/*
* Copyright © 2012 Intel Corporation
*
* 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 (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#include "mtypes.h"
#include "context.h"
#include "glformats.h"
#include "macros.h"
#include "enums.h"
#include "fbobject.h"
#include "formatquery.h"
#include "teximage.h"
#include "texparam.h"
#include "texobj.h"
#include "get.h"
#include "genmipmap.h"
#include "shaderimage.h"
#include "texcompress.h"
#include "textureview.h"
static bool
_is_renderable(struct gl_context *ctx, GLenum internalformat)
{
/* Section 4.4.4 on page 212 of the GLES 3.0.4 spec says:
*
* "An internal format is color-renderable if it is one of the
* formats from table 3.13 noted as color-renderable or if it
* is unsized format RGBA or RGB."
*
* Therefore, we must accept GL_RGB and GL_RGBA here.
*/
if (internalformat != GL_RGB && internalformat != GL_RGBA &&
_mesa_base_fbo_format(ctx, internalformat) == 0)
return false;
return true;
}
/* Handles the cases where either ARB_internalformat_query or
* ARB_internalformat_query2 have to return an error.
*/
static bool
_legal_parameters(struct gl_context *ctx, GLenum target, GLenum internalformat,
GLenum pname, GLsizei bufSize, GLint *params)
{
bool query2 = _mesa_has_ARB_internalformat_query2(ctx);
/* The ARB_internalformat_query2 spec says:
*
* "The INVALID_ENUM error is generated if the <target> parameter to
* GetInternalformati*v is not one of the targets listed in Table 6.xx.
*/
switch(target){
case GL_TEXTURE_1D:
case GL_TEXTURE_1D_ARRAY:
case GL_TEXTURE_2D:
case GL_TEXTURE_2D_ARRAY:
case GL_TEXTURE_3D:
case GL_TEXTURE_CUBE_MAP:
case GL_TEXTURE_CUBE_MAP_ARRAY:
case GL_TEXTURE_RECTANGLE:
case GL_TEXTURE_BUFFER:
if (!query2) {
/* The ARB_internalformat_query spec says:
*
* "If the <target> parameter to GetInternalformativ is not one of
* TEXTURE_2D_MULTISAMPLE, TEXTURE_2D_MULTISAMPLE_ARRAY
* or RENDERBUFFER then an INVALID_ENUM error is generated.
*/
_mesa_error(ctx, GL_INVALID_ENUM,
"glGetInternalformativ(target=%s)",
_mesa_enum_to_string(target));
return false;
}
break;
case GL_RENDERBUFFER:
break;
case GL_TEXTURE_2D_MULTISAMPLE:
case GL_TEXTURE_2D_MULTISAMPLE_ARRAY:
/* The non-existence of ARB_texture_multisample is treated in
* ARB_internalformat_query implementation like an error.
*/
if (!query2 &&
!(_mesa_has_ARB_texture_multisample(ctx) || _mesa_is_gles31(ctx))) {
_mesa_error(ctx, GL_INVALID_ENUM,
"glGetInternalformativ(target=%s)",
_mesa_enum_to_string(target));
return false;
}
break;
default:
_mesa_error(ctx, GL_INVALID_ENUM,
"glGetInternalformativ(target=%s)",
_mesa_enum_to_string(target));
return false;
}
/* The ARB_internalformat_query2 spec says:
*
* "The INVALID_ENUM error is generated if the <pname> parameter is
* not one of the listed possibilities.
*/
switch(pname){
case GL_SAMPLES:
case GL_NUM_SAMPLE_COUNTS:
break;
case GL_SRGB_DECODE_ARB:
/* The ARB_internalformat_query2 spec says:
*
* "If ARB_texture_sRGB_decode or EXT_texture_sRGB_decode or
* equivalent functionality is not supported, queries for the
* SRGB_DECODE_ARB <pname> set the INVALID_ENUM error.
*/
if (!_mesa_has_EXT_texture_sRGB_decode(ctx)) {
_mesa_error(ctx, GL_INVALID_ENUM,
"glGetInternalformativ(pname=%s)",
_mesa_enum_to_string(pname));
return false;
}
/* fallthrough */
case GL_INTERNALFORMAT_SUPPORTED:
case GL_INTERNALFORMAT_PREFERRED:
case GL_INTERNALFORMAT_RED_SIZE:
case GL_INTERNALFORMAT_GREEN_SIZE:
case GL_INTERNALFORMAT_BLUE_SIZE:
case GL_INTERNALFORMAT_ALPHA_SIZE:
case GL_INTERNALFORMAT_DEPTH_SIZE:
case GL_INTERNALFORMAT_STENCIL_SIZE:
case GL_INTERNALFORMAT_SHARED_SIZE:
case GL_INTERNALFORMAT_RED_TYPE:
case GL_INTERNALFORMAT_GREEN_TYPE:
case GL_INTERNALFORMAT_BLUE_TYPE:
case GL_INTERNALFORMAT_ALPHA_TYPE:
case GL_INTERNALFORMAT_DEPTH_TYPE:
case GL_INTERNALFORMAT_STENCIL_TYPE:
case GL_MAX_WIDTH:
case GL_MAX_HEIGHT:
case GL_MAX_DEPTH:
case GL_MAX_LAYERS:
case GL_MAX_COMBINED_DIMENSIONS:
case GL_COLOR_COMPONENTS:
case GL_DEPTH_COMPONENTS:
case GL_STENCIL_COMPONENTS:
case GL_COLOR_RENDERABLE:
case GL_DEPTH_RENDERABLE:
case GL_STENCIL_RENDERABLE:
case GL_FRAMEBUFFER_RENDERABLE:
case GL_FRAMEBUFFER_RENDERABLE_LAYERED:
case GL_FRAMEBUFFER_BLEND:
case GL_READ_PIXELS:
case GL_READ_PIXELS_FORMAT:
case GL_READ_PIXELS_TYPE:
case GL_TEXTURE_IMAGE_FORMAT:
case GL_TEXTURE_IMAGE_TYPE:
case GL_GET_TEXTURE_IMAGE_FORMAT:
case GL_GET_TEXTURE_IMAGE_TYPE:
case GL_MIPMAP:
case GL_MANUAL_GENERATE_MIPMAP:
case GL_AUTO_GENERATE_MIPMAP:
case GL_COLOR_ENCODING:
case GL_SRGB_READ:
case GL_SRGB_WRITE:
case GL_FILTER:
case GL_VERTEX_TEXTURE:
case GL_TESS_CONTROL_TEXTURE:
case GL_TESS_EVALUATION_TEXTURE:
case GL_GEOMETRY_TEXTURE:
case GL_FRAGMENT_TEXTURE:
case GL_COMPUTE_TEXTURE:
case GL_TEXTURE_SHADOW:
case GL_TEXTURE_GATHER:
case GL_TEXTURE_GATHER_SHADOW:
case GL_SHADER_IMAGE_LOAD:
case GL_SHADER_IMAGE_STORE:
case GL_SHADER_IMAGE_ATOMIC:
case GL_IMAGE_TEXEL_SIZE:
case GL_IMAGE_COMPATIBILITY_CLASS:
case GL_IMAGE_PIXEL_FORMAT:
case GL_IMAGE_PIXEL_TYPE:
case GL_IMAGE_FORMAT_COMPATIBILITY_TYPE:
case GL_SIMULTANEOUS_TEXTURE_AND_DEPTH_TEST:
case GL_SIMULTANEOUS_TEXTURE_AND_STENCIL_TEST:
case GL_SIMULTANEOUS_TEXTURE_AND_DEPTH_WRITE:
case GL_SIMULTANEOUS_TEXTURE_AND_STENCIL_WRITE:
case GL_TEXTURE_COMPRESSED:
case GL_TEXTURE_COMPRESSED_BLOCK_WIDTH:
case GL_TEXTURE_COMPRESSED_BLOCK_HEIGHT:
case GL_TEXTURE_COMPRESSED_BLOCK_SIZE:
case GL_CLEAR_BUFFER:
case GL_TEXTURE_VIEW:
case GL_VIEW_COMPATIBILITY_CLASS:
/* The ARB_internalformat_query spec says:
*
* "If the <pname> parameter to GetInternalformativ is not SAMPLES
* or NUM_SAMPLE_COUNTS, then an INVALID_ENUM error is generated."
