blob: b9306b7501eadacc1d48b8a4a021acdc331efc39 [file] [log] [blame]
// 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