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// Copyright 2020 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/BindingInfo.h"
#include "dawn_native/ChainUtils_autogen.h"
namespace dawn_native {
void IncrementBindingCounts(BindingCounts* bindingCounts, const BindGroupLayoutEntry& entry) {
bindingCounts->totalCount += 1;
uint32_t PerStageBindingCounts::*perStageBindingCountMember = nullptr;
if (entry.buffer.type != wgpu::BufferBindingType::Undefined) {
++bindingCounts->bufferCount;
const BufferBindingLayout& buffer = entry.buffer;
if (buffer.minBindingSize == 0) {
++bindingCounts->unverifiedBufferCount;
}
switch (buffer.type) {
case wgpu::BufferBindingType::Uniform:
if (buffer.hasDynamicOffset) {
++bindingCounts->dynamicUniformBufferCount;
}
perStageBindingCountMember = &PerStageBindingCounts::uniformBufferCount;
break;
case wgpu::BufferBindingType::Storage:
case kInternalStorageBufferBinding:
case wgpu::BufferBindingType::ReadOnlyStorage:
if (buffer.hasDynamicOffset) {
++bindingCounts->dynamicStorageBufferCount;
}
perStageBindingCountMember = &PerStageBindingCounts::storageBufferCount;
break;
case wgpu::BufferBindingType::Undefined:
// Can't get here due to the enclosing if statement.
UNREACHABLE();
break;
}
} else if (entry.sampler.type != wgpu::SamplerBindingType::Undefined) {
perStageBindingCountMember = &PerStageBindingCounts::samplerCount;
} else if (entry.texture.sampleType != wgpu::TextureSampleType::Undefined) {
perStageBindingCountMember = &PerStageBindingCounts::sampledTextureCount;
} else if (entry.storageTexture.access != wgpu::StorageTextureAccess::Undefined) {
perStageBindingCountMember = &PerStageBindingCounts::storageTextureCount;
} else {
const ExternalTextureBindingLayout* externalTextureBindingLayout;
FindInChain(entry.nextInChain, &externalTextureBindingLayout);
if (externalTextureBindingLayout != nullptr) {
perStageBindingCountMember = &PerStageBindingCounts::externalTextureCount;
}
}
ASSERT(perStageBindingCountMember != nullptr);
for (SingleShaderStage stage : IterateStages(entry.visibility)) {
++(bindingCounts->perStage[stage].*perStageBindingCountMember);
}
}
void AccumulateBindingCounts(BindingCounts* bindingCounts, const BindingCounts& rhs) {
bindingCounts->totalCount += rhs.totalCount;
bindingCounts->bufferCount += rhs.bufferCount;
bindingCounts->unverifiedBufferCount += rhs.unverifiedBufferCount;
bindingCounts->dynamicUniformBufferCount += rhs.dynamicUniformBufferCount;
bindingCounts->dynamicStorageBufferCount += rhs.dynamicStorageBufferCount;
for (SingleShaderStage stage : IterateStages(kAllStages)) {
bindingCounts->perStage[stage].sampledTextureCount +=
rhs.perStage[stage].sampledTextureCount;
bindingCounts->perStage[stage].samplerCount += rhs.perStage[stage].samplerCount;
bindingCounts->perStage[stage].storageBufferCount +=
rhs.perStage[stage].storageBufferCount;
bindingCounts->perStage[stage].storageTextureCount +=
rhs.perStage[stage].storageTextureCount;
bindingCounts->perStage[stage].uniformBufferCount +=
rhs.perStage[stage].uniformBufferCount;
bindingCounts->perStage[stage].externalTextureCount +=
rhs.perStage[stage].externalTextureCount;
}
}
MaybeError ValidateBindingCounts(const BindingCounts& bindingCounts) {
if (bindingCounts.dynamicUniformBufferCount > kMaxDynamicUniformBuffersPerPipelineLayout) {
return DAWN_VALIDATION_ERROR(
"The number of dynamic uniform buffers exceeds the maximum per-pipeline-layout "
"limit");
}
if (bindingCounts.dynamicStorageBufferCount > kMaxDynamicStorageBuffersPerPipelineLayout) {
return DAWN_VALIDATION_ERROR(
"The number of dynamic storage buffers exceeds the maximum per-pipeline-layout "
"limit");
}
for (SingleShaderStage stage : IterateStages(kAllStages)) {
if (bindingCounts.perStage[stage].sampledTextureCount >
kMaxSampledTexturesPerShaderStage) {
return DAWN_VALIDATION_ERROR(
"The number of sampled textures exceeds the maximum "
"per-stage limit.");
}
// The per-stage number of external textures is bound by the maximum sampled textures
// per stage.
if (bindingCounts.perStage[stage].externalTextureCount >
kMaxSampledTexturesPerShaderStage / kSampledTexturesPerExternalTexture) {
return DAWN_VALIDATION_ERROR(
"The number of external textures exceeds the maximum "
"per-stage limit.");
}
if (bindingCounts.perStage[stage].sampledTextureCount +
(bindingCounts.perStage[stage].externalTextureCount *
kSampledTexturesPerExternalTexture) >
kMaxSampledTexturesPerShaderStage) {
return DAWN_VALIDATION_ERROR(
"The combination of sampled textures and external textures exceeds the maximum "
"per-stage limit.");
}
if (bindingCounts.perStage[stage].samplerCount > kMaxSamplersPerShaderStage) {
return DAWN_VALIDATION_ERROR(
"The number of samplers exceeds the maximum per-stage limit.");
}
if (bindingCounts.perStage[stage].samplerCount +
(bindingCounts.perStage[stage].externalTextureCount *
kSamplersPerExternalTexture) >
kMaxSamplersPerShaderStage) {
return DAWN_VALIDATION_ERROR(
"The combination of samplers and external textures exceeds the maximum "
"per-stage limit.");
}
if (bindingCounts.perStage[stage].storageBufferCount >
kMaxStorageBuffersPerShaderStage) {
return DAWN_VALIDATION_ERROR(
"The number of storage buffers exceeds the maximum per-stage limit.");
}
if (bindingCounts.perStage[stage].storageTextureCount >
kMaxStorageTexturesPerShaderStage) {
return DAWN_VALIDATION_ERROR(
"The number of storage textures exceeds the maximum per-stage limit.");
}
if (bindingCounts.perStage[stage].uniformBufferCount >
kMaxUniformBuffersPerShaderStage) {
return DAWN_VALIDATION_ERROR(
"The number of uniform buffers exceeds the maximum per-stage limit.");
}
if (bindingCounts.perStage[stage].uniformBufferCount +
(bindingCounts.perStage[stage].externalTextureCount *
kUniformsPerExternalTexture) >
kMaxUniformBuffersPerShaderStage) {
return DAWN_VALIDATION_ERROR(
"The combination of uniform buffers and external textures exceeds the maximum "
"per-stage limit.");
}
}
return {};
}
} // namespace dawn_native