (See texturesubimage in teximage.c for details on why this check is
* performed.)
*/
if (!_mesa_cube_level_complete(texObj, level)) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glCompressedTextureSubImage3D(cube map incomplete)");
return;
}
/* Copy in each face. */
for (i = 0; i < 6; ++i) {
texImage = texObj->Image[i][level];
assert(texImage);
_mesa_compressed_texture_sub_image(ctx, 3, texObj, texImage,
texObj->Target, level,
xoffset, yoffset, zoffset,
width, height, 1,
format, imageSize, pixels);
/* Compressed images don't have a client format */
image_stride = _mesa_format_image_size(texImage->TexFormat,
texImage->Width,
texImage->Height, 1);
pixels += image_stride;
imageSize -= image_stride;
}
}
else {
texImage = _mesa_select_tex_image(texObj, texObj->Target, level);
assert(texImage);
_mesa_compressed_texture_sub_image(ctx, 3, texObj, texImage,
texObj->Target, level,
xoffset, yoffset, zoffset,
width, height, depth,
format, imageSize, data);
}
}
static mesa_format
get_texbuffer_format(const struct gl_context *ctx, GLenum internalFormat)
{
if (ctx->API == API_OPENGL_COMPAT) {
switch (internalFormat) {
case GL_ALPHA8:
return MESA_FORMAT_A_UNORM8;
case GL_ALPHA16:
return MESA_FORMAT_A_UNORM16;
case GL_ALPHA16F_ARB:
return MESA_FORMAT_A_FLOAT16;
case GL_ALPHA32F_ARB:
return MESA_FORMAT_A_FLOAT32;
case GL_ALPHA8I_EXT:
return MESA_FORMAT_A_SINT8;
case GL_ALPHA16I_EXT:
return MESA_FORMAT_A_SINT16;
case GL_ALPHA32I_EXT:
return MESA_FORMAT_A_SINT32;
case GL_ALPHA8UI_EXT:
return MESA_FORMAT_A_UINT8;
case GL_ALPHA16UI_EXT:
return MESA_FORMAT_A_UINT16;
case GL_ALPHA32UI_EXT:
return MESA_FORMAT_A_UINT32;
case GL_LUMINANCE8:
return MESA_FORMAT_L_UNORM8;
case GL_LUMINANCE16:
return MESA_FORMAT_L_UNORM16;
case GL_LUMINANCE16F_ARB:
return MESA_FORMAT_L_FLOAT16;
case GL_LUMINANCE32F_ARB:
return MESA_FORMAT_L_FLOAT32;
case GL_LUMINANCE8I_EXT:
return MESA_FORMAT_L_SINT8;
case GL_LUMINANCE16I_EXT:
return MESA_FORMAT_L_SINT16;
case GL_LUMINANCE32I_EXT:
return MESA_FORMAT_L_SINT32;
case GL_LUMINANCE8UI_EXT:
return MESA_FORMAT_L_UINT8;
case GL_LUMINANCE16UI_EXT:
return MESA_FORMAT_L_UINT16;
case GL_LUMINANCE32UI_EXT:
return MESA_FORMAT_L_UINT32;
case GL_LUMINANCE8_ALPHA8:
return MESA_FORMAT_L8A8_UNORM;
case GL_LUMINANCE16_ALPHA16:
return MESA_FORMAT_L16A16_UNORM;
case GL_LUMINANCE_ALPHA16F_ARB:
return MESA_FORMAT_LA_FLOAT16;
case GL_LUMINANCE_ALPHA32F_ARB:
return MESA_FORMAT_LA_FLOAT32;
case GL_LUMINANCE_ALPHA8I_EXT:
return MESA_FORMAT_LA_SINT8;
case GL_LUMINANCE_ALPHA16I_EXT:
return MESA_FORMAT_LA_SINT16;
case GL_LUMINANCE_ALPHA32I_EXT:
return MESA_FORMAT_LA_SINT32;
case GL_LUMINANCE_ALPHA8UI_EXT:
return MESA_FORMAT_LA_UINT8;
case GL_LUMINANCE_ALPHA16UI_EXT:
return MESA_FORMAT_LA_UINT16;
case GL_LUMINANCE_ALPHA32UI_EXT:
return MESA_FORMAT_LA_UINT32;
case GL_INTENSITY8:
return MESA_FORMAT_I_UNORM8;
case GL_INTENSITY16:
return MESA_FORMAT_I_UNORM16;
