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magnum/src/Magnum/Implementation/TextureState.cpp

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/*
This file is part of Magnum.
Copyright © 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018
Vladimír Vondruš <mosra@centrum.cz>
Permission is hereby granted, free of charge, to any person obtaining a
copy of this software and associated documentation files (the "Software"),
to deal in the Software without restriction, including without limitation
the rights to use, copy, modify, merge, publish, distribute, sublicense,
and/or sell copies of the Software, and to permit persons to whom the
Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included
in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
DEALINGS IN THE SOFTWARE.
*/
#include "TextureState.h"
#include <Corrade/Utility/Assert.h>
#include "Magnum/AbstractTexture.h"
#include "Magnum/CubeMapTexture.h"
#if !defined(MAGNUM_TARGET_GLES2) && !defined(MAGNUM_TARGET_WEBGL)
#include "Magnum/BufferTexture.h"
#endif
#include "Magnum/Context.h"
#include "Magnum/Extensions.h"
#include "State.h"
namespace Magnum { namespace Implementation {
TextureState::TextureState(Context& context, std::vector<std::string>& extensions): maxSize{},
#if !(defined(MAGNUM_TARGET_WEBGL) && defined(MAGNUM_TARGET_GLES2))
max3DSize{},
#endif
maxCubeMapSize{},
#ifndef MAGNUM_TARGET_GLES2
maxArrayLayers{},
#endif
#ifndef MAGNUM_TARGET_GLES
maxRectangleSize{}, maxBufferSize{},
#endif
maxTextureUnits(0),
#ifndef MAGNUM_TARGET_GLES2
maxLodBias{0.0f},
#endif
maxMaxAnisotropy(0.0f), currentTextureUnit(0)
#ifndef MAGNUM_TARGET_GLES2
, maxColorSamples(0), maxDepthSamples(0), maxIntegerSamples(0)
#endif
#ifndef MAGNUM_TARGET_GLES
, bufferOffsetAlignment(0)
#endif
{
/* Create implementation */
#ifndef MAGNUM_TARGET_GLES
if(context.isExtensionSupported<Extensions::GL::ARB::direct_state_access>()) {
extensions.emplace_back(Extensions::GL::ARB::direct_state_access::string());
createImplementation = &AbstractTexture::createImplementationDSA;
} else
#endif
{
createImplementation = &AbstractTexture::createImplementationDefault;
}
/* Single bind implementation */
#ifndef MAGNUM_TARGET_GLES
if(context.isExtensionSupported<Extensions::GL::ARB::direct_state_access>()) {
/* Extension name added below */
unbindImplementation = &AbstractTexture::unbindImplementationDSA;
bindImplementation = &AbstractTexture::bindImplementationDSA;
} else if(context.isExtensionSupported<Extensions::GL::ARB::multi_bind>()) {
/* Extension name added below */
unbindImplementation = &AbstractTexture::unbindImplementationMulti;
bindImplementation = &AbstractTexture::bindImplementationMulti;
} else if(context.isExtensionSupported<Extensions::GL::EXT::direct_state_access>()) {
/* Extension name added below */
unbindImplementation = &AbstractTexture::unbindImplementationDSAEXT;
bindImplementation = &AbstractTexture::bindImplementationDSAEXT;
} else
#endif
{
unbindImplementation = &AbstractTexture::unbindImplementationDefault;
bindImplementation = &AbstractTexture::bindImplementationDefault;
}
/* Multi bind implementation */
#ifndef MAGNUM_TARGET_GLES
if(context.isExtensionSupported<Extensions::GL::ARB::multi_bind>()) {
extensions.emplace_back(Extensions::GL::ARB::multi_bind::string());
bindMultiImplementation = &AbstractTexture::bindImplementationMulti;
} else
#endif
{
bindMultiImplementation = &AbstractTexture::bindImplementationFallback;
}
/* DSA/non-DSA implementation */
#ifndef MAGNUM_TARGET_GLES
if(context.isExtensionSupported<Extensions::GL::ARB::direct_state_access>()) {
extensions.emplace_back(Extensions::GL::ARB::direct_state_access::string());
parameteriImplementation = &AbstractTexture::parameterImplementationDSA;
parameterfImplementation = &AbstractTexture::parameterImplementationDSA;
