90 lines
3.1 KiB
C++
90 lines
3.1 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/PipelineLayout.h"
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#include "common/Assert.h"
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#include "dawn_native/BindGroupLayout.h"
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#include "dawn_native/Device.h"
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namespace dawn_native {
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MaybeError ValidatePipelineLayoutDescriptor(DeviceBase* device,
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const PipelineLayoutDescriptor* 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 (descriptor->bindGroupLayoutCount > kMaxBindGroups) {
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return DAWN_VALIDATION_ERROR("too many bind group layouts");
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}
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for (uint32_t i = 0; i < descriptor->bindGroupLayoutCount; ++i) {
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DAWN_TRY(device->ValidateObject(descriptor->bindGroupLayouts[i]));
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}
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return {};
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}
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// PipelineLayoutBase
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PipelineLayoutBase::PipelineLayoutBase(DeviceBase* device,
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const PipelineLayoutDescriptor* descriptor)
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: ObjectBase(device) {
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ASSERT(descriptor->bindGroupLayoutCount <= kMaxBindGroups);
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for (uint32_t group = 0; group < descriptor->bindGroupLayoutCount; ++group) {
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mBindGroupLayouts[group] = descriptor->bindGroupLayouts[group];
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mMask.set(group);
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}
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}
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PipelineLayoutBase::PipelineLayoutBase(DeviceBase* device, ObjectBase::ErrorTag tag)
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: ObjectBase(device, tag) {
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}
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// static
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PipelineLayoutBase* PipelineLayoutBase::MakeError(DeviceBase* device) {
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return new PipelineLayoutBase(device, ObjectBase::kError);
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}
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const BindGroupLayoutBase* PipelineLayoutBase::GetBindGroupLayout(size_t group) const {
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ASSERT(!IsError());
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ASSERT(group < kMaxBindGroups);
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ASSERT(mMask[group]);
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return mBindGroupLayouts[group].Get();
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}
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const std::bitset<kMaxBindGroups> PipelineLayoutBase::GetBindGroupLayoutsMask() const {
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ASSERT(!IsError());
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return mMask;
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}
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std::bitset<kMaxBindGroups> PipelineLayoutBase::InheritedGroupsMask(
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const PipelineLayoutBase* other) const {
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ASSERT(!IsError());
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return {(1 << GroupsInheritUpTo(other)) - 1u};
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}
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uint32_t PipelineLayoutBase::GroupsInheritUpTo(const PipelineLayoutBase* other) const {
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ASSERT(!IsError());
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for (uint32_t i = 0; i < kMaxBindGroups; ++i) {
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if (!mMask[i] || mBindGroupLayouts[i].Get() != other->mBindGroupLayouts[i].Get()) {
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return i;
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}
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}
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return kMaxBindGroups;
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}
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} // namespace dawn_native
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