117 lines
4.3 KiB
C++
117 lines
4.3 KiB
C++
// Copyright 2017 The Dawn Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "dawn_native/Sampler.h"
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#include "common/HashUtils.h"
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#include "dawn_native/Device.h"
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#include "dawn_native/ValidationUtils_autogen.h"
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#include <cmath>
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namespace dawn_native {
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MaybeError ValidateSamplerDescriptor(DeviceBase*, const SamplerDescriptor* descriptor) {
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if (descriptor->nextInChain != nullptr) {
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return DAWN_VALIDATION_ERROR("nextInChain must be nullptr");
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}
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if (std::isnan(descriptor->lodMinClamp) || std::isnan(descriptor->lodMaxClamp)) {
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return DAWN_VALIDATION_ERROR("LOD clamp bounds must not be NaN");
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}
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if (descriptor->lodMinClamp < 0 || descriptor->lodMaxClamp < 0) {
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return DAWN_VALIDATION_ERROR("LOD clamp bounds must be positive");
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}
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if (descriptor->lodMinClamp > descriptor->lodMaxClamp) {
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return DAWN_VALIDATION_ERROR(
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"Min lod clamp value cannot greater than max lod clamp value");
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}
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DAWN_TRY(ValidateFilterMode(descriptor->minFilter));
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DAWN_TRY(ValidateFilterMode(descriptor->magFilter));
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DAWN_TRY(ValidateFilterMode(descriptor->mipmapFilter));
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DAWN_TRY(ValidateAddressMode(descriptor->addressModeU));
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DAWN_TRY(ValidateAddressMode(descriptor->addressModeV));
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DAWN_TRY(ValidateAddressMode(descriptor->addressModeW));
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DAWN_TRY(ValidateCompareFunction(descriptor->compare));
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return {};
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}
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// SamplerBase
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SamplerBase::SamplerBase(DeviceBase* device, const SamplerDescriptor* descriptor)
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: CachedObject(device),
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mAddressModeU(descriptor->addressModeU),
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mAddressModeV(descriptor->addressModeV),
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mAddressModeW(descriptor->addressModeW),
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mMagFilter(descriptor->magFilter),
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mMinFilter(descriptor->minFilter),
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mMipmapFilter(descriptor->mipmapFilter),
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mLodMinClamp(descriptor->lodMinClamp),
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mLodMaxClamp(descriptor->lodMaxClamp),
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mCompareFunction(descriptor->compare) {
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}
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SamplerBase::SamplerBase(DeviceBase* device, ObjectBase::ErrorTag tag)
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: CachedObject(device, tag) {
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}
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SamplerBase::~SamplerBase() {
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if (IsCachedReference()) {
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GetDevice()->UncacheSampler(this);
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}
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}
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// static
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SamplerBase* SamplerBase::MakeError(DeviceBase* device) {
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return new SamplerBase(device, ObjectBase::kError);
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}
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size_t SamplerBase::HashFunc::operator()(const SamplerBase* module) const {
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size_t hash = 0;
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HashCombine(&hash, module->mAddressModeU);
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HashCombine(&hash, module->mAddressModeV);
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HashCombine(&hash, module->mAddressModeW);
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HashCombine(&hash, module->mMagFilter);
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HashCombine(&hash, module->mMinFilter);
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HashCombine(&hash, module->mMipmapFilter);
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HashCombine(&hash, module->mLodMinClamp);
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HashCombine(&hash, module->mLodMaxClamp);
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HashCombine(&hash, module->mCompareFunction);
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return hash;
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}
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bool SamplerBase::EqualityFunc::operator()(const SamplerBase* a, const SamplerBase* b) const {
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if (a == b) {
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return true;
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}
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ASSERT(!std::isnan(a->mLodMinClamp));
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ASSERT(!std::isnan(b->mLodMinClamp));
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ASSERT(!std::isnan(a->mLodMaxClamp));
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ASSERT(!std::isnan(b->mLodMaxClamp));
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return a->mAddressModeU == b->mAddressModeU && a->mAddressModeV == b->mAddressModeV &&
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a->mAddressModeW == b->mAddressModeW && a->mMagFilter == b->mMagFilter &&
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a->mMinFilter == b->mMinFilter && a->mMipmapFilter == b->mMipmapFilter &&
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a->mLodMinClamp == b->mLodMinClamp && a->mLodMaxClamp == b->mLodMaxClamp &&
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a->mCompareFunction == b->mCompareFunction;
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}
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} // namespace dawn_native
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