*/
if (!query2) {
_mesa_error(ctx, GL_INVALID_ENUM,
"glGetInternalformativ(pname=%s)",
_mesa_enum_to_string(pname));
return false;
}
break;
default:
_mesa_error(ctx, GL_INVALID_ENUM,
"glGetInternalformativ(pname=%s)",
_mesa_enum_to_string(pname));
return false;
}
/* The ARB_internalformat_query spec says:
*
* "If the <bufSize> parameter to GetInternalformativ is negative, then
* an INVALID_VALUE error is generated."
*
* Nothing is said in ARB_internalformat_query2 but we assume the same.
*/
if (bufSize < 0) {
_mesa_error(ctx, GL_INVALID_VALUE,
"glGetInternalformativ(target=%s)",
_mesa_enum_to_string(target));
return false;
}
/* The ARB_internalformat_query spec says:
*
* "If the <internalformat> parameter to GetInternalformativ is not
* color-, depth- or stencil-renderable, then an INVALID_ENUM error is
* generated."
*/
if (!query2 && !_is_renderable(ctx, internalformat)) {
_mesa_error(ctx, GL_INVALID_ENUM,
"glGetInternalformativ(internalformat=%s)",
_mesa_enum_to_string(internalformat));
return false;
}
return true;
}
/* Sets the appropriate "unsupported" response as defined by the
* ARB_internalformat_query2 spec for each each <pname>.
*/
static void
_set_default_response(GLenum pname, GLint buffer[16])
{
/* The ARB_internalformat_query2 defines which is the reponse best
* representing "not supported" or "not applicable" for each <pname>.
*
* " In general:
* - size- or count-based queries will return zero,
* - support-, format- or type-based queries will return NONE,
* - boolean-based queries will return FALSE, and
* - list-based queries return no entries."
*/
switch(pname) {
case GL_SAMPLES:
break;
case GL_MAX_COMBINED_DIMENSIONS:
/* This value can be a 64-bit value. As the default is the 32-bit query,
* we pack 2 32-bit integers. So we need to clean both */
buffer[0] = 0;
buffer[1] = 0;
break;
case GL_NUM_SAMPLE_COUNTS:
case GL_INTERNALFORMAT_RED_SIZE:
case GL_INTERNALFORMAT_GREEN_SIZE:
case GL_INTERNALFORMAT_BLUE_SIZE:
case GL_INTERNALFORMAT_ALPHA_SIZE:
case GL_INTERNALFORMAT_DEPTH_SIZE:
case GL_INTERNALFORMAT_STENCIL_SIZE:
case GL_INTERNALFORMAT_SHARED_SIZE:
case GL_MAX_WIDTH:
case GL_MAX_HEIGHT:
case GL_MAX_DEPTH:
case GL_MAX_LAYERS:
case GL_IMAGE_TEXEL_SIZE:
case GL_TEXTURE_COMPRESSED_BLOCK_WIDTH:
case GL_TEXTURE_COMPRESSED_BLOCK_HEIGHT:
case GL_TEXTURE_COMPRESSED_BLOCK_SIZE:
buffer[0] = 0;
break;
case GL_INTERNALFORMAT_PREFERRED:
case GL_INTERNALFORMAT_RED_TYPE:
case GL_INTERNALFORMAT_GREEN_TYPE:
case GL_INTERNALFORMAT_BLUE_TYPE:
case GL_INTERNALFORMAT_ALPHA_TYPE:
case GL_INTERNALFORMAT_DEPTH_TYPE:
case GL_INTERNALFORMAT_STENCIL_TYPE:
case GL_FRAMEBUFFER_RENDERABLE:
case GL_FRAMEBUFFER_RENDERABLE_LAYERED:
case GL_FRAMEBUFFER_BLEND:
case GL_READ_PIXELS:
case GL_READ_PIXELS_FORMAT:
case GL_READ_PIXELS_TYPE:
case GL_TEXTURE_IMAGE_FORMAT:
case GL_TEXTURE_IMAGE_TYPE:
case GL_GET_TEXTURE_IMAGE_FORMAT:
case GL_GET_TEXTURE_IMAGE_TYPE:
case GL_MANUAL_GENERATE_MIPMAP:
case GL_AUTO_GENERATE_MIPMAP:
case GL_COLOR_ENCODING:
case GL_SRGB_READ:
case GL_SRGB_WRITE:
case GL_SRGB_DECODE_ARB:
case GL_FILTER:
case GL_VERTEX_TEXTURE:
case GL_TESS_CONTROL_TEXTURE:
case GL_TESS_EVALUATION_TEXTURE:
case GL_GEOMETRY_TEXTURE:
case GL_FRAGMENT_TEXTURE:
case GL_COMPUTE_TEXTURE:
case GL_TEXTURE_SHADOW:
case GL_TEXTURE_GATHER:
case GL_TEXTURE_GATHER_SHADOW:
case GL_SHADER_IMAGE_LOAD:
case GL_SHADER_IMAGE_STORE:
case GL_SHADER_IMAGE_ATOMIC:
case GL_IMAGE_COMPATIBILITY_CLASS:
case GL_IMAGE_PIXEL_FORMAT:
case GL_IMAGE_PIXEL_TYPE:
case GL_IMAGE_FORMAT_COMPATIBILITY_TYPE:
case GL_SIMULTANEOUS_TEXTURE_AND_DEPTH_TEST:
case GL_SIMULTANEOUS_TEXTURE_AND_STENCIL_TEST:
case GL_SIMULTANEOUS_TEXTURE_AND_DEPTH_WRITE:
case GL_SIMULTANEOUS_TEXTURE_AND_STENCIL_WRITE:
case GL_CLEAR_BUFFER:
case GL_TEXTURE_VIEW:
case GL_VIEW_COMPATIBILITY_CLASS:
buffer[0] = GL_NONE;
break;
case GL_INTERNALFORMAT_SUPPORTED:
case GL_COLOR_COMPONENTS:
case GL_DEPTH_COMPONENTS:
case GL_STENCIL_COMPONENTS:
case GL_COLOR_RENDERABLE:
case GL_DEPTH_RENDERABLE:
case GL_STENCIL_RENDERABLE:
case GL_MIPMAP:
case GL_TEXTURE_COMPRESSED:
buffer[0] = GL_FALSE;
break;
default:
unreachable("invalid 'pname'");
}
}
static bool
_is_target_supported(struct gl_context *ctx, GLenum target)
{
/* The ARB_internalformat_query2 spec says:
*
* "if a particular type of <target> is not supported by the
* implementation the "unsupported" answer should be given.
