135 lines
4.8 KiB
C++
135 lines
4.8 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/BindGroupLayout.h"
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#include "common/BitSetIterator.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 <functional>
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namespace dawn_native {
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MaybeError ValidateBindGroupLayoutDescriptor(DeviceBase*,
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const BindGroupLayoutDescriptor* 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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std::bitset<kMaxBindingsPerGroup> bindingsSet;
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for (uint32_t i = 0; i < descriptor->bindingCount; ++i) {
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auto& binding = descriptor->bindings[i];
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DAWN_TRY(ValidateShaderStageBit(binding.visibility));
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DAWN_TRY(ValidateBindingType(binding.type));
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if (binding.binding >= kMaxBindingsPerGroup) {
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return DAWN_VALIDATION_ERROR("some binding index exceeds the maximum value");
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}
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if (bindingsSet[binding.binding]) {
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return DAWN_VALIDATION_ERROR("some binding index was specified more than once");
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}
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bindingsSet.set(binding.binding);
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}
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return {};
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}
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namespace {
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size_t HashBindingInfo(const BindGroupLayoutBase::LayoutBindingInfo& info) {
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size_t hash = Hash(info.mask);
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for (uint32_t binding : IterateBitSet(info.mask)) {
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HashCombine(&hash, info.visibilities[binding], info.types[binding]);
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}
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return hash;
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}
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bool operator==(const BindGroupLayoutBase::LayoutBindingInfo& a,
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const BindGroupLayoutBase::LayoutBindingInfo& b) {
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if (a.mask != b.mask) {
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return false;
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}
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for (uint32_t binding : IterateBitSet(a.mask)) {
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if ((a.visibilities[binding] != b.visibilities[binding]) ||
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(a.types[binding] != b.types[binding])) {
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return false;
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}
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}
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return true;
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}
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} // namespace
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// BindGroupLayoutBase
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BindGroupLayoutBase::BindGroupLayoutBase(DeviceBase* device,
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const BindGroupLayoutDescriptor* descriptor,
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bool blueprint)
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: ObjectBase(device), mIsBlueprint(blueprint) {
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for (uint32_t i = 0; i < descriptor->bindingCount; ++i) {
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auto& binding = descriptor->bindings[i];
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uint32_t index = binding.binding;
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mBindingInfo.visibilities[index] = binding.visibility;
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mBindingInfo.types[index] = binding.type;
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if (binding.type == dawn::BindingType::DynamicUniformBuffer ||
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binding.type == dawn::BindingType::DynamicStorageBuffer) {
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mDynamicBufferCount++;
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}
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ASSERT(!mBindingInfo.mask[index]);
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mBindingInfo.mask.set(index);
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}
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}
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BindGroupLayoutBase::BindGroupLayoutBase(DeviceBase* device, ObjectBase::ErrorTag tag)
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: ObjectBase(device, tag), mIsBlueprint(true) {
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}
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BindGroupLayoutBase::~BindGroupLayoutBase() {
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// Do not uncache the actual cached object if we are a blueprint
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if (!mIsBlueprint && !IsError()) {
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GetDevice()->UncacheBindGroupLayout(this);
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}
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}
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// static
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BindGroupLayoutBase* BindGroupLayoutBase::MakeError(DeviceBase* device) {
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return new BindGroupLayoutBase(device, ObjectBase::kError);
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}
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const BindGroupLayoutBase::LayoutBindingInfo& BindGroupLayoutBase::GetBindingInfo() const {
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ASSERT(!IsError());
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return mBindingInfo;
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}
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size_t BindGroupLayoutBase::HashFunc::operator()(const BindGroupLayoutBase* bgl) const {
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return HashBindingInfo(bgl->mBindingInfo);
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}
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bool BindGroupLayoutBase::EqualityFunc::operator()(const BindGroupLayoutBase* a,
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const BindGroupLayoutBase* b) const {
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return a->mBindingInfo == b->mBindingInfo;
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}
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uint32_t BindGroupLayoutBase::GetDynamicBufferCount() const {
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return mDynamicBufferCount;
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}
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} // namespace dawn_native
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