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RenderPassEncoder.h (4521B)

      1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
      2 /* This Source Code Form is subject to the terms of the Mozilla Public
      3 * License, v. 2.0. If a copy of the MPL was not distributed with this
      4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
      5 
      6 #ifndef GPU_RenderPassEncoder_H_
      7 #define GPU_RenderPassEncoder_H_
      8 
      9 #include "CanvasContext.h"
     10 #include "ObjectModel.h"
     11 #include "mozilla/dom/TypedArray.h"
     12 
     13 namespace mozilla {
     14 class ErrorResult;
     15 
     16 namespace dom {
     17 class DoubleSequenceOrGPUColorDict;
     18 enum class GPUIndexFormat : uint8_t;
     19 struct GPURenderPassDescriptor;
     20 template <typename T>
     21 class Sequence;
     22 namespace binding_detail {
     23 template <typename T>
     24 class AutoSequence;
     25 }  // namespace binding_detail
     26 }  // namespace dom
     27 namespace webgpu {
     28 namespace ffi {
     29 struct WGPURecordedRenderPass;
     30 }  // namespace ffi
     31 
     32 class BindGroup;
     33 class Buffer;
     34 class CommandEncoder;
     35 class RenderBundle;
     36 class RenderPipeline;
     37 class TextureView;
     38 
     39 struct ffiWGPURenderPassDeleter {
     40  void operator()(ffi::WGPURecordedRenderPass*);
     41 };
     42 
     43 class RenderPassEncoder final : public nsWrapperCache,
     44                                public ObjectBase,
     45                                public ChildOf<CommandEncoder> {
     46 public:
     47  GPU_DECL_CYCLE_COLLECTION(RenderPassEncoder)
     48  GPU_DECL_JS_WRAP(RenderPassEncoder)
     49 
     50  RenderPassEncoder(CommandEncoder* const aParent, RawId aId,
     51                    const dom::GPURenderPassDescriptor& aDesc);
     52 
     53 protected:
     54  virtual ~RenderPassEncoder();
     55 
     56  std::unique_ptr<ffi::WGPURecordedRenderPass, ffiWGPURenderPassDeleter> mPass;
     57  // keep all the used objects alive while the pass is recorded
     58  nsTArray<RefPtr<const BindGroup>> mUsedBindGroups;
     59  nsTArray<RefPtr<const Buffer>> mUsedBuffers;
     60  nsTArray<RefPtr<const RenderPipeline>> mUsedPipelines;
     61  nsTArray<RefPtr<const TextureView>> mUsedTextureViews;
     62  nsTArray<RefPtr<const RenderBundle>> mUsedRenderBundles;
     63 
     64  // The canvas contexts of any canvas textures used in bind groups of this
     65  // render pass.
     66  CanvasContextArray mUsedCanvasContexts;
     67 
     68  // programmable pass encoder
     69 private:
     70  bool mValid = true;
     71 
     72  void SetBindGroup(uint32_t aSlot, BindGroup* const aBindGroup,
     73                    const uint32_t* aDynamicOffsets,
     74                    size_t aDynamicOffsetsLength);
     75 
     76 public:
     77  void Invalidate() { mValid = false; }
     78 
     79  void SetBindGroup(uint32_t aSlot, BindGroup* const aBindGroup,
     80                    const dom::Sequence<uint32_t>& aDynamicOffsets,
     81                    ErrorResult& aRv);
     82  void SetBindGroup(uint32_t aSlot, BindGroup* const aBindGroup,
     83                    const dom::Uint32Array& aDynamicOffsetsData,
     84                    uint64_t aDynamicOffsetsDataStart,
     85                    uint64_t aDynamicOffsetsDataLength, ErrorResult& aRv);
     86  // render encoder base
     87  void SetPipeline(const RenderPipeline& aPipeline);
     88  void SetIndexBuffer(const Buffer& aBuffer,
     89                      const dom::GPUIndexFormat& aIndexFormat, uint64_t aOffset,
     90                      const dom::Optional<uint64_t>& aSize);
     91  void SetVertexBuffer(uint32_t aSlot, const Buffer& aBuffer, uint64_t aOffset,
     92                       const dom::Optional<uint64_t>& aSize);
     93  void Draw(uint32_t aVertexCount, uint32_t aInstanceCount,
     94            uint32_t aFirstVertex, uint32_t aFirstInstance);
     95  void DrawIndexed(uint32_t aIndexCount, uint32_t aInstanceCount,
     96                   uint32_t aFirstIndex, int32_t aBaseVertex,
     97                   uint32_t aFirstInstance);
     98  void DrawIndirect(const Buffer& aIndirectBuffer, uint64_t aIndirectOffset);
     99  void DrawIndexedIndirect(const Buffer& aIndirectBuffer,
    100                           uint64_t aIndirectOffset);
    101  // self
    102  void SetViewport(float x, float y, float width, float height, float minDepth,
    103                   float maxDepth);
    104  void SetScissorRect(uint32_t x, uint32_t y, uint32_t width, uint32_t height);
    105  void SetBlendConstant(const dom::DoubleSequenceOrGPUColorDict& color);
    106  void SetStencilReference(uint32_t reference);
    107 
    108  void BeginOcclusionQuery(uint32_t queryIndex);
    109  void EndOcclusionQuery();
    110 
    111  void PushDebugGroup(const nsAString& aString);
    112  void PopDebugGroup();
    113  void InsertDebugMarker(const nsAString& aString);
    114 
    115  void ExecuteBundles(
    116      const dom::Sequence<OwningNonNull<RenderBundle>>& aBundles);
    117 
    118  void End();
    119 
    120  // helpers not defined by WebGPU
    121  mozilla::Span<const WeakPtr<CanvasContext>> GetCanvasContexts() const {
    122    return mUsedCanvasContexts;
    123  }
    124 };
    125 
    126 }  // namespace webgpu
    127 }  // namespace mozilla
    128 
    129 #endif  // GPU_RenderPassEncoder_H_