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// 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.
#ifndef SRC_DAWN_NATIVE_COMMANDBUFFERSTATETRACKER_H_
#define SRC_DAWN_NATIVE_COMMANDBUFFERSTATETRACKER_H_
#include <vector>
#include "dawn/common/Constants.h"
#include "dawn/common/ityp_array.h"
#include "dawn/common/ityp_bitset.h"
#include "dawn/native/BindingInfo.h"
#include "dawn/native/Error.h"
#include "dawn/native/Forward.h"
namespace dawn::native {
class CommandBufferStateTracker {
public:
CommandBufferStateTracker();
CommandBufferStateTracker(const CommandBufferStateTracker&);
CommandBufferStateTracker(CommandBufferStateTracker&&);
~CommandBufferStateTracker();
CommandBufferStateTracker& operator=(const CommandBufferStateTracker&);
CommandBufferStateTracker& operator=(CommandBufferStateTracker&&);
// Non-state-modifying validation functions
MaybeError ValidateCanDispatch();
MaybeError ValidateCanDraw();
MaybeError ValidateCanDrawIndexed();
MaybeError ValidateBufferInRangeForVertexBuffer(uint32_t vertexCount, uint32_t firstVertex);
MaybeError ValidateBufferInRangeForInstanceBuffer(uint32_t instanceCount,
uint32_t firstInstance);
MaybeError ValidateIndexBufferInRange(uint32_t indexCount, uint32_t firstIndex);
// State-modifying methods
void SetComputePipeline(ComputePipelineBase* pipeline);
void SetRenderPipeline(RenderPipelineBase* pipeline);
void SetBindGroup(BindGroupIndex index,
BindGroupBase* bindgroup,
uint32_t dynamicOffsetCount,
const uint32_t* dynamicOffsets);
void SetIndexBuffer(wgpu::IndexFormat format, uint64_t size);
void SetVertexBuffer(VertexBufferSlot slot, uint64_t size);
static constexpr size_t kNumAspects = 4;
using ValidationAspects = std::bitset<kNumAspects>;
BindGroupBase* GetBindGroup(BindGroupIndex index) const;
const std::vector<uint32_t>& GetDynamicOffsets(BindGroupIndex index) const;
bool HasPipeline() const;
RenderPipelineBase* GetRenderPipeline() const;
ComputePipelineBase* GetComputePipeline() const;
PipelineLayoutBase* GetPipelineLayout() const;
wgpu::IndexFormat GetIndexFormat() const;
uint64_t GetIndexBufferSize() const;
private:
MaybeError ValidateOperation(ValidationAspects requiredAspects);
void RecomputeLazyAspects(ValidationAspects aspects);
MaybeError CheckMissingAspects(ValidationAspects aspects);
void SetPipelineCommon(PipelineBase* pipeline);
ValidationAspects mAspects;
ityp::array<BindGroupIndex, BindGroupBase*, kMaxBindGroups> mBindgroups = {};
ityp::array<BindGroupIndex, std::vector<uint32_t>, kMaxBindGroups> mDynamicOffsets = {};
ityp::bitset<VertexBufferSlot, kMaxVertexBuffers> mVertexBufferSlotsUsed;
bool mIndexBufferSet = false;
wgpu::IndexFormat mIndexFormat;
uint64_t mIndexBufferSize = 0;
ityp::array<VertexBufferSlot, uint64_t, kMaxVertexBuffers> mVertexBufferSizes = {};
PipelineLayoutBase* mLastPipelineLayout = nullptr;
PipelineBase* mLastPipeline = nullptr;
const RequiredBufferSizes* mMinBufferSizes = nullptr;
};
} // namespace dawn::native
#endif // SRC_DAWN_NATIVE_COMMANDBUFFERSTATETRACKER_H_