parameterivImplementation = &AbstractTexture::parameterImplementationDSA;
parameterfvImplementation = &AbstractTexture::parameterImplementationDSA;
parameterIuivImplementation = &AbstractTexture::parameterIImplementationDSA;
parameterIivImplementation = &AbstractTexture::parameterIImplementationDSA;
getLevelParameterivImplementation = &AbstractTexture::getLevelParameterImplementationDSA;
mipmapImplementation = &AbstractTexture::mipmapImplementationDSA;
subImage1DImplementation = &AbstractTexture::subImageImplementationDSA;
subImage2DImplementation = &AbstractTexture::subImage2DImplementationDSA;
subImage3DImplementation = &AbstractTexture::subImage3DImplementationDSA;
compressedSubImage1DImplementation = &AbstractTexture::compressedSubImageImplementationDSA;
compressedSubImage2DImplementation = &AbstractTexture::compressedSubImageImplementationDSA;
compressedSubImage3DImplementation = &AbstractTexture::compressedSubImageImplementationDSA;
setBufferImplementation = &BufferTexture::setBufferImplementationDSA;
setBufferRangeImplementation = &BufferTexture::setBufferRangeImplementationDSA;
getCubeLevelParameterivImplementation = &CubeMapTexture::getLevelParameterImplementationDSA;
cubeSubImageImplementation = &CubeMapTexture::subImageImplementationDSA;
cubeCompressedSubImageImplementation = &CubeMapTexture::compressedSubImageImplementationDSA;
} else if(context.isExtensionSupported<Extensions::GL::EXT::direct_state_access>()) {
extensions.emplace_back(Extensions::GL::EXT::direct_state_access::string());
parameteriImplementation = &AbstractTexture::parameterImplementationDSAEXT;
parameterfImplementation = &AbstractTexture::parameterImplementationDSAEXT;
parameterivImplementation = &AbstractTexture::parameterImplementationDSAEXT;
parameterfvImplementation = &AbstractTexture::parameterImplementationDSAEXT;
parameterIuivImplementation = &AbstractTexture::parameterIImplementationDSAEXT;
parameterIivImplementation = &AbstractTexture::parameterIImplementationDSAEXT;
getLevelParameterivImplementation = &AbstractTexture::getLevelParameterImplementationDSAEXT;
mipmapImplementation = &AbstractTexture::mipmapImplementationDSAEXT;
subImage1DImplementation = &AbstractTexture::subImageImplementationDSAEXT;
subImage2DImplementation = &AbstractTexture::subImageImplementationDSAEXT;
subImage3DImplementation = &AbstractTexture::subImageImplementationDSAEXT;
compressedSubImage1DImplementation = &AbstractTexture::compressedSubImageImplementationDSAEXT;
compressedSubImage2DImplementation = &AbstractTexture::compressedSubImageImplementationDSAEXT;
compressedSubImage3DImplementation = &AbstractTexture::compressedSubImageImplementationDSAEXT;
setBufferImplementation = &BufferTexture::setBufferImplementationDSAEXT;
setBufferRangeImplementation = &BufferTexture::setBufferRangeImplementationDSAEXT;
getCubeLevelParameterivImplementation = &CubeMapTexture::getLevelParameterImplementationDSAEXT;
cubeSubImageImplementation = &CubeMapTexture::subImageImplementationDSAEXT;
cubeCompressedSubImageImplementation = &CubeMapTexture::compressedSubImageImplementationDSAEXT;
} else
#endif
{
parameteriImplementation = &AbstractTexture::parameterImplementationDefault;
parameterfImplementation = &AbstractTexture::parameterImplementationDefault;
#ifndef MAGNUM_TARGET_GLES2
parameterivImplementation = &AbstractTexture::parameterImplementationDefault;
#endif
parameterfvImplementation = &AbstractTexture::parameterImplementationDefault;
#ifndef MAGNUM_TARGET_GLES
parameterIuivImplementation = &AbstractTexture::parameterIImplementationDefault;
parameterIivImplementation = &AbstractTexture::parameterIImplementationDefault;
#endif
#if !defined(MAGNUM_TARGET_GLES2) && !defined(MAGNUM_TARGET_WEBGL)
getLevelParameterivImplementation = &AbstractTexture::getLevelParameterImplementationDefault;
