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/*
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This file is part of Magnum.
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Copyright © 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
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Vladimír Vondruš <mosra@centrum.cz>
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Permission is hereby granted, free of charge, to any person obtaining a
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copy of this software and associated documentation files (the "Software"),
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to deal in the Software without restriction, including without limitation
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the rights to use, copy, modify, merge, publish, distribute, sublicense,
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and/or sell copies of the Software, and to permit persons to whom the
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Software is furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included
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in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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DEALINGS IN THE SOFTWARE.
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*/
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#include "FramebufferState.h"
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#include "Magnum/GL/Context.h"
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#include "Magnum/GL/Extensions.h"
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#include "Magnum/GL/Renderbuffer.h"
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#include "State.h"
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namespace Magnum { namespace GL { namespace Implementation {
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constexpr const Range2Di FramebufferState::DisengagedViewport;
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FramebufferState::FramebufferState(Context& context, std::vector<std::string>& extensions): readBinding{0}, drawBinding{0}, renderbufferBinding{0}, maxDrawBuffers{0}, maxColorAttachments{0}, maxRenderbufferSize{0},
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#if !(defined(MAGNUM_TARGET_WEBGL) && defined(MAGNUM_TARGET_GLES2))
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maxSamples{0},
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#endif
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#ifndef MAGNUM_TARGET_GLES
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maxDualSourceDrawBuffers{0},
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#endif
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viewport{DisengagedViewport}
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{
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/* Create implementation */
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#ifndef MAGNUM_TARGET_GLES
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if(context.isExtensionSupported<Extensions::ARB::direct_state_access>()) {
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extensions.emplace_back(Extensions::ARB::direct_state_access::string());
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createImplementation = &Framebuffer::createImplementationDSA;
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createRenderbufferImplementation = &Renderbuffer::createImplementationDSA;
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} else
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#endif
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{
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createImplementation = &Framebuffer::createImplementationDefault;
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createRenderbufferImplementation = &Renderbuffer::createImplementationDefault;
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}
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/* DSA/non-DSA implementation */
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#ifndef MAGNUM_TARGET_GLES
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if(context.isExtensionSupported<Extensions::ARB::direct_state_access>()) {
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/* Extension added above */
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checkStatusImplementation = &AbstractFramebuffer::checkStatusImplementationDSA;
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clearIImplementation = &AbstractFramebuffer::clearImplementationDSA;
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clearUIImplementation = &AbstractFramebuffer::clearImplementationDSA;
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clearFImplementation = &AbstractFramebuffer::clearImplementationDSA;
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clearFIImplementation = &AbstractFramebuffer::clearImplementationDSA;
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drawBuffersImplementation = &AbstractFramebuffer::drawBuffersImplementationDSA;
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drawBufferImplementation = &AbstractFramebuffer::drawBufferImplementationDSA;
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readBufferImplementation = &AbstractFramebuffer::readBufferImplementationDSA;
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copySub1DImplementation = &AbstractFramebuffer::copySub1DImplementationDSA;
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copySub2DImplementation = &AbstractFramebuffer::copySub2DImplementationDSA;
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copySubCubeMapImplementation = &AbstractFramebuffer::copySubCubeMapImplementationDSA;
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copySub3DImplementation = &AbstractFramebuffer::copySub3DImplementationDSA;
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renderbufferImplementation = &Framebuffer::renderbufferImplementationDSA;
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/* The 1D implementation uses the same function as the layered attachment */
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texture1DImplementation = &Framebuffer::textureImplementationDSA;
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/* DSA doesn't have texture target parameter so we need to use different
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function to specify cube map face */
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texture2DImplementation = &Framebuffer::texture2DImplementationDSA;
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textureImplementation = &Framebuffer::textureImplementationDSA;
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textureCubeMapImplementation = &Framebuffer::textureCubeMapImplementationDSA;
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textureLayerImplementation = &Framebuffer::textureLayerImplementationDSA;
