mirror of https://github.com/axmolengine/axmol.git
160 lines
4.5 KiB
C++
160 lines
4.5 KiB
C++
/****************************************************************************
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Copyright (c) 2018-2019 Xiamen Yaji Software Co., Ltd.
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http://www.cocos2d-x.org
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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****************************************************************************/
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#include "BufferGL.h"
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#include <cassert>
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#include "base/ccMacros.h"
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#include "base/CCDirector.h"
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#include "base/CCEventType.h"
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#include "base/CCEventDispatcher.h"
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CC_BACKEND_BEGIN
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namespace {
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GLenum toGLUsage(const BufferUsage& usage)
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{
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switch (usage)
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{
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case BufferUsage::STATIC:
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return GL_STATIC_DRAW;
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case BufferUsage::DYNAMIC:
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return GL_DYNAMIC_DRAW;
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default:
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return GL_DYNAMIC_DRAW;
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}
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}
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}
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BufferGL::BufferGL(unsigned int size, BufferType type, BufferUsage usage)
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: Buffer(size, type, usage)
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{
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glGenBuffers(1, &_buffer);
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#if CC_ENABLE_CACHE_TEXTURE_DATA
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_backToForegroundListener = EventListenerCustom::create(EVENT_RENDERER_RECREATED, [this](EventCustom*){
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this->reloadBuffer();
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});
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Director::getInstance()->getEventDispatcher()->addEventListenerWithFixedPriority(_backToForegroundListener, -1);
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#endif
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}
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BufferGL::~BufferGL()
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{
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if (_buffer)
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glDeleteBuffers(1, &_buffer);
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#if CC_ENABLE_CACHE_TEXTURE_DATA
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CC_SAFE_DELETE_ARRAY(_data);
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Director::getInstance()->getEventDispatcher()->removeEventListener(_backToForegroundListener);
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#endif
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}
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void BufferGL::usingDefaultStoredData(bool needDefaultStoredData)
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{
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#if CC_ENABLE_CACHE_TEXTURE_DATA
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_needDefaultStoredData = needDefaultStoredData;
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#endif
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}
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#if CC_ENABLE_CACHE_TEXTURE_DATA
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void BufferGL::reloadBuffer()
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{
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glGenBuffers(1, &_buffer);
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if(!_needDefaultStoredData)
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return;
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_bufferAlreadyFilled = true;
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updateData(_data, _bufferAllocated);
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}
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void BufferGL::fillBuffer(void* data, unsigned int offset, unsigned int size)
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{
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if(_bufferAlreadyFilled || !_needDefaultStoredData || BufferUsage::STATIC != _usage)
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return;
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if(_data == nullptr)
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{
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_data = new (std::nothrow) char[_bufferAllocated];
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}
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memcpy(_data + offset, data, size);
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}
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#endif
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void BufferGL::updateData(void* data, unsigned int size)
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{
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assert(size && size <= _size);
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if (_buffer)
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{
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if (BufferType::VERTEX == _type)
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{
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glBindBuffer(GL_ARRAY_BUFFER, _buffer);
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glBufferData(GL_ARRAY_BUFFER, size, data, toGLUsage(_usage));
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}
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else
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{
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glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, _buffer);
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glBufferData(GL_ELEMENT_ARRAY_BUFFER, size, data, toGLUsage(_usage));
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}
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CHECK_GL_ERROR_DEBUG();
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_bufferAllocated = size;
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#if CC_ENABLE_CACHE_TEXTURE_DATA
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fillBuffer(data, 0, size);
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#endif
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}
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}
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void BufferGL::updateSubData(void* data, unsigned int offset, unsigned int size)
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{
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CCASSERT(_bufferAllocated != 0, "updateData should be invoke before updateSubData");
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CCASSERT(offset + size <= _bufferAllocated, "buffer size overflow");
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if (_buffer)
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{
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CHECK_GL_ERROR_DEBUG();
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if (BufferType::VERTEX == _type)
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{
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glBindBuffer(GL_ARRAY_BUFFER, _buffer);
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glBufferSubData(GL_ARRAY_BUFFER, offset, size, data);
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}
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else
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{
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glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, _buffer);
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glBufferSubData(GL_ELEMENT_ARRAY_BUFFER, offset, size, data);
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}
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#if CC_ENABLE_CACHE_TEXTURE_DATA
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fillBuffer(data, offset, size);
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#endif
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CHECK_GL_ERROR_DEBUG();
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}
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}
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CC_BACKEND_END
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