#endif
mipmapImplementation = &AbstractTexture::mipmapImplementationDefault;
#ifndef MAGNUM_TARGET_GLES
subImage1DImplementation = &AbstractTexture::subImageImplementationDefault;
compressedSubImage1DImplementation = &AbstractTexture::compressedSubImageImplementationDefault;
#endif
subImage2DImplementation = &AbstractTexture::subImage2DImplementationDefault;
compressedSubImage2DImplementation = &AbstractTexture::compressedSubImageImplementationDefault;
#if !(defined(MAGNUM_TARGET_WEBGL) && defined(MAGNUM_TARGET_GLES2))
subImage3DImplementation = &AbstractTexture::subImage3DImplementationDefault;
compressedSubImage3DImplementation = &AbstractTexture::compressedSubImageImplementationDefault;
#endif
#ifndef MAGNUM_TARGET_GLES
setBufferImplementation = &BufferTexture::setBufferImplementationDefault;
setBufferRangeImplementation = &BufferTexture::setBufferRangeImplementationDefault;
#endif
#if !defined(MAGNUM_TARGET_GLES2) && !defined(MAGNUM_TARGET_WEBGL)
getCubeLevelParameterivImplementation = &CubeMapTexture::getLevelParameterImplementationDefault;
#endif
cubeSubImageImplementation = &CubeMapTexture::subImageImplementationDefault;
cubeCompressedSubImageImplementation = &CubeMapTexture::compressedSubImageImplementationDefault;
}
#if defined(MAGNUM_TARGET_GLES) && !defined(MAGNUM_TARGET_GLES2) && !defined(MAGNUM_TARGET_WEBGL)
/* Integer parameter implementation for ES3 */
if(context.isVersionSupported(Version::GLES320)) {
parameterIuivImplementation = &AbstractTexture::parameterIImplementationDefault;
parameterIivImplementation = &AbstractTexture::parameterIImplementationDefault;
} else if(context.isExtensionSupported<Extensions::GL::EXT::texture_border_clamp>()) {
parameterIuivImplementation = &AbstractTexture::parameterIImplementationEXT;
parameterIivImplementation = &AbstractTexture::parameterIImplementationEXT;
} else {
parameterIuivImplementation = nullptr;
parameterIivImplementation = nullptr;
}
/* Buffer texture implementation for ES3 */
if(context.isVersionSupported(Version::GLES320)) {
setBufferImplementation = &BufferTexture::setBufferImplementationDefault;
setBufferRangeImplementation = &BufferTexture::setBufferRangeImplementationDefault;
} else if(context.isExtensionSupported<Extensions::GL::EXT::texture_buffer>()) {
setBufferImplementation = &BufferTexture::setBufferImplementationEXT;
setBufferRangeImplementation = &BufferTexture::setBufferRangeImplementationEXT;
} else {
setBufferImplementation = nullptr;
setBufferRangeImplementation = nullptr;
}
#endif
/* Data invalidation implementation */
#ifndef MAGNUM_TARGET_GLES
if(context.isExtensionSupported<Extensions::GL::ARB::invalidate_subdata>()) {
extensions.emplace_back(Extensions::GL::ARB::invalidate_subdata::string());
invalidateImageImplementation = &AbstractTexture::invalidateImageImplementationARB;
invalidateSubImageImplementation = &AbstractTexture::invalidateSubImageImplementationARB;
} else
#endif
{
invalidateImageImplementation = &AbstractTexture::invalidateImageImplementationNoOp;
invalidateSubImageImplementation = &AbstractTexture::invalidateSubImageImplementationNoOp;
}
#ifndef MAGNUM_TARGET_GLES
/* Compressed cubemap image size query implementation (extensions added
above) */
if((context.detectedDriver() & Context::DetectedDriver::NVidia) &&
!context.isDriverWorkaroundDisabled("nv-cubemap-inconsistent-compressed-image-size")) {
if(context.isExtensionSupported<Extensions::GL::ARB::direct_state_access>())
getCubeLevelCompressedImageSizeImplementation = &CubeMapTexture::getLevelCompressedImageSizeImplementationDSANonImmutableWorkaround;
else if(context.isExtensionSupported<Extensions::GL::EXT::direct_state_access>())
getCubeLevelCompressedImageSizeImplementation = &CubeMapTexture::getLevelCompressedImageSizeImplementationDSAEXTImmutableWorkaround;