case GL_INTENSITY16F_ARB:
return MESA_FORMAT_I_FLOAT16;
case GL_INTENSITY32F_ARB:
return MESA_FORMAT_I_FLOAT32;
case GL_INTENSITY8I_EXT:
return MESA_FORMAT_I_SINT8;
case GL_INTENSITY16I_EXT:
return MESA_FORMAT_I_SINT16;
case GL_INTENSITY32I_EXT:
return MESA_FORMAT_I_SINT32;
case GL_INTENSITY8UI_EXT:
return MESA_FORMAT_I_UINT8;
case GL_INTENSITY16UI_EXT:
return MESA_FORMAT_I_UINT16;
case GL_INTENSITY32UI_EXT:
return MESA_FORMAT_I_UINT32;
default:
break;
}
}
if (_mesa_has_ARB_texture_buffer_object_rgb32(ctx) ||
_mesa_has_OES_texture_buffer(ctx)) {
switch (internalFormat) {
case GL_RGB32F:
return MESA_FORMAT_RGB_FLOAT32;
case GL_RGB32UI:
return MESA_FORMAT_RGB_UINT32;
case GL_RGB32I:
return MESA_FORMAT_RGB_SINT32;
default:
break;
}
}
switch (internalFormat) {
case GL_RGBA8:
return MESA_FORMAT_R8G8B8A8_UNORM;
case GL_RGBA16:
if (_mesa_is_gles(ctx))
return MESA_FORMAT_NONE;
return MESA_FORMAT_RGBA_UNORM16;
case GL_RGBA16F_ARB:
return MESA_FORMAT_RGBA_FLOAT16;
case GL_RGBA32F_ARB:
return MESA_FORMAT_RGBA_FLOAT32;
case GL_RGBA8I_EXT:
return MESA_FORMAT_RGBA_SINT8;
case GL_RGBA16I_EXT:
return MESA_FORMAT_RGBA_SINT16;
case GL_RGBA32I_EXT:
return MESA_FORMAT_RGBA_SINT32;
case GL_RGBA8UI_EXT:
return MESA_FORMAT_RGBA_UINT8;
case GL_RGBA16UI_EXT:
return MESA_FORMAT_RGBA_UINT16;
case GL_RGBA32UI_EXT:
return MESA_FORMAT_RGBA_UINT32;
case GL_RG8:
return MESA_FORMAT_R8G8_UNORM;
case GL_RG16:
if (_mesa_is_gles(ctx))
return MESA_FORMAT_NONE;
return MESA_FORMAT_R16G16_UNORM;
case GL_RG16F:
return MESA_FORMAT_RG_FLOAT16;
case GL_RG32F:
return MESA_FORMAT_RG_FLOAT32;
case GL_RG8I:
return MESA_FORMAT_RG_SINT8;
case GL_RG16I:
return MESA_FORMAT_RG_SINT16;
case GL_RG32I:
return MESA_FORMAT_RG_SINT32;
case GL_RG8UI:
return MESA_FORMAT_RG_UINT8;
case GL_RG16UI:
return MESA_FORMAT_RG_UINT16;
case GL_RG32UI:
return MESA_FORMAT_RG_UINT32;
case GL_R8:
return MESA_FORMAT_R_UNORM8;
case GL_R16:
if (_mesa_is_gles(ctx))
return MESA_FORMAT_NONE;
return MESA_FORMAT_R_UNORM16;
case GL_R16F:
return MESA_FORMAT_R_FLOAT16;
case GL_R32F:
return MESA_FORMAT_R_FLOAT32;
case GL_R8I:
return MESA_FORMAT_R_SINT8;
case GL_R16I:
return MESA_FORMAT_R_SINT16;
case GL_R32I:
return MESA_FORMAT_R_SINT32;
case GL_R8UI:
return MESA_FORMAT_R_UINT8;
case GL_R16UI:
return MESA_FORMAT_R_UINT16;
case GL_R32UI:
return MESA_FORMAT_R_UINT32;
default:
return MESA_FORMAT_NONE;
}
}
mesa_format
_mesa_validate_texbuffer_format(const struct gl_context *ctx,
GLenum internalFormat)
{
mesa_format format = get_texbuffer_format(ctx, internalFormat);
GLenum datatype;
if (format == MESA_FORMAT_NONE)
return MESA_FORMAT_NONE;
datatype = _mesa_get_format_datatype(format);
/* The GL_ARB_texture_buffer_object spec says:
*
* "If ARB_texture_float is not supported, references to the
* floating-point internal formats provided by that extension should be
* removed, and such formats may not be passed to TexBufferARB."
