kc3-lang/angle/src/compiler/translator/tree_ops/FlagSamplersWithTexelFetch.h

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• Hash : 7bbe497a
  Author :
  Date : 2020-10-16T14:46:45
  

  Vulkan: Implement EXT_texture_sRGB_decode
  
  Implement EXT_texture_sRGB_decode. This builds on the existing
  functionality from EXT_texture_sRGB_override, with 2 major edge
  cases:
  1. sRGB_decode allows the texture state to be overridden by
  sampler state, which is implemented by forcing a a texture state
  sync during updateActiveTextures if a texture is bound to the same
  unit as a sampler with that state
  2. texelFetch calls require us to reenable decoding, regardless
  of decode state. We add a new compiler pass
  (FlagSamplersWithTexelFetch) to mark samplers that are used with
  texelFetch in order to support this.
  This change also re-enables EXT_texture_sRGB_R8, which was disabled
  due to a dEQP bug that this change will bypass.
  
  Bug: angleproject:3609
  Bug: angleproject:4503
  Test: dEQP.GLES31/functional_srgb_texture_decode_skip_decode_*
  Test: GLES31/functional_state_query_texture_*_srgb_decode_*
  Test: GLES31/functional_state_query_sampler_*_srgb_decode_*
  Test: GLES31/functional_debug_negative_coverage_*_srgb_decode_*
  Test: GLES31/functional_android_extension_pack_extensions_ext_texture_srgb_decode
  Test: angle_end2end_tests --gtest_filter=SRGBTextureTest.*Vulkan*
  Change-Id: I4a67e487dc82e2f57c8c87d4bcd8ef442b6fe220
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2359481
  Commit-Queue: Jamie Madill <jmadill@chromium.org>
  Reviewed-by: Jamie Madill <jmadill@chromium.org>
  Reviewed-by: Tim Van Patten <timvp@google.com>
  

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• src/compiler/translator/tree_ops/FlagSamplersWithTexelFetch.h

• //
  // Copyright 2020 The ANGLE Project Authors. All rights reserved.
  // Use of this source code is governed by a BSD-style license that can be
  // found in the LICENSE file.
  //
  // FlagSamplersForTexelFetch.h: finds all instances of texelFetch used with a static reference to a
  // sampler uniform, and flag that uniform as having been used with texelFetch
  //
  
  #ifndef COMPILER_TRANSLATOR_TREEOPS_FLAGSAMPLERSWITHTEXELFETCH_H_
  #define COMPILER_TRANSLATOR_TREEOPS_FLAGSAMPLERSWITHTEXELFETCH_H_
  
  #include "GLSLANG/ShaderVars.h"
  #include "common/angleutils.h"
  
  namespace sh
  {
  class TCompiler;
  class TIntermBlock;
  class TSymbolTable;
  
  // This flags all samplers which are statically accessed by a texelFetch invokation- that is, the
  // sampler is used as a direct argument to the call to texelFetch. Dynamic accesses, or accesses
  // with any amount of indirection, are not counted.
  ANGLE_NO_DISCARD bool FlagSamplersForTexelFetch(TCompiler *compiler,
                                                  TIntermBlock *root,
                                                  TSymbolTable *symbolTable,
                                                  std::vector<sh::ShaderVariable> *uniforms);
  }  // namespace sh
  
  #endif  // COMPILER_TRANSLATOR_TREEOPS_FLAGSAMPLERSWITHTEXELFETCH_H_
  

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