else getCubeLevelCompressedImageSizeImplementation = &CubeMapTexture::getLevelCompressedImageSizeImplementationDefaultImmutableWorkaround;
} else {
if(context.isExtensionSupported<Extensions::GL::ARB::direct_state_access>())
getCubeLevelCompressedImageSizeImplementation = &CubeMapTexture::getLevelCompressedImageSizeImplementationDSA;
else if(context.isExtensionSupported<Extensions::GL::EXT::direct_state_access>())
getCubeLevelCompressedImageSizeImplementation = &CubeMapTexture::getLevelCompressedImageSizeImplementationDSAEXT;
else getCubeLevelCompressedImageSizeImplementation = &CubeMapTexture::getLevelCompressedImageSizeImplementationDefault;
}
/* Image retrieval implementation */
if(context.isExtensionSupported<Extensions::GL::ARB::direct_state_access>()) {
/* Extension name added above */
getImageImplementation = &AbstractTexture::getImageImplementationDSA;
getCompressedImageImplementation = &AbstractTexture::getCompressedImageImplementationDSA;
} else if(context.isExtensionSupported<Extensions::GL::ARB::robustness>()) {
extensions.emplace_back(Extensions::GL::ARB::robustness::string());
getImageImplementation = &AbstractTexture::getImageImplementationRobustness;
getCompressedImageImplementation = &AbstractTexture::getCompressedImageImplementationRobustness;
} else if(context.isExtensionSupported<Extensions::GL::EXT::direct_state_access>()) {
/* Extension name added above */
getImageImplementation = &AbstractTexture::getImageImplementationDSAEXT;
getCompressedImageImplementation = &AbstractTexture::getCompressedImageImplementationDSAEXT;
} else {
getImageImplementation = &AbstractTexture::getImageImplementationDefault;
getCompressedImageImplementation = &AbstractTexture::getCompressedImageImplementationDefault;
}
/* Image retrieval implementation for cube map */
if(context.isExtensionSupported<Extensions::GL::ARB::get_texture_sub_image>()) {
extensions.emplace_back(Extensions::GL::ARB::get_texture_sub_image::string());
getCubeImageImplementation = &CubeMapTexture::getImageImplementationDSA;
getCompressedCubeImageImplementation = &CubeMapTexture::getCompressedImageImplementationDSA;
} else if(context.isExtensionSupported<Extensions::GL::ARB::robustness>()) {
/* Extension name added above */
getCubeImageImplementation = &CubeMapTexture::getImageImplementationRobustness;
getCompressedCubeImageImplementation = &CubeMapTexture::getCompressedImageImplementationRobustness;
} else if(context.isExtensionSupported<Extensions::GL::EXT::direct_state_access>()) {
/* Extension name added above */
getCubeImageImplementation = &CubeMapTexture::getImageImplementationDSAEXT;
getCompressedCubeImageImplementation = &CubeMapTexture::getCompressedImageImplementationDSAEXT;
} else {
getCubeImageImplementation = &CubeMapTexture::getImageImplementationDefault;
getCompressedCubeImageImplementation = &CubeMapTexture::getCompressedImageImplementationDefault;
}
/* Full compressed cubemap image query implementation (extensions added
above) */
if((context.detectedDriver() & Context::DetectedDriver::NVidia) &&
context.isExtensionSupported<Extensions::GL::ARB::direct_state_access>() &&
!context.isDriverWorkaroundDisabled("nv-cubemap-broken-full-compressed-image-query"))
getFullCompressedCubeImageImplementation = &CubeMapTexture::getCompressedImageImplementationDSASingleSliceWorkaround;
else
getFullCompressedCubeImageImplementation = &CubeMapTexture::getCompressedImageImplementationDSA;
#endif
/* Texture storage implementation for desktop and ES */
#ifndef MAGNUM_TARGET_WEBGL
#ifndef MAGNUM_TARGET_GLES
if(context.isExtensionSupported<Extensions::GL::ARB::texture_storage>())
#elif defined(MAGNUM_TARGET_GLES2)
if(context.isExtensionSupported<Extensions::GL::EXT::texture_storage>())
#endif
{
#ifndef MAGNUM_TARGET_GLES