*
* As a result, GL_HALF_FLOAT internal format depends on both
* GL_ARB_texture_float and GL_ARB_half_float_pixel.
*/
if ((datatype == GL_FLOAT || datatype == GL_HALF_FLOAT) &&
!ctx->Extensions.ARB_texture_float)
return MESA_FORMAT_NONE;
if (!ctx->Extensions.ARB_texture_rg) {
GLenum base_format = _mesa_get_format_base_format(format);
if (base_format == GL_R || base_format == GL_RG)
return MESA_FORMAT_NONE;
}
if (!ctx->Extensions.ARB_texture_buffer_object_rgb32) {
GLenum base_format = _mesa_get_format_base_format(format);
if (base_format == GL_RGB)
return MESA_FORMAT_NONE;
}
return format;
}
/**
* Do work common to glTexBuffer, glTexBufferRange, glTextureBuffer
* and glTextureBufferRange, including some error checking.
*/
static void
texture_buffer_range(struct gl_context *ctx,
struct gl_texture_object *texObj,
GLenum internalFormat,
struct gl_buffer_object *bufObj,
GLintptr offset, GLsizeiptr size,
const char *caller)
{
GLintptr oldOffset = texObj->BufferOffset;
GLsizeiptr oldSize = texObj->BufferSize;
mesa_format format;
/* NOTE: ARB_texture_buffer_object has interactions with
* the compatibility profile that are not implemented.
*/
if (!_mesa_has_ARB_texture_buffer_object(ctx) &&
!_mesa_has_OES_texture_buffer(ctx)) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"%s(ARB_texture_buffer_object is not"
" implemented for the compatibility profile)", caller);
return;
}
format = _mesa_validate_texbuffer_format(ctx, internalFormat);
if (format == MESA_FORMAT_NONE) {
_mesa_error(ctx, GL_INVALID_ENUM, "%s(internalFormat %s)",
caller, _mesa_enum_to_string(internalFormat));
return;
}
FLUSH_VERTICES(ctx, 0);
_mesa_lock_texture(ctx, texObj);
{
_mesa_reference_buffer_object(ctx, &texObj->BufferObject, bufObj);
texObj->BufferObjectFormat = internalFormat;
texObj->_BufferObjectFormat = format;
texObj->BufferOffset = offset;
texObj->BufferSize = size;
}
_mesa_unlock_texture(ctx, texObj);
if (ctx->Driver.TexParameter) {
if (offset != oldOffset) {
ctx->Driver.TexParameter(ctx, texObj, GL_TEXTURE_BUFFER_OFFSET);
}
if (size != oldSize) {
ctx->Driver.TexParameter(ctx, texObj, GL_TEXTURE_BUFFER_SIZE);
}
}
ctx->NewDriverState |= ctx->DriverFlags.NewTextureBuffer;
if (bufObj) {
bufObj->UsageHistory |= USAGE_TEXTURE_BUFFER;
}
}
/**
* Make sure the texture buffer target is GL_TEXTURE_BUFFER.
* Return true if it is, and return false if it is not
* (and throw INVALID ENUM as dictated in the OpenGL 4.5
* core spec, 02.02.2015, PDF page 245).
*/
static bool
check_texture_buffer_target(struct gl_context *ctx, GLenum target,
const char *caller)
{
if (target != GL_TEXTURE_BUFFER_ARB) {
_mesa_error(ctx, GL_INVALID_ENUM,
"%s(texture target is not GL_TEXTURE_BUFFER)", caller);
return false;
}
else
return true;
}
/**
* Check for errors related to the texture buffer range.
* Return false if errors are found, true if none are found.
