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/*
* 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
* BRIAN PAUL 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 "mfeatures.h"
#include "state.h"
#include "texcompress.h"
#include "texcompress_cpal.h"
#include "teximage.h"
#include "texobj.h"
#include "texstate.h"
#include "mtypes.h"
#include "glformats.h"
/* Inexplicably, GL_HALF_FLOAT_OES has a different value than GL_HALF_FLOAT.
*/
#ifndef GL_HALF_FLOAT_OES
#define GL_HALF_FLOAT_OES 0x8D61
#endif
/**
* 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)
/**
* Return the simple base format for a given internal texture format.
* For example, given GL_LUMINANCE12_ALPHA4, return GL_LUMINANCE_ALPHA.
*
* \param ctx GL context.
* \param internalFormat the internal texture format token or 1, 2, 3, or 4.
*
* \return the corresponding \u base internal format (GL_ALPHA, GL_LUMINANCE,
* GL_LUMANCE_ALPHA, GL_INTENSITY, GL_RGB, or GL_RGBA), or -1 if invalid enum.
*
* This is the format which is used during texture application (i.e. the
* texture format and env mode determine the arithmetic used.
*/
GLint
_mesa_base_tex_format( struct gl_context *ctx, GLint internalFormat )
{
switch (internalFormat) {
case GL_ALPHA:
case GL_ALPHA4:
case GL_ALPHA8:
case GL_ALPHA12:
case GL_ALPHA16:
return (ctx->API != API_OPENGL_CORE) ? GL_ALPHA : -1;
case 1:
case GL_LUMINANCE:
case GL_LUMINANCE4:
case GL_LUMINANCE8:
case GL_LUMINANCE12:
case GL_LUMINANCE16:
return (ctx->API != API_OPENGL_CORE) ? GL_LUMINANCE : -1;
case 2:
case GL_LUMINANCE_ALPHA:
case GL_LUMINANCE4_ALPHA4:
case GL_LUMINANCE6_ALPHA2:
case GL_LUMINANCE8_ALPHA8:
case GL_LUMINANCE12_ALPHA4:
case GL_LUMINANCE12_ALPHA12:
case GL_LUMINANCE16_ALPHA16:
return (ctx->API != API_OPENGL_CORE) ? GL_LUMINANCE_ALPHA : -1;
case GL_INTENSITY:
case GL_INTENSITY4:
case GL_INTENSITY8:
case GL_INTENSITY12:
case GL_INTENSITY16:
return (ctx->API != API_OPENGL_CORE) ? GL_INTENSITY : -1;
case 3:
return (ctx->API != API_OPENGL_CORE) ? GL_RGB : -1;
case GL_RGB:
case GL_R3_G3_B2:
case GL_RGB4:
case GL_RGB5:
case GL_RGB8:
case GL_RGB10:
case GL_RGB12:
case GL_RGB16:
return GL_RGB;
case 4:
return (ctx->API != API_OPENGL_CORE) ? GL_RGBA : -1;
case GL_RGBA:
case GL_RGBA2:
case GL_RGBA4:
case GL_RGB5_A1:
case GL_RGBA8:
case GL_RGB10_A2:
case GL_RGBA12:
case GL_RGBA16:
return GL_RGBA;
default:
; /* fallthrough */
}
/* GL_BGRA can be an internal format *only* in OpenGL ES (1.x or 2.0).
*/
if (_mesa_is_gles(ctx)) {
switch (internalFormat) {
case GL_BGRA:
return GL_RGBA;
default:
; /* fallthrough */
}
}
if (ctx->Extensions.ARB_ES2_compatibility) {
switch (internalFormat) {
case GL_RGB565:
return GL_RGB;
default:
; /* fallthrough */
}
}
if (ctx->Extensions.ARB_depth_texture) {
switch (internalFormat) {
case GL_DEPTH_COMPONENT:
case GL_DEPTH_COMPONENT16:
case GL_DEPTH_COMPONENT24:
case GL_DEPTH_COMPONENT32:
return GL_DEPTH_COMPONENT;
default:
; /* fallthrough */
}
}
switch (internalFormat) {
case GL_COMPRESSED_ALPHA:
return GL_ALPHA;
case GL_COMPRESSED_LUMINANCE:
return GL_LUMINANCE;
case GL_COMPRESSED_LUMINANCE_ALPHA:
return GL_LUMINANCE_ALPHA;
case GL_COMPRESSED_INTENSITY:
return GL_INTENSITY;
case GL_COMPRESSED_RGB:
return GL_RGB;
case GL_COMPRESSED_RGBA:
return GL_RGBA;
default:
; /* fallthrough */
}
if (ctx->Extensions.TDFX_texture_compression_FXT1) {
switch (internalFormat) {
case GL_COMPRESSED_RGB_FXT1_3DFX:
return GL_RGB;
case GL_COMPRESSED_RGBA_FXT1_3DFX:
return GL_RGBA;
default:
; /* fallthrough */
}
}
if (ctx->Extensions.EXT_texture_compression_s3tc) {
switch (internalFormat) {
case GL_COMPRESSED_RGB_S3TC_DXT1_EXT:
return GL_RGB;
case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT:
case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT:
case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT:
return GL_RGBA;
default:
; /* fallthrough */
}
}
if (ctx->Extensions.S3_s3tc) {
switch (internalFormat) {
case GL_RGB_S3TC:
case GL_RGB4_S3TC:
return GL_RGB;
case GL_RGBA_S3TC:
case GL_RGBA4_S3TC:
return GL_RGBA;
default:
; /* fallthrough */
}
}
if (ctx->Extensions.MESA_ycbcr_texture) {
if (internalFormat == GL_YCBCR_MESA)
return GL_YCBCR_MESA;
}
if (ctx->Extensions.ARB_texture_float) {
switch (internalFormat) {
case GL_ALPHA16F_ARB:
case GL_ALPHA32F_ARB:
return GL_ALPHA;
case GL_RGBA16F_ARB:
case GL_RGBA32F_ARB:
return GL_RGBA;
case GL_RGB16F_ARB:
case GL_RGB32F_ARB:
return GL_RGB;
case GL_INTENSITY16F_ARB:
case GL_INTENSITY32F_ARB:
return GL_INTENSITY;
case GL_LUMINANCE16F_ARB:
case GL_LUMINANCE32F_ARB:
return GL_LUMINANCE;
case GL_LUMINANCE_ALPHA16F_ARB:
case GL_LUMINANCE_ALPHA32F_ARB:
return GL_LUMINANCE_ALPHA;
default:
; /* fallthrough */
}
}
if (ctx->Extensions.ATI_envmap_bumpmap) {
switch (internalFormat) {
case GL_DUDV_ATI:
case GL_DU8DV8_ATI:
return GL_DUDV_ATI;
default:
; /* fallthrough */
}
}
if (ctx->Extensions.EXT_texture_snorm) {
switch (internalFormat) {
case GL_RED_SNORM:
case GL_R8_SNORM:
case GL_R16_SNORM:
return GL_RED;
case GL_RG_SNORM:
case GL_RG8_SNORM:
case GL_RG16_SNORM:
return GL_RG;
case GL_RGB_SNORM:
case GL_RGB8_SNORM:
case GL_RGB16_SNORM:
return GL_RGB;
case GL_RGBA_SNORM:
case GL_RGBA8_SNORM:
case GL_RGBA16_SNORM:
return GL_RGBA;
case GL_ALPHA_SNORM:
case GL_ALPHA8_SNORM:
case GL_ALPHA16_SNORM:
return GL_ALPHA;
case GL_LUMINANCE_SNORM:
case GL_LUMINANCE8_SNORM:
case GL_LUMINANCE16_SNORM:
return GL_LUMINANCE;
case GL_LUMINANCE_ALPHA_SNORM:
case GL_LUMINANCE8_ALPHA8_SNORM:
case GL_LUMINANCE16_ALPHA16_SNORM:
return GL_LUMINANCE_ALPHA;
case GL_INTENSITY_SNORM:
case GL_INTENSITY8_SNORM:
case GL_INTENSITY16_SNORM:
return GL_INTENSITY;
default:
; /* fallthrough */
}
}
if (ctx->Extensions.EXT_packed_depth_stencil) {
switch (internalFormat) {
case GL_DEPTH_STENCIL_EXT:
case GL_DEPTH24_STENCIL8_EXT:
return GL_DEPTH_STENCIL_EXT;
default:
; /* fallthrough */
}
}
#if FEATURE_EXT_texture_sRGB
if (ctx->Extensions.EXT_texture_sRGB) {
switch (internalFormat) {
case GL_SRGB_EXT:
case GL_SRGB8_EXT:
case GL_COMPRESSED_SRGB_EXT:
case GL_COMPRESSED_SRGB_S3TC_DXT1_EXT:
return GL_RGB;
case GL_SRGB_ALPHA_EXT:
case GL_SRGB8_ALPHA8_EXT:
case GL_COMPRESSED_SRGB_ALPHA_EXT:
case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT:
case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT:
case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT:
return GL_RGBA;
case GL_SLUMINANCE_ALPHA_EXT:
case GL_SLUMINANCE8_ALPHA8_EXT:
case GL_COMPRESSED_SLUMINANCE_ALPHA_EXT:
return GL_LUMINANCE_ALPHA;
case GL_SLUMINANCE_EXT:
case GL_SLUMINANCE8_EXT:
case GL_COMPRESSED_SLUMINANCE_EXT:
return GL_LUMINANCE;
default:
; /* fallthrough */
}
}
#endif /* FEATURE_EXT_texture_sRGB */
if (ctx->Version >= 30 ||
ctx->Extensions.EXT_texture_integer) {
switch (internalFormat) {
case GL_RGBA8UI_EXT:
case GL_RGBA16UI_EXT:
case GL_RGBA32UI_EXT:
case GL_RGBA8I_EXT:
case GL_RGBA16I_EXT:
case GL_RGBA32I_EXT:
case GL_RGB10_A2UI:
return GL_RGBA;
case GL_RGB8UI_EXT:
case GL_RGB16UI_EXT:
case GL_RGB32UI_EXT:
case GL_RGB8I_EXT:
case GL_RGB16I_EXT:
case GL_RGB32I_EXT:
return GL_RGB;
}
}
if (ctx->Extensions.EXT_texture_integer) {
switch (internalFormat) {
case GL_ALPHA8UI_EXT:
case GL_ALPHA16UI_EXT:
case GL_ALPHA32UI_EXT:
case GL_ALPHA8I_EXT:
case GL_ALPHA16I_EXT:
case GL_ALPHA32I_EXT:
return GL_ALPHA;
case GL_INTENSITY8UI_EXT:
case GL_INTENSITY16UI_EXT:
case GL_INTENSITY32UI_EXT:
case GL_INTENSITY8I_EXT:
case GL_INTENSITY16I_EXT:
case GL_INTENSITY32I_EXT:
return GL_INTENSITY;
case GL_LUMINANCE8UI_EXT:
case GL_LUMINANCE16UI_EXT:
case GL_LUMINANCE32UI_EXT:
case GL_LUMINANCE8I_EXT:
case GL_LUMINANCE16I_EXT:
case GL_LUMINANCE32I_EXT:
return GL_LUMINANCE;
case GL_LUMINANCE_ALPHA8UI_EXT:
case GL_LUMINANCE_ALPHA16UI_EXT:
case GL_LUMINANCE_ALPHA32UI_EXT:
case GL_LUMINANCE_ALPHA8I_EXT:
case GL_LUMINANCE_ALPHA16I_EXT:
case GL_LUMINANCE_ALPHA32I_EXT:
return GL_LUMINANCE_ALPHA;
default:
; /* fallthrough */
}
}
if (ctx->Extensions.ARB_texture_rg) {
switch (internalFormat) {
case GL_R16F:
/* R16F depends on both ARB_half_float_pixel and ARB_texture_float.