* This is not an error."
*
* For OpenGL ES, queries can only be used with GL_RENDERBUFFER or MS.
*/
switch(target){
case GL_TEXTURE_1D:
case GL_TEXTURE_2D:
case GL_TEXTURE_3D:
if (!_mesa_is_desktop_gl(ctx))
return false;
break;
case GL_TEXTURE_1D_ARRAY:
if (!_mesa_has_EXT_texture_array(ctx))
return false;
break;
case GL_TEXTURE_2D_ARRAY:
if (!_mesa_has_EXT_texture_array(ctx))
return false;
break;
case GL_TEXTURE_CUBE_MAP:
if (ctx->API != API_OPENGL_CORE && !_mesa_has_ARB_texture_cube_map(ctx))
return false;
break;
case GL_TEXTURE_CUBE_MAP_ARRAY:
if (!_mesa_has_ARB_texture_cube_map_array(ctx))
return false;
break;
case GL_TEXTURE_RECTANGLE:
if (!_mesa_has_ARB_texture_rectangle(ctx))
return false;
break;
case GL_TEXTURE_BUFFER:
if (!_mesa_has_ARB_texture_buffer_object(ctx))
return false;
break;
case GL_RENDERBUFFER:
if (!(_mesa_has_ARB_framebuffer_object(ctx) ||
_mesa_is_gles3(ctx)))
return false;
break;
case GL_TEXTURE_2D_MULTISAMPLE:
case GL_TEXTURE_2D_MULTISAMPLE_ARRAY:
if (!(_mesa_has_ARB_texture_multisample(ctx) ||
_mesa_is_gles31(ctx)))
return false;
break;
default:
unreachable("invalid target");
}
return true;
}
static bool
_is_resource_supported(struct gl_context *ctx, GLenum target,
GLenum internalformat, GLenum pname)
{
/* From the ARB_internalformat_query2 spec:
*
* In the following descriptions, the term /resource/ is used to generically
* refer to an object of the appropriate type that has been created with
* <internalformat> and <target>. If the particular <target> and
* <internalformat> combination do not make sense, ... the "unsupported"
* answer should be given. This is not an error.
*/
/* In the ARB_internalformat_query2 spec wording, some <pnames> do not care
* about the /resource/ being supported or not, we return 'true' for those.
*/
switch (pname) {
case GL_INTERNALFORMAT_SUPPORTED:
case GL_INTERNALFORMAT_PREFERRED:
case GL_COLOR_COMPONENTS:
case GL_DEPTH_COMPONENTS:
case GL_STENCIL_COMPONENTS:
case GL_COLOR_RENDERABLE:
case GL_DEPTH_RENDERABLE:
case GL_STENCIL_RENDERABLE:
return true;
default:
break;
}
switch(target){
case GL_TEXTURE_1D:
case GL_TEXTURE_1D_ARRAY:
case GL_TEXTURE_2D:
case GL_TEXTURE_2D_ARRAY:
case GL_TEXTURE_3D:
case GL_TEXTURE_CUBE_MAP:
case GL_TEXTURE_CUBE_MAP_ARRAY:
case GL_TEXTURE_RECTANGLE:
/* Based on what Mesa does for glTexImage1D/2D/3D and
* glCompressedTexImage1D/2D/3D functions.
*/
if (_mesa_base_tex_format(ctx, internalformat) < 0)
return false;
/* additional checks for depth textures */
if (!_mesa_legal_texture_base_format_for_target(ctx, target, internalformat))
return false;
/* additional checks for compressed textures */
if (_mesa_is_compressed_format(ctx, internalformat) &&
(!_mesa_target_can_be_compressed(ctx, target, internalformat, NULL) ||
_mesa_format_no_online_compression(ctx, internalformat)))
return false;
break;
case GL_TEXTURE_2D_MULTISAMPLE:
case GL_TEXTURE_2D_MULTISAMPLE_ARRAY:
/* Based on what Mesa does for glTexImage2D/3DMultisample,
* glTexStorage2D/3DMultisample and
* glTextureStorage2D/3DMultisample functions.
*/
if (!_mesa_is_renderable_texture_format(ctx, internalformat))
return false;
break;
case GL_TEXTURE_BUFFER:
/* Based on what Mesa does for the glTexBuffer function. */
if (_mesa_validate_texbuffer_format(ctx, internalformat) ==
MESA_FORMAT_NONE)
return false;
break;
case GL_RENDERBUFFER:
/* Based on what Mesa does for glRenderbufferStorage(Multisample) and
* glNamedRenderbufferStorage functions.
*/
if (!_mesa_base_fbo_format(ctx, internalformat))
return false;
break;
default:
unreachable("bad target");
}
return true;
}
static bool
_is_internalformat_supported(struct gl_context *ctx, GLenum target,
GLenum internalformat)
{
/* From the ARB_internalformat_query2 specification:
*
* "- INTERNALFORMAT_SUPPORTED: If <internalformat> is an internal format
* that is supported by the implementation in at least some subset of
* possible operations, TRUE is written to <params>. If <internalformat>
* if not a valid token for any internal format usage, FALSE is returned.
*
* <internalformats> that must be supported (in GL 4.2 or later) include
* the following:
* - "sized internal formats" from Table 3.12, 3.13, and 3.15,
* - any specific "compressed internal format" from Table 3.14,
* - any "image unit format" from Table 3.21.
* - any generic "compressed internal format" from Table 3.14, if the
* implementation accepts it for any texture specification commands, and
* - unsized or base internal format, if the implementation accepts
* it for texture or image specification.
