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 // Buffer.h: Defines the Buffer class, representing storage of vertex and/or 16 // index data. Implements GL buffer objects and related functionality. 17 // [OpenGL ES 2.0.24] section 2.9 page 21. 18 19 #ifndef LIBGLES_CM_BUFFER_H_ 20 #define LIBGLES_CM_BUFFER_H_ 21 22 #include "common/Object.hpp" 23 #include "Common/Resource.hpp" 24 25 #include <GLES/gl.h> 26 27 #include <cstddef> 28 #include <vector> 29 30 namespace es1 31 { 32 class Buffer : public gl::NamedObject 33 { 34 public: 35 explicit Buffer(GLuint name); 36 37 virtual ~Buffer(); 38 39 void bufferData(const void *data, GLsizeiptr size, GLenum usage); 40 void bufferSubData(const void *data, GLsizeiptr size, GLintptr offset); 41 data()42 const void *data() { return mContents ? mContents->data() : 0; } size()43 size_t size() const { return mSize; } usage()44 GLenum usage() const { return mUsage; } 45 46 sw::Resource *getResource(); 47 48 private: 49 sw::Resource *mContents; 50 size_t mSize; 51 GLenum mUsage; 52 }; 53 54 } 55 56 #endif // LIBGLES_CM_BUFFER_H_ 57