*/
if (!ctx->Extensions.ARB_half_float_pixel)
break;
/* FALLTHROUGH */
case GL_R32F:
if (!ctx->Extensions.ARB_texture_float)
break;
return GL_RED;
case GL_R8I:
case GL_R8UI:
case GL_R16I:
case GL_R16UI:
case GL_R32I:
case GL_R32UI:
if (ctx->Version < 30 && !ctx->Extensions.EXT_texture_integer)
break;
/* FALLTHROUGH */
case GL_R8:
case GL_R16:
case GL_RED:
case GL_COMPRESSED_RED:
return GL_RED;
case GL_RG16F:
/* RG16F depends on both ARB_half_float_pixel and ARB_texture_float.
*/
if (!ctx->Extensions.ARB_half_float_pixel)
break;
/* FALLTHROUGH */
case GL_RG32F:
if (!ctx->Extensions.ARB_texture_float)
break;
return GL_RG;
case GL_RG8I:
case GL_RG8UI:
case GL_RG16I:
case GL_RG16UI:
case GL_RG32I:
case GL_RG32UI:
if (ctx->Version < 30 && !ctx->Extensions.EXT_texture_integer)
break;
/* FALLTHROUGH */
case GL_RG:
case GL_RG8:
case GL_RG16:
case GL_COMPRESSED_RG:
return GL_RG;
default:
; /* fallthrough */
}
}
if (ctx->Extensions.EXT_texture_shared_exponent) {
switch (internalFormat) {
case GL_RGB9_E5_EXT:
return GL_RGB;
default:
; /* fallthrough */
}
}
if (ctx->Extensions.EXT_packed_float) {
switch (internalFormat) {
case GL_R11F_G11F_B10F_EXT:
return GL_RGB;
default:
; /* fallthrough */
}
}
if (ctx->Extensions.ARB_depth_buffer_float) {
switch (internalFormat) {
case GL_DEPTH_COMPONENT32F:
return GL_DEPTH_COMPONENT;
case GL_DEPTH32F_STENCIL8:
return GL_DEPTH_STENCIL;
default:
; /* fallthrough */
}
}
if (ctx->Extensions.ARB_texture_compression_rgtc) {
switch (internalFormat) {
case GL_COMPRESSED_RED_RGTC1:
case GL_COMPRESSED_SIGNED_RED_RGTC1:
return GL_RED;
case GL_COMPRESSED_RG_RGTC2:
case GL_COMPRESSED_SIGNED_RG_RGTC2:
return GL_RG;
default:
; /* fallthrough */
}
}
if (ctx->Extensions.EXT_texture_compression_latc) {
switch (internalFormat) {
case GL_COMPRESSED_LUMINANCE_LATC1_EXT:
case GL_COMPRESSED_SIGNED_LUMINANCE_LATC1_EXT:
return GL_LUMINANCE;
case GL_COMPRESSED_LUMINANCE_ALPHA_LATC2_EXT:
case GL_COMPRESSED_SIGNED_LUMINANCE_ALPHA_LATC2_EXT:
return GL_LUMINANCE_ALPHA;
default:
; /* fallthrough */
}
}
if (ctx->Extensions.ATI_texture_compression_3dc) {
switch (internalFormat) {
case GL_COMPRESSED_LUMINANCE_ALPHA_3DC_ATI:
return GL_LUMINANCE_ALPHA;
default:
; /* fallthrough */
}
}
if (ctx->Extensions.OES_compressed_ETC1_RGB8_texture) {
switch (internalFormat) {
case GL_ETC1_RGB8_OES:
return GL_RGB;
default:
; /* fallthrough */
}
}
if (ctx->API == API_OPENGLES) {
switch (internalFormat) {
case GL_PALETTE4_RGB8_OES:
case GL_PALETTE4_R5_G6_B5_OES:
case GL_PALETTE8_RGB8_OES:
case GL_PALETTE8_R5_G6_B5_OES:
return GL_RGB;
case GL_PALETTE4_RGBA8_OES:
case GL_PALETTE8_RGB5_A1_OES:
case GL_PALETTE4_RGBA4_OES:
case GL_PALETTE4_RGB5_A1_OES:
case GL_PALETTE8_RGBA8_OES:
case GL_PALETTE8_RGBA4_OES:
return GL_RGBA;
default:
; /* fallthrough */
}
}
return -1; /* error */
}
/**
* For cube map faces, return a face index in [0,5].
* For other targets return 0;
*/
GLuint
_mesa_tex_target_to_face(GLenum target)
{
if (_mesa_is_cube_face(target))
return (GLuint) target - (GLuint) GL_TEXTURE_CUBE_MAP_POSITIVE_X;
else
return 0;
}
/**
* 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)
{
/*
* NUM_TEXTURE_TARGETS should match number of terms below, except there's no
* proxy for GL_TEXTURE_BUFFER and GL_TEXTURE_EXTERNAL_OES.
*/
assert(NUM_TEXTURE_TARGETS == 7 + 2);
return (target == GL_PROXY_TEXTURE_1D ||
target == GL_PROXY_TEXTURE_2D ||
target == GL_PROXY_TEXTURE_3D ||
target == GL_PROXY_TEXTURE_CUBE_MAP_ARB ||
target == GL_PROXY_TEXTURE_RECTANGLE_NV ||
target == GL_PROXY_TEXTURE_1D_ARRAY_EXT ||
target == GL_PROXY_TEXTURE_2D_ARRAY_EXT);
}
/**
* Return the proxy target which corresponds to the given texture target
*/
GLenum
_mesa_get_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_ARB:
case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB:
case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB:
case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB:
case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB:
case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB:
case GL_TEXTURE_CUBE_MAP_ARB:
case GL_PROXY_TEXTURE_CUBE_MAP_ARB:
return GL_PROXY_TEXTURE_CUBE_MAP_ARB;
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;
default:
_mesa_problem(NULL, "unexpected target in _mesa_get_proxy_target()");
return 0;
}
}
/**
* Get the texture object that corresponds to the target of the given
* texture unit. The target should have already been checked for validity.
*
* \param ctx GL context.
* \param texUnit texture unit.
* \param target texture target.
*
* \return pointer to the texture object on success, or NULL on failure.