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renderbufferStorageImplementation = &Renderbuffer::storageImplementationDSA;
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} else if(context.isExtensionSupported<Extensions::EXT::direct_state_access>()) {
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extensions.emplace_back(Extensions::EXT::direct_state_access::string());
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checkStatusImplementation = &AbstractFramebuffer::checkStatusImplementationDSAEXT;
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/* I don't bother with EXT_DSA anymore */
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clearIImplementation = &AbstractFramebuffer::clearImplementationDefault;
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clearUIImplementation = &AbstractFramebuffer::clearImplementationDefault;
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clearFImplementation = &AbstractFramebuffer::clearImplementationDefault;
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clearFIImplementation = &AbstractFramebuffer::clearImplementationDefault;
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drawBuffersImplementation = &AbstractFramebuffer::drawBuffersImplementationDSAEXT;
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drawBufferImplementation = &AbstractFramebuffer::drawBufferImplementationDSAEXT;
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readBufferImplementation = &AbstractFramebuffer::readBufferImplementationDSAEXT;
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copySub1DImplementation = &AbstractFramebuffer::copySub1DImplementationDSAEXT;
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copySub2DImplementation = &AbstractFramebuffer::copySub2DImplementationDSAEXT;
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copySubCubeMapImplementation = &AbstractFramebuffer::copySub2DImplementationDSAEXT;
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copySub3DImplementation = &AbstractFramebuffer::copySub3DImplementationDSAEXT;
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renderbufferImplementation = &Framebuffer::renderbufferImplementationDSAEXT;
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texture1DImplementation = &Framebuffer::texture1DImplementationDSAEXT;
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/* The EXT_DSA implementation is the same for both 2D and cube map textures */
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texture2DImplementation = &Framebuffer::texture2DImplementationDSAEXT;
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textureImplementation = &Framebuffer::textureImplementationDSAEXT;
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textureCubeMapImplementation = &Framebuffer::texture2DImplementationDSAEXT;
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textureLayerImplementation = &Framebuffer::textureLayerImplementationDSAEXT;
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renderbufferStorageImplementation = &Renderbuffer::storageImplementationDSAEXT;
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} else
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#endif
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{
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checkStatusImplementation = &AbstractFramebuffer::checkStatusImplementationDefault;
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#ifndef MAGNUM_TARGET_GLES2
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clearIImplementation = &AbstractFramebuffer::clearImplementationDefault;
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clearUIImplementation = &AbstractFramebuffer::clearImplementationDefault;
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clearFImplementation = &AbstractFramebuffer::clearImplementationDefault;
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clearFIImplementation = &AbstractFramebuffer::clearImplementationDefault;
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#endif
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#ifndef MAGNUM_TARGET_GLES2
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drawBuffersImplementation = &AbstractFramebuffer::drawBuffersImplementationDefault;
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#endif
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#ifndef MAGNUM_TARGET_GLES
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drawBufferImplementation = &AbstractFramebuffer::drawBufferImplementationDefault;
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#endif
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#if !(defined(MAGNUM_TARGET_WEBGL) && defined(MAGNUM_TARGET_GLES2))
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readBufferImplementation = &AbstractFramebuffer::readBufferImplementationDefault;
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#endif
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#ifndef MAGNUM_TARGET_GLES
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copySub1DImplementation = &AbstractFramebuffer::copySub1DImplementationDefault;
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#endif
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copySub2DImplementation = &AbstractFramebuffer::copySub2DImplementationDefault;
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copySubCubeMapImplementation = &AbstractFramebuffer::copySub2DImplementationDefault;
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#if !(defined(MAGNUM_TARGET_WEBGL) && defined(MAGNUM_TARGET_GLES2))
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copySub3DImplementation = &AbstractFramebuffer::copySub3DImplementationDefault;
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#endif
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renderbufferImplementation = &Framebuffer::renderbufferImplementationDefault;
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#ifndef MAGNUM_TARGET_GLES
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texture1DImplementation = &Framebuffer::texture1DImplementationDefault;
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#endif
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/* The default implementation is the same for both 2D and cube map textures */
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texture2DImplementation = &Framebuffer::texture2DImplementationDefault;
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#ifndef MAGNUM_TARGET_GLES
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textureImplementation = &Framebuffer::textureImplementationDefault;
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#endif
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textureCubeMapImplementation = &Framebuffer::texture2DImplementationDefault;
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#if !(defined(MAGNUM_TARGET_WEBGL) && defined(MAGNUM_TARGET_GLES2))
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textureLayerImplementation = &Framebuffer::textureLayerImplementationDefault;