*/
GLint buffer[1];
/* At this point an internalformat is valid if it is valid as a texture or
* as a renderbuffer format. The checks are different because those methods
* return different values when passing non supported internalformats */
if (_mesa_base_tex_format(ctx, internalformat) < 0 &&
_mesa_base_fbo_format(ctx, internalformat) == 0)
return false;
/* Let the driver have the final word */
ctx->Driver.QueryInternalFormat(ctx, target, internalformat,
GL_INTERNALFORMAT_SUPPORTED, buffer);
return (buffer[0] == GL_TRUE);
}
static bool
_legal_target_for_framebuffer_texture_layer(struct gl_context *ctx,
GLenum target)
{
switch (target) {
case GL_TEXTURE_3D:
case GL_TEXTURE_1D_ARRAY:
case GL_TEXTURE_2D_ARRAY:
case GL_TEXTURE_CUBE_MAP_ARRAY:
case GL_TEXTURE_2D_MULTISAMPLE_ARRAY:
case GL_TEXTURE_CUBE_MAP:
return true;
default:
return false;
}
}
static GLenum
_mesa_generic_type_for_internal_format(GLenum internalFormat)
{
if (_mesa_is_enum_format_unsigned_int(internalFormat))
return GL_UNSIGNED_BYTE;
else if (_mesa_is_enum_format_signed_int(internalFormat))
return GL_BYTE;
else
return GL_FLOAT;
}
/* default implementation of QueryInternalFormat driverfunc, for
* drivers not implementing ARB_internalformat_query2.
*/
void
_mesa_query_internal_format_default(struct gl_context *ctx, GLenum target,
GLenum internalFormat, GLenum pname,
GLint *params)
{
(void) target;
switch (pname) {
case GL_SAMPLES:
case GL_NUM_SAMPLE_COUNTS:
params[0] = 1;
break;
case GL_INTERNALFORMAT_SUPPORTED:
params[0] = GL_TRUE;
break;
case GL_INTERNALFORMAT_PREFERRED:
params[0] = internalFormat;
break;
case GL_READ_PIXELS_FORMAT: {
GLenum base_format = _mesa_base_tex_format(ctx, internalFormat);
switch (base_format) {
case GL_STENCIL_INDEX:
case GL_DEPTH_COMPONENT:
case GL_DEPTH_STENCIL:
case GL_RED:
case GL_RGB:
case GL_BGR:
case GL_RGBA:
case GL_BGRA:
params[0] = base_format;
break;
default:
params[0] = GL_NONE;
break;
}
break;
}
case GL_READ_PIXELS_TYPE:
case GL_TEXTURE_IMAGE_TYPE:
case GL_GET_TEXTURE_IMAGE_TYPE: {
GLenum base_format = _mesa_base_tex_format(ctx, internalFormat);
if (base_format > 0)
params[0] = _mesa_generic_type_for_internal_format(internalFormat);
else
params[0] = GL_NONE;
break;
}
case GL_TEXTURE_IMAGE_FORMAT:
case GL_GET_TEXTURE_IMAGE_FORMAT: {
GLenum format = GL_NONE;
GLenum base_format = _mesa_base_tex_format(ctx, internalFormat);
if (base_format > 0) {
if (_mesa_is_enum_format_integer(internalFormat))
format = _mesa_base_format_to_integer_format(base_format);
else
format = base_format;
}
params[0] = format;
break;
}
case GL_MANUAL_GENERATE_MIPMAP:
case GL_AUTO_GENERATE_MIPMAP:
case GL_SRGB_READ:
case GL_SRGB_WRITE:
case GL_SRGB_DECODE_ARB:
case GL_VERTEX_TEXTURE:
case GL_TESS_CONTROL_TEXTURE:
case GL_TESS_EVALUATION_TEXTURE:
case GL_GEOMETRY_TEXTURE:
case GL_FRAGMENT_TEXTURE:
case GL_COMPUTE_TEXTURE:
case GL_SHADER_IMAGE_LOAD:
case GL_SHADER_IMAGE_STORE:
case GL_SHADER_IMAGE_ATOMIC:
case GL_SIMULTANEOUS_TEXTURE_AND_DEPTH_TEST:
case GL_SIMULTANEOUS_TEXTURE_AND_STENCIL_TEST:
case GL_SIMULTANEOUS_TEXTURE_AND_DEPTH_WRITE:
case GL_SIMULTANEOUS_TEXTURE_AND_STENCIL_WRITE:
case GL_CLEAR_BUFFER:
case GL_TEXTURE_VIEW:
case GL_TEXTURE_SHADOW:
case GL_TEXTURE_GATHER:
case GL_TEXTURE_GATHER_SHADOW:
case GL_FRAMEBUFFER_RENDERABLE:
case GL_FRAMEBUFFER_RENDERABLE_LAYERED:
case GL_FRAMEBUFFER_BLEND:
case GL_FILTER:
params[0] = GL_FULL_SUPPORT;
break;
default:
_set_default_response(pname, params);
break;
}
}
/*
* For MAX_WIDTH/MAX_HEIGHT/MAX_DEPTH it returns the equivalent GetInteger
* pname for a Getinternalformat pname/target combination. target/pname
* combinations that would return 0 due dimension number or unsupported status
* should be already filtered out
*
* Note that this means that the returned value would be independent of the
* internalformat. This possibility is already mentioned at the Issue 7 of the
* arb_internalformat_query2 spec.
*/
static GLenum
equivalentSizePname(GLenum target,
GLenum pname)
{
switch (target) {
case GL_TEXTURE_1D:
case GL_TEXTURE_2D:
case GL_TEXTURE_2D_MULTISAMPLE:
return GL_MAX_TEXTURE_SIZE;
case GL_TEXTURE_3D:
return GL_MAX_3D_TEXTURE_SIZE;
case GL_TEXTURE_CUBE_MAP:
return GL_MAX_CUBE_MAP_TEXTURE_SIZE;
case GL_TEXTURE_RECTANGLE:
return GL_MAX_RECTANGLE_TEXTURE_SIZE;
case GL_RENDERBUFFER:
return GL_MAX_RENDERBUFFER_SIZE;
case GL_TEXTURE_1D_ARRAY:
if (pname == GL_MAX_HEIGHT)
return GL_MAX_ARRAY_TEXTURE_LAYERS;
else
return GL_MAX_TEXTURE_SIZE;
case GL_TEXTURE_2D_ARRAY:
case GL_TEXTURE_2D_MULTISAMPLE_ARRAY:
if (pname == GL_MAX_DEPTH)
return GL_MAX_ARRAY_TEXTURE_LAYERS;
else
return GL_MAX_TEXTURE_SIZE;
case GL_TEXTURE_CUBE_MAP_ARRAY:
if (pname == GL_MAX_DEPTH)
return GL_MAX_ARRAY_TEXTURE_LAYERS;
else
return GL_MAX_CUBE_MAP_TEXTURE_SIZE;
case GL_TEXTURE_BUFFER:
return GL_MAX_TEXTURE_BUFFER_SIZE;
default:
return 0;
}
}
/*
* Returns the dimensions associated to a target. GL_TEXTURE_BUFFER and
* GL_RENDERBUFFER have associated a dimension, but they are not textures
* per-se, so we can't just call _mesa_get_texture_dimension directly.