extensions.emplace_back(Extensions::GL::ARB::texture_storage::string());
#elif defined(MAGNUM_TARGET_GLES2)
extensions.push_back(Extensions::GL::EXT::texture_storage::string());
#endif
#ifndef MAGNUM_TARGET_GLES
if(context.isExtensionSupported<Extensions::GL::ARB::direct_state_access>()) {
storage1DImplementation = &AbstractTexture::storageImplementationDSA;
storage2DImplementation = &AbstractTexture::storageImplementationDSA;
storage3DImplementation = &AbstractTexture::storageImplementationDSA;
} else if(context.isExtensionSupported<Extensions::GL::EXT::direct_state_access>()) {
storage1DImplementation = &AbstractTexture::storageImplementationDSAEXT;
storage2DImplementation = &AbstractTexture::storageImplementationDSAEXT;
storage3DImplementation = &AbstractTexture::storageImplementationDSAEXT;
} else
#endif
{
#ifndef MAGNUM_TARGET_GLES
storage1DImplementation = &AbstractTexture::storageImplementationDefault;
#endif
storage2DImplementation = &AbstractTexture::storageImplementationDefault;
storage3DImplementation = &AbstractTexture::storageImplementationDefault;
}
}
#if !defined(MAGNUM_TARGET_GLES) || defined(MAGNUM_TARGET_GLES2)
else {
#ifndef MAGNUM_TARGET_GLES
storage1DImplementation = &AbstractTexture::storageImplementationFallback;
#endif
storage2DImplementation = &AbstractTexture::storageImplementationFallback;
storage3DImplementation = &AbstractTexture::storageImplementationFallback;
}
#endif
/* Texture storage implementation for WebGL 1.0 */
#elif defined(MAGNUM_TARGET_GLES2)
storage2DImplementation = &AbstractTexture::storageImplementationFallback;
/* Texture storage implementation for WebGL 2.0 */
#else
storage2DImplementation = &AbstractTexture::storageImplementationDefault;
storage3DImplementation = &AbstractTexture::storageImplementationDefault;
#endif
#ifndef MAGNUM_TARGET_GLES
/* Storage implementation for multisample textures. The fallback doesn't
have DSA alternative, so it must be handled specially. */
if(context.isExtensionSupported<Extensions::GL::ARB::texture_storage_multisample>()) {
extensions.emplace_back(Extensions::GL::ARB::texture_storage_multisample::string());
if(context.isExtensionSupported<Extensions::GL::ARB::direct_state_access>()) {
storage2DMultisampleImplementation = &AbstractTexture::storageMultisampleImplementationDSA;
storage3DMultisampleImplementation = &AbstractTexture::storageMultisampleImplementationDSA;
} else if(context.isExtensionSupported<Extensions::GL::EXT::direct_state_access>()) {
storage2DMultisampleImplementation = &AbstractTexture::storageMultisampleImplementationDSAEXT;
storage3DMultisampleImplementation = &AbstractTexture::storageMultisampleImplementationDSAEXT;
} else {
storage2DMultisampleImplementation = &AbstractTexture::storageMultisampleImplementationDefault;
storage3DMultisampleImplementation = &AbstractTexture::storageMultisampleImplementationDefault;
}
} else {
storage2DMultisampleImplementation = &AbstractTexture::storageMultisampleImplementationFallback;
storage3DMultisampleImplementation = &AbstractTexture::storageMultisampleImplementationFallback;
}
#elif !defined(MAGNUM_TARGET_GLES2) && !defined(MAGNUM_TARGET_WEBGL)
storage2DMultisampleImplementation = &AbstractTexture::storageMultisampleImplementationDefault;
if(context.isVersionSupported(Version::GLES320))
storage3DMultisampleImplementation = &AbstractTexture::storageMultisampleImplementationDefault;
else if(context.isExtensionSupported<Extensions::GL::OES::texture_storage_multisample_2d_array>())
storage3DMultisampleImplementation = &AbstractTexture::storageMultisampleImplementationOES;
else
storage3DMultisampleImplementation = nullptr;
#endif
/* Anisotropic filter implementation */
if(context.isExtensionSupported<Extensions::GL::EXT::texture_filter_anisotropic>()) {
