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316 lines
11 KiB
316 lines
11 KiB
/****************************************************************************
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Copyright (c) 2021-2023 Xiamen Yaji Software Co., Ltd.
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http://www.cocos.com
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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 to
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use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
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of the Software, and to permit persons to whom the Software is furnished to do so,
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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 "renderer/core/TextureBufferPool.h"
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#include <cmath>
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#include "core/ArrayBuffer.h"
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#include "core/TypedArray.h"
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#include "renderer/gfx-base/GFXDevice.h"
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namespace {
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uint32_t roundUp(uint32_t n, uint32_t alignment) {
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return static_cast<uint32_t>(std::ceil(n / alignment)) * alignment;
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}
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} // namespace
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namespace cc {
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TextureBufferPool::TextureBufferPool() = default;
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TextureBufferPool::TextureBufferPool(gfx::Device *device) {
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_device = device;
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}
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TextureBufferPool::~TextureBufferPool() = default;
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void TextureBufferPool::initialize(const ITextureBufferPoolInfo &info) {
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const auto &formatInfo = gfx::GFX_FORMAT_INFOS[static_cast<uint32_t>(info.format)];
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_format = info.format;
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_formatSize = formatInfo.size;
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_channels = formatInfo.count;
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_roundUpFn = info.roundUpFn.has_value() ? info.roundUpFn.value() : nullptr;
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_alignment = info.alignment.has_value() ? info.alignment.value() : 1;
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_useMcDonaldAlloc = info.alignment.has_value() && info.alignment.value();
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}
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void TextureBufferPool::destroy() {
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for (auto &chunk : _chunks) {
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CC_SAFE_DESTROY_AND_DELETE(chunk.texture);
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}
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_chunks.clear();
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_handles.clear();
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}
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ITextureBufferHandle TextureBufferPool::alloc(uint32_t size) {
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if (_useMcDonaldAlloc) {
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return mcDonaldAlloc(size);
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}
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size = roundUp(size, _alignment);
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index_t index = CC_INVALID_INDEX;
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index_t start = CC_INVALID_INDEX;
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if (start < 0) {
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for (index_t i = 0; i < _chunkCount; ++i) {
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index = i;
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start = findAvailableSpace(size, index);
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if (start >= 0) break;
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}
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}
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if (start >= 0) {
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auto chunk = _chunks[index];
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chunk.start += static_cast<index_t>(size);
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ITextureBufferHandle handle;
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handle.chunkIdx = index;
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handle.start = start;
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handle.end = static_cast<index_t>(start + size);
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handle.texture = chunk.texture;
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_handles.emplace_back(handle);
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return handle;
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}
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// create a new one
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auto targetSize = static_cast<int32_t>(std::sqrt(size / _formatSize));
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uint32_t texLength = _roundUpFn ? _roundUpFn(targetSize, _formatSize) : std::max(1024, static_cast<int>(utils::nextPOT(targetSize)));
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auto newChunk = _chunks[createChunk(texLength)];
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newChunk.start += static_cast<index_t>(size);
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ITextureBufferHandle texHandle;
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texHandle.chunkIdx = static_cast<index_t>(_chunkCount - 1);
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texHandle.start = 0;
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texHandle.end = static_cast<index_t>(size);
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texHandle.texture = newChunk.texture;
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_handles.emplace_back(texHandle);
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return texHandle;
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}
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ITextureBufferHandle TextureBufferPool::alloc(uint32_t size, index_t chunkIdx) {
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size = roundUp(size, _alignment);
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index_t index = chunkIdx;
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index_t start = findAvailableSpace(size, index);
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if (start < 0) {
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for (index_t i = 0; i < _chunkCount; ++i) {
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index = i;
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start = findAvailableSpace(size, index);
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if (start >= 0) break;
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}
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}
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if (start >= 0) {
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auto chunk = _chunks[index];
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chunk.start += static_cast<index_t>(size);
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ITextureBufferHandle handle;
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handle.chunkIdx = index;
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handle.start = start;
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handle.end = static_cast<index_t>(start + size);
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handle.texture = chunk.texture;
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_handles.emplace_back(handle);
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return handle;
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}
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// create a new one
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auto targetSize = static_cast<int32_t>(std::sqrt(size / _formatSize));
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uint32_t texLength = _roundUpFn ? _roundUpFn(targetSize, _formatSize) : std::max(1024, static_cast<int>(utils::nextPOT(targetSize)));
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auto newChunk = _chunks[createChunk(texLength)];
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newChunk.start += static_cast<index_t>(size);
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ITextureBufferHandle texHandle;
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texHandle.chunkIdx = static_cast<index_t>(_chunkCount - 1);
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texHandle.start = 0;
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texHandle.end = static_cast<index_t>(size);
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texHandle.texture = newChunk.texture;
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_handles.emplace_back(texHandle);
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return texHandle;
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}
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void TextureBufferPool::free(const ITextureBufferHandle &handle) {
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auto iter = std::find(_handles.begin(), _handles.end(), handle);
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if (iter != _handles.end()) {
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_chunks[handle.chunkIdx].end = handle.end;
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_handles.erase(iter);
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}
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}
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uint32_t TextureBufferPool::createChunk(uint32_t length) {
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uint32_t texSize = length * length * _formatSize;
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// debug(`TextureBufferPool: Allocate chunk $device->createTexture({gfx::TextureType::TEX2D,
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auto *texture = _device->createTexture({gfx::TextureType::TEX2D,
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gfx::TextureUsageBit::SAMPLED | gfx::TextureUsageBit::TRANSFER_DST,
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_format,
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length,
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length});
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ITextureBuffer chunk;
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chunk.texture = texture;
