| // |
| // Copyright (c) 2002-2013 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_VERSIONGLSL_H_ |
| #define COMPILER_TRANSLATOR_VERSIONGLSL_H_ |
| |
| #include "compiler/translator/IntermNode.h" |
| |
| #include "compiler/translator/Pragma.h" |
| |
| namespace sh |
| { |
| |
| static const int GLSL_VERSION_110 = 110; |
| static const int GLSL_VERSION_120 = 120; |
| static const int GLSL_VERSION_130 = 130; |
| static const int GLSL_VERSION_140 = 140; |
| static const int GLSL_VERSION_150 = 150; |
| static const int GLSL_VERSION_330 = 330; |
| static const int GLSL_VERSION_400 = 400; |
| static const int GLSL_VERSION_410 = 410; |
| static const int GLSL_VERSION_420 = 420; |
| static const int GLSL_VERSION_430 = 430; |
| static const int GLSL_VERSION_440 = 440; |
| static const int GLSL_VERSION_450 = 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 |
| { |
| public: |
| TVersionGLSL(sh::GLenum type, const TPragma &pragma, ShShaderOutput output); |
| |
| // If output is core profile, returns 150. |
| // If output is legacy profile, |
| // Returns 120 if the following is used the shader: |
| // - "invariant", |
| // - "gl_PointCoord", |
| // - matrix/matrix constructors |
| // - array "out" parameters |
| // Else 110 is returned. |
| int getVersion() const { return mVersion; } |
| |
| void visitSymbol(TIntermSymbol *node) override; |
| bool visitAggregate(Visit, TIntermAggregate *node) override; |
| bool visitInvariantDeclaration(Visit, TIntermInvariantDeclaration *node) override; |
| bool visitFunctionPrototype(Visit, TIntermFunctionPrototype *node) override; |
| bool visitDeclaration(Visit, TIntermDeclaration *node) override; |
| |
| private: |
| void ensureVersionIsAtLeast(int version); |
| |
| int mVersion; |
| }; |
| |
| } // namespace sh |
| |
| #endif // COMPILER_TRANSLATOR_VERSIONGLSL_H_ |