// Copyright 2016 The SwiftShader Authors. All Rights Reserved. // // Licensed under the Apache License, Version 2.0 (the "License"); // you may not use this file except in compliance with the License. // You may obtain a copy of the License at // // http://www.apache.org/licenses/LICENSE-2.0 // // Unless required by applicable law or agreed to in writing, software // distributed under the License is distributed on an "AS IS" BASIS, // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. // See the License for the specific language governing permissions and // limitations under the License. // Buffer.cpp: Implements the Buffer class, representing storage of vertex and/or // index data. Implements GL buffer objects and related functionality. #include "Buffer.h" #include "main.h" #include "VertexDataManager.h" #include "IndexDataManager.h" namespace gl { Buffer::Buffer(GLuint name) : NamedObject(name) { mContents = 0; mSize = 0; mUsage = GL_DYNAMIC_DRAW; } Buffer::~Buffer() { if(mContents) { mContents->destruct(); } } void Buffer::bufferData(const void *data, GLsizeiptr size, GLenum usage) { if(mContents) { mContents->destruct(); mContents = 0; } mSize = size; mUsage = usage; if(size > 0) { const int padding = 1024; // For SIMD processing of vertices mContents = new sw::Resource(size + padding); if(!mContents) { return error(GL_OUT_OF_MEMORY); } if(data) { memcpy((void*)mContents->data(), data, size); } } } void Buffer::bufferSubData(const void *data, GLsizeiptr size, GLintptr offset) { if(mContents) { char *buffer = (char*)mContents->lock(sw::PUBLIC); memcpy(buffer + offset, data, size); mContents->unlock(); } } sw::Resource *Buffer::getResource() { return mContents; } }