165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn/* 265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn * Copyright (C) 2011 The Android Open Source Project 365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn * 465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn * Licensed under the Apache License, Version 2.0 (the "License"); 565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn * you may not use this file except in compliance with the License. 665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn * You may obtain a copy of the License at 765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn * 865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn * http://www.apache.org/licenses/LICENSE-2.0 965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn * 1065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn * Unless required by applicable law or agreed to in writing, software 1165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn * distributed under the License is distributed on an "AS IS" BASIS, 1265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 1365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn * See the License for the specific language governing permissions and 1465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn * limitations under the License. 1565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn */ 1665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 1765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn#ifndef ANDROID_FILTERFW_CORE_VERTEXFRAME_H 1865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn#define ANDROID_FILTERFW_CORE_VERTEXFRAME_H 1965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 2065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn#include <GLES2/gl2.h> 2165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 2265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Rennnamespace android { 2365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Rennnamespace filterfw { 2465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 2565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn// A VertexFrame stores vertex attribute data in a VBO. Unlike other frames, 2665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn// you often create instances of VertexFrame yourself, to pass vertex data to 2765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn// a ShaderProgram. Note, that any kind of reading from VertexFrames is NOT 2865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn// supported. Once data is uploaded to a VertexFrame, it cannot be read from 2965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn// again. 3065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Rennclass VertexFrame { 3165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn public: 3265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn // Create a VertexFrame of the specified size (in bytes). 3365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn explicit VertexFrame(int size); 3465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 3565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn ~VertexFrame(); 3665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 3765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn // Upload the given data to the vertex buffer. The size must match the size 3865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn // passed in the constructor for the first upload. Subsequent uploads must 3965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn // be able to fit within the allocated space (i.e. size must not exceed the 4065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn // frame's size). 4165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn bool WriteData(const uint8_t* data, int size); 4265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 4365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn // The size of the vertex buffer in bytes. 4465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn int Size() const; 4565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 4665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn // Return the id of the internal VBO. Returns 0 if no VBO has been 4765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn // generated yet. The internal VBO is generated the first time data is 4865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn // uploaded. 4965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn GLuint GetVboId() const { 5065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn return vbo_; 5165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 5265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 5365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn // Returns true if the frame contains an allocated VBO. 5465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn bool HasBuffer() const { 5565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn return vbo_ != 0; 5665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 5765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 5865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn private: 5965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn // Create the VBO 6065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn bool CreateBuffer(); 6165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 6265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn // Returns true if the VBO has been created. 6365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn bool HasVBO() const { 6465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn return vbo_ != 0; 6565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 6665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 6765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn // The internal VBO handle 6865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn GLuint vbo_; 6965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 7065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn // The size of this frame in bytes 7165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn int size_; 7265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn}; 7365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 7465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn} // namespace filterfw 7565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn} // namespace android 7665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 7765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn#endif // ANDROID_FILTERFW_CORE_VERTEXFRAME_H 78