*/
struct gl_texture_object *
_mesa_select_tex_object(struct gl_context *ctx,
const struct gl_texture_unit *texUnit,
GLenum target)
{
const GLboolean arrayTex = (ctx->Extensions.MESA_texture_array ||
ctx->Extensions.EXT_texture_array);
switch (target) {
case GL_TEXTURE_1D:
return texUnit->CurrentTex[TEXTURE_1D_INDEX];
case GL_PROXY_TEXTURE_1D:
return ctx->Texture.ProxyTex[TEXTURE_1D_INDEX];
case GL_TEXTURE_2D:
return texUnit->CurrentTex[TEXTURE_2D_INDEX];
case GL_PROXY_TEXTURE_2D:
return ctx->Texture.ProxyTex[TEXTURE_2D_INDEX];
case GL_TEXTURE_3D:
return texUnit->CurrentTex[TEXTURE_3D_INDEX];
case GL_PROXY_TEXTURE_3D:
return ctx->Texture.ProxyTex[TEXTURE_3D_INDEX];
case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB:
case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB:
case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB:
case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB:
case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB:
case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB:
case GL_TEXTURE_CUBE_MAP_ARB:
return ctx->Extensions.ARB_texture_cube_map
? texUnit->CurrentTex[TEXTURE_CUBE_INDEX] : NULL;
case GL_PROXY_TEXTURE_CUBE_MAP_ARB:
return ctx->Extensions.ARB_texture_cube_map
? ctx->Texture.ProxyTex[TEXTURE_CUBE_INDEX] : NULL;
case GL_TEXTURE_RECTANGLE_NV:
return ctx->Extensions.NV_texture_rectangle
? texUnit->CurrentTex[TEXTURE_RECT_INDEX] : NULL;
case GL_PROXY_TEXTURE_RECTANGLE_NV:
return ctx->Extensions.NV_texture_rectangle
? ctx->Texture.ProxyTex[TEXTURE_RECT_INDEX] : NULL;
case GL_TEXTURE_1D_ARRAY_EXT:
return arrayTex ? texUnit->CurrentTex[TEXTURE_1D_ARRAY_INDEX] : NULL;
case GL_PROXY_TEXTURE_1D_ARRAY_EXT:
return arrayTex ? ctx->Texture.ProxyTex[TEXTURE_1D_ARRAY_INDEX] : NULL;
case GL_TEXTURE_2D_ARRAY_EXT:
return arrayTex ? texUnit->CurrentTex[TEXTURE_2D_ARRAY_INDEX] : NULL;
case GL_PROXY_TEXTURE_2D_ARRAY_EXT:
return arrayTex ? ctx->Texture.ProxyTex[TEXTURE_2D_ARRAY_INDEX] : NULL;
case GL_TEXTURE_BUFFER:
return _mesa_is_desktop_gl(ctx)
&& ctx->Extensions.ARB_texture_buffer_object
? texUnit->CurrentTex[TEXTURE_BUFFER_INDEX] : NULL;
case GL_TEXTURE_EXTERNAL_OES:
return ctx->Extensions.OES_EGL_image_external
? texUnit->CurrentTex[TEXTURE_EXTERNAL_INDEX] : NULL;
default:
_mesa_problem(NULL, "bad target in _mesa_select_tex_object()");
return NULL;
}
}
/**
* Return pointer to texture object for given target on current texture unit.
*/
struct gl_texture_object *
_mesa_get_current_tex_object(struct gl_context *ctx, GLenum target)
{
struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx);
return _mesa_select_tex_object(ctx, texUnit, target);
}
/**
* 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 ctx GL context.
* \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(struct gl_context *ctx,
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(ctx, 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;
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_ARB:
case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB:
case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB:
case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB:
case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB:
case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB:
case GL_PROXY_TEXTURE_CUBE_MAP_ARB:
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.MESA_texture_array ||
ctx->Extensions.EXT_texture_array)
? ctx->Const.MaxTextureLevels : 0;
case GL_TEXTURE_BUFFER:
return _mesa_is_desktop_gl(ctx)
&& ctx->Extensions.ARB_texture_buffer_object
? 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:
return 2;
case GL_TEXTURE_3D:
case GL_PROXY_TEXTURE_3D:
case GL_TEXTURE_2D_ARRAY:
case GL_PROXY_TEXTURE_2D_ARRAY:
return 3;
case GL_TEXTURE_BUFFER:
/* fall-through */
default:
_mesa_problem(NULL, "invalid target 0x%x in get_texture_dimensions()",
target);
return 2;
}
}
/**
* 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:
size = width;
break;
case GL_TEXTURE_CUBE_MAP:
case GL_TEXTURE_CUBE_MAP_ARRAY:
ASSERT(width == height);
size = width;
break;
case GL_TEXTURE_2D:
case GL_TEXTURE_2D_ARRAY:
size = MAX2(width, height);
break;
case GL_TEXTURE_3D:
size = MAX3(width, height, depth);
break;
case GL_TEXTURE_RECTANGLE:
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;
}
/**
* 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_*)
*
* Fills in the fields of \p img with the given information.
* Note: width, height and depth include the border.
*/
void
_mesa_init_teximage_fields(struct gl_context *ctx,
struct gl_texture_image *img,
GLsizei width, GLsizei height, GLsizei depth,
GLint border, GLenum internalFormat,
gl_format format)
{
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 > 0);
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);
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:
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:
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;
}
/**
* 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);
}
/**
* This is the fallback for Driver.TestProxyTexImage(). Test the texture
* level, width, height and depth against the ctx->Const limits for textures.
*
* 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 one of GL_PROXY_TEXTURE_1D, GL_PROXY_TEXTURE_2D,
* GL_PROXY_TEXTURE_3D, GL_PROXY_TEXTURE_RECTANGLE_NV,
* GL_PROXY_TEXTURE_CUBE_MAP_ARB.
* \param level as passed to glTexImage
* \param internalFormat as passed to glTexImage
* \param format as passed to glTexImage
* \param type as passed to glTexImage
* \param width as passed to glTexImage
* \param height as passed to glTexImage
* \param depth as passed to glTexImage
* \param border 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, GLint level,
GLint internalFormat, GLenum format, GLenum type,
GLint width, GLint height, GLint depth, GLint border)
{
GLint maxSize;
(void) internalFormat;
(void) format;
(void) type;
switch (target) {
case GL_PROXY_TEXTURE_1D:
if (level >= ctx->Const.MaxTextureLevels)
return GL_FALSE;
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_PROXY_TEXTURE_2D:
if (level >= ctx->Const.MaxTextureLevels)
return GL_FALSE;
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_PROXY_TEXTURE_3D:
if (level >= ctx->Const.Max3DTextureLevels)
return GL_FALSE;
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_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_PROXY_TEXTURE_CUBE_MAP_ARB:
if (level >= ctx->Const.MaxCubeTextureLevels)
return GL_FALSE;
maxSize = 1 << (ctx->Const.MaxCubeTextureLevels - 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_PROXY_TEXTURE_1D_ARRAY_EXT:
if (level >= ctx->Const.MaxTextureLevels)
return GL_FALSE;
maxSize = 1 << (ctx->Const.MaxTextureLevels - 1);
maxSize >>= level;
if (width < 2 * border || width > 2 * border + maxSize)
return GL_FALSE;
if (height < 1 || 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_PROXY_TEXTURE_2D_ARRAY_EXT:
if (level >= ctx->Const.MaxTextureLevels)
return GL_FALSE;
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 < 1 || 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;
default:
_mesa_problem(ctx, "Invalid target in _mesa_test_proxy_teximage");
return GL_FALSE;
}
}
/**
* Check if the memory used by the texture would exceed the driver's limit.
* This lets us support a max 3D texture size of 8K (for example) but
* prevents allocating a full 8K x 8K x 8K texture.
* XXX this could be rolled into the proxy texture size test (above) but
* we don't have the actual texture internal format at that point.
*/
static GLboolean
legal_texture_size(struct gl_context *ctx, gl_format format,
GLint width, GLint height, GLint depth)
{
uint64_t bytes = _mesa_format_image_size64(format, width, height, depth);
uint64_t mbytes = bytes / (1024 * 1024); /* convert to MB */
return mbytes <= (uint64_t) ctx->Const.MaxTextureMbytes;
}
/**
* Return true if the format is only valid for glCompressedTexImage.
*/
static GLboolean
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 GL_TRUE;
default:
return GL_FALSE;
}
}
/**
* Helper function to determine whether a target and specific compression
* format are supported.
