kc3-lang/angle/src/libANGLE/renderer/gl/ShaderGL.cpp

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• Hash : d73f852f
  Author :
  Date : 2017-01-13T17:48:57
  

  Reland "Replace gl::trace logging with Chromium style logging"
  
  Removing one usage of FormatString() and its static buffer.
  And preparation for Platform logging.
  
  Fix incorrect enabling of ERR() calls in UNIMPLEMENTED() and
  UNREACHABLE(), resulting in increased code size and
  <iostream> adding 5 static initializers to chrome because of
  cerr referenced in statically linked translator.
  
  BUG=angleproject:1660
  
  Change-Id: I7caa18036118d532e0544f75278602559172ae04
  Reviewed-on: https://chromium-review.googlesource.com/431457
  Reviewed-by: Jamie Madill <jmadill@chromium.org>
  Commit-Queue: Jamie Madill <jmadill@chromium.org>
  

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• src/libANGLE/renderer/gl/ShaderGL.cpp

• //
  // Copyright 2015 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.
  //
  
  // ShaderGL.cpp: Implements the class methods for ShaderGL.
  
  #include "libANGLE/renderer/gl/ShaderGL.h"
  
  #include "common/debug.h"
  #include "libANGLE/Compiler.h"
  #include "libANGLE/renderer/gl/FunctionsGL.h"
  #include "libANGLE/renderer/gl/RendererGL.h"
  #include "libANGLE/renderer/gl/WorkaroundsGL.h"
  
  #include <iostream>
  
  namespace rx
  {
  
  ShaderGL::ShaderGL(const gl::ShaderState &data,
                     const FunctionsGL *functions,
                     const WorkaroundsGL &workarounds)
      : ShaderImpl(data), mFunctions(functions), mWorkarounds(workarounds), mShaderID(0)
  {
      ASSERT(mFunctions);
  }
  
  ShaderGL::~ShaderGL()
  {
      if (mShaderID != 0)
      {
          mFunctions->deleteShader(mShaderID);
          mShaderID = 0;
      }
  }
  
  ShCompileOptions ShaderGL::prepareSourceAndReturnOptions(std::stringstream *sourceStream,
                                                           std::string * /*sourcePath*/)
  {
      // Reset the previous state
      if (mShaderID != 0)
      {
          mFunctions->deleteShader(mShaderID);
          mShaderID = 0;
      }
  
      *sourceStream << mData.getSource();
  
      ShCompileOptions options = SH_INIT_GL_POSITION;
  
      if (mWorkarounds.doWhileGLSLCausesGPUHang)
      {
          options |= SH_REWRITE_DO_WHILE_LOOPS;
      }
  
      if (mWorkarounds.emulateAbsIntFunction)
      {
          options |= SH_EMULATE_ABS_INT_FUNCTION;
      }
  
      if (mWorkarounds.addAndTrueToLoopCondition)
      {
          options |= SH_ADD_AND_TRUE_TO_LOOP_CONDITION;
      }
  
      if (mWorkarounds.emulateIsnanFloat)
      {
          options |= SH_EMULATE_ISNAN_FLOAT_FUNCTION;
      }
  
      if (mWorkarounds.emulateAtan2Float)
      {
          options |= SH_EMULATE_ATAN2_FLOAT_FUNCTION;
      }
  
      if (mWorkarounds.useUnusedBlocksWithStandardOrSharedLayout)
      {
          options |= SH_USE_UNUSED_STANDARD_SHARED_BLOCKS;
      }
  
      if (mWorkarounds.dontRemoveInvariantForFragmentInput)
      {
          options |= SH_DONT_REMOVE_INVARIANT_FOR_FRAGMENT_INPUT;
      }
  
      if (mWorkarounds.removeInvariantAndCentroidForESSL3)
      {
          options |= SH_REMOVE_INVARIANT_AND_CENTROID_FOR_ESSL3;
      }
  
      if (mWorkarounds.rewriteFloatUnaryMinusOperator)
      {
          options |= SH_REWRITE_FLOAT_UNARY_MINUS_OPERATOR;
      }
  
      return options;
  }
  
  bool ShaderGL::postTranslateCompile(gl::Compiler *compiler, std::string *infoLog)
  {
      // Translate the ESSL into GLSL
      const char *translatedSourceCString = mData.getTranslatedSource().c_str();
  
      // Generate a shader object and set the source
      mShaderID = mFunctions->createShader(mData.getShaderType());
      mFunctions->shaderSource(mShaderID, 1, &translatedSourceCString, nullptr);
      mFunctions->compileShader(mShaderID);
  
      // Check for compile errors from the native driver
      GLint compileStatus = GL_FALSE;
      mFunctions->getShaderiv(mShaderID, GL_COMPILE_STATUS, &compileStatus);
      if (compileStatus == GL_FALSE)
      {
          // Compilation failed, put the error into the info log
          GLint infoLogLength = 0;
          mFunctions->getShaderiv(mShaderID, GL_INFO_LOG_LENGTH, &infoLogLength);
  
          // Info log length includes the null terminator, so 1 means that the info log is an empty
          // string.
          if (infoLogLength > 1)
          {
              std::vector<char> buf(infoLogLength);
              mFunctions->getShaderInfoLog(mShaderID, infoLogLength, nullptr, &buf[0]);
  
              mFunctions->deleteShader(mShaderID);
              mShaderID = 0;
  
              *infoLog = &buf[0];
              WARN() << std::endl << *infoLog;
          }
          else
          {
              WARN() << std::endl << "Shader compilation failed with no info log.";
          }
          return false;
      }
  
      return true;
  }
  
  std::string ShaderGL::getDebugInfo() const
  {
      return mData.getTranslatedSource();
  }
  
  GLuint ShaderGL::getShaderID() const
  {
      return mShaderID;
  }
  
  }
  

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