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

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• Hash : 095d7c0a
  Author :
  Date : 2022-01-06T01:20:53
  

  Translator: Clean up spec const / driver uniform types
  
  Bug: angleproject:6755
  Change-Id: I8fb1557a5e29fcc28d5cb2f3aaa2c4a14b72583d
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3369125
  Reviewed-by: Tim Van Patten <timvp@google.com>
  Commit-Queue: Tim Van Patten <timvp@google.com>
  

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• src/compiler/translator/DriverUniformMetal.cpp

• //
  // 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.
  //
  // DriverUniformMetal:
  //   Struct defining the default driver uniforms for direct and SpirV based ANGLE translation
  //
  
  #include "compiler/translator/DriverUniformMetal.h"
  #include "compiler/translator/tree_util/BuiltIn.h"
  #include "compiler/translator/tree_util/DriverUniform.h"
  #include "compiler/translator/tree_util/IntermNode_util.h"
  
  namespace sh
  {
  
  namespace
  {
  
  // Metal specific driver uniforms
  constexpr const char kHalfRenderArea[]     = "halfRenderArea";
  constexpr const char kFlipXY[]             = "flipXY";
  constexpr const char kNegFlipXY[]          = "negFlipXY";
  constexpr const char kEmulatedInstanceID[] = "emulatedInstanceID";
  constexpr const char kCoverageMask[]       = "coverageMask";
  
  }  // namespace
  
  // class DriverUniformMetal
  // The fields here must match the DriverUniforms structure defined in ContextMtl.h.
  TFieldList *DriverUniformMetal::createUniformFields(TSymbolTable *symbolTable)
  {
      TFieldList *driverFieldList = DriverUniform::createUniformFields(symbolTable);
  
      constexpr size_t kNumGraphicsDriverUniformsMetal = 5;
      constexpr std::array<const char *, kNumGraphicsDriverUniformsMetal>
          kGraphicsDriverUniformNamesMetal = {
              {kHalfRenderArea, kFlipXY, kNegFlipXY, kEmulatedInstanceID, kCoverageMask}};
  
      const std::array<TType *, kNumGraphicsDriverUniformsMetal> kDriverUniformTypesMetal = {{
          new TType(EbtFloat, EbpHigh, EvqGlobal, 2),  // halfRenderArea
          new TType(EbtFloat, EbpLow, EvqGlobal, 2),   // flipXY
          new TType(EbtFloat, EbpLow, EvqGlobal, 2),   // negFlipXY
          new TType(EbtUInt, EbpHigh,
                    EvqGlobal),  // kEmulatedInstanceID - unused in SPIR-V Metal compiler
          new TType(EbtUInt, EbpHigh, EvqGlobal),  // kCoverageMask
      }};
  
      for (size_t uniformIndex = 0; uniformIndex < kNumGraphicsDriverUniformsMetal; ++uniformIndex)
      {
          TField *driverUniformField =
              new TField(kDriverUniformTypesMetal[uniformIndex],
                         ImmutableString(kGraphicsDriverUniformNamesMetal[uniformIndex]),
                         TSourceLoc(), SymbolType::AngleInternal);
          driverFieldList->push_back(driverUniformField);
      }
  
      return driverFieldList;
  }
  
  TIntermTyped *DriverUniformMetal::getHalfRenderAreaRef() const
  {
      return createDriverUniformRef(kHalfRenderArea);
  }
  
  TIntermTyped *DriverUniformMetal::getFlipXYRef() const
  {
      return createDriverUniformRef(kFlipXY);
  }
  
  TIntermTyped *DriverUniformMetal::getNegFlipXYRef() const
  {
      return createDriverUniformRef(kNegFlipXY);
  }
  
  TIntermTyped *DriverUniformMetal::getNegFlipYRef() const
  {
      // Create a swizzle to "negFlipXY.y"
      TIntermTyped *negFlipXY     = createDriverUniformRef(kNegFlipXY);
      TVector<int> swizzleOffsetY = {1};
      TIntermSwizzle *negFlipY    = new TIntermSwizzle(negFlipXY, swizzleOffsetY);
      return negFlipY;
  }
  
  TIntermTyped *DriverUniformMetal::getCoverageMaskFieldRef() const
  {
      return createDriverUniformRef(kCoverageMask);
  }
  
  }  // namespace sh
  

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