1 // Copyright 2016 The SwiftShader Authors. All Rights Reserved. 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 // TransformFeedback.h: Defines the es2::TransformFeedback class 16 17 #ifndef LIBGLESV2_TRANSFORM_FEEDBACK_H_ 18 #define LIBGLESV2_TRANSFORM_FEEDBACK_H_ 19 20 #include "Buffer.h" 21 #include "Context.h" 22 #include "common/Object.hpp" 23 #include "Renderer/Renderer.hpp" 24 25 #include <GLES2/gl2.h> 26 27 namespace es2 28 { 29 30 class TransformFeedback : public gl::NamedObject 31 { 32 public: 33 TransformFeedback(GLuint name); 34 ~TransformFeedback(); 35 getBuffers()36 BufferBinding* getBuffers() { return mBuffer; } 37 38 Buffer* getGenericBuffer() const; 39 Buffer* getBuffer(GLuint index) const; 40 GLuint getGenericBufferName() const; 41 GLuint getBufferName(GLuint index) const; 42 int getOffset(GLuint index) const; 43 int getSize(GLuint index) const; 44 bool isActive() const; 45 bool isPaused() const; 46 GLenum primitiveMode() const; 47 int vertexOffset() const; 48 49 void setGenericBuffer(Buffer* buffer); 50 void setBuffer(GLuint index, Buffer* buffer); 51 void setBuffer(GLuint index, Buffer* buffer, GLintptr offset, GLsizeiptr size); 52 void detachBuffer(GLuint buffer); 53 void begin(GLenum primitiveMode); 54 void end(); 55 void setPaused(bool paused); 56 void addVertexOffset(int count); 57 58 private: 59 gl::BindingPointer<Buffer> mGenericBuffer; 60 BufferBinding mBuffer[MAX_TRANSFORM_FEEDBACK_SEPARATE_ATTRIBS]; 61 62 bool mActive; 63 bool mPaused; 64 GLenum mPrimitiveMode; 65 int mVertexOffset; 66 }; 67 68 } 69 70 #endif // LIBGLESV2_TRANSFORM_FEEDBACK_H_ 71