michael@0: //
michael@0: // Copyright (c) 2002-2010 The ANGLE Project Authors. All rights reserved.
michael@0: // Use of this source code is governed by a BSD-style license that can be
michael@0: // found in the LICENSE file.
michael@0: //
michael@0: 
michael@0: #include "compiler/TranslatorGLSL.h"
michael@0: 
michael@0: #include "compiler/OutputGLSL.h"
michael@0: #include "compiler/VersionGLSL.h"
michael@0: 
michael@0: static void writeVersion(ShShaderType type, TIntermNode* root,
michael@0:                          TInfoSinkBase& sink) {
michael@0:     TVersionGLSL versionGLSL(type);
michael@0:     root->traverse(&versionGLSL);
michael@0:     int version = versionGLSL.getVersion();
michael@0:     // We need to write version directive only if it is greater than 110.
michael@0:     // If there is no version directive in the shader, 110 is implied.
michael@0:     if (version > 110) {
michael@0:         sink << "#version " << version << "\n";
michael@0:     }
michael@0: }
michael@0: 
michael@0: TranslatorGLSL::TranslatorGLSL(ShShaderType type, ShShaderSpec spec)
michael@0:     : TCompiler(type, spec) {
michael@0: }
michael@0: 
michael@0: void TranslatorGLSL::translate(TIntermNode* root) {
michael@0:     TInfoSinkBase& sink = getInfoSink().obj;
michael@0: 
michael@0:     // Write GLSL version.
michael@0:     writeVersion(getShaderType(), root, sink);
michael@0: 
michael@0:     // Write emulated built-in functions if needed.
michael@0:     getBuiltInFunctionEmulator().OutputEmulatedFunctionDefinition(
michael@0:         sink, false);
michael@0: 
michael@0:     // Write array bounds clamping emulation if needed.
michael@0:     getArrayBoundsClamper().OutputClampingFunctionDefinition(sink);
michael@0: 
michael@0:     // Write translated shader.
michael@0:     TOutputGLSL outputGLSL(sink, getArrayIndexClampingStrategy(), getHashFunction(), getNameMap(), getSymbolTable());
michael@0:     root->traverse(&outputGLSL);
michael@0: }