chromium/third_party/angle/src/compiler/translator/glsl/VersionGLSL.h

//
// Copyright 2002 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_GLSL_VERSIONGLSL_H_
#define COMPILER_TRANSLATOR_GLSL_VERSIONGLSL_H_

#include "compiler/translator/tree_util/IntermTraverse.h"

#include "compiler/translator/Pragma.h"

namespace sh
{

static const int GLSL_VERSION_110 = …;
static const int GLSL_VERSION_120 = …;
static const int GLSL_VERSION_130 = …;
static const int GLSL_VERSION_140 = …;
static const int GLSL_VERSION_150 = …;
static const int GLSL_VERSION_330 = …;
static const int GLSL_VERSION_400 = …;
static const int GLSL_VERSION_410 = …;
static const int GLSL_VERSION_420 = …;
static const int GLSL_VERSION_430 = …;
static const int GLSL_VERSION_440 = …;
static const int GLSL_VERSION_450 = …;

int ShaderOutputTypeToGLSLVersion(ShShaderOutput output);

// Traverses the intermediate tree to return the minimum GLSL version
// required to legally access all built-in features used in the shader.
// GLSL 1.1 which is mandated by OpenGL 2.0 provides:
//   - #version and #extension to declare version and extensions.
//   - built-in functions refract, exp, and log.
//   - updated step() to compare x < edge instead of x <= edge.
// GLSL 1.2 which is mandated by OpenGL 2.1 provides:
//   - many changes to reduce differences when compared to the ES specification.
//   - invariant keyword and its support.
//   - c++ style name hiding rules.
//   - built-in variable gl_PointCoord for fragment shaders.
//   - matrix constructors taking matrix as argument.
//   - array as "out" function parameters
//
// TODO: ES3 equivalent versions of GLSL
class TVersionGLSL : public TIntermTraverser
{ … };

}  // namespace sh

#endif  // COMPILER_TRANSLATOR_GLSL_VERSIONGLSL_H_