kc3-lang/angle/src/compiler/translator/tree_ops/RewriteCubeMapSamplersAs2DArray.h

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• Hash : 83a369bb
  Author :
  Date : 2019-08-14T10:39:34
  

  Vulkan: Improve cubemap emulation seam handling
  
  Changes seamful cubemap emulation to always compute the derivative,
  emulating the bias parameter by scaling the provided derivatives.
  This results in more accurate mipmap levels for seams within primitives.
  There are some artifacts as a result of how derivatives are calculated,
  but this matches the native driver.
  
  Bug: angleproject:3243
  Bug: angleproject:3732
  Change-Id: Icb976e2a7e14cb4210645571edc037d4e607bd0d
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1754383
  Commit-Queue: James Dong <dongja@google.com>
  Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
  

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• src/compiler/translator/tree_ops/RewriteCubeMapSamplersAs2DArray.h

• //
  // Copyright 2019 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.
  //
  // RewriteCubeMapSamplersAs2DArray: Change samplerCube samplers to sampler2DArray, and the
  // textureCube* function calls to calls to helper functions that select the cube map face and sample
  // from the face as a 2D texture.  This emulates seamful cube map sampling in ES2 (or desktop GL 2)
  // and therefore only looks at samplerCube (i.e. not integer variants or cube arrays) and sampling
  // functions that are defined in ES GLSL 1.0 (i.e. not the cube overload of texture()).
  
  #ifndef COMPILER_TRANSLATOR_TREEOPS_REWRITECUBEMAPSAMPLERSAS2DARRAY_H_
  #define COMPILER_TRANSLATOR_TREEOPS_REWRITECUBEMAPSAMPLERSAS2DARRAY_H_
  
  #include "common/angleutils.h"
  
  namespace sh
  {
  class TCompiler;
  class TIntermBlock;
  class TSymbolTable;
  
  ANGLE_NO_DISCARD bool RewriteCubeMapSamplersAs2DArray(TCompiler *compiler,
                                                        TIntermBlock *root,
                                                        TSymbolTable *symbolTable,
                                                        bool isFragmentShader);
  }  // namespace sh
  
  #endif  // COMPILER_TRANSLATOR_TREEOPS_REWRITECUBEMAPSAMPLERSAS2DARRAY_H_
  

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