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/*
This file is part of Magnum.
Copyright © 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019,
2020, 2021 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 <tuple>
#include <Corrade/Utility/Assert.h>
#include "Magnum/GL/AbstractTexture.h"
#include "Magnum/GL/CubeMapTexture.h"
#if !defined(MAGNUM_TARGET_GLES2) && !defined(MAGNUM_TARGET_WEBGL)
#include "Magnum/GL/BufferTexture.h"
#endif
#include "Magnum/GL/Context.h"
#include "Magnum/GL/Extensions.h"
#include "State.h"
namespace Magnum { namespace GL { 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::ARB::direct_state_access>()) {
extensions.emplace_back(Extensions::ARB::direct_state_access::string());
createImplementation = &AbstractTexture::createImplementationDSA;
} else
#endif
{
createImplementation = &AbstractTexture::createImplementationDefault;
}
/* Single bind implementation */
#ifndef MAGNUM_TARGET_GLES
if(context.isExtensionSupported<Extensions::ARB::direct_state_access>()) {
/* Extension name added below */
#ifdef CORRADE_TARGET_WINDOWS
if((context.detectedDriver() & Context::DetectedDriver::IntelWindows) &&
!context.isDriverWorkaroundDisabled("intel-windows-half-baked-dsa-texture-bind"))
{
unbindImplementation = &AbstractTexture::unbindImplementationDefault;
bindImplementation = &AbstractTexture::bindImplementationDSAIntelWindows;
} else
#endif
{
unbindImplementation = &AbstractTexture::unbindImplementationDSA;
bindImplementation = &AbstractTexture::bindImplementationDSA;
}
} else if(context.isExtensionSupported<Extensions::ARB::multi_bind>()) {
/* Extension name added below */
unbindImplementation = &AbstractTexture::unbindImplementationMulti;
bindImplementation = &AbstractTexture::bindImplementationMulti;
} else
#endif
{
unbindImplementation = &AbstractTexture::unbindImplementationDefault;
/* This is additionally modified below for the
apple-buffer-texture-unbind-on-buffer-modify workaround */
bindImplementation = &AbstractTexture::bindImplementationDefault;
}
/* Multi bind implementation */
#ifndef MAGNUM_TARGET_GLES
if(context.isExtensionSupported<Extensions::ARB::multi_bind>()) {
extensions.emplace_back(Extensions::ARB::multi_bind::string());
bindMultiImplementation = &AbstractTexture::bindImplementationMulti;
} else
#endif
{
bindMultiImplementation = &AbstractTexture::bindImplementationFallback;
}
/* DSA/non-DSA implementation */
#ifndef MAGNUM_TARGET_GLES
if(context.isExtensionSupported<Extensions::ARB::direct_state_access>()) {
extensions.emplace_back(Extensions::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;
} 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
}
/* DSA/non-DSA implementation for cubemaps, because Intel (and AMD) Windows
drivers have to be broken in a special way */
#ifndef MAGNUM_TARGET_GLES
if(context.isExtensionSupported<Extensions::ARB::direct_state_access>()) {
#ifdef CORRADE_TARGET_WINDOWS
if((context.detectedDriver() & Context::DetectedDriver::IntelWindows) && !context.isDriverWorkaroundDisabled("intel-windows-broken-dsa-for-cubemaps")) {
getCubeLevelParameterivImplementation = &CubeMapTexture::getLevelParameterImplementationDefault;
cubeSubImageImplementation = &CubeMapTexture::subImageImplementationDefault;
cubeCompressedSubImageImplementation = &CubeMapTexture::compressedSubImageImplementationDefault;
} else if((context.detectedDriver() & Context::DetectedDriver::Amd) && !context.isDriverWorkaroundDisabled("amd-windows-cubemap-image3d-slice-by-slice")) {
/* This one is not broken, but the others are */
getCubeLevelParameterivImplementation = &CubeMapTexture::getLevelParameterImplementationDSA;
cubeSubImageImplementation = &CubeMapTexture::subImageImplementationDefault;
cubeCompressedSubImageImplementation = &CubeMapTexture::compressedSubImageImplementationDefault;
} else
#endif
{
/* Extension name added above */
getCubeLevelParameterivImplementation = &CubeMapTexture::getLevelParameterImplementationDSA;
cubeSubImageImplementation = &CubeMapTexture::subImageImplementationDSA;
cubeCompressedSubImageImplementation = &CubeMapTexture::compressedSubImageImplementationDSA;
}
} else
#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::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::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::ARB::invalidate_subdata>()) {
