| // 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. |
| // [OpenGL ES 2.0.24] section 2.9 page 21. |
| |
| #include "Buffer.h" |
| |
| #include "main.h" |
| #include "VertexDataManager.h" |
| #include "IndexDataManager.h" |
| |
| namespace es1 |
| { |
| |
| 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; |
| } |
| |
| } |