| // 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/PipelineLayout.h" |
| |
| #include "common/Assert.h" |
| #include "dawn_native/BindGroupLayout.h" |
| #include "dawn_native/Device.h" |
| |
| namespace dawn_native { |
| |
| MaybeError ValidatePipelineLayoutDescriptor(DeviceBase*, |
| const PipelineLayoutDescriptor* descriptor) { |
| if (descriptor->nextInChain != nullptr) { |
| return DAWN_VALIDATION_ERROR("nextInChain must be nullptr"); |
| } |
| |
| if (descriptor->numBindGroupLayouts > kMaxBindGroups) { |
| return DAWN_VALIDATION_ERROR("too many bind group layouts"); |
| } |
| |
| for (uint32_t i = 0; i < descriptor->numBindGroupLayouts; ++i) { |
| if (descriptor->bindGroupLayouts[i] == nullptr) { |
| return DAWN_VALIDATION_ERROR("bind group layouts may not be null"); |
| } |
| } |
| return {}; |
| } |
| |
| // PipelineLayoutBase |
| |
| PipelineLayoutBase::PipelineLayoutBase(DeviceBase* device, |
| const PipelineLayoutDescriptor* descriptor) |
| : ObjectBase(device) { |
| ASSERT(descriptor->numBindGroupLayouts <= kMaxBindGroups); |
| for (uint32_t group = 0; group < descriptor->numBindGroupLayouts; ++group) { |
| mBindGroupLayouts[group] = descriptor->bindGroupLayouts[group]; |
| mMask.set(group); |
| } |
| } |
| |
| const BindGroupLayoutBase* PipelineLayoutBase::GetBindGroupLayout(size_t group) const { |
| ASSERT(group < kMaxBindGroups); |
| return mBindGroupLayouts[group].Get(); |
| } |
| |
| const std::bitset<kMaxBindGroups> PipelineLayoutBase::GetBindGroupLayoutsMask() const { |
| return mMask; |
| } |
| |
| std::bitset<kMaxBindGroups> PipelineLayoutBase::InheritedGroupsMask( |
| const PipelineLayoutBase* other) const { |
| return {(1 << GroupsInheritUpTo(other)) - 1u}; |
| } |
| |
| uint32_t PipelineLayoutBase::GroupsInheritUpTo(const PipelineLayoutBase* other) const { |
| for (uint32_t i = 0; i < kMaxBindGroups; ++i) { |
| if (!mMask[i] || mBindGroupLayouts[i].Get() != other->mBindGroupLayouts[i].Get()) { |
| return i; |
| } |
| } |
| return kMaxBindGroups + 1; |
| } |
| |
| } // namespace dawn_native |