*/
static GLint
get_target_dimensions(GLenum target)
{
switch(target) {
case GL_TEXTURE_BUFFER:
return 1;
case GL_RENDERBUFFER:
return 2;
default:
return _mesa_get_texture_dimensions(target);
}
}
/*
* Returns the minimum amount of dimensions associated to a pname. So for
* example, if querying GL_MAX_HEIGHT, it is assumed that your target would
* have as minimum 2 dimensions.
*
* Useful to handle sentences like this from query2 spec:
*
* "MAX_HEIGHT:
* <skip>
* If the resource does not have at least two dimensions
* <skip>."
*/
static GLint
get_min_dimensions(GLenum pname)
{
switch(pname) {
case GL_MAX_WIDTH:
return 1;
case GL_MAX_HEIGHT:
return 2;
case GL_MAX_DEPTH:
return 3;
default:
return 0;
}
}
/*
* Similar to teximage.c:check_multisample_target, but independent of the
* dimensions.
*/
static bool
is_multisample_target(GLenum target)
{
switch(target) {
case GL_TEXTURE_2D_MULTISAMPLE:
case GL_TEXTURE_2D_MULTISAMPLE_ARRAY:
return true;
default:
return false;
}
}
void GLAPIENTRY
_mesa_GetInternalformativ(GLenum target, GLenum internalformat, GLenum pname,
GLsizei bufSize, GLint *params)
{
GLint buffer[16];
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END(ctx);
/* ARB_internalformat_query is also mandatory for ARB_internalformat_query2 */
if (!(_mesa_has_ARB_internalformat_query(ctx) ||
_mesa_is_gles3(ctx))) {
_mesa_error(ctx, GL_INVALID_OPERATION, "glGetInternalformativ");
return;
}
assert(ctx->Driver.QueryInternalFormat != NULL);
if (!_legal_parameters(ctx, target, internalformat, pname, bufSize, params))
return;
/* initialize the contents of the temporary buffer */
memcpy(buffer, params, MIN2(bufSize, 16) * sizeof(GLint));
/* Use the 'unsupported' response defined by the spec for every pname
* as the default answer.
*/
_set_default_response(pname, buffer);
if (!_is_target_supported(ctx, target) ||
!_is_internalformat_supported(ctx, target, internalformat) ||
!_is_resource_supported(ctx, target, internalformat, pname))
goto end;
switch (pname) {
case GL_SAMPLES:
/* fall-through */
case GL_NUM_SAMPLE_COUNTS:
/* The ARB_internalformat_query2 sets the response as 'unsupported' for
* SAMPLES and NUM_SAMPLE_COUNTS:
*
* "If <internalformat> is not color-renderable, depth-renderable, or
* stencil-renderable (as defined in section 4.4.4), or if <target>
* does not support multiple samples (ie other than
* TEXTURE_2D_MULTISAMPLE, TEXTURE_2D_MULTISAMPLE_ARRAY,
* or RENDERBUFFER)."
*/
if ((target != GL_RENDERBUFFER &&
target != GL_TEXTURE_2D_MULTISAMPLE &&
target != GL_TEXTURE_2D_MULTISAMPLE_ARRAY) ||
!_is_renderable(ctx, internalformat))
goto end;
/* The GL ES 3.0 specification, section 6.1.15 page 236 says:
*
* "Since multisampling is not supported for signed and unsigned
* integer internal formats, the value of NUM_SAMPLE_COUNTS will be
* zero for such formats.
*
* Since OpenGL ES 3.1 adds support for multisampled integer formats, we
* have to check the version for 30 exactly.
*/
if (pname == GL_NUM_SAMPLE_COUNTS && ctx->API == API_OPENGLES2 &&
ctx->Version == 30 && _mesa_is_enum_format_integer(internalformat)) {
goto end;
}
ctx->Driver.QueryInternalFormat(ctx, target, internalformat, pname,
buffer);
break;
case GL_INTERNALFORMAT_SUPPORTED:
/* Having a supported <internalformat> is implemented as a prerequisite
* for all the <pnames>. Thus, if we reach this point, the internalformat is
* supported.
*/
buffer[0] = GL_TRUE;
break;
case GL_INTERNALFORMAT_PREFERRED:
/* The ARB_internalformat_query2 spec says:
*
* "- INTERNALFORMAT_PREFERRED: The implementation-preferred internal
* format for representing resources of the specified <internalformat> is
* returned in <params>.
*
* Therefore, we let the driver answer. Note that if we reach this
* point, it means that the internalformat is supported, so the driver
* is called just to try to get a preferred format. If not supported,
* GL_NONE was already returned and the driver is not called.
*/
ctx->Driver.QueryInternalFormat(ctx, target, internalformat, pname,
buffer);
break;
case GL_INTERNALFORMAT_RED_SIZE:
case GL_INTERNALFORMAT_GREEN_SIZE:
case GL_INTERNALFORMAT_BLUE_SIZE:
case GL_INTERNALFORMAT_ALPHA_SIZE:
case GL_INTERNALFORMAT_DEPTH_SIZE:
case GL_INTERNALFORMAT_STENCIL_SIZE:
case GL_INTERNALFORMAT_SHARED_SIZE:
case GL_INTERNALFORMAT_RED_TYPE:
case GL_INTERNALFORMAT_GREEN_TYPE:
case GL_INTERNALFORMAT_BLUE_TYPE:
case GL_INTERNALFORMAT_ALPHA_TYPE:
case GL_INTERNALFORMAT_DEPTH_TYPE:
case GL_INTERNALFORMAT_STENCIL_TYPE: {
GLint baseformat;
mesa_format texformat;
if (target != GL_RENDERBUFFER) {
if (!_mesa_legal_get_tex_level_parameter_target(ctx, target, true))
goto end;
baseformat = _mesa_base_tex_format(ctx, internalformat);
} else {
baseformat = _mesa_base_fbo_format(ctx, internalformat);
}
/* Let the driver choose the texture format.
*
* Disclaimer: I am considering that drivers use for renderbuffers the
* same format-choice logic as for textures.
*/
texformat = ctx->Driver.ChooseTextureFormat(ctx, target, internalformat,
GL_NONE /*format */, GL_NONE /* type */);
if (texformat == MESA_FORMAT_NONE || baseformat <= 0)
goto end;
/* Implementation based on what Mesa does for glGetTexLevelParameteriv
* and glGetRenderbufferParameteriv functions.
