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

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• Hash : 6f0a0dca
  Author :
  Date : 2016-09-27T13:51:29
  

  Workaround isnan() on Intel drivers
  
  On some Intel drivers, calling function isnan() on highp float will get wrong
  answer. This patch work arounds this bug by using an expression to emulate
  this function.
  
  BUG=chromium:650547
  
  Change-Id: I5bc5e0352c434f42cd2c55103a74f9f7ba51a72c
  Reviewed-on: https://chromium-review.googlesource.com/389834
  Commit-Queue: Corentin Wallez <cwallez@chromium.org>
  Reviewed-by: Corentin Wallez <cwallez@chromium.org>
  

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• src/compiler/translator/BuiltInFunctionEmulatorGLSL.h

• //
  // Copyright (c) 2011 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.
  //
  
  #ifndef COMPILER_TRANSLATOR_BUILTINFUNCTIONEMULATORGLSL_H_
  #define COMPILER_TRANSLATOR_BUILTINFUNCTIONEMULATORGLSL_H_
  
  #include "GLSLANG/ShaderLang.h"
  
  class BuiltInFunctionEmulator;
  
  //
  // This works around bug in Intel Mac drivers.
  //
  void InitBuiltInAbsFunctionEmulatorForGLSLWorkarounds(BuiltInFunctionEmulator *emu,
                                                        sh::GLenum shaderType);
  
  //
  // This works around isnan() bug in Intel Mac drivers
  //
  void InitBuiltInIsnanFunctionEmulatorForGLSLWorkarounds(BuiltInFunctionEmulator *emu,
                                                          int targetGLSLVersion);
  
  //
  // This function is emulating built-in functions missing from GLSL 1.30 and higher.
  //
  void InitBuiltInFunctionEmulatorForGLSLMissingFunctions(BuiltInFunctionEmulator *emu, sh::GLenum shaderType,
                                                          int targetGLSLVersion);
  
  #endif  // COMPILER_TRANSLATOR_BUILTINFUNCTIONEMULATORGLSL_H_
  

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