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#endif
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renderbufferStorageImplementation = &Renderbuffer::storageImplementationDefault;
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}
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/* Framebuffer texture attachment on ES3 */
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#if defined(MAGNUM_TARGET_GLES) && !defined(MAGNUM_TARGET_WEBGL) && !defined(MAGNUM_TARGET_GLES2)
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if(context.isVersionSupported(Version::GLES320))
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textureImplementation = &Framebuffer::textureImplementationDefault;
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else if(context.isExtensionSupported<Extensions::EXT::geometry_shader>())
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textureImplementation = &Framebuffer::textureImplementationEXT;
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else
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textureImplementation = nullptr;
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#endif
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#ifdef MAGNUM_TARGET_GLES2
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/* Framebuffer binding and checking on ES2 */
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/* Optimistically set separate binding targets and check if one of the
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extensions providing them is available */
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#ifndef MAGNUM_TARGET_WEBGL
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bindImplementation = &Framebuffer::bindImplementationDefault;
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bindInternalImplementation = &Framebuffer::bindImplementationDefault;
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checkStatusImplementation = &Framebuffer::checkStatusImplementationDefault;
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if(context.isExtensionSupported<Extensions::ANGLE::framebuffer_blit>()) {
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extensions.push_back(Extensions::ANGLE::framebuffer_blit::string());
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} else if(context.isExtensionSupported<Extensions::APPLE::framebuffer_multisample>()) {
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extensions.push_back(Extensions::APPLE::framebuffer_multisample::string());
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} else if(context.isExtensionSupported<Extensions::NV::framebuffer_blit>()) {
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extensions.push_back(Extensions::NV::framebuffer_blit::string());
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/* NV_framebuffer_multisample requires NV_framebuffer_blit, which has these
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enums. However, on my system only NV_framebuffer_multisample is
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supported, but NV_framebuffer_blit isn't. I will hold my breath and
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assume these enums are available. */
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} else if(context.isExtensionSupported<Extensions::NV::framebuffer_multisample>()) {
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extensions.push_back(Extensions::NV::framebuffer_multisample::string());
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/* If no such extension is available, reset back to single target */
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} else {
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bindImplementation = &Framebuffer::bindImplementationSingle;
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bindInternalImplementation = &Framebuffer::bindImplementationSingle;
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checkStatusImplementation = &Framebuffer::checkStatusImplementationSingle;
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}
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#else
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checkStatusImplementation = &Framebuffer::checkStatusImplementationSingle;
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#endif
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#ifndef MAGNUM_TARGET_WEBGL
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/* Framebuffer draw mapping on ES2 */
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if(context.isExtensionSupported<Extensions::EXT::draw_buffers>()) {
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extensions.push_back(Extensions::EXT::draw_buffers::string());
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drawBuffersImplementation = &AbstractFramebuffer::drawBuffersImplementationEXT;
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} else if(context.isExtensionSupported<Extensions::NV::draw_buffers>()) {
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extensions.push_back(Extensions::NV::draw_buffers::string());
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drawBuffersImplementation = &AbstractFramebuffer::drawBuffersImplementationNV;
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} else drawBuffersImplementation = nullptr;
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#else
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if(context.isExtensionSupported<Extensions::WEBGL::draw_buffers>()) {
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extensions.push_back(Extensions::WEBGL::draw_buffers::string());
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/* The EXT implementation is exposed in Emscripten */
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drawBuffersImplementation = &AbstractFramebuffer::drawBuffersImplementationEXT;
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} else drawBuffersImplementation = nullptr;
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#endif
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#endif
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/* Implementation-specific color read format/type implementation */
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#ifndef MAGNUM_TARGET_GLES
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if(context.isExtensionSupported<Extensions::ARB::direct_state_access>() && context.isExtensionSupported<Extensions::ARB::ES3_1_compatibility>()) {
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#ifdef CORRADE_TARGET_WINDOWS
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if((context.detectedDriver() & Context::DetectedDriver::IntelWindows) &&
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!context.isDriverWorkaroundDisabled("intel-windows-implementation-color-read-format-completely-broken")) {
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implementationColorReadFormatTypeImplementation = &AbstractFramebuffer::implementationColorReadFormatTypeImplementationDefault;