*/
if (pname == GL_INTERNALFORMAT_SHARED_SIZE) {
if (_mesa_has_EXT_texture_shared_exponent(ctx) &&
target != GL_TEXTURE_BUFFER &&
target != GL_RENDERBUFFER &&
texformat == MESA_FORMAT_R9G9B9E5_FLOAT) {
buffer[0] = 5;
}
goto end;
}
if (!_mesa_base_format_has_channel(baseformat, pname))
goto end;
switch (pname) {
case GL_INTERNALFORMAT_DEPTH_SIZE:
if (ctx->API != API_OPENGL_CORE &&
!_mesa_has_ARB_depth_texture(ctx) &&
target != GL_RENDERBUFFER &&
target != GL_TEXTURE_BUFFER)
goto end;
/* fallthrough */
case GL_INTERNALFORMAT_RED_SIZE:
case GL_INTERNALFORMAT_GREEN_SIZE:
case GL_INTERNALFORMAT_BLUE_SIZE:
case GL_INTERNALFORMAT_ALPHA_SIZE:
case GL_INTERNALFORMAT_STENCIL_SIZE:
buffer[0] = _mesa_get_format_bits(texformat, pname);
break;
case GL_INTERNALFORMAT_DEPTH_TYPE:
if (!_mesa_has_ARB_texture_float(ctx))
goto end;
/* fallthrough */
case GL_INTERNALFORMAT_RED_TYPE:
case GL_INTERNALFORMAT_GREEN_TYPE:
case GL_INTERNALFORMAT_BLUE_TYPE:
case GL_INTERNALFORMAT_ALPHA_TYPE:
case GL_INTERNALFORMAT_STENCIL_TYPE:
buffer[0] = _mesa_get_format_datatype(texformat);
break;
default:
break;
}
break;
}
/* For WIDTH/HEIGHT/DEPTH/LAYERS there is no reason to think that the
* returned values should be different to the values returned by
* GetInteger with MAX_TEXTURE_SIZE, MAX_3D_TEXTURE_SIZE, etc.*/
case GL_MAX_WIDTH:
case GL_MAX_HEIGHT:
case GL_MAX_DEPTH: {
GLenum get_pname;
GLint dimensions;
GLint min_dimensions;
/* From query2:MAX_HEIGHT spec (as example):
*
* "If the resource does not have at least two dimensions, or if the
* resource is unsupported, zero is returned."
*/
dimensions = get_target_dimensions(target);
min_dimensions = get_min_dimensions(pname);
if (dimensions < min_dimensions)
goto end;
get_pname = equivalentSizePname(target, pname);
if (get_pname == 0)
goto end;
_mesa_GetIntegerv(get_pname, buffer);
break;
}
case GL_MAX_LAYERS:
if (!_mesa_has_EXT_texture_array(ctx))
goto end;
if (!_mesa_is_array_texture(target))
goto end;
_mesa_GetIntegerv(GL_MAX_ARRAY_TEXTURE_LAYERS, buffer);
break;
case GL_MAX_COMBINED_DIMENSIONS:{
GLint64 combined_value = 1;
GLenum max_dimensions_pnames[] = {
GL_MAX_WIDTH,
GL_MAX_HEIGHT,
GL_MAX_DEPTH,
GL_SAMPLES
};
unsigned i;
GLint current_value;
/* Combining the dimensions. Note that for array targets, this would
* automatically include the value of MAX_LAYERS, as that value is
* returned as MAX_HEIGHT or MAX_DEPTH */
for (i = 0; i < 4; i++) {
if (max_dimensions_pnames[i] == GL_SAMPLES &&
!is_multisample_target(target))
continue;
_mesa_GetInternalformativ(target, internalformat,
max_dimensions_pnames[i],
1, ¤t_value);
if (current_value != 0)
combined_value *= current_value;
}
if (_mesa_is_cube_map_texture(target))
combined_value *= 6;
/* We pack the 64-bit value on two 32-bit values. Calling the 32-bit
* query, this would work as far as the value can be hold on a 32-bit
* signed integer. For the 64-bit query, the wrapper around the 32-bit
* query will unpack the value */
memcpy(buffer, &combined_value, sizeof(GLint64));
break;
}
case GL_COLOR_COMPONENTS:
/* The ARB_internalformat_query2 spec says:
*
* "- COLOR_COMPONENTS: If the internal format contains any color
* components (R, G, B, or A), TRUE is returned in <params>.
* If the internal format is unsupported or contains no color
* components, FALSE is returned."
*/
if (_mesa_is_color_format(internalformat))
buffer[0] = GL_TRUE;
break;
case GL_DEPTH_COMPONENTS:
/* The ARB_internalformat_query2 spec says:
*
* "- DEPTH_COMPONENTS: If the internal format contains a depth
* component (D), TRUE is returned in <params>. If the internal format
* is unsupported or contains no depth component, FALSE is returned."
*/
if (_mesa_is_depth_format(internalformat) ||
_mesa_is_depthstencil_format(internalformat))
buffer[0] = GL_TRUE;
break;
case GL_STENCIL_COMPONENTS:
/* The ARB_internalformat_query2 spec says:
*
* "- STENCIL_COMPONENTS: If the internal format contains a stencil
* component (S), TRUE is returned in <params>. If the internal format
* is unsupported or contains no stencil component, FALSE is returned.
*/
if (_mesa_is_stencil_format(internalformat) ||
_mesa_is_depthstencil_format(internalformat))
buffer[0] = GL_TRUE;
break;
case GL_COLOR_RENDERABLE:
case GL_DEPTH_RENDERABLE:
case GL_STENCIL_RENDERABLE:
if (!_is_renderable(ctx, internalformat))
goto end;
if (pname == GL_COLOR_RENDERABLE) {
if (!_mesa_is_color_format(internalformat))
goto end;
} else {
GLenum baseFormat = _mesa_base_fbo_format(ctx, internalformat);
if (baseFormat != GL_DEPTH_STENCIL &&
((pname == GL_DEPTH_RENDERABLE && baseFormat != GL_DEPTH_COMPONENT) ||
(pname == GL_STENCIL_RENDERABLE && baseFormat != GL_STENCIL_INDEX)))
goto end;
}
buffer[0] = GL_TRUE;
break;
case GL_FRAMEBUFFER_RENDERABLE_LAYERED:
if (!_mesa_has_EXT_texture_array(ctx) ||
_legal_target_for_framebuffer_texture_layer(ctx, target))
goto end;
/* fallthrough */
case GL_FRAMEBUFFER_RENDERABLE:
case GL_FRAMEBUFFER_BLEND:
if (!_mesa_has_ARB_framebuffer_object(ctx))
goto end;
if (target == GL_TEXTURE_BUFFER ||
!_is_renderable(ctx, internalformat))
goto end;
ctx->Driver.QueryInternalFormat(ctx, target, internalformat, pname,
buffer);
break;
case GL_READ_PIXELS:
case GL_READ_PIXELS_FORMAT:
case GL_READ_PIXELS_TYPE:
ctx->Driver.QueryInternalFormat(ctx, target, internalformat, pname,
buffer);
break;
case GL_TEXTURE_IMAGE_FORMAT:
case GL_GET_TEXTURE_IMAGE_FORMAT:
case GL_TEXTURE_IMAGE_TYPE:
case GL_GET_TEXTURE_IMAGE_TYPE:
ctx->Driver.QueryInternalFormat(ctx, target, internalformat, pname,
buffer);
break;
case GL_MIPMAP:
case GL_MANUAL_GENERATE_MIPMAP:
case GL_AUTO_GENERATE_MIPMAP:
if (!_mesa_is_valid_generate_texture_mipmap_target(ctx, target) ||
!_mesa_is_valid_generate_texture_mipmap_internalformat(ctx,
internalformat)) {
goto end;
}
if (pname == GL_MIPMAP) {
buffer[0] = GL_TRUE;
goto end;
}
else if (pname == GL_MANUAL_GENERATE_MIPMAP) {
if (!_mesa_has_ARB_framebuffer_object(ctx))
goto end;
}
else {
/* From ARB_internalformat_query2:
* "Dependencies on OpenGL 3.2 (Core Profile)
* In core profiles for OpenGL 3.2 and later versions, queries
* for the AUTO_GENERATE_MIPMAP <pname> return the appropriate
* unsupported response."
