kc3-lang/angle/src/libANGLE/renderer/wgpu/SurfaceWgpu.h

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• Hash : 3cf7a604
  Author :
  Date : 2025-05-17T19:39:08
  

  WebGPU: Add extensions for importing external textures
  
  Add EGL_ANGLE_device_webgpu which exposes the adapter and device used
  by ANGLE internally.
  
  Add EGL_ANGLE_webgpu_texture_client_buffer which allows importing
  external WGPUTexture handles if they share the same device as ANGLE
  (queried from EGL_ANGLE_device_webgpu).
  
  Bug: angleproject:418022112
  Change-Id: I0683d36b84a0f8e0e9b68a5ec0d3aa8b7a95152c
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/6553063
  Reviewed-by: Corentin Wallez <cwallez@chromium.org>
  Commit-Queue: Geoff Lang <geofflang@chromium.org>
  

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• src/libANGLE/renderer/wgpu/SurfaceWgpu.h

• //
  // Copyright 2024 The ANGLE Project Authors. All rights reserved.
  // Use of this source code is governed by a BSD-style license that can be
  // found in the LICENSE file.
  //
  // SurfaceWgpu.h:
  //    Defines the class interface for SurfaceWgpu, implementing SurfaceImpl.
  //
  
  #ifndef LIBANGLE_RENDERER_WGPU_SURFACEWGPU_H_
  #define LIBANGLE_RENDERER_WGPU_SURFACEWGPU_H_
  
  #include "libANGLE/renderer/SurfaceImpl.h"
  
  #include "libANGLE/renderer/wgpu/RenderTargetWgpu.h"
  #include "libANGLE/renderer/wgpu/wgpu_helpers.h"
  
  #include <webgpu/webgpu.h>
  
  namespace rx
  {
  
  class SurfaceWgpu : public SurfaceImpl
  {
    public:
      SurfaceWgpu(const egl::SurfaceState &surfaceState);
      ~SurfaceWgpu() override;
  
    protected:
      struct AttachmentImage
      {
          webgpu::ImageHelper texture;
          RenderTargetWgpu renderTarget;
      };
      angle::Result createDepthStencilAttachment(const egl::Display *display,
                                                 uint32_t width,
                                                 uint32_t height,
                                                 const webgpu::Format &webgpuFormat,
                                                 webgpu::DeviceHandle device,
                                                 AttachmentImage *outDepthStencilAttachment);
  };
  
  class OffscreenSurfaceWgpu : public SurfaceWgpu
  {
    public:
      OffscreenSurfaceWgpu(const egl::SurfaceState &surfaceState,
                           EGLenum clientBufferType,
                           EGLClientBuffer clientBuffer);
      ~OffscreenSurfaceWgpu() override;
  
      egl::Error initialize(const egl::Display *display) override;
      egl::Error swap(const gl::Context *context, SurfaceSwapFeedback *feedback) override;
      egl::Error bindTexImage(const gl::Context *context,
                              gl::Texture *texture,
                              EGLint buffer) override;
      egl::Error releaseTexImage(const gl::Context *context, EGLint buffer) override;
      void setSwapInterval(const egl::Display *display, EGLint interval) override;
  
      // width and height can change with client window resizing
      EGLint getWidth() const override;
      EGLint getHeight() const override;
  
      EGLint getSwapBehavior() const override;
  
      angle::Result initializeContents(const gl::Context *context,
                                       GLenum binding,
                                       const gl::ImageIndex &imageIndex) override;
  
      egl::Error attachToFramebuffer(const gl::Context *context,
                                     gl::Framebuffer *framebuffer) override;
      egl::Error detachFromFramebuffer(const gl::Context *context,
                                       gl::Framebuffer *framebuffer) override;
  
      angle::Result getAttachmentRenderTarget(const gl::Context *context,
                                              GLenum binding,
                                              const gl::ImageIndex &imageIndex,
                                              GLsizei samples,
                                              FramebufferAttachmentRenderTarget **rtOut) override;
  
    private:
      angle::Result initializeImpl(const egl::Display *display);
  
      EGLint mWidth;
      EGLint mHeight;
  
      EGLenum mClientBufferType     = EGL_NONE;
      EGLClientBuffer mClientBuffer = nullptr;
  
      AttachmentImage mColorAttachment;
      AttachmentImage mDepthStencilAttachment;
  };
  
  class WindowSurfaceWgpu : public SurfaceWgpu
  {
    public:
      WindowSurfaceWgpu(const egl::SurfaceState &surfaceState, EGLNativeWindowType window);
      ~WindowSurfaceWgpu() override;
  
      egl::Error initialize(const egl::Display *display) override;
      void destroy(const egl::Display *display) override;
      egl::Error swap(const gl::Context *context, SurfaceSwapFeedback *feedback) override;
      egl::Error bindTexImage(const gl::Context *context,
                              gl::Texture *texture,
                              EGLint buffer) override;
      egl::Error releaseTexImage(const gl::Context *context, EGLint buffer) override;
      void setSwapInterval(const egl::Display *display, EGLint interval) override;
  
      // width and height can change with client window resizing
      EGLint getWidth() const override;
      EGLint getHeight() const override;
  
      EGLint getSwapBehavior() const override;
  
      angle::Result initializeContents(const gl::Context *context,
                                       GLenum binding,
                                       const gl::ImageIndex &imageIndex) override;
  
      egl::Error attachToFramebuffer(const gl::Context *context,
                                     gl::Framebuffer *framebuffer) override;
      egl::Error detachFromFramebuffer(const gl::Context *context,
                                       gl::Framebuffer *framebuffer) override;
  
      angle::Result getAttachmentRenderTarget(const gl::Context *context,
                                              GLenum binding,
                                              const gl::ImageIndex &imageIndex,
                                              GLsizei samples,
                                              FramebufferAttachmentRenderTarget **rtOut) override;
  
    protected:
      EGLNativeWindowType getNativeWindow() const { return mNativeWindow; }
  
    private:
      angle::Result initializeImpl(const egl::Display *display);
  
      angle::Result swapImpl(const gl::Context *context);
  
      angle::Result configureSurface(const egl::Display *display, const gl::Extents &size);
      angle::Result updateCurrentTexture(const egl::Display *display);
  
      virtual angle::Result createWgpuSurface(const egl::Display *display,
                                              webgpu::SurfaceHandle *outSurface) = 0;
      virtual angle::Result getCurrentWindowSize(const egl::Display *display,
                                                 gl::Extents *outSize)   = 0;
  
      EGLNativeWindowType mNativeWindow;
      webgpu::SurfaceHandle mSurface;
  
      const webgpu::Format *mSurfaceTextureFormat = nullptr;
      WGPUTextureUsage mSurfaceTextureUsage;
      WGPUPresentMode mPresentMode;
  
      const webgpu::Format *mDepthStencilFormat = nullptr;
  
      gl::Extents mCurrentSurfaceSize;
  
      AttachmentImage mColorAttachment;
      AttachmentImage mDepthStencilAttachment;
  };
  
  WindowSurfaceWgpu *CreateWgpuWindowSurface(const egl::SurfaceState &surfaceState,
                                             EGLNativeWindowType window);
  
  }  // namespace rx
  
  #endif  // LIBANGLE_RENDERER_WGPU_SURFACEWGPU_H_
  

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