extensions.emplace_back(Extensions::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::ARB::direct_state_access>())
getCubeLevelCompressedImageSizeImplementation = &CubeMapTexture::getLevelCompressedImageSizeImplementationDSANonImmutableWorkaround;
else getCubeLevelCompressedImageSizeImplementation = &CubeMapTexture::getLevelCompressedImageSizeImplementationDefaultImmutableWorkaround;
} else if(context.isExtensionSupported<Extensions::ARB::direct_state_access>()
#ifdef CORRADE_TARGET_WINDOWS
&& (!(context.detectedDriver() & Context::DetectedDriver::IntelWindows) ||
context.isDriverWorkaroundDisabled("intel-windows-broken-dsa-for-cubemaps"))
#endif
) {
getCubeLevelCompressedImageSizeImplementation = &CubeMapTexture::getLevelCompressedImageSizeImplementationDSA;
} else {
getCubeLevelCompressedImageSizeImplementation = &CubeMapTexture::getLevelCompressedImageSizeImplementationDefault;
}
/* Image retrieval implementation */
if(context.isExtensionSupported<Extensions::ARB::direct_state_access>()) {
/* Extension name added above */
getImageImplementation = &AbstractTexture::getImageImplementationDSA;
getCompressedImageImplementation = &AbstractTexture::getCompressedImageImplementationDSA;
} else if(context.isExtensionSupported<Extensions::ARB::robustness>()) {
extensions.emplace_back(Extensions::ARB::robustness::string());
getImageImplementation = &AbstractTexture::getImageImplementationRobustness;
getCompressedImageImplementation = &AbstractTexture::getCompressedImageImplementationRobustness;
} else {
getImageImplementation = &AbstractTexture::getImageImplementationDefault;
getCompressedImageImplementation = &AbstractTexture::getCompressedImageImplementationDefault;
}
/* Image retrieval implementation for cube map */
if(context.isExtensionSupported<Extensions::ARB::get_texture_sub_image>()) {
extensions.emplace_back(Extensions::ARB::get_texture_sub_image::string());
getCubeImageImplementation = &CubeMapTexture::getImageImplementationDSA;
getCompressedCubeImageImplementation = &CubeMapTexture::getCompressedImageImplementationDSA;
} else if(context.isExtensionSupported<Extensions::ARB::robustness>()) {
/* Extension name added above */
getCubeImageImplementation = &CubeMapTexture::getImageImplementationRobustness;
getCompressedCubeImageImplementation = &CubeMapTexture::getCompressedImageImplementationRobustness;
} 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::ARB::direct_state_access>() &&
!context.isDriverWorkaroundDisabled("nv-cubemap-broken-full-compressed-image-query"))
getFullCompressedCubeImageImplementation = &CubeMapTexture::getCompressedImageImplementationDSASingleSliceWorkaround;
else
getFullCompressedCubeImageImplementation = &CubeMapTexture::getCompressedImageImplementationDSA;
#ifdef CORRADE_TARGET_WINDOWS
/** @todo those *might* be happening with the proprietary AMD driver on
linux as well, test */
if((context.detectedDriver() & Context::DetectedDriver::Amd) &&
context.isExtensionSupported<Extensions::ARB::direct_state_access>() &&
!context.isDriverWorkaroundDisabled("amd-windows-cubemap-image3d-slice-by-slice"))
getFullCubeImageImplementation = &CubeMapTexture::getImageImplementationDSAAmdSliceBySlice;
else if((context.detectedDriver() & Context::DetectedDriver::IntelWindows) &&
context.isExtensionSupported<Extensions::ARB::direct_state_access>() &&
!context.isDriverWorkaroundDisabled("intel-windows-broken-dsa-for-cubemaps"))
getFullCubeImageImplementation = &CubeMapTexture::getImageImplementationSliceBySlice;
else
#endif
{
getFullCubeImageImplementation = &CubeMapTexture::getImageImplementationDSA;
}
#endif
/* Texture storage implementation for desktop and ES */
#ifndef MAGNUM_TARGET_WEBGL
#ifndef MAGNUM_TARGET_GLES
if(context.isExtensionSupported<Extensions::ARB::texture_storage>())
#elif defined(MAGNUM_TARGET_GLES2)
if(context.isExtensionSupported<Extensions::EXT::texture_storage>())
#endif
{
#ifndef MAGNUM_TARGET_GLES
extensions.emplace_back(Extensions::ARB::texture_storage::string());
#elif defined(MAGNUM_TARGET_GLES2)
extensions.push_back(Extensions::EXT::texture_storage::string());
#endif
#ifndef MAGNUM_TARGET_GLES
if(context.isExtensionSupported<Extensions::ARB::direct_state_access>()) {
storage1DImplementation = &AbstractTexture::storageImplementationDSA;
