| // Copyright 2017 The Dawn Authors |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| #include "dawn_native/BindGroupLayout.h" |
| |
| #include "common/BitSetIterator.h" |
| #include "common/HashUtils.h" |
| #include "dawn_native/Device.h" |
| #include "dawn_native/ValidationUtils_autogen.h" |
| |
| #include <functional> |
| |
| namespace dawn_native { |
| |
| MaybeError ValidateBindGroupLayoutDescriptor(DeviceBase*, |
| const BindGroupLayoutDescriptor* descriptor) { |
| if (descriptor->nextInChain != nullptr) { |
| return DAWN_VALIDATION_ERROR("nextInChain must be nullptr"); |
| } |
| |
| std::bitset<kMaxBindingsPerGroup> bindingsSet; |
| for (uint32_t i = 0; i < descriptor->numBindings; ++i) { |
| auto& binding = descriptor->bindings[i]; |
| DAWN_TRY(ValidateShaderStageBit(binding.visibility)); |
| DAWN_TRY(ValidateBindingType(binding.type)); |
| |
| if (binding.binding > kMaxBindingsPerGroup) { |
| return DAWN_VALIDATION_ERROR("some binding index exceeds the maximum value"); |
| } |
| if (bindingsSet[binding.binding]) { |
| return DAWN_VALIDATION_ERROR("some binding index was specified more than once"); |
| } |
| bindingsSet.set(binding.binding); |
| } |
| return {}; |
| } |
| |
| namespace { |
| size_t HashBindingInfo(const BindGroupLayoutBase::LayoutBindingInfo& info) { |
| size_t hash = Hash(info.mask); |
| |
| for (uint32_t binding : IterateBitSet(info.mask)) { |
| HashCombine(&hash, info.visibilities[binding], info.types[binding]); |
| } |
| |
| return hash; |
| } |
| |
| bool operator==(const BindGroupLayoutBase::LayoutBindingInfo& a, |
| const BindGroupLayoutBase::LayoutBindingInfo& b) { |
| if (a.mask != b.mask) { |
| return false; |
| } |
| |
| for (uint32_t binding : IterateBitSet(a.mask)) { |
| if ((a.visibilities[binding] != b.visibilities[binding]) || |
| (a.types[binding] != b.types[binding])) { |
| return false; |
| } |
| } |
| |
| return true; |
| } |
| } // namespace |
| |
| // BindGroupLayoutBase |
| |
| BindGroupLayoutBase::BindGroupLayoutBase(DeviceBase* device, |
| const BindGroupLayoutDescriptor* descriptor, |
| bool blueprint) |
| : ObjectBase(device), mIsBlueprint(blueprint) { |
| for (uint32_t i = 0; i < descriptor->numBindings; ++i) { |
| auto& binding = descriptor->bindings[i]; |
| |
| uint32_t index = binding.binding; |
| mBindingInfo.visibilities[index] = binding.visibility; |
| mBindingInfo.types[index] = binding.type; |
| |
| ASSERT(!mBindingInfo.mask[index]); |
| mBindingInfo.mask.set(index); |
| } |
| } |
| |
| BindGroupLayoutBase::~BindGroupLayoutBase() { |
| // Do not uncache the actual cached object if we are a blueprint |
| if (!mIsBlueprint) { |
| GetDevice()->UncacheBindGroupLayout(this); |
| } |
| } |
| |
| const BindGroupLayoutBase::LayoutBindingInfo& BindGroupLayoutBase::GetBindingInfo() const { |
| return mBindingInfo; |
| } |
| |
| // BindGroupLayoutCacheFuncs |
| |
| size_t BindGroupLayoutCacheFuncs::operator()(const BindGroupLayoutBase* bgl) const { |
| return HashBindingInfo(bgl->GetBindingInfo()); |
| } |
| |
| bool BindGroupLayoutCacheFuncs::operator()(const BindGroupLayoutBase* a, |
| const BindGroupLayoutBase* b) const { |
| return a->GetBindingInfo() == b->GetBindingInfo(); |
| } |
| |
| } // namespace dawn_native |