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86 lines
2.9 KiB
86 lines
2.9 KiB
/****************************************************************************
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Copyright (c) 2019-2023 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 "base/std/hash/hash.h"
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#include "GFXBuffer.h"
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#include "GFXInputAssembler.h"
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#include "GFXObject.h"
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namespace cc {
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namespace gfx {
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InputAssembler::InputAssembler()
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: GFXObject(ObjectType::INPUT_ASSEMBLER) {
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}
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InputAssembler::~InputAssembler() = default;
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ccstd::hash_t InputAssembler::computeAttributesHash() const {
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ccstd::hash_t seed = static_cast<uint32_t>(_attributes.size()) * 6;
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for (const auto &attribute : _attributes) {
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ccstd::hash_combine(seed, attribute.name);
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ccstd::hash_combine(seed, attribute.format);
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ccstd::hash_combine(seed, attribute.isNormalized);
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ccstd::hash_combine(seed, attribute.stream);
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ccstd::hash_combine(seed, attribute.isInstanced);
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ccstd::hash_combine(seed, attribute.location);
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}
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return seed;
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}
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void InputAssembler::initialize(const InputAssemblerInfo &info) {
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_attributes = info.attributes;
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_vertexBuffers = info.vertexBuffers;
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_indexBuffer = info.indexBuffer;
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_indirectBuffer = info.indirectBuffer;
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_attributesHash = computeAttributesHash();
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if (_indexBuffer) {
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_drawInfo.indexCount = _indexBuffer->getCount();
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_drawInfo.firstIndex = 0;
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} else if (!_vertexBuffers.empty()) {
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_drawInfo.vertexCount = _vertexBuffers[0]->getCount();
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_drawInfo.firstVertex = 0;
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_drawInfo.vertexOffset = 0;
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}
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doInit(info);
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}
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void InputAssembler::destroy() {
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doDestroy();
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_attributes.clear();
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_attributesHash = 0U;
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_vertexBuffers.clear();
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_indexBuffer = nullptr;
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_indirectBuffer = nullptr;
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_drawInfo = DrawInfo();
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}
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} // namespace gfx
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} // namespace cc
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