*/
static GLboolean
target_can_be_compressed(const struct gl_context *ctx, GLenum target,
GLenum intFormat)
{
(void) intFormat; /* not used yet */
switch (target) {
case GL_TEXTURE_2D:
case GL_PROXY_TEXTURE_2D:
return GL_TRUE; /* true for any compressed format so far */
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:
return ctx->Extensions.ARB_texture_cube_map;
case GL_PROXY_TEXTURE_2D_ARRAY_EXT:
case GL_TEXTURE_2D_ARRAY_EXT:
return (ctx->Extensions.MESA_texture_array ||
ctx->Extensions.EXT_texture_array);
default:
return GL_FALSE;
}
}
/**
* 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.MESA_texture_array ||
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.MESA_texture_array ||
ctx->Extensions.EXT_texture_array))
|| _mesa_is_gles3(ctx);
case GL_PROXY_TEXTURE_2D_ARRAY_EXT:
return _mesa_is_desktop_gl(ctx)
&& (ctx->Extensions.MESA_texture_array ||
ctx->Extensions.EXT_texture_array);
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)
{
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.MESA_texture_array ||
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.MESA_texture_array ||
ctx->Extensions.EXT_texture_array))
|| _mesa_is_gles3(ctx);
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)
{
if (ctx->Extensions.ARB_texture_storage) {
struct gl_texture_object *texObj =
_mesa_get_current_tex_object(ctx, target);
return !texObj->Immutable;
}
return GL_TRUE;
}
GLenum
_mesa_es_error_check_format_and_type(GLenum format, GLenum type,
unsigned dimensions)
{
bool type_valid = true;
switch (format) {
case GL_ALPHA:
case GL_LUMINANCE:
case GL_LUMINANCE_ALPHA:
type_valid = (type == GL_UNSIGNED_BYTE
|| type == GL_FLOAT
|| type == GL_HALF_FLOAT_OES);
break;
case GL_RGB:
type_valid = (type == GL_UNSIGNED_BYTE
|| type == GL_UNSIGNED_SHORT_5_6_5
|| type == GL_FLOAT
|| type == GL_HALF_FLOAT_OES);
break;
case GL_RGBA:
type_valid = (type == GL_UNSIGNED_BYTE
|| type == GL_UNSIGNED_SHORT_4_4_4_4
|| type == GL_UNSIGNED_SHORT_5_5_5_1
|| type == GL_FLOAT
|| type == GL_HALF_FLOAT_OES
|| type == GL_UNSIGNED_INT_2_10_10_10_REV);
break;
case GL_DEPTH_COMPONENT:
/* This format is filtered against invalid dimensionalities elsewhere.
*/
type_valid = (type == GL_UNSIGNED_SHORT
|| type == GL_UNSIGNED_INT);
break;
case GL_DEPTH_STENCIL:
/* This format is filtered against invalid dimensionalities elsewhere.
*/
type_valid = (type == GL_UNSIGNED_INT_24_8);
break;
case GL_BGRA_EXT:
type_valid = (type == GL_UNSIGNED_BYTE);
/* This feels like a bug in the EXT_texture_format_BGRA8888 spec, but
* the format does not appear to be allowed for 3D textures in OpenGL
* ES.
*/
if (dimensions != 2)
return GL_INVALID_VALUE;
break;
default:
return GL_INVALID_VALUE;
}
return type_valid ? GL_NO_ERROR : GL_INVALID_OPERATION;
}
/**
* Return expected size of a compressed texture.
*/
static GLuint
compressed_tex_size(GLsizei width, GLsizei height, GLsizei depth,
GLenum glformat)
{
gl_format mesaFormat = _mesa_glenum_to_compressed_format(glformat);
return _mesa_format_image_size(mesaFormat, width, height, depth);
}
/*
* Return compressed texture block size, in pixels.
*/
static void
get_compressed_block_size(GLenum glformat, GLuint *bw, GLuint *bh)
{
gl_format mesaFormat = _mesa_glenum_to_compressed_format(glformat);
_mesa_get_format_block_size(mesaFormat, bw, bh);
}
/**
* Special value returned by error some texture error checking functions when
* an error is detected and the proxy texture image's width/height/depth/format
* fields should be zeroed-out.
*/
#define PROXY_ERROR 2
/**
* 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.
* \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 PROXY_ERROR if there's an error that should zero-out the proxy image,
* GL_TRUE if a regular GL error is found, or GL_FALSE if no error,
*
* 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 GLenum
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 GLenum proxyTarget = _mesa_get_proxy_target(target);
const GLboolean isProxy = target == proxyTarget;
GLboolean sizeOK = GL_TRUE;
GLboolean colorFormat;
GLenum err;
/* 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);
/* 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.
*/
/* Basic level check (more checking in ctx->Driver.TestProxyTexImage) */
if (level < 0 || level >= MAX_TEXTURE_LEVELS) {
_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 ||
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;
}
/* 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) && !_mesa_is_gles3(ctx)) {
if (format != internalFormat) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glTexImage%dD(format = %s, internalFormat = %s)",
dimensions,
_mesa_lookup_enum_by_nr(format),
_mesa_lookup_enum_by_nr(internalFormat));
return GL_TRUE;
}
err = _mesa_es_error_check_format_and_type(format, type, dimensions);
if (err != GL_NO_ERROR) {
_mesa_error(ctx, err,
"glTexImage%dD(format = %s, type = %s)",
dimensions,
_mesa_lookup_enum_by_nr(format),
_mesa_lookup_enum_by_nr(type));
return GL_TRUE;
}
}
/* Do this simple check before calling the TestProxyTexImage() function */
if (proxyTarget == GL_PROXY_TEXTURE_CUBE_MAP_ARB) {
sizeOK = (width == height);
}
/*
* Use the proxy texture driver hook to see if the size/level/etc are
* legal.
*/
sizeOK = sizeOK && ctx->Driver.TestProxyTexImage(ctx, proxyTarget, level,
internalFormat, format,
type, width, height,
depth, border);
if (!sizeOK) {
if (isProxy) {
/* No GL error is recorded, but we need to zero-out the image dims */
return PROXY_ERROR;
}
else {
_mesa_error(ctx, GL_INVALID_VALUE,
"glTexImage%dD(level=%d, width=%d, height=%d, depth=%d)",
dimensions, level, width, height, depth);
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_lookup_enum_by_nr(internalFormat));
return GL_TRUE;
}
/* Check incoming image format and type */
err = _mesa_error_check_format_and_type(ctx, format, type);
if (err != GL_NO_ERROR) {
_mesa_error(ctx, err,
"glTexImage%dD(incompatible format 0x%x, type 0x%x)",
dimensions, format, type);
return GL_TRUE;
}
/* make sure internal format and format basically agree */
colorFormat = _mesa_is_color_format(format);
if ((_mesa_is_color_format(internalFormat) && !colorFormat && !indexFormat) ||
(_mesa_is_depth_format(internalFormat) != _mesa_is_depth_format(format)) ||
(_mesa_is_ycbcr_format(internalFormat) != _mesa_is_ycbcr_format(format)) ||
(_mesa_is_depthstencil_format(internalFormat) != _mesa_is_depthstencil_format(format)) ||
(_mesa_is_dudv_format(internalFormat) != _mesa_is_dudv_format(format))) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glTexImage%dD(incompatible internalFormat 0x%x, format 0x%x)",
dimensions, internalFormat, 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_base_tex_format(ctx, internalFormat) == GL_DEPTH_COMPONENT) {
/* Only 1D, 2D, rect, array and cube textures supported, not 3D
* Cubemaps are only supported for GL version > 3.0 or with EXT_gpu_shader4 */
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_PROXY_TEXTURE_CUBE_MAP) &&
(ctx->Version >= 30 || ctx->Extensions.EXT_gpu_shader4))) {
_mesa_error(ctx, GL_INVALID_ENUM,
"glTexImage%dD(bad target for depth texture)",
dimensions);
return GL_TRUE;
}
}
/* additional checks for compressed textures */
if (_mesa_is_compressed_format(ctx, internalFormat)) {
if (!target_can_be_compressed(ctx, target, internalFormat)) {
_mesa_error(ctx, GL_INVALID_ENUM,
"glTexImage%dD(target can't be compressed)", dimensions);
return GL_TRUE;
}
if (compressedteximage_only_format(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().
* \param reason returns reason for error, if any
* \return error code or GL_NO_ERROR or PROXY_ERROR.
*/
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 GLenum proxyTarget = _mesa_get_proxy_target(target);
const GLint maxLevels = _mesa_max_texture_levels(ctx, target);
GLint expectedSize;
GLenum choose_format;
GLenum choose_type;
GLenum proxy_format;
GLenum error = GL_NO_ERROR;
char *reason = ""; /* no error */
if (!target_can_be_compressed(ctx, target, internalFormat)) {
reason = "target";
error = GL_INVALID_ENUM;
goto error;
}
/* This will detect any invalid internalFormat value */
if (!_mesa_is_compressed_format(ctx, internalFormat)) {
reason = "internalFormat";
error = GL_INVALID_ENUM;
goto error;
}
switch (internalFormat) {
#if FEATURE_ES
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_format_type(internalFormat, &choose_format,
&choose_type);
proxy_format = choose_format;
/* 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;
#endif
default:
choose_format = GL_NONE;
choose_type = GL_NONE;
proxy_format = internalFormat;
/* 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;
}
/* For cube map, width must equal height */
if (_mesa_is_cube_face(target) && width != height) {
reason = "width != height";
error = GL_INVALID_VALUE;
goto error;
}
/* check image sizes */
if (!ctx->Driver.TestProxyTexImage(ctx, proxyTarget, level,
proxy_format, choose_format,
choose_type,
width, height, depth, border)) {
/* See error comment above */
if (target == proxyTarget) {
return PROXY_ERROR;
}
reason = "invalid width, height or format";
error = GL_INVALID_OPERATION;
goto error;
}
/* 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 inconsistant 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_NO_ERROR;
error:
_mesa_error(ctx, error, "glCompressedTexImage%dD(%s)", dimensions, reason);
return error;
}
/**
* 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.