*/
if (_mesa_is_desktop_gl(ctx) && ctx->Version >= 32)
goto end;
}
ctx->Driver.QueryInternalFormat(ctx, target, internalformat, pname,
buffer);
break;
case GL_COLOR_ENCODING:
if (!_mesa_is_color_format(internalformat))
goto end;
if (_mesa_is_srgb_format(internalformat))
buffer[0] = GL_SRGB;
else
buffer[0] = GL_LINEAR;
break;
case GL_SRGB_READ:
if (!_mesa_has_EXT_texture_sRGB(ctx) ||
!_mesa_is_srgb_format(internalformat)) {
goto end;
}
ctx->Driver.QueryInternalFormat(ctx, target, internalformat, pname,
buffer);
break;
case GL_SRGB_WRITE:
if (!_mesa_has_EXT_framebuffer_sRGB(ctx) ||
!_mesa_is_color_format(internalformat)) {
goto end;
}
ctx->Driver.QueryInternalFormat(ctx, target, internalformat, pname,
buffer);
break;
case GL_SRGB_DECODE_ARB:
/* Presence of EXT_texture_sRGB_decode was already verified */
if (!_mesa_has_EXT_texture_sRGB(ctx) ||
target == GL_RENDERBUFFER ||
!_mesa_is_srgb_format(internalformat)) {
goto end;
}
ctx->Driver.QueryInternalFormat(ctx, target, internalformat, pname,
buffer);
break;
case GL_FILTER:
/* If it doesn't allow to set sampler parameters then it would not allow
* to set a filter different to GL_NEAREST. In practice, this method
* only filters out MULTISAMPLE/MULTISAMPLE_ARRAY */
if (!_mesa_target_allows_setting_sampler_parameters(target))
goto end;
if (_mesa_is_enum_format_integer(internalformat))
goto end;
if (target == GL_TEXTURE_BUFFER)
goto end;
/* At this point we know that multi-texel filtering is supported. We
* need to call the driver to know if it is CAVEAT_SUPPORT or
* FULL_SUPPORT.
*/
ctx->Driver.QueryInternalFormat(ctx, target, internalformat, pname,
buffer);
break;
case GL_VERTEX_TEXTURE:
case GL_TESS_CONTROL_TEXTURE:
case GL_TESS_EVALUATION_TEXTURE:
case GL_GEOMETRY_TEXTURE:
case GL_FRAGMENT_TEXTURE:
case GL_COMPUTE_TEXTURE:
if (target == GL_RENDERBUFFER)
goto end;
if ((pname == GL_TESS_CONTROL_TEXTURE ||
pname == GL_TESS_EVALUATION_TEXTURE) &&
!_mesa_has_tessellation(ctx))
goto end;
if (pname == GL_GEOMETRY_TEXTURE && !_mesa_has_geometry_shaders(ctx))
goto end;
if (pname == GL_COMPUTE_TEXTURE && !_mesa_has_compute_shaders(ctx))
goto end;
ctx->Driver.QueryInternalFormat(ctx, target, internalformat, pname,
buffer);
break;
case GL_TEXTURE_GATHER:
case GL_TEXTURE_GATHER_SHADOW:
if (!_mesa_has_ARB_texture_gather(ctx))
goto end;
/* fallthrough */
case GL_TEXTURE_SHADOW:
/* Only depth or depth-stencil image formats make sense in shadow
samplers */
if (pname != GL_TEXTURE_GATHER &&
!_mesa_is_depth_format(internalformat) &&
!_mesa_is_depthstencil_format(internalformat))
goto end;
/* Validate the target for shadow and gather operations */
switch (target) {
case GL_TEXTURE_2D:
case GL_TEXTURE_2D_ARRAY:
case GL_TEXTURE_CUBE_MAP:
case GL_TEXTURE_CUBE_MAP_ARRAY:
case GL_TEXTURE_RECTANGLE:
break;
case GL_TEXTURE_1D:
case GL_TEXTURE_1D_ARRAY:
/* 1D and 1DArray textures are not admitted in gather operations */
if (pname != GL_TEXTURE_SHADOW)
goto end;
break;
default:
goto end;
}
ctx->Driver.QueryInternalFormat(ctx, target, internalformat, pname,
buffer);
break;
case GL_SHADER_IMAGE_LOAD:
case GL_SHADER_IMAGE_STORE:
if (!_mesa_has_ARB_shader_image_load_store(ctx))
goto end;
/* We call to _mesa_is_shader_image_format_supported
* using "internalformat" as parameter, because the
* the ARB_internalformat_query2 spec says:
* "In this case the <internalformat> is the value of the <format>
* parameter that is passed to BindImageTexture."
*/
if (target == GL_RENDERBUFFER ||
!_mesa_is_shader_image_format_supported(ctx, internalformat))
goto end;
ctx->Driver.QueryInternalFormat(ctx, target, internalformat, pname,
buffer);
break;
case GL_SHADER_IMAGE_ATOMIC:
if (!_mesa_has_ARB_shader_image_load_store(ctx))
goto end;
ctx->Driver.QueryInternalFormat(ctx, target, internalformat, pname,
buffer);
break;
case GL_IMAGE_TEXEL_SIZE: {
mesa_format image_format;
if (!_mesa_has_ARB_shader_image_load_store(ctx) ||
target == GL_RENDERBUFFER)
goto end;
image_format = _mesa_get_shader_image_format(internalformat);
if (image_format == MESA_FORMAT_NONE)
goto end;
/* We return bits */
buffer[0] = (_mesa_get_format_bytes(image_format) * 8);
break;
}
case GL_IMAGE_COMPATIBILITY_CLASS:
if (!_mesa_has_ARB_shader_image_load_store(ctx) ||
target == GL_RENDERBUFFER)
goto end;
buffer[0] = _mesa_get_image_format_class(internalformat);
break;
case GL_IMAGE_PIXEL_FORMAT: {
GLint base_format;
if (!_mesa_has_ARB_shader_image_load_store(ctx) ||
target == GL_RENDERBUFFER ||
!_mesa_is_shader_image_format_supported(ctx, internalformat))
goto end;
base_format = _mesa_base_tex_format(ctx, internalformat);
if (base_format == -1)
goto end;
if (_mesa_is_enum_format_integer(internalformat))
buffer[0] = _mesa_base_format_to_integer_format(base_format);
else
buffer[0] = base_format;
break;
}
case GL_IMAGE_PIXEL_TYPE: {
mesa_format image_format;
GLenum datatype;
GLuint comps;
if (!_mesa_has_ARB_shader_image_load_store(ctx) ||
target == GL_RENDERBUFFER)
goto end;
image_format = _mesa_get_shader_image_format(internalformat);
if (image_format == MESA_FORMAT_NONE)
goto end;
_mesa_uncompressed_format_to_type_and_comps(image_format, &datatype,
&comps);
if (!datatype)
goto end;
buffer[0] = datatype;
break;
}
case GL_IMAGE_FORMAT_COMPATIBILITY_TYPE: {
if (!_mesa_has_ARB_shader_image_load_store(ctx))
goto end;
if (!_mesa_legal_get_tex_level_parameter_target(ctx, target, true))
goto end;
/* From spec: "Equivalent to calling GetTexParameter with <value> set
* to IMAGE_FORMAT_COMPATIBILITY_TYPE."