extensions.emplace_back(Extensions::GL::EXT::texture_filter_anisotropic::string());
setMaxAnisotropyImplementation = &AbstractTexture::setMaxAnisotropyImplementationExt;
} else setMaxAnisotropyImplementation = &AbstractTexture::setMaxAnisotropyImplementationNoOp;
#ifndef MAGNUM_TARGET_GLES
/* NVidia workaround for compressed block data size implementation */
if((context.detectedDriver() & Context::DetectedDriver::NVidia) &&
!context.isDriverWorkaroundDisabled("nv-compressed-block-size-in-bits"))
compressedBlockDataSizeImplementation = &AbstractTexture::compressedBlockDataSizeImplementationBitsWorkaround;
else
compressedBlockDataSizeImplementation = &AbstractTexture::compressedBlockDataSizeImplementationDefault;
#endif
#ifndef MAGNUM_TARGET_WEBGL
/* SVGA3D workaround for array / 3D / cube map texture upload. Overrides
the DSA / non-DSA function pointers set above. */
if((context.detectedDriver() & Context::DetectedDriver::Svga3D) &&
!context.isDriverWorkaroundDisabled("svga3d-texture-upload-slice-by-slice")) {
#ifndef MAGNUM_TARGET_GLES
image2DImplementation = &AbstractTexture::imageImplementationSvga3DSliceBySlice;
#endif
image3DImplementation = &AbstractTexture::imageImplementationSvga3DSliceBySlice;
#ifndef MAGNUM_TARGET_GLES
if(context.isExtensionSupported<Extensions::GL::ARB::direct_state_access>()) {
#ifndef MAGNUM_TARGET_GLES
subImage2DImplementation = &AbstractTexture::subImageImplementationSvga3DSliceBySlice<&AbstractTexture::subImage2DImplementationDSA>;
#endif
subImage3DImplementation = &AbstractTexture::subImageImplementationSvga3DSliceBySlice<&AbstractTexture::subImage3DImplementationDSA>;
cubeSubImage3DImplementation = &CubeMapTexture::subImageImplementationSvga3DSliceBySlice;
} else
#endif
{
#ifndef MAGNUM_TARGET_GLES
subImage2DImplementation = &AbstractTexture::subImageImplementationSvga3DSliceBySlice<&AbstractTexture::subImage2DImplementationDefault>;
#endif
subImage3DImplementation = &AbstractTexture::subImageImplementationSvga3DSliceBySlice<&AbstractTexture::subImage3DImplementationDefault>;
#ifndef MAGNUM_TARGET_GLES
cubeSubImage3DImplementation = nullptr;
#endif
}
} else
#endif
{
/* These need to be set up in any case */
image2DImplementation = &AbstractTexture::imageImplementationDefault;
#if !(defined(MAGNUM_TARGET_WEBGL) && defined(MAGNUM_TARGET_GLES2))
image3DImplementation = &AbstractTexture::imageImplementationDefault;
#endif
/* The other subImage implementations were set already above */
#ifndef MAGNUM_TARGET_GLES
cubeSubImage3DImplementation = &CubeMapTexture::subImageImplementationDefault;
#endif
}
/* Allocate texture bindings array to hold all possible texture units */
glGetIntegerv(GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS, &maxTextureUnits);
CORRADE_INTERNAL_ASSERT(maxTextureUnits > 0);
bindings = Containers::Array<std::pair<GLenum, GLuint>>{Containers::ValueInit, std::size_t(maxTextureUnits)};
#if !defined(MAGNUM_TARGET_GLES2) && !defined(MAGNUM_TARGET_WEBGL)
/* Allocate image bindings array to hold all possible image units */
#ifndef MAGNUM_TARGET_GLES
if(context.isExtensionSupported<Extensions::GL::ARB::shader_image_load_store>())
#else
if(context.isVersionSupported(Version::GLES310))
#endif
{
GLint maxImageUnits;
glGetIntegerv(GL_MAX_IMAGE_UNITS, &maxImageUnits);
imageBindings = Containers::Array<std::tuple<GLuint, GLint, GLboolean, GLint, GLenum>>{Containers::ValueInit, std::size_t(maxImageUnits)};
}
#endif
}
TextureState::~TextureState() = default;
void TextureState::reset() {
std::fill_n(bindings.begin(), bindings.size(), std::pair<GLenum, GLuint>{{}, State::DisengagedBinding});
#if !defined(MAGNUM_TARGET_GLES2) && !defined(MAGNUM_TARGET_WEBGL)
std::fill_n(imageBindings.begin(), imageBindings.size(), std::tuple<GLuint, GLint, GLboolean, GLint, GLenum>{State::DisengagedBinding, 0, false, 0, 0});
#endif
}
}}