mirror of https://github.com/axmolengine/axmol.git
103 lines
3.1 KiB
C++
103 lines
3.1 KiB
C++
/*
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Copyright 2010 Google Inc.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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#ifndef GrGpuGLShaders2_DEFINED
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#define GrGpuGLShaders2_DEFINED
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#include "GrGpuGL.h"
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// Programmable OpenGL or OpenGL ES 2.0
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class GrGpuGLShaders2 : public GrGpuGL {
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public:
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GrGpuGLShaders2();
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virtual ~GrGpuGLShaders2();
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virtual void resetContext();
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protected:
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// overrides from GrGpu
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virtual bool flushGraphicsState(PrimitiveType type);
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virtual void setupGeometry(uint32_t startVertex,
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uint32_t startIndex,
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uint32_t vertexCount,
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uint32_t indexCount);
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private:
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void resetContextHelper();
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// sets the texture matrix uniform for currently bound program
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void flushTextureMatrix(int stage);
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// sets the MVP matrix uniform for currently bound program
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void flushViewMatrix();
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// flushes the parameters to two point radial gradient
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void flushRadial2(int stage);
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// called at flush time to setup the appropriate program
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void flushProgram(PrimitiveType type);
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struct Program;
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struct StageDesc;
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struct ProgramDesc;
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struct UniLocations;
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struct StageUniLocations;
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struct ShaderCodeSegments;
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class ProgramCache;
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// gets a description of needed shader
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void getProgramDesc(PrimitiveType primType, ProgramDesc* desc);
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// generates and compiles a program from a description and vertex layout
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// will change GL's bound program
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static void GenProgram(const ProgramDesc& desc, Program* program);
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// generates code for a stage of the shader
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static void GenStageCode(int stageNum,
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const StageDesc& desc,
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const char* psInColor,
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const char* psOutColor,
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const char* vsInCoord,
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ShaderCodeSegments* segments,
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StageUniLocations* locations);
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// Compiles a GL shader, returns shader ID or 0 if failed
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// params have same meaning as glShaderSource
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static GLuint CompileShader(GLenum type, int stringCnt,
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const char** strings,
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int* stringLengths);
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static void DeleteProgram(Program* program);
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void ProgramUnitTest();
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GrGLTexture::Orientation fTextureOrientation;
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ProgramCache* fProgramCache;
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Program* fProgram;
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GLuint fHWProgramID;
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typedef GrGpuGL INHERITED;
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};
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#endif
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