* \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
subtexture_error_check( struct gl_context *ctx, GLuint dimensions,
GLenum target, GLint level,
GLint xoffset, GLint yoffset, GLint zoffset,
GLint width, GLint height, GLint depth,
GLenum format, GLenum type )
{
GLenum err;
/* Basic level check */
if (level < 0 || level >= MAX_TEXTURE_LEVELS) {
_mesa_error(ctx, GL_INVALID_ENUM, "glTexSubImage2D(level=%d)", level);
return GL_TRUE;
}
/* Check for negative sizes */
if (width < 0) {
_mesa_error(ctx, GL_INVALID_VALUE,
"glTexSubImage%dD(width=%d)", dimensions, width);
return GL_TRUE;
}
if (height < 0 && dimensions > 1) {
_mesa_error(ctx, GL_INVALID_VALUE,
"glTexSubImage%dD(height=%d)", dimensions, height);
return GL_TRUE;
}
if (depth < 0 && dimensions > 2) {
_mesa_error(ctx, GL_INVALID_VALUE,
"glTexSubImage%dD(depth=%d)", dimensions, depth);
return GL_TRUE;
}
/* OpenGL ES 1.x and OpenGL ES 2.0 impose additional restrictions on the
* combinations of format 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) && !_mesa_is_gles3(ctx)) {
err = _mesa_es_error_check_format_and_type(format, type, dimensions);
if (err != GL_NO_ERROR) {
_mesa_error(ctx, err,
"glTexSubImage%dD(format = %s, type = %s)",
dimensions,
_mesa_lookup_enum_by_nr(format),
_mesa_lookup_enum_by_nr(type));
return GL_TRUE;
}
}
err = _mesa_error_check_format_and_type(ctx, format, type);
if (err != GL_NO_ERROR) {
_mesa_error(ctx, err,
"glTexSubImage%dD(incompatible format 0x%x, type 0x%x)",
dimensions, format, type);
return GL_TRUE;
}
return GL_FALSE;
}
/**
* Do second part of glTexSubImage which depends on the destination texture.
* \return GL_TRUE if error recorded, GL_FALSE otherwise
*/
static GLboolean
subtexture_error_check2( struct gl_context *ctx, GLuint dimensions,
GLenum target, GLint level,
GLint xoffset, GLint yoffset, GLint zoffset,
GLint width, GLint height, GLint depth,
GLenum format, GLenum type,
const struct gl_texture_image *destTex )
{
if (!destTex) {
/* undefined image level */
_mesa_error(ctx, GL_INVALID_OPERATION, "glTexSubImage%dD", dimensions);
return GL_TRUE;
}
if (xoffset < -((GLint)destTex->Border)) {
_mesa_error(ctx, GL_INVALID_VALUE, "glTexSubImage%dD(xoffset)",
dimensions);
return GL_TRUE;
}
if (xoffset + width > (GLint) (destTex->Width + destTex->Border)) {
_mesa_error(ctx, GL_INVALID_VALUE, "glTexSubImage%dD(xoffset+width)",
dimensions);
return GL_TRUE;
}
if (dimensions > 1) {
GLint yBorder = (target == GL_TEXTURE_1D_ARRAY) ? 0 : destTex->Border;
if (yoffset < -yBorder) {
_mesa_error(ctx, GL_INVALID_VALUE, "glTexSubImage%dD(yoffset)",
dimensions);
return GL_TRUE;
}
if (yoffset + height > (GLint) destTex->Height + yBorder) {
_mesa_error(ctx, GL_INVALID_VALUE, "glTexSubImage%dD(yoffset+height)",
dimensions);
return GL_TRUE;
}
}
if (dimensions > 2) {
GLint zBorder = (target == GL_TEXTURE_2D_ARRAY) ? 0 : destTex->Border;
if (zoffset < -zBorder) {
_mesa_error(ctx, GL_INVALID_VALUE, "glTexSubImage3D(zoffset)");
return GL_TRUE;
}
if (zoffset + depth > (GLint) destTex->Depth + zBorder) {
_mesa_error(ctx, GL_INVALID_VALUE, "glTexSubImage3D(zoffset+depth)");
return GL_TRUE;
}
}
if (_mesa_is_format_compressed(destTex->TexFormat)) {
GLuint bw, bh;
if (compressedteximage_only_format(ctx, destTex->InternalFormat)) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glTexSubImage%dD(no compression for format)", dimensions);
return GL_TRUE;
}
/* do tests which depend on compression block size */
_mesa_get_format_block_size(destTex->TexFormat, &bw, &bh);
/* offset must be multiple of block size */
if ((xoffset % bw != 0) || (yoffset % bh != 0)) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glTexSubImage%dD(xoffset = %d, yoffset = %d)",
dimensions, xoffset, yoffset);
return GL_TRUE;
}
/* size must be multiple of bw by bh or equal to whole texture size */
if ((width % bw != 0) && (GLuint) width != destTex->Width) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glTexSubImage%dD(width = %d)", dimensions, width);
return GL_TRUE;
}
if ((height % bh != 0) && (GLuint) height != destTex->Height) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glTexSubImage%dD(height = %d)", dimensions, height);
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(destTex->TexFormat) !=
_mesa_is_enum_format_integer(format)) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glTexSubImage%dD(integer/non-integer format mismatch)",
dimensions);
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 )
{
const GLenum proxyTarget = _mesa_get_proxy_target(target);
const GLenum type = GL_FLOAT;
GLboolean sizeOK;
GLint baseFormat;
/* check target */
if (!legal_texsubimage_target(ctx, dimensions, target)) {
_mesa_error(ctx, GL_INVALID_ENUM, "glCopyTexImage%uD(target=%s)",
dimensions, _mesa_lookup_enum_by_nr(target));
return GL_TRUE;
}
/* Basic level check (more checking in ctx->Driver.TestProxyTexImage) */
if (level < 0 || level >= MAX_TEXTURE_LEVELS) {
_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 ||
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_VALUE,
"glCopyTexImage%dD(internalFormat)", dimensions);
return GL_TRUE;
}
}
baseFormat = _mesa_base_tex_format(ctx, internalFormat);
if (baseFormat < 0) {
_mesa_error(ctx, GL_INVALID_VALUE,
"glCopyTexImage%dD(internalFormat)", dimensions);
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)) {
struct gl_renderbuffer *rb = ctx->ReadBuffer->_ColorReadBuffer;
if (_mesa_is_enum_format_integer(rb->InternalFormat) !=
_mesa_is_enum_format_integer(internalFormat)) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glCopyTexImage%dD(integer vs non-integer)", dimensions);
return GL_TRUE;
}
}
/* Do size, level checking */
sizeOK = (proxyTarget == GL_PROXY_TEXTURE_CUBE_MAP_ARB)
? (width == height) : 1;
sizeOK = sizeOK && ctx->Driver.TestProxyTexImage(ctx, proxyTarget, level,
internalFormat, baseFormat,
type, width, height,
1, border);
if (!sizeOK) {
if (dimensions == 1) {
_mesa_error(ctx, GL_INVALID_VALUE,
"glCopyTexImage1D(width=%d)", width);
}
else {
ASSERT(dimensions == 2);
_mesa_error(ctx, GL_INVALID_VALUE,
"glCopyTexImage2D(width=%d, height=%d)", width, height);
}
return GL_TRUE;
}
if (_mesa_is_compressed_format(ctx, internalFormat)) {
if (!target_can_be_compressed(ctx, target, internalFormat)) {
_mesa_error(ctx, GL_INVALID_ENUM,
"glCopyTexImage%dD(target)", dimensions);
return GL_TRUE;
}
if (compressedteximage_only_format(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.
* Note that this is the first part of error checking.
* See also copytexsubimage_error_check2() below for the second part.
*
* \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.
*
* \return GL_TRUE if an error was detected, or GL_FALSE if no errors.
*/
static GLboolean
copytexsubimage_error_check1( struct gl_context *ctx, GLuint dimensions,
GLenum target, GLint level)
{
/* 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,
"glCopyTexSubImage%dD(multisample FBO)",
dimensions);
return GL_TRUE;
}
}
/* check target (proxies not allowed) */
if (!legal_texsubimage_target(ctx, dimensions, target)) {
_mesa_error(ctx, GL_INVALID_ENUM, "glCopyTexSubImage%uD(target=%s)",
dimensions, _mesa_lookup_enum_by_nr(target));
return GL_TRUE;
}
/* Check level */
if (level < 0 || level >= MAX_TEXTURE_LEVELS) {
_mesa_error(ctx, GL_INVALID_VALUE,
"glCopyTexSubImage%dD(level=%d)", dimensions, level);
return GL_TRUE;
}
return GL_FALSE;
}
/**
* Second part of error checking for glCopyTexSubImage[12]D().
* \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 width image width given by the user.
* \param height image height given by the user.
