Mathias Agopian | 3f84483 | 2013-08-07 21:24:32 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2013 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | #ifndef SF_RENDER_ENGINE_PROGRAM_H |
| 18 | #define SF_RENDER_ENGINE_PROGRAM_H |
| 19 | |
| 20 | #include <stdint.h> |
| 21 | |
| 22 | #include <GLES2/gl2.h> |
| 23 | |
| 24 | #include "Description.h" |
| 25 | #include "ProgramCache.h" |
| 26 | |
| 27 | namespace android { |
| 28 | |
| 29 | class String8; |
| 30 | |
| 31 | /* |
| 32 | * Abstracts a GLSL program comprising a vertex and fragment shader |
| 33 | */ |
| 34 | class Program { |
| 35 | public: |
| 36 | // known locations for position and texture coordinates |
| 37 | enum { position=0, texCoords=1 }; |
| 38 | |
| 39 | Program(const ProgramCache::Key& needs, const char* vertex, const char* fragment); |
| 40 | ~Program(); |
| 41 | |
| 42 | /* whether this object is usable */ |
| 43 | bool isValid() const; |
| 44 | |
| 45 | /* Binds this program to the GLES context */ |
| 46 | void use(); |
| 47 | |
| 48 | /* Returns the location of the specified attribute */ |
| 49 | GLuint getAttrib(const char* name) const; |
| 50 | |
| 51 | /* Returns the location of the specified uniform */ |
| 52 | GLint getUniform(const char* name) const; |
| 53 | |
| 54 | /* set-up uniforms from the description */ |
| 55 | void setUniforms(const Description& desc); |
| 56 | |
| 57 | |
| 58 | private: |
| 59 | GLuint buildShader(const char* source, GLenum type); |
| 60 | String8& dumpShader(String8& result, GLenum type); |
| 61 | |
| 62 | // whether the initialization succeeded |
| 63 | bool mInitialized; |
| 64 | |
| 65 | // Name of the OpenGL program and shaders |
| 66 | GLuint mProgram; |
| 67 | GLuint mVertexShader; |
| 68 | GLuint mFragmentShader; |
| 69 | |
| 70 | /* location of the projection matrix uniform */ |
| 71 | GLint mProjectionMatrixLoc; |
| 72 | |
Mathias Agopian | ff2ed70 | 2013-09-01 21:36:12 -0700 | [diff] [blame] | 73 | /* location of the color matrix uniform */ |
| 74 | GLint mColorMatrixLoc; |
| 75 | |
Mathias Agopian | 3f84483 | 2013-08-07 21:24:32 -0700 | [diff] [blame] | 76 | /* location of the texture matrix uniform */ |
| 77 | GLint mTextureMatrixLoc; |
| 78 | |
| 79 | /* location of the sampler uniform */ |
| 80 | GLint mSamplerLoc; |
| 81 | |
| 82 | /* location of the alpha plane uniform */ |
| 83 | GLint mAlphaPlaneLoc; |
| 84 | |
| 85 | /* location of the color uniform */ |
| 86 | GLint mColorLoc; |
| 87 | }; |
| 88 | |
| 89 | |
| 90 | } /* namespace android */ |
| 91 | |
| 92 | #endif /* SF_RENDER_ENGINE_PROGRAM_H */ |