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

• //
  // Copyright (c) 2002-2011 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.
  //
  
  #include "compiler/OutputESSL.h"
  
  TOutputESSL::TOutputESSL(TInfoSinkBase& objSink)
      : TOutputGLSLBase(objSink)
  {
  }
  
  bool TOutputESSL::writeVariablePrecision(TPrecision precision)
  {
      if (precision == EbpUndefined)
          return false;
  
      TInfoSinkBase& out = objSink();
      out << getPrecisionString(precision);
      return true;
  }
  

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