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Diffstat (limited to 'services/surfaceflinger/RenderEngine/Program.h')
-rw-r--r-- | services/surfaceflinger/RenderEngine/Program.h | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/services/surfaceflinger/RenderEngine/Program.h b/services/surfaceflinger/RenderEngine/Program.h new file mode 100644 index 0000000..36bd120 --- /dev/null +++ b/services/surfaceflinger/RenderEngine/Program.h @@ -0,0 +1,92 @@ +/* + * Copyright 2013 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#ifndef SF_RENDER_ENGINE_PROGRAM_H +#define SF_RENDER_ENGINE_PROGRAM_H + +#include <stdint.h> + +#include <GLES2/gl2.h> + +#include "Description.h" +#include "ProgramCache.h" + +namespace android { + +class String8; + +/* + * Abstracts a GLSL program comprising a vertex and fragment shader + */ +class Program { +public: + // known locations for position and texture coordinates + enum { position=0, texCoords=1 }; + + Program(const ProgramCache::Key& needs, const char* vertex, const char* fragment); + ~Program(); + + /* whether this object is usable */ + bool isValid() const; + + /* Binds this program to the GLES context */ + void use(); + + /* Returns the location of the specified attribute */ + GLuint getAttrib(const char* name) const; + + /* Returns the location of the specified uniform */ + GLint getUniform(const char* name) const; + + /* set-up uniforms from the description */ + void setUniforms(const Description& desc); + + +private: + GLuint buildShader(const char* source, GLenum type); + String8& dumpShader(String8& result, GLenum type); + + // whether the initialization succeeded + bool mInitialized; + + // Name of the OpenGL program and shaders + GLuint mProgram; + GLuint mVertexShader; + GLuint mFragmentShader; + + /* location of the projection matrix uniform */ + GLint mProjectionMatrixLoc; + + /* location of the color matrix uniform */ + GLint mColorMatrixLoc; + + /* location of the texture matrix uniform */ + GLint mTextureMatrixLoc; + + /* location of the sampler uniform */ + GLint mSamplerLoc; + + /* location of the alpha plane uniform */ + GLint mAlphaPlaneLoc; + + /* location of the color uniform */ + GLint mColorLoc; +}; + + +} /* namespace android */ + +#endif /* SF_RENDER_ENGINE_PROGRAM_H */ |