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chunk.size = texSize;
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chunk.start = 0;
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chunk.end = static_cast<index_t>(texSize);
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_chunks[_chunkCount] = chunk;
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return _chunkCount++;
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}
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void TextureBufferPool::update(const ITextureBufferHandle &handle, ArrayBuffer *buffer) {
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gfx::BufferDataList buffers;
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uint8_t *bufferData = buffer->getData();
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gfx::BufferTextureCopyList regions;
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auto start = static_cast<int32_t>(handle.start / _formatSize);
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uint32_t remainSize = buffer->byteLength() / _formatSize;
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int32_t offsetX = start % static_cast<int32_t>(handle.texture->getWidth());
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int32_t offsetY = std::floor(start / handle.texture->getWidth());
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uint32_t copySize = std::min(handle.texture->getWidth() - offsetX, remainSize);
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uint32_t begin = 0;
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if (offsetX > 0) {
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_region0.texOffset.x = offsetX;
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_region0.texOffset.y = offsetY;
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_region0.texExtent.width = copySize;
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_region0.texExtent.height = 1;
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buffers.emplace_back(bufferData + begin * _formatSize);
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regions.emplace_back(_region0);
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offsetX = 0;
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offsetY += 1;
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remainSize -= copySize;
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begin += copySize;
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}
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if (remainSize > 0) {
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_region1.texOffset.x = offsetX;
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_region1.texOffset.y = offsetY;
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if (remainSize > handle.texture->getWidth()) {
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_region1.texExtent.width = handle.texture->getWidth();
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_region1.texExtent.height = std::floor(remainSize / handle.texture->getWidth());
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copySize = _region1.texExtent.width * _region1.texExtent.height;
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} else {
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copySize = remainSize;
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_region1.texExtent.width = copySize;
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_region1.texExtent.height = 1;
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}
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buffers.emplace_back(bufferData + begin * _formatSize);
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regions.emplace_back(_region1);
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offsetX = 0;
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offsetY += static_cast<int32_t>(_region1.texExtent.height);
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remainSize -= copySize;
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begin += copySize;
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}
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if (remainSize > 0) {
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_region2.texOffset.x = offsetX;
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_region2.texOffset.y = offsetY;
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_region2.texExtent.width = remainSize;
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_region2.texExtent.height = 1;
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buffers.emplace_back(bufferData + begin * _formatSize);
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regions.emplace_back(_region2);
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}
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_device->copyBuffersToTexture(buffers, handle.texture, regions);
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}
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index_t TextureBufferPool::findAvailableSpace(uint32_t size, index_t chunkIdx) const {
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auto chunk = _chunks[chunkIdx];
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bool isFound = false;
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index_t start = chunk.start;
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if ((start + size) <= chunk.size) {
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isFound = true;
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} else {
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start = 0; // try to find from head again
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ccstd::vector<ITextureBufferHandle> handles;
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for (auto h : _handles) {
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if (h.chunkIdx == chunkIdx) {
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handles.emplace_back(h);
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}
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}
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std::sort(handles.begin(), handles.end(), [](const ITextureBufferHandle &a, const ITextureBufferHandle &b) { return a.start - b.start; });
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for (auto handle : handles) {
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if ((start + size) <= handle.start) {
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isFound = true;
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break;
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}
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start = handle.end;
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}
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if (!isFound && (start + size) <= chunk.size) {
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isFound = true;
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}
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}
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return isFound ? start : CC_INVALID_INDEX;
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}
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ITextureBufferHandle TextureBufferPool::mcDonaldAlloc(uint32_t size) {
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size = roundUp(size, _alignment);
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for (index_t i = 0; i < _chunkCount; ++i) {
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auto chunk = _chunks[i];
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bool isFound = false;
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index_t start = chunk.start;
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if ((start + size) <= chunk.end) {
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isFound = true;
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} else if (start > chunk.end) {
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if ((start + size) <= chunk.size) {
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isFound = true;
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} else if (size <= chunk.end) {
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// Try to find from head again.
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start = 0;
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chunk.start = 0;
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isFound = true;
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}
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} else if (start == chunk.end) {
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start = 0;
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chunk.start = 0;
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chunk.end = static_cast<index_t>(chunk.size);
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if (size <= chunk.end) {
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isFound = true;
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}
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}
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if (isFound) {
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chunk.start += static_cast<index_t>(size);
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ITextureBufferHandle handle;
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handle.chunkIdx = i;
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handle.start = start;
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handle.end = static_cast<index_t>(size);
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handle.texture = chunk.texture;
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_handles.emplace_back(handle);
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return handle;
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}
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}
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// create a new one
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auto targetSize = static_cast<int32_t>(std::sqrt(size / _formatSize));
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uint32_t texLength = _roundUpFn ? _roundUpFn(targetSize, _formatSize) : std::max(1024, static_cast<int>(utils::nextPOT(targetSize)));
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auto newChunk = _chunks[createChunk(texLength)];
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newChunk.start += static_cast<index_t>(size);
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ITextureBufferHandle texHandle;
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texHandle.chunkIdx = static_cast<index_t>(_chunkCount);
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texHandle.start = 0;
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texHandle.end = static_cast<index_t>(size),
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texHandle.texture = newChunk.texture;
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_handles.emplace_back(texHandle);
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return texHandle;
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}
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} // namespace cc
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