kc3-lang/angle/src/compiler/CodeGenGLSL.cpp

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• Hash : 5601ea0d
  Author :
  Date : 2011-06-10T18:23:25
  

  Implement ES2 backend for Angle translator.
  
  With this CL, we have the option to select a code output backend: GLSL, GLSL ES, or HLSL.
  
  Note that we always emit the highest supported float precision for fragment shader due to anglebug 168.  Although this is a temporary solution, it's not against GLSL ES spec, because it's ok for implementation to upgrade precision.
  
  Tested with WebGL conformance test suite, GLES2 conformance test suite (only failed 2/1198), and a few webgl demos, including worlds of webgl, aquarium, etc.
  
  anglebug=81
  test=translator emitting correct GLSL ES code when ES2 backend is selected.
  Review URL: http://codereview.appspot.com/4550129
  
  git-svn-id: https://angleproject.googlecode.com/svn/trunk@687 736b8ea6-26fd-11df-bfd4-992fa37f6226
  

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• src/compiler/CodeGenGLSL.cpp

• //
  // Copyright (c) 2002-2010 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.
  //
  
  #include "compiler/TranslatorGLSL.h"
  #include "compiler/TranslatorESSL.h"
  
  //
  // This function must be provided to create the actual
  // compile object used by higher level code.  It returns
  // a subclass of TCompiler.
  //
  TCompiler* ConstructCompiler(
      ShShaderType type, ShShaderSpec spec, ShShaderOutput output)
  {
      switch (output) {
        case SH_GLSL_OUTPUT:
          return new TranslatorGLSL(type, spec);
        case SH_ESSL_OUTPUT:
          return new TranslatorESSL(type, spec);
        default:
          return NULL;
      }
  }
  
  //
  // Delete the compiler made by ConstructCompiler
  //
  void DeleteCompiler(TCompiler* compiler)
  {
      delete compiler;
  }
  

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