OutputVulkanGLSL.h

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Author : shrekshao
Date : 2019-06-25 14:22:41
Hash : cd31f286
Message : 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>

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

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

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