mirror of https://github.com/axmolengine/axmol.git
106 lines
3.4 KiB
Plaintext
106 lines
3.4 KiB
Plaintext
/****************************************************************************
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Copyright (c) 2018-2019 Xiamen Yaji Software Co., Ltd.
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https://axmolengine.github.io/
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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 "BufferMTL.h"
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#include "../Macros.h"
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#include "BufferManager.h"
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NS_AX_BACKEND_BEGIN
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BufferMTL::BufferMTL(id<MTLDevice> mtlDevice, std::size_t size, BufferType type, BufferUsage usage)
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: Buffer(size, type, usage)
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{
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if (BufferUsage::DYNAMIC == usage)
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{
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NSMutableArray* mutableDynamicDataBuffers = [NSMutableArray arrayWithCapacity:MAX_INFLIGHT_BUFFER];
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for (int i = 0; i < MAX_INFLIGHT_BUFFER; ++i)
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{
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// Create a new buffer with enough capacity to store one instance of the dynamic buffer data
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id<MTLBuffer> dynamicDataBuffer = [mtlDevice newBufferWithLength:size options:MTLResourceStorageModeShared];
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[mutableDynamicDataBuffers addObject:dynamicDataBuffer];
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}
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_dynamicDataBuffers = [mutableDynamicDataBuffers copy];
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_mtlBuffer = _dynamicDataBuffers[0];
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BufferManager::addBuffer(this);
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}
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else
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{
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_mtlBuffer = [mtlDevice newBufferWithLength:size options:MTLResourceStorageModeShared];
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}
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}
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BufferMTL::~BufferMTL()
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{
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if (BufferUsage::DYNAMIC == _usage)
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{
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for (id<MTLBuffer> buffer in _dynamicDataBuffers)
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[buffer release];
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[_dynamicDataBuffers release];
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BufferManager::removeBuffer(this);
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}
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else
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{
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[_mtlBuffer release];
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}
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}
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void BufferMTL::updateData(const void* data, std::size_t size)
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{
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assert(size <= _size);
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updateIndex();
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memcpy((uint8_t*)_mtlBuffer.contents, data, size);
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}
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void BufferMTL::updateSubData(const void* data, std::size_t offset, std::size_t size)
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{
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assert(offset + size <= _size);
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updateIndex();
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memcpy((uint8_t*)_mtlBuffer.contents + offset, data, size);
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}
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id<MTLBuffer> BufferMTL::getMTLBuffer() const
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{
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return _mtlBuffer;
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}
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void BufferMTL::beginFrame()
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{
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_indexUpdated = false;
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}
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void BufferMTL::updateIndex()
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{
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if (BufferUsage::DYNAMIC == _usage && !_indexUpdated)
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{
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_currentFrameIndex = (_currentFrameIndex + 1) % MAX_INFLIGHT_BUFFER;
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_mtlBuffer = _dynamicDataBuffers[_currentFrameIndex];
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_indexUpdated = true;
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}
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}
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NS_AX_BACKEND_END
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