*/
static bool
check_texture_buffer_range(struct gl_context *ctx,
struct gl_buffer_object *bufObj,
GLintptr offset, GLsizeiptr size,
const char *caller)
{
/* OpenGL 4.5 core spec (02.02.2015) says in Section 8.9 Buffer
* Textures (PDF page 245):
* "An INVALID_VALUE error is generated if offset is negative, if
* size is less than or equal to zero, or if offset + size is greater
* than the value of BUFFER_SIZE for the buffer bound to target."
*/
if (offset < 0) {
_mesa_error(ctx, GL_INVALID_VALUE, "%s(offset=%d < 0)", caller,
(int) offset);
return false;
}
if (size <= 0) {
_mesa_error(ctx, GL_INVALID_VALUE, "%s(size=%d <= 0)", caller,
(int) size);
return false;
}
if (offset + size > bufObj->Size) {
_mesa_error(ctx, GL_INVALID_VALUE,
"%s(offset=%d + size=%d > buffer_size=%d)", caller,
(int) offset, (int) size, (int) bufObj->Size);
return false;
}
/* OpenGL 4.5 core spec (02.02.2015) says in Section 8.9 Buffer
* Textures (PDF page 245):
* "An INVALID_VALUE error is generated if offset is not an integer
* multiple of the value of TEXTURE_BUFFER_OFFSET_ALIGNMENT."
*/
if (offset % ctx->Const.TextureBufferOffsetAlignment) {
_mesa_error(ctx, GL_INVALID_VALUE,
"%s(invalid offset alignment)", caller);
return false;
}
return true;
}
/** GL_ARB_texture_buffer_object */
void GLAPIENTRY
_mesa_TexBuffer(GLenum target, GLenum internalFormat, GLuint buffer)
{
struct gl_texture_object *texObj;
struct gl_buffer_object *bufObj;
GET_CURRENT_CONTEXT(ctx);
/* Need to catch a bad target before it gets to
* _mesa_get_current_tex_object.
*/
if (!check_texture_buffer_target(ctx, target, "glTexBuffer"))
return;
if (buffer) {
bufObj = _mesa_lookup_bufferobj_err(ctx, buffer, "glTexBuffer");
if (!bufObj)
return;
} else
bufObj = NULL;
texObj = _mesa_get_current_tex_object(ctx, target);
if (!texObj)
return;
texture_buffer_range(ctx, texObj, internalFormat, bufObj, 0,
buffer ? -1 : 0, "glTexBuffer");
}
/** GL_ARB_texture_buffer_range */
void GLAPIENTRY
_mesa_TexBufferRange(GLenum target, GLenum internalFormat, GLuint buffer,
GLintptr offset, GLsizeiptr size)
{
struct gl_texture_object *texObj;
struct gl_buffer_object *bufObj;
GET_CURRENT_CONTEXT(ctx);
/* Need to catch a bad target before it gets to
* _mesa_get_current_tex_object.
*/
if (!check_texture_buffer_target(ctx, target, "glTexBufferRange"))
return;
if (buffer) {
bufObj = _mesa_lookup_bufferobj_err(ctx, buffer, "glTexBufferRange");
if (!bufObj)
return;
if (!check_texture_buffer_range(ctx, bufObj, offset, size,
"glTexBufferRange"))
return;
} else {
/* OpenGL 4.5 core spec (02.02.2015) says in Section 8.9 Buffer
* Textures (PDF page 254):
* "If buffer is zero, then any buffer object attached to the buffer
* texture is detached, the values offset and size are ignored and
* the state for offset and size for the buffer texture are reset to
* zero."
