kc3-lang/angle/src/compiler/translator/tree_ops/vulkan/EmulateAdvancedBlendEquations.h

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• Hash : 9070e279
  Author :
  Date : 2022-06-30T09:35:59
  

  Vulkan: Handle platforms that have imprecise float division issues
  
  Even when the dividend and divisor have the same value
  some platforms do not return 1.0f. We need to emit sepcial
  division code on such platforms.
  
  Bug: angleproject:3586
  Tests: KHR-GLES31.core.blend_equation_advanced.blend*HSL*
  Change-Id: Ibb81f57c959ae2c8edb6d361bf6241c019dfb988
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3738439
  Reviewed-by: Charlie Lao <cclao@google.com>
  Commit-Queue: mohan maiya <m.maiya@samsung.com>
  Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
  

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• src/compiler/translator/tree_ops/vulkan/EmulateAdvancedBlendEquations.h

• //
  // Copyright 2022 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.
  //
  // EmulateAdvancedBlendEquations.h: Emulate advanced blend equations by implicitly reading back from
  // the color attachment (as an input attachment) and apply the equation function based on a uniform.
  //
  
  #ifndef COMPILER_TRANSLATOR_TREEOPS_VULKAN_EMULATEADVANCEDBLENDEQUATIONS_H_
  #define COMPILER_TRANSLATOR_TREEOPS_VULKAN_EMULATEADVANCEDBLENDEQUATIONS_H_
  
  #include "common/angleutils.h"
  #include "compiler/translator/Compiler.h"
  
  namespace sh
  {
  
  class TCompiler;
  class TIntermBlock;
  class TSymbolTable;
  class DriverUniform;
  struct ShaderVariable;
  class AdvancedBlendEquations;
  
  // Declares the necessary input attachment (if not already for framebuffer fetch), loads from it and
  // implements the specified advanced blend equation functions.  A driver uniform is used to select
  // which function to use at runtime.
  [[nodiscard]] bool EmulateAdvancedBlendEquations(
      TCompiler *compiler,
      ShCompileOptions compileOptions,
      TIntermBlock *root,
      TSymbolTable *symbolTable,
      const DriverUniform *driverUniforms,
      std::vector<ShaderVariable> *uniforms,
      const AdvancedBlendEquations &advancedBlendEquations);
  
  }  // namespace sh
  
  #endif  // COMPILER_TRANSLATOR_TREEOPS_VULKAN_EMULATEADVANCEDBLENDEQUATIONS_H_
  

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