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// Copyright 2018 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/ComputePassEncoder.h"
#include "dawn_native/Buffer.h"
#include "dawn_native/CommandEncoder.h"
#include "dawn_native/CommandValidation.h"
#include "dawn_native/Commands.h"
#include "dawn_native/ComputePipeline.h"
#include "dawn_native/Device.h"
#include "dawn_native/PassResourceUsageTracker.h"
#include "dawn_native/QuerySet.h"
namespace dawn_native {
namespace {
MaybeError ValidatePerDimensionDispatchSizeLimit(uint32_t size) {
if (size > kMaxComputePerDimensionDispatchSize) {
return DAWN_VALIDATION_ERROR("Dispatch size exceeds defined limits");
}
return {};
}
} // namespace
ComputePassEncoder::ComputePassEncoder(DeviceBase* device,
CommandEncoder* commandEncoder,
EncodingContext* encodingContext)
: ProgrammablePassEncoder(device, encodingContext), mCommandEncoder(commandEncoder) {
}
ComputePassEncoder::ComputePassEncoder(DeviceBase* device,
CommandEncoder* commandEncoder,
EncodingContext* encodingContext,
ErrorTag errorTag)
: ProgrammablePassEncoder(device, encodingContext, errorTag),
mCommandEncoder(commandEncoder) {
}
ComputePassEncoder* ComputePassEncoder::MakeError(DeviceBase* device,
CommandEncoder* commandEncoder,
EncodingContext* encodingContext) {
return new ComputePassEncoder(device, commandEncoder, encodingContext, ObjectBase::kError);
}
void ComputePassEncoder::APIEndPass() {
if (mEncodingContext->TryEncode(this, [&](CommandAllocator* allocator) -> MaybeError {
if (IsValidationEnabled()) {
DAWN_TRY(ValidateProgrammableEncoderEnd());
}
allocator->Allocate<EndComputePassCmd>(Command::EndComputePass);
return {};
})) {
mEncodingContext->ExitPass(this, mUsageTracker.AcquireResourceUsage());
}
}
void ComputePassEncoder::APIDispatch(uint32_t x, uint32_t y, uint32_t z) {
mEncodingContext->TryEncode(this, [&](CommandAllocator* allocator) -> MaybeError {
if (IsValidationEnabled()) {
DAWN_TRY(mCommandBufferState.ValidateCanDispatch());
DAWN_TRY(ValidatePerDimensionDispatchSizeLimit(x));
DAWN_TRY(ValidatePerDimensionDispatchSizeLimit(y));
DAWN_TRY(ValidatePerDimensionDispatchSizeLimit(z));
}
// Record the synchronization scope for Dispatch, which is just the current bindgroups.
AddDispatchSyncScope();
DispatchCmd* dispatch = allocator->Allocate<DispatchCmd>(Command::Dispatch);
dispatch->x = x;
dispatch->y = y;
dispatch->z = z;
return {};
});
}
void ComputePassEncoder::APIDispatchIndirect(BufferBase* indirectBuffer,
uint64_t indirectOffset) {
mEncodingContext->TryEncode(this, [&](CommandAllocator* allocator) -> MaybeError {
if (IsValidationEnabled()) {
DAWN_TRY(GetDevice()->ValidateObject(indirectBuffer));
DAWN_TRY(ValidateCanUseAs(indirectBuffer, wgpu::BufferUsage::Indirect));
DAWN_TRY(mCommandBufferState.ValidateCanDispatch());
// Indexed dispatches need a compute-shader based validation to check that the
// dispatch sizes aren't too big. Disallow them as unsafe until the validation is
// implemented.
if (GetDevice()->IsToggleEnabled(Toggle::DisallowUnsafeAPIs)) {
return DAWN_VALIDATION_ERROR(
"DispatchIndirect is disallowed because it doesn't validate that the "
"dispatch "
"size is valid yet.");
}
if (indirectOffset % 4 != 0) {
return DAWN_VALIDATION_ERROR("Indirect offset must be a multiple of 4");
}
if (indirectOffset >= indirectBuffer->GetSize() ||
indirectOffset + kDispatchIndirectSize > indirectBuffer->GetSize()) {
return DAWN_VALIDATION_ERROR("Indirect offset out of bounds");
}
}
// Record the synchronization scope for Dispatch, both the bindgroups and the indirect
// buffer.
SyncScopeUsageTracker scope;
scope.BufferUsedAs(indirectBuffer, wgpu::BufferUsage::Indirect);
mUsageTracker.AddReferencedBuffer(indirectBuffer);
AddDispatchSyncScope(std::move(scope));
DispatchIndirectCmd* dispatch =
allocator->Allocate<DispatchIndirectCmd>(Command::DispatchIndirect);
dispatch->indirectBuffer = indirectBuffer;
dispatch->indirectOffset = indirectOffset;
return {};
});
}
void ComputePassEncoder::APISetPipeline(ComputePipelineBase* pipeline) {
mEncodingContext->TryEncode(this, [&](CommandAllocator* allocator) -> MaybeError {
if (IsValidationEnabled()) {
DAWN_TRY(GetDevice()->ValidateObject(pipeline));
}
mCommandBufferState.SetComputePipeline(pipeline);
SetComputePipelineCmd* cmd =
allocator->Allocate<SetComputePipelineCmd>(Command::SetComputePipeline);
cmd->pipeline = pipeline;
return {};
});
}
void ComputePassEncoder::APISetBindGroup(uint32_t groupIndexIn,
BindGroupBase* group,
uint32_t dynamicOffsetCount,
const uint32_t* dynamicOffsets) {
mEncodingContext->TryEncode(this, [&](CommandAllocator* allocator) -> MaybeError {
BindGroupIndex groupIndex(groupIndexIn);
if (IsValidationEnabled()) {
DAWN_TRY(
ValidateSetBindGroup(groupIndex, group, dynamicOffsetCount, dynamicOffsets));
}
mUsageTracker.AddResourcesReferencedByBindGroup(group);
RecordSetBindGroup(allocator, groupIndex, group, dynamicOffsetCount, dynamicOffsets);
mCommandBufferState.SetBindGroup(groupIndex, group);
return {};
});
}
void ComputePassEncoder::APIWriteTimestamp(QuerySetBase* querySet, uint32_t queryIndex) {
mEncodingContext->TryEncode(this, [&](CommandAllocator* allocator) -> MaybeError {
if (IsValidationEnabled()) {
DAWN_TRY(GetDevice()->ValidateObject(querySet));
DAWN_TRY(ValidateTimestampQuery(querySet, queryIndex));
}
mCommandEncoder->TrackQueryAvailability(querySet, queryIndex);
WriteTimestampCmd* cmd =
allocator->Allocate<WriteTimestampCmd>(Command::WriteTimestamp);
cmd->querySet = querySet;
cmd->queryIndex = queryIndex;
return {};
});
}
void ComputePassEncoder::AddDispatchSyncScope(SyncScopeUsageTracker scope) {
PipelineLayoutBase* layout = mCommandBufferState.GetPipelineLayout();
for (BindGroupIndex i : IterateBitSet(layout->GetBindGroupLayoutsMask())) {
scope.AddBindGroup(mCommandBufferState.GetBindGroup(i));
}
mUsageTracker.AddDispatch(scope.AcquireSyncScopeUsage());
}
} // namespace dawn_native