*/
offset = 0;
size = 0;
bufObj = NULL;
}
texObj = _mesa_get_current_tex_object(ctx, target);
if (!texObj)
return;
texture_buffer_range(ctx, texObj, internalFormat, bufObj,
offset, size, "glTexBufferRange");
}
void GLAPIENTRY
_mesa_TextureBuffer(GLuint texture, GLenum internalFormat, GLuint buffer)
{
struct gl_texture_object *texObj;
struct gl_buffer_object *bufObj;
GET_CURRENT_CONTEXT(ctx);
if (buffer) {
bufObj = _mesa_lookup_bufferobj_err(ctx, buffer, "glTextureBuffer");
if (!bufObj)
return;
} else
bufObj = NULL;
/* Get the texture object by Name. */
texObj = _mesa_lookup_texture_err(ctx, texture, "glTextureBuffer");
if (!texObj)
return;
if (!check_texture_buffer_target(ctx, texObj->Target, "glTextureBuffer"))
return;
texture_buffer_range(ctx, texObj, internalFormat,
bufObj, 0, buffer ? -1 : 0, "glTextureBuffer");
}
void GLAPIENTRY
_mesa_TextureBufferRange(GLuint texture, GLenum internalFormat, GLuint buffer,
GLintptr offset, GLsizeiptr size)
{
struct gl_texture_object *texObj;
struct gl_buffer_object *bufObj;
GET_CURRENT_CONTEXT(ctx);
if (buffer) {
bufObj = _mesa_lookup_bufferobj_err(ctx, buffer,
"glTextureBufferRange");
if (!bufObj)
return;
if (!check_texture_buffer_range(ctx, bufObj, offset, size,
"glTextureBufferRange"))
return;
} else {
/* OpenGL 4.5 core spec (02.02.2015) says in Section 8.9 Buffer
* Textures (PDF page 254):
* "If buffer is zero, then any buffer object attached to the buffer
* texture is detached, the values offset and size are ignored and
* the state for offset and size for the buffer texture are reset to
* zero."
*/
offset = 0;
size = 0;
bufObj = NULL;
}
/* Get the texture object by Name. */
texObj = _mesa_lookup_texture_err(ctx, texture, "glTextureBufferRange");
if (!texObj)
return;
if (!check_texture_buffer_target(ctx, texObj->Target,
"glTextureBufferRange"))
return;
texture_buffer_range(ctx, texObj, internalFormat,
bufObj, offset, size, "glTextureBufferRange");
}
GLboolean
_mesa_is_renderable_texture_format(struct gl_context *ctx, GLenum internalformat)
{
/* Everything that is allowed for renderbuffers,
* except for a base format of GL_STENCIL_INDEX, unless supported.
*/
GLenum baseFormat = _mesa_base_fbo_format(ctx, internalformat);
if (ctx->Extensions.ARB_texture_stencil8)
return baseFormat != 0;
else
return baseFormat != 0 && baseFormat != GL_STENCIL_INDEX;
}
/** GL_ARB_texture_multisample */
static GLboolean
check_multisample_target(GLuint dims, GLenum target, bool dsa)
{
switch(target) {
case GL_TEXTURE_2D_MULTISAMPLE:
return dims == 2;
case GL_PROXY_TEXTURE_2D_MULTISAMPLE:
return dims == 2 && !dsa;
case GL_TEXTURE_2D_MULTISAMPLE_ARRAY:
return dims == 3;
case GL_PROXY_TEXTURE_2D_MULTISAMPLE_ARRAY:
return dims == 3 && !dsa;
default:
return GL_FALSE;
}
}
static void
texture_image_multisample(struct gl_context *ctx, GLuint dims,
struct gl_texture_object *texObj,
GLenum target, GLsizei samples,
GLint internalformat, GLsizei width,
GLsizei height, GLsizei depth,
GLboolean fixedsamplelocations,
GLboolean immutable, const char *func)
{
struct gl_texture_image *texImage;
GLboolean sizeOK, dimensionsOK, samplesOK;
mesa_format texFormat;
GLenum sample_count_error;
bool dsa = strstr(func, "ture") ? true : false;
if (MESA_VERBOSE & (VERBOSE_API|VERBOSE_TEXTURE)) {
_mesa_debug(ctx, "%s(target=%s, samples=%d)\n", func,
_mesa_enum_to_string(target), samples);
}
if (!((ctx->Extensions.ARB_texture_multisample
&& _mesa_is_desktop_gl(ctx))) && !_mesa_is_gles31(ctx)) {
_mesa_error(ctx, GL_INVALID_OPERATION, "%s(unsupported)", func);
return;
}
if (samples < 1) {
_mesa_error(ctx, GL_INVALID_VALUE, "%s(samples < 1)", func);
return;
}
if (!check_multisample_target(dims, target, dsa)) {
if (dsa) {
_mesa_error(ctx, GL_INVALID_OPERATION, "%s(target)", func);
return;
}
else {
_mesa_error(ctx, GL_INVALID_ENUM, "%s(target)", func);
return;
}
}
/* check that the specified internalformat is color/depth/stencil-renderable;
* refer GL3.1 spec 4.4.4
*/
if (immutable && !_mesa_is_legal_tex_storage_format(ctx, internalformat)) {
_mesa_error(ctx, GL_INVALID_ENUM,
"%s(internalformat=%s not legal for immutable-format)",
func, _mesa_enum_to_string(internalformat));
return;
}
if (!_mesa_is_renderable_texture_format(ctx, internalformat)) {
/* Page 172 of OpenGL ES 3.1 spec says:
* "An INVALID_ENUM error is generated if sizedinternalformat is not
* color-renderable, depth-renderable, or stencil-renderable (as
* defined in section 9.4).