storage2DImplementation = &AbstractTexture::storageImplementationDSA;
storage3DImplementation = &AbstractTexture::storageImplementationDSA;
} 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::ARB::texture_storage_multisample>()) {
extensions.emplace_back(Extensions::ARB::texture_storage_multisample::string());
if(context.isExtensionSupported<Extensions::ARB::direct_state_access>()) {
storage2DMultisampleImplementation = &AbstractTexture::storageMultisampleImplementationDSA;
storage3DMultisampleImplementation = &AbstractTexture::storageMultisampleImplementationDSA;
} 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::OES::texture_storage_multisample_2d_array>())
storage3DMultisampleImplementation = &AbstractTexture::storageMultisampleImplementationOES;
else
storage3DMultisampleImplementation = nullptr;
#endif
/* Anisotropic filter implementation */
#ifndef MAGNUM_TARGET_GLES
if(context.isExtensionSupported<Extensions::EXT::texture_filter_anisotropic>()) {
extensions.emplace_back(Extensions::ARB::texture_filter_anisotropic::string());
setMaxAnisotropyImplementation = &AbstractTexture::setMaxAnisotropyImplementationArb;
} else
#endif
if(context.isExtensionSupported<Extensions::EXT::texture_filter_anisotropic>()) {
extensions.emplace_back(Extensions::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::ARB::direct_state_access>()) {
#ifndef MAGNUM_TARGET_GLES
subImage2DImplementation = &AbstractTexture::subImageImplementationSvga3DSliceBySlice<&AbstractTexture::subImage2DImplementationDSA>;
#endif
subImage3DImplementation = &AbstractTexture::subImageImplementationSvga3DSliceBySlice<&AbstractTexture::subImage3DImplementationDSA>;
} else
#endif
{
#ifndef MAGNUM_TARGET_GLES
subImage2DImplementation = &AbstractTexture::subImageImplementationSvga3DSliceBySlice<&AbstractTexture::subImage2DImplementationDefault>;
#endif
subImage3DImplementation = &AbstractTexture::subImageImplementationSvga3DSliceBySlice<&AbstractTexture::subImage3DImplementationDefault>;
}
} 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
}
#ifndef MAGNUM_TARGET_GLES
/* SVGA3D and Intel workaround for 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")) {
if(context.isExtensionSupported<Extensions::ARB::direct_state_access>()) {
cubeSubImage3DImplementation = &CubeMapTexture::subImageImplementationDSASliceBySlice;
} else {
cubeSubImage3DImplementation = &CubeMapTexture::subImageImplementationSliceBySlice;
}
} else if((context.detectedDriver() & Context::DetectedDriver::IntelWindows) &&
!context.isDriverWorkaroundDisabled("intel-windows-broken-dsa-for-cubemaps")) {
cubeSubImage3DImplementation = &CubeMapTexture::subImageImplementationSliceBySlice;
}
#ifdef CORRADE_TARGET_WINDOWS
/** @todo those *might* be happening with the proprietary AMD driver on
linux as well, test */
else if((context.detectedDriver() & Context::DetectedDriver::Amd) &&
!context.isDriverWorkaroundDisabled("amd-windows-cubemap-image3d-slice-by-slice")) {
/* DSA version is broken (non-zero Z offset not allowed), need to
emulate using classic APIs */
cubeSubImage3DImplementation = &CubeMapTexture::subImageImplementationSliceBySlice;
}
#endif
else if(context.isExtensionSupported<Extensions::ARB::direct_state_access>()) {
cubeSubImage3DImplementation = &CubeMapTexture::subImageImplementationDSA;
} else
{
cubeSubImage3DImplementation = &CubeMapTexture::subImageImplementationSliceBySlice;
}
#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(CORRADE_TARGET_APPLE) && !defined(MAGNUM_TARGET_GLES)
if(!context.isDriverWorkaroundDisabled("apple-buffer-texture-unbind-on-buffer-modify")) {
CORRADE_INTERNAL_ASSERT(std::size_t(maxTextureUnits) <= decltype(bufferTextureBound)::Size);
/* Assume ARB_multi_bind is not supported, otherwise we'd need to
implement the workaround also for bindMultiImplementation */
CORRADE_INTERNAL_ASSERT(!context.isExtensionSupported<Extensions::ARB::multi_bind>());
bindImplementation = &AbstractTexture::bindImplementationAppleBufferTextureWorkaround;
bindInternalImplementation = &AbstractTexture::bindImplementationAppleBufferTextureWorkaround;
} else
#endif
{
/* bindImplementation already set above */
bindInternalImplementation = &AbstractTexture::bindImplementationDefault;
}
#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::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
}
}}}