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} else
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#endif
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{
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/* DSA extension added above */
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extensions.push_back(Extensions::ARB::ES3_1_compatibility::string());
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if((context.detectedDriver() & Context::DetectedDriver::NVidia) &&
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!context.isDriverWorkaroundDisabled("nv-implementation-color-read-format-dsa-broken")) {
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implementationColorReadFormatTypeImplementation = &AbstractFramebuffer::implementationColorReadFormatTypeImplementationES31;
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} else if((context.detectedDriver() & Context::DetectedDriver::Mesa) &&
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!context.isDriverWorkaroundDisabled("mesa-implementation-color-read-format-dsa-explicit-binding")) {
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implementationColorReadFormatTypeImplementation = &AbstractFramebuffer::implementationColorReadFormatTypeImplementationES31DSAMesa;
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} else {
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implementationColorReadFormatTypeImplementation = &AbstractFramebuffer::implementationColorReadFormatTypeImplementationES31DSA;
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}
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}
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} else
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#endif
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#if !defined(MAGNUM_TARGET_GLES2) && !defined(MAGNUM_TARGET_WEBGL)
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/* Checks for 3.1 on ES and for ARB_ES3_1_compatibility on desktop */
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if(context.isVersionSupported(Version::GLES310)) {
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#ifdef CORRADE_TARGET_WINDOWS
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if((context.detectedDriver() & Context::DetectedDriver::IntelWindows) &&
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!context.isDriverWorkaroundDisabled("intel-windows-implementation-color-read-format-completely-broken")) {
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implementationColorReadFormatTypeImplementation = &AbstractFramebuffer::implementationColorReadFormatTypeImplementationDefault;
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} else
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#endif
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{
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#ifndef MAGNUM_TARGET_GLES
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extensions.push_back(Extensions::ARB::ES3_1_compatibility::string());
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#endif
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implementationColorReadFormatTypeImplementation = &AbstractFramebuffer::implementationColorReadFormatTypeImplementationES31;
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}
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} else
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#endif
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{
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implementationColorReadFormatTypeImplementation = &AbstractFramebuffer::implementationColorReadFormatTypeImplementationDefault;
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}
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/* Framebuffer reading implementation in desktop/ES */
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#ifndef MAGNUM_TARGET_WEBGL
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#ifndef MAGNUM_TARGET_GLES
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if(context.isExtensionSupported<Extensions::ARB::robustness>())
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#else
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if(context.isExtensionSupported<Extensions::EXT::robustness>())
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#endif
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{
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#ifndef MAGNUM_TARGET_GLES
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extensions.emplace_back(Extensions::ARB::robustness::string());
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#else
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extensions.push_back(Extensions::EXT::robustness::string());
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#endif
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readImplementation = &AbstractFramebuffer::readImplementationRobustness;
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} else readImplementation = &AbstractFramebuffer::readImplementationDefault;
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/* Framebuffer reading in WebGL */
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#else
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readImplementation = &AbstractFramebuffer::readImplementationDefault;
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#endif
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/* Multisample renderbuffer storage implementation */
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#ifndef MAGNUM_TARGET_GLES
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if(context.isExtensionSupported<Extensions::ARB::direct_state_access>()) {
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/* Extension added above */
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renderbufferStorageMultisampleImplementation = &Renderbuffer::storageMultisampleImplementationDSA;
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} else if(context.isExtensionSupported<Extensions::EXT::direct_state_access>()) {
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/* Extension added above */
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renderbufferStorageMultisampleImplementation = &Renderbuffer::storageMultisampleImplementationDSAEXT;
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} else
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#endif
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{
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#if defined(MAGNUM_TARGET_GLES2) && !defined(MAGNUM_TARGET_WEBGL)
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if(context.isExtensionSupported<Extensions::ANGLE::framebuffer_multisample>()) {
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extensions.push_back(Extensions::ANGLE::framebuffer_multisample::string());
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renderbufferStorageMultisampleImplementation = &Renderbuffer::storageMultisampleImplementationANGLE;