*
* (Same error is also defined for desktop OpenGL for multisample
* teximage/texstorage functions.)
*/
_mesa_error(ctx, GL_INVALID_ENUM, "%s(internalformat=%s)", func,
_mesa_enum_to_string(internalformat));
return;
}
sample_count_error = _mesa_check_sample_count(ctx, target,
internalformat, samples);
samplesOK = sample_count_error == GL_NO_ERROR;
/* Page 254 of OpenGL 4.4 spec says:
* "Proxy arrays for two-dimensional multisample and two-dimensional
* multisample array textures are operated on in the same way when
* TexImage2DMultisample is called with target specified as
* PROXY_TEXTURE_2D_MULTISAMPLE, or TexImage3DMultisample is called
* with target specified as PROXY_TEXTURE_2D_MULTISAMPLE_ARRAY.
* However, if samples is not supported, then no error is generated.
*/
if (!samplesOK && !_mesa_is_proxy_texture(target)) {
_mesa_error(ctx, sample_count_error, "%s(samples)", func);
return;
}
if (immutable && (!texObj || (texObj->Name == 0))) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"%s(texture object 0)",
func);
return;
}
texImage = _mesa_get_tex_image(ctx, texObj, 0, 0);
if (texImage == NULL) {
_mesa_error(ctx, GL_OUT_OF_MEMORY, "%s()", func);
return;
}
texFormat = _mesa_choose_texture_format(ctx, texObj, target, 0,
internalformat, GL_NONE, GL_NONE);
assert(texFormat != MESA_FORMAT_NONE);
dimensionsOK = _mesa_legal_texture_dimensions(ctx, target, 0,
width, height, depth, 0);
sizeOK = ctx->Driver.TestProxyTexImage(ctx, target, 0, 0, texFormat,
samples, width, height, depth);
if (_mesa_is_proxy_texture(target)) {
if (samplesOK && dimensionsOK && sizeOK) {
init_teximage_fields_ms(ctx, texImage, width, height, depth, 0,
internalformat, texFormat,
samples, fixedsamplelocations);
}
else {
/* clear all image fields */
clear_teximage_fields(texImage);
}
}
else {
if (!dimensionsOK) {
_mesa_error(ctx, GL_INVALID_VALUE,
"%s(invalid width or height)", func);
return;
}
if (!sizeOK) {
_mesa_error(ctx, GL_OUT_OF_MEMORY, "%s(texture too large)", func);
return;
}
/* Check if texObj->Immutable is set */
if (texObj->Immutable) {
_mesa_error(ctx, GL_INVALID_OPERATION, "%s(immutable)", func);
return;
}
ctx->Driver.FreeTextureImageBuffer(ctx, texImage);
init_teximage_fields_ms(ctx, texImage, width, height, depth, 0,
internalformat, texFormat,
samples, fixedsamplelocations);
if (width > 0 && height > 0 && depth > 0) {
if (!ctx->Driver.AllocTextureStorage(ctx, texObj, 1,
width, height, depth)) {
/* tidy up the texture image state. strictly speaking,
* we're allowed to just leave this in whatever state we
* like, but being tidy is good.
