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

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• Author : Jamie Madill
  Date : 2018-07-10 11:10:31
  Hash : c0bb36cb
  Message : Vulkan: Add driver uniforms to shader. Bug: angleproject:2717 Change-Id: I542f3b0f2de21857d7fea0267f07d2d0eec78a8c Reviewed-on: https://chromium-review.googlesource.com/1131567 Reviewed-by: Geoff Lang <geofflang@chromium.org> Reviewed-by: Luc Ferron <lucferron@chromium.org> Commit-Queue: Jamie Madill <jmadill@chromium.org>

• src/compiler/translator/OutputVulkanGLSL.cpp

• //
  // Copyright (c) 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/OutputVulkanGLSL.h"
  
  #include "compiler/translator/Symbol.h"
  #include "compiler/translator/util.h"
  
  namespace sh
  {
  
  TOutputVulkanGLSL::TOutputVulkanGLSL(TInfoSinkBase &objSink,
                                       ShArrayIndexClampingStrategy clampingStrategy,
                                       ShHashFunction64 hashFunction,
                                       NameMap &nameMap,
                                       TSymbolTable *symbolTable,
                                       sh::GLenum shaderType,
                                       int shaderVersion,
                                       ShShaderOutput output,
                                       ShCompileOptions compileOptions)
      : TOutputGLSL(objSink,
                    clampingStrategy,
                    hashFunction,
                    nameMap,
                    symbolTable,
                    shaderType,
                    shaderVersion,
                    output,
                    compileOptions)
  {
  }
  
  // TODO(jmadill): This is not complete.
  void TOutputVulkanGLSL::writeLayoutQualifier(TIntermTyped *variable)
  {
      const TType &type = variable->getType();
  
      bool needsCustomLayout =
          (type.getQualifier() == EvqAttribute || type.getQualifier() == EvqFragmentOut ||
           type.getQualifier() == EvqVertexIn || IsVarying(type.getQualifier()) ||
           IsSampler(type.getBasicType()) || type.isInterfaceBlock());
  
      if (!NeedsToWriteLayoutQualifier(type) && !needsCustomLayout)
      {
          return;
      }
  
      TInfoSinkBase &out                      = objSink();
      const TLayoutQualifier &layoutQualifier = type.getLayoutQualifier();
  
      // This isn't super clean, but it gets the job done.
      // See corresponding code in GlslangWrapper.cpp.
      TIntermSymbol *symbol = variable->getAsSymbolNode();
      ASSERT(symbol);
  
      if (needsCustomLayout)
      {
          out << "@@ LAYOUT-" << symbol->getName() << " @@";
      }
      else
      {
          out << "layout(";
      }
  
      if (IsImage(type.getBasicType()) && layoutQualifier.imageInternalFormat != EiifUnspecified)
      {
          ASSERT(type.getQualifier() == EvqTemporary || type.getQualifier() == EvqUniform);
          out << getImageInternalFormatString(layoutQualifier.imageInternalFormat);
      }
  
      if (!needsCustomLayout)
      {
          out << ") ";
      }
  }
  
  void TOutputVulkanGLSL::writeQualifier(TQualifier qualifier, const TSymbol *symbol)
  {
      if (qualifier != EvqUniform && qualifier != EvqVaryingIn && qualifier != EvqVaryingOut &&
          qualifier != EvqAttribute)
      {
          TOutputGLSLBase::writeQualifier(qualifier, symbol);
          return;
      }
  
      if (symbol == nullptr)
      {
          return;
      }
  
      TInfoSinkBase &out = objSink();
      out << "@@ QUALIFIER-" << symbol->name().data() << " @@ ";
  }
  
  void TOutputVulkanGLSL::writeStructType(const TStructure *structure)
  {
      if (!structDeclared(structure))
      {
          declareStruct(structure);
          objSink() << ";\n";
      }
  }
  }  // namespace sh