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} else if (context.isExtensionSupported<Extensions::NV::framebuffer_multisample>()) {
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extensions.push_back(Extensions::NV::framebuffer_multisample::string());
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renderbufferStorageMultisampleImplementation = &Renderbuffer::storageMultisampleImplementationNV;
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} else renderbufferStorageMultisampleImplementation = nullptr;
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#elif !(defined(MAGNUM_TARGET_WEBGL) && defined(MAGNUM_TARGET_GLES2))
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renderbufferStorageMultisampleImplementation = &Renderbuffer::storageMultisampleImplementationDefault;
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#endif
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}
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/* Framebuffer invalidation implementation on desktop GL */
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#ifndef MAGNUM_TARGET_GLES
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if(context.isExtensionSupported<Extensions::ARB::invalidate_subdata>()) {
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extensions.emplace_back(Extensions::ARB::invalidate_subdata::string());
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if(context.isExtensionSupported<Extensions::ARB::direct_state_access>()) {
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/* Extension added above */
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invalidateImplementation = &AbstractFramebuffer::invalidateImplementationDSA;
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invalidateSubImplementation = &AbstractFramebuffer::invalidateImplementationDSA;
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} else {
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invalidateImplementation = &AbstractFramebuffer::invalidateImplementationDefault;
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invalidateSubImplementation = &AbstractFramebuffer::invalidateImplementationDefault;
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}
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} else {
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invalidateImplementation = &AbstractFramebuffer::invalidateImplementationNoOp;
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invalidateSubImplementation = &AbstractFramebuffer::invalidateImplementationNoOp;
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}
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/* Framebuffer invalidation implementation on ES2 */
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#elif defined(MAGNUM_TARGET_GLES2) && !defined(MAGNUM_TARGET_WEBGL)
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if(context.isExtensionSupported<Extensions::EXT::discard_framebuffer>()) {
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extensions.push_back(Extensions::EXT::discard_framebuffer::string());
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invalidateImplementation = &AbstractFramebuffer::invalidateImplementationDefault;
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} else {
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invalidateImplementation = &AbstractFramebuffer::invalidateImplementationNoOp;
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}
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/* Always available on ES3 */
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#elif !(defined(MAGNUM_TARGET_WEBGL) && defined(MAGNUM_TARGET_GLES2))
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invalidateImplementation = &AbstractFramebuffer::invalidateImplementationDefault;
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invalidateSubImplementation = &AbstractFramebuffer::invalidateImplementationDefault;
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#endif
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/* Blit implementation on desktop GL */
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#ifndef MAGNUM_TARGET_GLES
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if(context.isExtensionSupported<Extensions::ARB::direct_state_access>()) {
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/* Extension added above */
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blitImplementation = &AbstractFramebuffer::blitImplementationDSA;
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} else blitImplementation = &AbstractFramebuffer::blitImplementationDefault;
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/* Blit implementation on ES2 */
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#elif defined(MAGNUM_TARGET_GLES2) && !defined(MAGNUM_TARGET_WEBGL)
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if(context.isExtensionSupported<Extensions::ANGLE::framebuffer_blit>()) {
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extensions.push_back(Extensions::ANGLE::framebuffer_blit::string());
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blitImplementation = &AbstractFramebuffer::blitImplementationANGLE;
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} else if(context.isExtensionSupported<Extensions::NV::framebuffer_blit>()) {
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extensions.push_back(Extensions::NV::framebuffer_blit::string());
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blitImplementation = &AbstractFramebuffer::blitImplementationNV;
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} else blitImplementation = nullptr;
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/* Always available on ES3 and WebGL 2 */
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|
#elif !defined(MAGNUM_TARGET_GLES2)
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|
blitImplementation = &AbstractFramebuffer::blitImplementationDefault;
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|
#endif
|
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|
|
#if defined(MAGNUM_TARGET_WEBGL) && !defined(MAGNUM_TARGET_GLES2)
|
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|
|
static_cast<void>(context);
|
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|
|
static_cast<void>(extensions);
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|
|
#endif
|
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|
|
}
|
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|
|
void FramebufferState::reset() {
|
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|
|
readBinding = drawBinding = renderbufferBinding = State::DisengagedBinding;
|
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|
|
viewport = DisengagedViewport;
|
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|
|
}
|
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|
}}}
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