/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef GPU_ComputePassEncoder_H_
#define GPU_ComputePassEncoder_H_

#include "ObjectModel.h"
#include "mozilla/dom/TypedArray.h"
#include "mozilla/webgpu/CanvasContext.h"

namespace mozilla {
class ErrorResult;

namespace dom {
struct GPUComputePassDescriptor;
}

namespace webgpu {
namespace ffi {
struct WGPURecordedComputePass;
}  // namespace ffi

class BindGroup;
class Buffer;
class CommandEncoder;
class ComputePipeline;
class ExternalTexture;

class ComputePassEncoder final : public nsWrapperCache,
                                 public ObjectBase,
                                 public ChildOf<CommandEncoder> {
 public:
  GPU_DECL_CYCLE_COLLECTION(ComputePassEncoder)
  GPU_DECL_JS_WRAP(ComputePassEncoder)

  ComputePassEncoder(CommandEncoder* const aParent, RawId aId);

 private:
  virtual ~ComputePassEncoder();

  // The canvas contexts of any canvas textures used in bind groups of this
  // compute pass.
  CanvasContextArray mUsedCanvasContexts;
  nsTArray<RefPtr<ExternalTexture>> mExternalTextures;

 private:
  void SetBindGroup(uint32_t aSlot, BindGroup* const aBindGroup,
                    const uint32_t* aDynamicOffsets,
                    size_t aDynamicOffsetsLength);

 public:
  void SetBindGroup(uint32_t aSlot, BindGroup* const aBindGroup,
                    const dom::Sequence<uint32_t>& aDynamicOffsets,
                    ErrorResult& aRv);
  void SetBindGroup(uint32_t aSlot, BindGroup* const aBindGroup,
                    const dom::Uint32Array& aDynamicOffsetsData,
                    uint64_t aDynamicOffsetsDataStart,
                    uint64_t aDynamicOffsetsDataLength, ErrorResult& aRv);
  // self
  void SetPipeline(const ComputePipeline& aPipeline);

  void DispatchWorkgroups(uint32_t workgroupCountX, uint32_t workgroupCountY,
                          uint32_t workgroupCountZ);
  void DispatchWorkgroupsIndirect(const Buffer& aIndirectBuffer,
                                  uint64_t aIndirectOffset);

  void PushDebugGroup(const nsAString& aString);
  void PopDebugGroup();
  void InsertDebugMarker(const nsAString& aString);

  void End();

  // helpers not defined by WebGPU
  mozilla::Span<const WeakPtr<CanvasContext>> GetCanvasContexts() const {
    return mUsedCanvasContexts;
  }
};

}  // namespace webgpu
}  // namespace mozilla

#endif  // GPU_ComputePassEncoder_H_
