dom/webgpu/Texture.h

   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_Texture_H_
   7 #define GPU_Texture_H_
   8
   9 #include <cstdint>
  10 #include "mozilla/WeakPtr.h"
  11 #include "nsWrapperCache.h"
  12 #include "ObjectModel.h"
  13 #include "mozilla/webgpu/WebGPUTypes.h"
  14 #include "mozilla/webgpu/ffi/wgpu.h"
  15
  16 namespace mozilla {
  17 namespace dom {
  18 struct GPUTextureDescriptor;
  19 struct GPUTextureViewDescriptor;
  20 enum class GPUTextureDimension : uint8_t;
  21 enum class GPUTextureFormat : uint8_t;
  22 enum class GPUTextureUsageFlags : uint32_t;
  23 }  // namespace dom
  24
  25 namespace webgpu {
  26
  27 class CanvasContext;
  28 class Device;
  29 class TextureView;
  30
  31 class Texture final : public ObjectBase, public ChildOf<Device> {
  32  public:
  33   GPU_DECL_CYCLE_COLLECTION(Texture)
  34   GPU_DECL_JS_WRAP(Texture)
  35
  36   Texture(Device* const aParent, RawId aId,
  37           const dom::GPUTextureDescriptor& aDesc);
  38   Device* GetParentDevice() { return mParent; }
  39   const RawId mId;
  40   const dom::GPUTextureFormat mFormat;
  41   const Maybe<uint8_t> mBytesPerBlock;
  42
  43   WeakPtr<CanvasContext> mTargetContext;
  44
  45  private:
  46   virtual ~Texture();
  47   void Cleanup();
  48
  49   const ffi::WGPUExtent3d mSize;
  50   const uint32_t mMipLevelCount;
  51   const uint32_t mSampleCount;
  52   const dom::GPUTextureDimension mDimension;
  53   const uint32_t mUsage;
  54
  55  public:
  56   already_AddRefed<TextureView> CreateView(
  57       const dom::GPUTextureViewDescriptor& aDesc);
  58   void Destroy();
  59
  60   uint32_t Width() const { return mSize.width; }
  61   uint32_t Height() const { return mSize.height; }
  62   uint32_t DepthOrArrayLayers() const { return mSize.depth_or_array_layers; }
  63   uint32_t MipLevelCount() const { return mMipLevelCount; }
  64   uint32_t SampleCount() const { return mSampleCount; }
  65   dom::GPUTextureDimension Dimension() const { return mDimension; }
  66   dom::GPUTextureFormat Format() const { return mFormat; }
  67   uint32_t Usage() const { return mUsage; }
  68 };
  69
  70 }  // namespace webgpu
  71 }  // namespace mozilla
  72
  73 #endif  // GPU_Texture_H_