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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 DAWNNATIVE_COMMANDBUFFERSTATETRACKER_H
#define DAWNNATIVE_COMMANDBUFFERSTATETRACKER_H
#include "common/Constants.h"
#include "common/ityp_array.h"
#include "common/ityp_bitset.h"
#include "dawn_native/BindingInfo.h"
#include "dawn_native/Error.h"
#include "dawn_native/Forward.h"
#include <map>
#include <set>
namespace dawn_native {
class CommandBufferStateTracker {
public:
// Non-state-modifying validation functions
MaybeError ValidateCanDispatch();
MaybeError ValidateCanDraw();
MaybeError ValidateCanDrawIndexed();
// State-modifying methods
void SetComputePipeline(ComputePipelineBase* pipeline);
void SetRenderPipeline(RenderPipelineBase* pipeline);
void SetBindGroup(BindGroupIndex index, BindGroupBase* bindgroup);
void SetIndexBuffer(wgpu::IndexFormat format);
void SetVertexBuffer(VertexBufferSlot slot);
static constexpr size_t kNumAspects = 4;
using ValidationAspects = std::bitset<kNumAspects>;
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::bitset<VertexBufferSlot, kMaxVertexBuffers> mVertexBufferSlotsUsed;
bool mIndexBufferSet = false;
wgpu::IndexFormat mIndexFormat;
PipelineLayoutBase* mLastPipelineLayout = nullptr;
RenderPipelineBase* mLastRenderPipeline = nullptr;
const RequiredBufferSizes* mMinBufferSizes = nullptr;
};
} // namespace dawn_native
#endif // DAWNNATIVE_COMMANDBUFFERSTATETRACKER_H