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54 lines
2.2 KiB
54 lines
2.2 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 "GFXSampler.h"
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namespace cc {
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namespace gfx {
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Sampler::Sampler(const SamplerInfo &info)
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: GFXObject(ObjectType::SAMPLER) {
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_info = info;
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_hash = computeHash(info);
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}
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ccstd::hash_t Sampler::computeHash(const SamplerInfo &info) {
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return Hasher<SamplerInfo>()(info);
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}
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SamplerInfo Sampler::unpackFromHash(ccstd::hash_t hash) {
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SamplerInfo info;
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info.minFilter = static_cast<Filter>((hash & ((1 << 2) - 1)) >> 0);
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info.magFilter = static_cast<Filter>((hash & ((1 << 2) - 1)) >> 2);
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info.mipFilter = static_cast<Filter>((hash & ((1 << 2) - 1)) >> 4);
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info.addressU = static_cast<Address>((hash & ((1 << 2) - 1)) >> 6);
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info.addressV = static_cast<Address>((hash & ((1 << 2) - 1)) >> 8);
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info.addressW = static_cast<Address>((hash & ((1 << 2) - 1)) >> 10);
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info.maxAnisotropy = (hash & ((1 << 4) - 1)) >> 12;
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info.cmpFunc = static_cast<ComparisonFunc>((hash & ((1 << 3) - 1)) >> 16);
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return info;
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}
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} // namespace gfx
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} // namespace cc
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