*/
_mesa_init_teximage_fields(ctx, texImage,
0, 0, 0, 0, GL_NONE, MESA_FORMAT_NONE);
}
}
texObj->Immutable |= immutable;
if (immutable) {
_mesa_set_texture_view_state(ctx, texObj, target, 1);
}
_mesa_update_fbo_texture(ctx, texObj, 0, 0);
}
}
void GLAPIENTRY
_mesa_TexImage2DMultisample(GLenum target, GLsizei samples,
GLenum internalformat, GLsizei width,
GLsizei height, GLboolean fixedsamplelocations)
{
struct gl_texture_object *texObj;
GET_CURRENT_CONTEXT(ctx);
texObj = _mesa_get_current_tex_object(ctx, target);
if (!texObj)
return;
texture_image_multisample(ctx, 2, texObj, target, samples,
internalformat, width, height, 1,
fixedsamplelocations, GL_FALSE,
"glTexImage2DMultisample");
}
void GLAPIENTRY
_mesa_TexImage3DMultisample(GLenum target, GLsizei samples,
GLenum internalformat, GLsizei width,
GLsizei height, GLsizei depth,
GLboolean fixedsamplelocations)
{
struct gl_texture_object *texObj;
GET_CURRENT_CONTEXT(ctx);
texObj = _mesa_get_current_tex_object(ctx, target);
if (!texObj)
return;
texture_image_multisample(ctx, 3, texObj, target, samples,
internalformat, width, height, depth,
fixedsamplelocations, GL_FALSE,
"glTexImage3DMultisample");
}
static bool
valid_texstorage_ms_parameters(GLsizei width, GLsizei height, GLsizei depth,
GLsizei samples, unsigned dims)
{
GET_CURRENT_CONTEXT(ctx);
if (!_mesa_valid_tex_storage_dim(width, height, depth)) {
_mesa_error(ctx, GL_INVALID_VALUE,
"glTexStorage%uDMultisample(width=%d,height=%d,depth=%d)",
dims, width, height, depth);
return false;
}
return true;
}
void GLAPIENTRY
_mesa_TexStorage2DMultisample(GLenum target, GLsizei samples,
GLenum internalformat, GLsizei width,
GLsizei height, GLboolean fixedsamplelocations)
{
struct gl_texture_object *texObj;
GET_CURRENT_CONTEXT(ctx);
texObj = _mesa_get_current_tex_object(ctx, target);
if (!texObj)
return;
if (!valid_texstorage_ms_parameters(width, height, 1, samples, 2))
return;
texture_image_multisample(ctx, 2, texObj, target, samples,
internalformat, width, height, 1,
fixedsamplelocations, GL_TRUE,
"glTexStorage2DMultisample");
}
void GLAPIENTRY
_mesa_TexStorage3DMultisample(GLenum target, GLsizei samples,
GLenum internalformat, GLsizei width,
GLsizei height, GLsizei depth,
GLboolean fixedsamplelocations)
{
struct gl_texture_object *texObj;
GET_CURRENT_CONTEXT(ctx);
texObj = _mesa_get_current_tex_object(ctx, target);
if (!texObj)
return;
if (!valid_texstorage_ms_parameters(width, height, depth, samples, 3))
return;
texture_image_multisample(ctx, 3, texObj, target, samples,
internalformat, width, height, depth,
fixedsamplelocations, GL_TRUE,
"glTexStorage3DMultisample");
}
void GLAPIENTRY
_mesa_TextureStorage2DMultisample(GLuint texture, GLsizei samples,
GLenum internalformat, GLsizei width,
GLsizei height,
GLboolean fixedsamplelocations)
{
struct gl_texture_object *texObj;
GET_CURRENT_CONTEXT(ctx);
texObj = _mesa_lookup_texture_err(ctx, texture,
"glTextureStorage2DMultisample");
if (!texObj)
return;
if (!valid_texstorage_ms_parameters(width, height, 1, samples, 2))
return;
texture_image_multisample(ctx, 2, texObj, texObj->Target, samples,
internalformat, width, height, 1,
fixedsamplelocations, GL_TRUE,
"glTextureStorage2DMultisample");
}
void GLAPIENTRY
_mesa_TextureStorage3DMultisample(GLuint texture, GLsizei samples,
GLenum internalformat, GLsizei width,
GLsizei height, GLsizei depth,
GLboolean fixedsamplelocations)
{
struct gl_texture_object *texObj;
GET_CURRENT_CONTEXT(ctx);
/* Get the texture object by Name. */
texObj = _mesa_lookup_texture_err(ctx, texture,
"glTextureStorage3DMultisample");
if (!texObj)
return;
if (!valid_texstorage_ms_parameters(width, height, depth, samples, 3))
return;
texture_image_multisample(ctx, 3, texObj, texObj->Target, samples,
internalformat, width, height, depth,
fixedsamplelocations, GL_TRUE,
"glTextureStorage3DMultisample");
}