*/
static GLboolean
copytexsubimage_error_check2( struct gl_context *ctx, GLuint dimensions,
GLenum target, GLint level,
GLint xoffset, GLint yoffset, GLint zoffset,
GLsizei width, GLsizei height,
const struct gl_texture_image *teximage )
{
/* check that dest tex image exists */
if (!teximage) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glCopyTexSubImage%dD(undefined texture level: %d)",
dimensions, level);
return GL_TRUE;
}
/* Check size */
if (width < 0) {
_mesa_error(ctx, GL_INVALID_VALUE,
"glCopyTexSubImage%dD(width=%d)", dimensions, width);
return GL_TRUE;
}
if (dimensions > 1 && height < 0) {
_mesa_error(ctx, GL_INVALID_VALUE,
"glCopyTexSubImage%dD(height=%d)", dimensions, height);
return GL_TRUE;
}
/* check x/y offsets */
if (xoffset < -((GLint)teximage->Border)) {
_mesa_error(ctx, GL_INVALID_VALUE,
"glCopyTexSubImage%dD(xoffset=%d)", dimensions, xoffset);
return GL_TRUE;
}
if (xoffset + width > (GLint) (teximage->Width + teximage->Border)) {
_mesa_error(ctx, GL_INVALID_VALUE,
"glCopyTexSubImage%dD(xoffset+width)", dimensions);
return GL_TRUE;
}
if (dimensions > 1) {
GLint yBorder = (target == GL_TEXTURE_1D_ARRAY) ? 0 : teximage->Border;
if (yoffset < -yBorder) {
_mesa_error(ctx, GL_INVALID_VALUE,
"glCopyTexSubImage%dD(yoffset=%d)", dimensions, yoffset);
return GL_TRUE;
}
/* NOTE: we're adding the border here, not subtracting! */
if (yoffset + height > (GLint) teximage->Height + yBorder) {
_mesa_error(ctx, GL_INVALID_VALUE,
"glCopyTexSubImage%dD(yoffset+height)", dimensions);
return GL_TRUE;
}
}
/* check z offset */
if (dimensions > 2) {
GLint zBorder = (target == GL_TEXTURE_2D_ARRAY) ? 0 : teximage->Border;
if (zoffset < -zBorder) {
_mesa_error(ctx, GL_INVALID_VALUE,
"glCopyTexSubImage%dD(zoffset)", dimensions);
return GL_TRUE;
}
if (zoffset > (GLint) teximage->Depth + zBorder) {
_mesa_error(ctx, GL_INVALID_VALUE,
"glCopyTexSubImage%dD(zoffset+depth)", dimensions);
return GL_TRUE;
}
}
if (_mesa_is_format_compressed(teximage->TexFormat)) {
if (compressedteximage_only_format(ctx, teximage->InternalFormat)) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glCopyTexSubImage%dD(no compression for format)", dimensions);
return GL_TRUE;
}
/* offset must be multiple of 4 */
if ((xoffset & 3) || (yoffset & 3)) {
_mesa_error(ctx, GL_INVALID_VALUE,
"glCopyTexSubImage%dD(xoffset or yoffset)", dimensions);
return GL_TRUE;
}
/* size must be multiple of 4 */
if ((width & 3) != 0 && (GLuint) width != teximage->Width) {
_mesa_error(ctx, GL_INVALID_VALUE,
"glCopyTexSubImage%dD(width)", dimensions);
return GL_TRUE;
}
if ((height & 3) != 0 && (GLuint) height != teximage->Height) {
_mesa_error(ctx, GL_INVALID_VALUE,
"glCopyTexSubImage%dD(height)", dimensions);
return GL_TRUE;
}
}
if (teximage->InternalFormat == GL_YCBCR_MESA) {
_mesa_error(ctx, GL_INVALID_OPERATION, "glCopyTexSubImage2D");
return GL_TRUE;
}
if (!_mesa_source_buffer_exists(ctx, teximage->_BaseFormat)) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glCopyTexSubImage%dD(missing readbuffer, format=0x%x)",
dimensions, 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,
"glCopyTexImage%dD(integer vs non-integer)", dimensions);
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) {
ASSERT(_mesa_get_attachment_teximage(att));
/* Tell driver about the new renderbuffer texture */
ctx->Driver.RenderTexture(ctx, ctx->DrawBuffer, att);
/* Mark fb status as indeterminate to force re-validation */
fb->_Status = 0;
}
}
}
}
/**
* 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)
{
ASSERT(target != GL_TEXTURE_CUBE_MAP);
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.
*/
gl_format
_mesa_choose_texture_format(struct gl_context *ctx,
struct gl_texture_object *texObj,
GLenum target, GLint level,
GLenum internalFormat, GLenum format, GLenum type)
{
gl_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(ctx, 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 DTXn 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_lookup_enum_by_nr(before),
_mesa_lookup_enum_by_nr(internalFormat));
}
}
/* choose format from scratch */
f = ctx->Driver.ChooseTextureFormat(ctx, texObj->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) {
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";
GLenum error;
struct gl_pixelstore_attrib unpack_no_border;
const struct gl_pixelstore_attrib *unpack = &ctx->Unpack;
ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
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_lookup_enum_by_nr(target), level,
_mesa_lookup_enum_by_nr(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_lookup_enum_by_nr(target), level,
_mesa_lookup_enum_by_nr(internalFormat),
width, height, depth, border,
_mesa_lookup_enum_by_nr(format),
_mesa_lookup_enum_by_nr(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_lookup_enum_by_nr(target));
return;
}
/* general error checking */
if (compressed) {
error = compressed_texture_error_check(ctx, dims, target, level,
internalFormat,
width, height, depth,
border, imageSize);
}
else {
error = texture_error_check(ctx, dims, target, level, internalFormat,
format, type, width, height, depth, border);
}
#if FEATURE_ES
/* 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 (compressed && !error && 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;
}
}
#endif
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);
gl_format texFormat = MESA_FORMAT_NONE;
if (!error) {
/* No parameter errors. Choose a texture format and see if we
* can really allocate the texture.
*/
struct gl_texture_object *texObj =
_mesa_get_current_tex_object(ctx, target);
texFormat = _mesa_choose_texture_format(ctx, texObj, target, level,
internalFormat, format, type);
if (!legal_texture_size(ctx, texFormat, width, height, depth)) {
error = PROXY_ERROR;
}
}
if (error == PROXY_ERROR) {
/* image too large, etc. Clear all proxy texture image parameters. */
if (texImage)
clear_teximage_fields(texImage);
}
else if (error == GL_FALSE) {
/* no error: store the teximage parameters */
if (texImage)
_mesa_init_teximage_fields(ctx, texImage, width, height, depth,
border, internalFormat, texFormat);
}
else {
/* other, regular error (was already recorded) */
}
}
else {
/* non-proxy target */
const GLuint face = _mesa_tex_target_to_face(target);
struct gl_texture_object *texObj;
struct gl_texture_image *texImage;
if (error) {
return; /* error was recorded */
}
/* 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);
texObj = _mesa_get_current_tex_object(ctx, target);
_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 {
gl_format texFormat;
ctx->Driver.FreeTextureImageBuffer(ctx, texImage);
texFormat = _mesa_choose_texture_format(ctx, texObj, target, level,
internalFormat, format,
type);
if (legal_texture_size(ctx, texFormat, width, height, depth)) {
_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, GL_TRUE);
}
else {
_mesa_error(ctx, GL_OUT_OF_MEMORY, "%s%uD", func, dims);
}
}
}
_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);
}
#if FEATURE_OES_EGL_image
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);
ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
switch (target) {
case GL_TEXTURE_2D:
valid_target = ctx->Extensions.OES_EGL_image;
break;
case GL_TEXTURE_EXTERNAL_OES:
valid_target = ctx->Extensions.OES_EGL_image_external;
break;
default:
valid_target = false;
break;
}
if (!valid_target) {
_mesa_error(ctx, GL_INVALID_ENUM,
"glEGLImageTargetTexture2D(target=%d)", target);
return;
}
if (ctx->NewState & _NEW_PIXEL)
_mesa_update_state(ctx);
texObj = _mesa_get_current_tex_object(ctx, target);
_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, GL_TRUE);
}
_mesa_unlock_texture(ctx, texObj);
}
#endif
/**
* Implement all the glTexSubImage1/2/3D() functions.
*/
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 )
{
struct gl_texture_object *texObj;
struct gl_texture_image *texImage;
ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
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_lookup_enum_by_nr(target), level,
xoffset, yoffset, zoffset, width, height, depth,
_mesa_lookup_enum_by_nr(format),
_mesa_lookup_enum_by_nr(type), pixels);
/* check target (proxies not allowed) */
if (!legal_texsubimage_target(ctx, dims, target)) {
_mesa_error(ctx, GL_INVALID_ENUM, "glTexSubImage%uD(target=%s)",
dims, _mesa_lookup_enum_by_nr(target));
return;
}
if (ctx->NewState & _NEW_PIXEL)
_mesa_update_state(ctx);
if (subtexture_error_check(ctx, dims, target, level, xoffset, yoffset, zoffset,
width, height, depth, format, type)) {
return; /* error was detected */
}
texObj = _mesa_get_current_tex_object(ctx, target);
_mesa_lock_texture(ctx, texObj);
{
texImage = _mesa_select_tex_image(ctx, texObj, target, level);
if (subtexture_error_check2(ctx, dims, target, level,
xoffset, yoffset, zoffset,
width, height, depth,
format, type, texImage)) {
/* error was recorded */
}
else 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);
ctx->NewState |= _NEW_TEXTURE;
}
}
_mesa_unlock_texture(ctx, texObj);
}
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);
}
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);
}
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);
}
/**
* 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, gl_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 {
/* copying from color buffer */
return ctx->ReadBuffer->_ColorReadBuffer;
}
}
/**
* 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);
ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
if (MESA_VERBOSE & (VERBOSE_API|VERBOSE_TEXTURE))
_mesa_debug(ctx, "glCopyTexImage%uD %s %d %s %d %d %d %d %d\n",
dims,
_mesa_lookup_enum_by_nr(target), level,
_mesa_lookup_enum_by_nr(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;
texObj = _mesa_get_current_tex_object(ctx, target);
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 {
/* choose actual hw format */
gl_format texFormat = _mesa_choose_texture_format(ctx, texObj,
target, level,
internalFormat,
GL_NONE, GL_NONE);
if (legal_texture_size(ctx, texFormat, width, height, 1)) {
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);
/* Allocate texture memory (no pixel data yet) */
ctx->Driver.TexImage(ctx, dims, texImage,
GL_NONE, GL_NONE,
NULL, &ctx->Unpack);
if (_mesa_clip_copytexsubimage(ctx, &dstX, &dstY, &srcX, &srcY,
&width, &height)) {
struct gl_renderbuffer *srcRb =
get_copy_tex_image_source(ctx, texImage->TexFormat);
ctx->Driver.CopyTexSubImage(ctx, dims, texImage, 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, GL_TRUE);
}
else {
/* probably too large of image */
_mesa_error(ctx, GL_OUT_OF_MEMORY, "glCopyTexImage%uD", dims);
}
}
}
_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 glCopyTexSubImage1/2/3D() functions.
