kc3-lang/angle/src/compiler/translator/OutputVulkanGLSL.h

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• Hash : cd31f286
  Author :
  Date : 2019-06-25T14:22:41
  

  Implement Draw base vertex and base instance functions
  
  This patch implements functionality of  glDrawArraysInstancedBaseInstanceANGLE,
  glDrawElementsInstancedBaseVertexBaseInstanceANGLE,
  glMultiDrawArraysInstancedBaseInstanceANGLE,
  and glMultiDrawElementsInstancedBaseVertexBaseInstanceANGLE
  
  Workaround for OpenGL driver on Mac:
  gl_VertexID on Mac with AMD GPU doesn't include baseVertex value.
  So replace gl_VertexID with (gl_VertexID + angle_BaseVertex) if any.
  
  Workaround for Vulkan GLSL:
  gl_InstanceIndex on Vulkan includes baseInstance. So replace
  gl_InstanceIndex with (gl_InstanceIndex - angle_BaseInstance) when
  angle_BaseInstance is declared.
  
  Bug: chromium:891861, angleproject:3402
  Change-Id: Ia1d94b5d4d7da7e635468c05c962c4f7eb1b1919
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1750126
  Commit-Queue: Shrek Shao <shrekshao@google.com>
  Reviewed-by: Jamie Madill <jmadill@chromium.org>
  

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• src/compiler/translator/OutputVulkanGLSL.h

• //
  // Copyright 2016 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.
  //
  // OutputVulkanGLSL:
  //   Code that outputs shaders that fit GL_KHR_vulkan_glsl.
  //   The shaders are then fed into glslang to spit out SPIR-V (libANGLE-side).
  //   See: https://www.khronos.org/registry/vulkan/specs/misc/GL_KHR_vulkan_glsl.txt
  //
  
  #include "compiler/translator/OutputGLSL.h"
  
  namespace sh
  {
  
  class TOutputVulkanGLSL : public TOutputGLSL
  {
    public:
      TOutputVulkanGLSL(TInfoSinkBase &objSink,
                        ShArrayIndexClampingStrategy clampingStrategy,
                        ShHashFunction64 hashFunction,
                        NameMap &nameMap,
                        TSymbolTable *symbolTable,
                        sh::GLenum shaderType,
                        int shaderVersion,
                        ShShaderOutput output,
                        ShCompileOptions compileOptions);
  
      void writeStructType(const TStructure *structure);
  
    protected:
      void writeLayoutQualifier(TIntermTyped *variable) override;
      void writeFieldLayoutQualifier(const TField *field) override;
      void writeQualifier(TQualifier qualifier, const TType &type, const TSymbol *symbol) override;
      void writeVariableType(const TType &type, const TSymbol *symbol) override;
  };
  
  }  // namespace sh
  

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