*
* GetTexParameter just returns
* tex_obj->ImageFormatCompatibilityType. We create a fake tex_obj
* just with the purpose of getting the value.
*/
struct gl_texture_object *tex_obj = _mesa_new_texture_object(ctx, 0, target);
buffer[0] = tex_obj->ImageFormatCompatibilityType;
_mesa_delete_texture_object(ctx, tex_obj);
break;
}
case GL_SIMULTANEOUS_TEXTURE_AND_DEPTH_TEST:
case GL_SIMULTANEOUS_TEXTURE_AND_STENCIL_TEST:
case GL_SIMULTANEOUS_TEXTURE_AND_DEPTH_WRITE:
case GL_SIMULTANEOUS_TEXTURE_AND_STENCIL_WRITE:
if (target == GL_RENDERBUFFER)
goto end;
if (!_mesa_is_depthstencil_format(internalformat)) {
if (((pname == GL_SIMULTANEOUS_TEXTURE_AND_DEPTH_TEST ||
pname == GL_SIMULTANEOUS_TEXTURE_AND_DEPTH_WRITE) &&
!_mesa_is_depth_format(internalformat)) ||
((pname == GL_SIMULTANEOUS_TEXTURE_AND_STENCIL_TEST ||
pname == GL_SIMULTANEOUS_TEXTURE_AND_STENCIL_WRITE) &&
!_mesa_is_stencil_format(internalformat)))
goto end;
}
ctx->Driver.QueryInternalFormat(ctx, target, internalformat, pname,
buffer);
break;
case GL_TEXTURE_COMPRESSED:
buffer[0] = _mesa_is_compressed_format(ctx, internalformat);
break;
case GL_TEXTURE_COMPRESSED_BLOCK_WIDTH:
case GL_TEXTURE_COMPRESSED_BLOCK_HEIGHT:
case GL_TEXTURE_COMPRESSED_BLOCK_SIZE: {
mesa_format mesaformat;
GLint block_size;
mesaformat = _mesa_glenum_to_compressed_format(internalformat);
if (mesaformat == MESA_FORMAT_NONE)
goto end;
block_size = _mesa_get_format_bytes(mesaformat);
assert(block_size > 0);
if (pname == GL_TEXTURE_COMPRESSED_BLOCK_SIZE) {
buffer[0] = block_size;
} else {
GLuint bwidth, bheight;
/* Returns the width and height in pixels. We return bytes */
_mesa_get_format_block_size(mesaformat, &bwidth, &bheight);
assert(bwidth > 0 && bheight > 0);
if (pname == GL_TEXTURE_COMPRESSED_BLOCK_WIDTH)
buffer[0] = block_size / bheight;
else
buffer[0] = block_size / bwidth;
}
break;
}
case GL_CLEAR_BUFFER:
if (target != GL_TEXTURE_BUFFER)
goto end;
ctx->Driver.QueryInternalFormat(ctx, target, internalformat, pname,
buffer);
break;
case GL_TEXTURE_VIEW:
case GL_VIEW_COMPATIBILITY_CLASS:
if (!_mesa_has_ARB_texture_view(ctx) ||
target == GL_TEXTURE_BUFFER ||
target == GL_RENDERBUFFER)
goto end;
if (pname == GL_TEXTURE_VIEW) {
ctx->Driver.QueryInternalFormat(ctx, target, internalformat, pname,
buffer);
} else {
GLenum view_class = _mesa_texture_view_lookup_view_class(ctx,
internalformat);
if (view_class == GL_FALSE)
goto end;
buffer[0] = view_class;
}
break;
default:
unreachable("bad param");
}
end:
if (bufSize != 0 && params == NULL) {
/* Emit a warning to aid application debugging, but go ahead and do the
* memcpy (and probably crash) anyway.
*/
_mesa_warning(ctx,
"glGetInternalformativ(bufSize = %d, but params = NULL)",
bufSize);
}
/* Copy the data from the temporary buffer to the buffer supplied by the
* application. Clamp the size of the copy to the size supplied by the
* application.
*/
memcpy(params, buffer, MIN2(bufSize, 16) * sizeof(GLint));
return;
}
void GLAPIENTRY
_mesa_GetInternalformati64v(GLenum target, GLenum internalformat,
GLenum pname, GLsizei bufSize, GLint64 *params)
{
GLint params32[16];
unsigned i;
GLsizei realSize = MIN2(bufSize, 16);
GLsizei callSize;
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END(ctx);
if (!_mesa_has_ARB_internalformat_query2(ctx)) {
_mesa_error(ctx, GL_INVALID_OPERATION, "glGetInternalformati64v");
return;
}
/* For SAMPLES there are cases where params needs to remain unmodified. As
* no pname can return a negative value, we fill params32 with negative
* values as reference values, that can be used to know what copy-back to
* params */
memset(params32, -1, 16);
/* For GL_MAX_COMBINED_DIMENSIONS we need to get back 2 32-bit integers,
* and at the same time we only need 2. So for that pname, we call the
* 32-bit query with bufSize 2, except on the case of bufSize 0, that is
* basically like asking to not get the value, but that is a caller
* problem. */
if (pname == GL_MAX_COMBINED_DIMENSIONS && bufSize > 0)
callSize = 2;
else
callSize = bufSize;
_mesa_GetInternalformativ(target, internalformat, pname, callSize, params32);
if (pname == GL_MAX_COMBINED_DIMENSIONS) {
memcpy(params, params32, sizeof(GLint64));
} else {
for (i = 0; i < realSize; i++) {
/* We only copy back the values that changed */
if (params32[i] < 0)
break;
params[i] = (GLint64) params32[i];
}
}
}