*/
static void
copytexsubimage(struct gl_context *ctx, GLuint dims, GLenum target, GLint level,
GLint xoffset, GLint yoffset, GLint zoffset,
GLint x, GLint y, GLsizei width, GLsizei height)
{
struct gl_texture_object *texObj;
struct gl_texture_image *texImage;
ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
if (MESA_VERBOSE & (VERBOSE_API|VERBOSE_TEXTURE))
_mesa_debug(ctx, "glCopyTexSubImage%uD %s %d %d %d %d %d %d %d %d\n",
dims,
_mesa_lookup_enum_by_nr(target),
level, xoffset, yoffset, zoffset, x, y, width, height);
if (ctx->NewState & NEW_COPY_TEX_STATE)
_mesa_update_state(ctx);
if (copytexsubimage_error_check1(ctx, dims, target, level))
return;
texObj = _mesa_get_current_tex_object(ctx, target);
_mesa_lock_texture(ctx, texObj);
{
texImage = _mesa_select_tex_image(ctx, texObj, target, level);
if (copytexsubimage_error_check2(ctx, dims, target, level, xoffset, yoffset,
zoffset, width, height, texImage)) {
/* error was recored */
}
else {
/* 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);
ctx->Driver.CopyTexSubImage(ctx, dims, texImage,
xoffset, yoffset, zoffset,
srcRb, x, y, width, height);
check_gen_mipmap(ctx, target, texObj, level);
ctx->NewState |= _NEW_TEXTURE;
}
}
}
_mesa_unlock_texture(ctx, texObj);
}
void GLAPIENTRY
_mesa_CopyTexSubImage1D( GLenum target, GLint level,
GLint xoffset, GLint x, GLint y, GLsizei width )
{
GET_CURRENT_CONTEXT(ctx);
copytexsubimage(ctx, 1, target, level, xoffset, 0, 0, x, y, width, 1);
}
void GLAPIENTRY
_mesa_CopyTexSubImage2D( GLenum target, GLint level,
GLint xoffset, GLint yoffset,
GLint x, GLint y, GLsizei width, GLsizei height )
{
GET_CURRENT_CONTEXT(ctx);
copytexsubimage(ctx, 2, target, level, xoffset, yoffset, 0, x, y,
width, height);
}
void GLAPIENTRY
_mesa_CopyTexSubImage3D( GLenum target, GLint level,
GLint xoffset, GLint yoffset, GLint zoffset,
GLint x, GLint y, GLsizei width, GLsizei height )
{
GET_CURRENT_CONTEXT(ctx);
copytexsubimage(ctx, 3, target, level, xoffset, yoffset, zoffset,
x, y, width, height);
}
/**********************************************************************/
/****** Compressed Textures ******/
/**********************************************************************/
/**
* Error checking for glCompressedTexSubImage[123]D().
* \warning There are some bad assumptions here about the size of compressed
* texture tiles (multiple of 4) used to test the validity of the
* offset and size parameters.
* \return error code or GL_NO_ERROR.
*/
static GLenum
compressed_subtexture_error_check(struct gl_context *ctx, GLint dimensions,
GLenum target, GLint level,
GLint xoffset, GLint yoffset, GLint zoffset,
GLsizei width, GLsizei height, GLsizei depth,
GLenum format, GLsizei imageSize)
{
GLint expectedSize, maxLevels = 0, maxTextureSize;
GLuint bw, bh;
(void) zoffset;
if (dimensions == 1) {
/* 1D compressed textures not allowed */
return GL_INVALID_ENUM;
}
else if (dimensions == 2) {
if (target == GL_PROXY_TEXTURE_2D) {
maxLevels = ctx->Const.MaxTextureLevels;
}
else if (target == GL_TEXTURE_2D) {
maxLevels = ctx->Const.MaxTextureLevels;
}
else if (target == GL_PROXY_TEXTURE_CUBE_MAP_ARB) {
if (!ctx->Extensions.ARB_texture_cube_map)
return GL_INVALID_ENUM; /*target*/
maxLevels = ctx->Const.MaxCubeTextureLevels;
}
else if (_mesa_is_cube_face(target)) {
if (!ctx->Extensions.ARB_texture_cube_map)
return GL_INVALID_ENUM; /*target*/
maxLevels = ctx->Const.MaxCubeTextureLevels;
}
else {
return GL_INVALID_ENUM; /*target*/
}
}
else if (dimensions == 3) {
/* 3D compressed textures not allowed */
return GL_INVALID_ENUM;
}
maxTextureSize = 1 << (maxLevels - 1);
/* this will catch any invalid compressed format token */
if (!_mesa_is_compressed_format(ctx, format))
return GL_INVALID_ENUM;
if (width < 0 || width > maxTextureSize)
return GL_INVALID_VALUE;
if ((height < 0 || height > maxTextureSize)
&& dimensions > 1)
return GL_INVALID_VALUE;
if (level < 0 || level >= maxLevels)
return GL_INVALID_VALUE;
/*
* do checks which depend on compression block size
*/
get_compressed_block_size(format, &bw, &bh);
if ((xoffset % bw != 0) || (yoffset % bh != 0))
return GL_INVALID_OPERATION;
if ((width % bw != 0) && width != 2 && width != 1)
return GL_INVALID_OPERATION;
if ((height % bh != 0) && height != 2 && height != 1)
return GL_INVALID_OPERATION;
expectedSize = compressed_tex_size(width, height, depth, format);
if (expectedSize != imageSize)
return GL_INVALID_VALUE;
return GL_NO_ERROR;
}
/**
* Do second part of glCompressedTexSubImage error checking.
* \return GL_TRUE if error found, GL_FALSE otherwise.
*/
static GLboolean
compressed_subtexture_error_check2(struct gl_context *ctx, GLuint dims,
GLsizei width, GLsizei height,
GLsizei depth, GLenum format,
struct gl_texture_image *texImage)
{
if (!texImage) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glCompressedTexSubImage%uD(undefined image level)", dims);
return GL_TRUE;
}
if ((GLint) format != texImage->InternalFormat) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glCompressedTexSubImage%uD(format=0x%x)", dims, format);
return GL_TRUE;
}
if (compressedteximage_only_format(ctx, format)) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glCompressedTexSubImage%uD(format=0x%x cannot be updated)"
, dims, format);
return GL_TRUE;
}
if (((width == 1 || width == 2) &&
width != (GLsizei) texImage->Width) ||
(width > (GLsizei) texImage->Width)) {
_mesa_error(ctx, GL_INVALID_VALUE,
"glCompressedTexSubImage%uD(width=%d)", dims, width);
return GL_TRUE;
}
if (dims >= 2) {
if (((height == 1 || height == 2) &&
height != (GLsizei) texImage->Height) ||
(height > (GLsizei) texImage->Height)) {
_mesa_error(ctx, GL_INVALID_VALUE,
"glCompressedTexSubImage%uD(height=%d)", dims, height);
return GL_TRUE;
}
}
if (dims >= 3) {
if (((depth == 1 || depth == 2) &&
depth != (GLsizei) texImage->Depth) ||
(depth > (GLsizei) texImage->Depth)) {
_mesa_error(ctx, GL_INVALID_VALUE,
"glCompressedTexSubImage%uD(depth=%d)", dims, depth);
return GL_TRUE;
}
}
return GL_FALSE;
}
void GLAPIENTRY
_mesa_CompressedTexImage1DARB(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_CompressedTexImage2DARB(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_CompressedTexImage3DARB(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().
*/
static void
compressed_tex_sub_image(GLuint dims, 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;
GLenum error;
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
error = compressed_subtexture_error_check(ctx, dims, target, level,
xoffset, 0, 0, /* pos */
width, height, depth, /* size */
format, imageSize);
if (error) {
_mesa_error(ctx, error, "glCompressedTexSubImage%uD", dims);
return;
}
texObj = _mesa_get_current_tex_object(ctx, target);
_mesa_lock_texture(ctx, texObj);
{
texImage = _mesa_select_tex_image(ctx, texObj, target, level);
if (compressed_subtexture_error_check2(ctx, dims, width, height, depth,
format, texImage)) {
/* error was recorded */
}
else 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);
ctx->NewState |= _NEW_TEXTURE;
}
}
_mesa_unlock_texture(ctx, texObj);
}
void GLAPIENTRY
_mesa_CompressedTexSubImage1DARB(GLenum target, GLint level, GLint xoffset,
GLsizei width, GLenum format,
GLsizei imageSize, const GLvoid *data)
{
compressed_tex_sub_image(1, target, level, xoffset, 0, 0, width, 1, 1,
format, imageSize, data);
}
void GLAPIENTRY
_mesa_CompressedTexSubImage2DARB(GLenum target, GLint level, GLint xoffset,
GLint yoffset, GLsizei width, GLsizei height,
GLenum format, GLsizei imageSize,
const GLvoid *data)
{
compressed_tex_sub_image(2, target, level, xoffset, yoffset, 0,
width, height, 1, format, imageSize, data);
}
void GLAPIENTRY
_mesa_CompressedTexSubImage3DARB(GLenum target, GLint level, GLint xoffset,
GLint yoffset, GLint zoffset, GLsizei width,
GLsizei height, GLsizei depth, GLenum format,
GLsizei imageSize, const GLvoid *data)
{
compressed_tex_sub_image(3, target, level, xoffset, yoffset, zoffset,
width, height, depth, format, imageSize, data);
}
static gl_format
get_texbuffer_format(const struct gl_context *ctx, GLenum internalFormat)
{
switch (internalFormat) {
case GL_ALPHA8:
return MESA_FORMAT_A8;
case GL_ALPHA16:
return MESA_FORMAT_A16;
case GL_ALPHA16F_ARB:
return MESA_FORMAT_ALPHA_FLOAT16;
case GL_ALPHA32F_ARB:
return MESA_FORMAT_ALPHA_FLOAT32;
case GL_ALPHA8I_EXT:
return MESA_FORMAT_ALPHA_INT8;
case GL_ALPHA16I_EXT:
return MESA_FORMAT_ALPHA_INT16;
case GL_ALPHA32I_EXT:
return MESA_FORMAT_ALPHA_INT32;
case GL_ALPHA8UI_EXT:
return MESA_FORMAT_ALPHA_UINT8;
case GL_ALPHA16UI_EXT:
return MESA_FORMAT_ALPHA_UINT16;
case GL_ALPHA32UI_EXT:
return MESA_FORMAT_ALPHA_UINT32;
case GL_LUMINANCE8:
return MESA_FORMAT_L8;
case GL_LUMINANCE16:
return MESA_FORMAT_L16;
case GL_LUMINANCE16F_ARB:
return MESA_FORMAT_LUMINANCE_FLOAT16;
case GL_LUMINANCE32F_ARB:
return MESA_FORMAT_LUMINANCE_FLOAT32;
case GL_LUMINANCE8I_EXT:
return MESA_FORMAT_LUMINANCE_INT8;
case GL_LUMINANCE16I_EXT:
return MESA_FORMAT_LUMINANCE_INT16;
case GL_LUMINANCE32I_EXT:
return MESA_FORMAT_LUMINANCE_INT32;
case GL_LUMINANCE8UI_EXT:
return MESA_FORMAT_LUMINANCE_UINT8;
case GL_LUMINANCE16UI_EXT:
return MESA_FORMAT_LUMINANCE_UINT16;
case GL_LUMINANCE32UI_EXT:
return MESA_FORMAT_LUMINANCE_UINT32;
case GL_LUMINANCE8_ALPHA8:
return MESA_FORMAT_AL88;
case GL_LUMINANCE16_ALPHA16:
return MESA_FORMAT_AL1616;
case GL_LUMINANCE_ALPHA16F_ARB:
return MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16;
case GL_LUMINANCE_ALPHA32F_ARB:
return MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32;
case GL_LUMINANCE_ALPHA8I_EXT:
return MESA_FORMAT_LUMINANCE_ALPHA_INT8;
case GL_LUMINANCE_ALPHA16I_EXT:
return MESA_FORMAT_LUMINANCE_ALPHA_INT8;
case GL_LUMINANCE_ALPHA32I_EXT:
return MESA_FORMAT_LUMINANCE_ALPHA_INT16;
case GL_LUMINANCE_ALPHA8UI_EXT:
return MESA_FORMAT_LUMINANCE_ALPHA_UINT8;
case GL_LUMINANCE_ALPHA16UI_EXT:
return MESA_FORMAT_LUMINANCE_ALPHA_UINT16;
case GL_LUMINANCE_ALPHA32UI_EXT:
return MESA_FORMAT_LUMINANCE_ALPHA_UINT32;
case GL_INTENSITY8:
return MESA_FORMAT_I8;
case GL_INTENSITY16:
return MESA_FORMAT_I16;
case GL_INTENSITY16F_ARB:
return MESA_FORMAT_INTENSITY_FLOAT16;
case GL_INTENSITY32F_ARB:
return MESA_FORMAT_INTENSITY_FLOAT32;
case GL_INTENSITY8I_EXT:
return MESA_FORMAT_INTENSITY_INT8;
case GL_INTENSITY16I_EXT:
return MESA_FORMAT_INTENSITY_INT16;
case GL_INTENSITY32I_EXT:
return MESA_FORMAT_INTENSITY_INT32;
case GL_INTENSITY8UI_EXT:
return MESA_FORMAT_INTENSITY_UINT8;
case GL_INTENSITY16UI_EXT:
return MESA_FORMAT_INTENSITY_UINT16;
case GL_INTENSITY32UI_EXT:
return MESA_FORMAT_INTENSITY_UINT32;
case GL_RGBA8:
return MESA_FORMAT_RGBA8888_REV;
case GL_RGBA16:
return MESA_FORMAT_RGBA_16;
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_INT8;
case GL_RGBA16I_EXT:
return MESA_FORMAT_RGBA_INT16;
case GL_RGBA32I_EXT:
return MESA_FORMAT_RGBA_INT32;
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_GR88;
case GL_RG16:
return MESA_FORMAT_RG1616;
case GL_RG16F:
return MESA_FORMAT_RG_FLOAT16;
case GL_RG32F:
return MESA_FORMAT_RG_FLOAT32;
case GL_RG8I:
return MESA_FORMAT_RG_INT8;
case GL_RG16I:
return MESA_FORMAT_RG_INT16;
case GL_RG32I:
return MESA_FORMAT_RG_INT32;
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_R8;
case GL_R16:
return MESA_FORMAT_R16;
case GL_R16F:
return MESA_FORMAT_R_FLOAT16;
case GL_R32F:
return MESA_FORMAT_R_FLOAT32;
case GL_R8I:
return MESA_FORMAT_R_INT8;
case GL_R16I:
return MESA_FORMAT_R_INT16;
case GL_R32I:
return MESA_FORMAT_R_INT32;
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;
}
}
static gl_format
validate_texbuffer_format(const struct gl_context *ctx, GLenum internalFormat)
{
gl_format format = get_texbuffer_format(ctx, internalFormat);
GLenum datatype;
if (format == MESA_FORMAT_NONE)
return MESA_FORMAT_NONE;
datatype = _mesa_get_format_datatype(format);
if (datatype == GL_FLOAT && !ctx->Extensions.ARB_texture_float)
return MESA_FORMAT_NONE;
if (datatype == GL_HALF_FLOAT && !ctx->Extensions.ARB_half_float_pixel)
return MESA_FORMAT_NONE;
/* The GL_ARB_texture_rg and GL_ARB_texture_buffer_object specs don't make
* any mention of R/RG formats, but they appear in the GL 3.1 core
* specification.
*/
if (ctx->Version <= 30) {
GLenum base_format = _mesa_get_format_base_format(format);
if (base_format == GL_R || base_format == GL_RG)
return MESA_FORMAT_NONE;
}
return format;
}
/** 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;
gl_format format;
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
if (!(ctx->Extensions.ARB_texture_buffer_object
&& _mesa_is_desktop_gl(ctx))) {
_mesa_error(ctx, GL_INVALID_OPERATION, "glTexBuffer");
return;
}
if (target != GL_TEXTURE_BUFFER_ARB) {
_mesa_error(ctx, GL_INVALID_ENUM, "glTexBuffer(target)");
return;
}
format = validate_texbuffer_format(ctx, internalFormat);
if (format == MESA_FORMAT_NONE) {
_mesa_error(ctx, GL_INVALID_ENUM, "glTexBuffer(internalFormat 0x%x)",
internalFormat);
return;
}
bufObj = _mesa_lookup_bufferobj(ctx, buffer);
if (buffer && !bufObj) {
_mesa_error(ctx, GL_INVALID_OPERATION, "glTexBuffer(buffer %u)", buffer);
return;
}
texObj = _mesa_get_current_tex_object(ctx, target);
_mesa_lock_texture(ctx, texObj);
{
_mesa_reference_buffer_object(ctx, &texObj->BufferObject, bufObj);
texObj->BufferObjectFormat = internalFormat;
texObj->_BufferObjectFormat = format;
}
_mesa_unlock_texture(ctx, texObj);
}