kc3-lang/angle/src/libANGLE/renderer/vulkan/SurfaceVk.h

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• Hash : f618c9e5
  Author :
  Date : 2018-02-15T14:45:40
  

  Vulkan: Add depth/stencil surfaces.
  
  This change lets us create egl::Surfaces from a D24S8 config. This is
  a bit hacky, because the spec only mandates 24 -or- 32 bit depth
  support, but not both or either individually. Will need follow-up work
  for proper EGL config setup.
  
  A single depth buffer is allocated for the entire set of swapchain
  images and is used with each. This also might be a problem if we're
  rendering to multiple frames at the same time. We'll likely have to
  revisit this in the future as well.
  
  This adds a new RenderTargetVk to the SurfaceVk class which points to
  the Depth/Stencil image. Since ImageViews must refer to either the
  depth or stencil, but not both, we'll need to address this when we
  get to implementing depth/stencil texture reads in shaders.
  
  Bug: angleproject:2357
  Change-Id: Ibed0eed7e1d0efb272758dbfc79fa2c5aa93997f
  Reviewed-on: https://chromium-review.googlesource.com/919761
  Reviewed-by: Yuly Novikov <ynovikov@chromium.org>
  Commit-Queue: Jamie Madill <jmadill@chromium.org>
  

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• src/libANGLE/renderer/vulkan/SurfaceVk.h

• //
  // Copyright 2016 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.
  //
  // SurfaceVk.h:
  //    Defines the class interface for SurfaceVk, implementing SurfaceImpl.
  //
  
  #ifndef LIBANGLE_RENDERER_VULKAN_SURFACEVK_H_
  #define LIBANGLE_RENDERER_VULKAN_SURFACEVK_H_
  
  #include <vulkan/vulkan.h>
  
  #include "libANGLE/renderer/SurfaceImpl.h"
  #include "libANGLE/renderer/vulkan/RenderTargetVk.h"
  #include "libANGLE/renderer/vulkan/vk_utils.h"
  
  namespace rx
  {
  class RendererVk;
  
  class OffscreenSurfaceVk : public SurfaceImpl
  {
    public:
      OffscreenSurfaceVk(const egl::SurfaceState &surfaceState, EGLint width, EGLint height);
      ~OffscreenSurfaceVk() override;
  
      egl::Error initialize(const egl::Display *display) override;
      FramebufferImpl *createDefaultFramebuffer(const gl::FramebufferState &state) override;
      egl::Error swap(const gl::Context *context) override;
      egl::Error postSubBuffer(const gl::Context *context,
                               EGLint x,
                               EGLint y,
                               EGLint width,
                               EGLint height) override;
      egl::Error querySurfacePointerANGLE(EGLint attribute, void **value) override;
      egl::Error bindTexImage(gl::Texture *texture, EGLint buffer) override;
      egl::Error releaseTexImage(EGLint buffer) override;
      egl::Error getSyncValues(EGLuint64KHR *ust, EGLuint64KHR *msc, EGLuint64KHR *sbc) override;
      void setSwapInterval(EGLint interval) override;
  
      // width and height can change with client window resizing
      EGLint getWidth() const override;
      EGLint getHeight() const override;
  
      EGLint isPostSubBufferSupported() const override;
      EGLint getSwapBehavior() const override;
  
      gl::Error getAttachmentRenderTarget(const gl::Context *context,
                                          GLenum binding,
                                          const gl::ImageIndex &imageIndex,
                                          FramebufferAttachmentRenderTarget **rtOut) override;
  
      gl::Error initializeContents(const gl::Context *context,
                                   const gl::ImageIndex &imageIndex) override;
  
    private:
      EGLint mWidth;
      EGLint mHeight;
  };
  
  class WindowSurfaceVk : public SurfaceImpl, public ResourceVk
  {
    public:
      WindowSurfaceVk(const egl::SurfaceState &surfaceState,
                      EGLNativeWindowType window,
                      EGLint width,
                      EGLint height);
      ~WindowSurfaceVk() override;
  
      void destroy(const egl::Display *display) override;
  
      egl::Error initialize(const egl::Display *display) override;
      FramebufferImpl *createDefaultFramebuffer(const gl::FramebufferState &state) override;
      egl::Error swap(const gl::Context *context) override;
      egl::Error postSubBuffer(const gl::Context *context,
                               EGLint x,
                               EGLint y,
                               EGLint width,
                               EGLint height) override;
      egl::Error querySurfacePointerANGLE(EGLint attribute, void **value) override;
      egl::Error bindTexImage(gl::Texture *texture, EGLint buffer) override;
      egl::Error releaseTexImage(EGLint buffer) override;
      egl::Error getSyncValues(EGLuint64KHR *ust, EGLuint64KHR *msc, EGLuint64KHR *sbc) override;
      void setSwapInterval(EGLint interval) override;
  
      // width and height can change with client window resizing
      EGLint getWidth() const override;
      EGLint getHeight() const override;
  
      EGLint isPostSubBufferSupported() const override;
      EGLint getSwapBehavior() const override;
  
      gl::Error getAttachmentRenderTarget(const gl::Context *context,
                                          GLenum binding,
                                          const gl::ImageIndex &imageIndex,
                                          FramebufferAttachmentRenderTarget **rtOut) override;
  
      gl::Error initializeContents(const gl::Context *context,
                                   const gl::ImageIndex &imageIndex) override;
  
      gl::ErrorOrResult<vk::Framebuffer *> getCurrentFramebuffer(
          VkDevice device,
          const vk::RenderPass &compatibleRenderPass);
  
    protected:
      EGLNativeWindowType mNativeWindowType;
      VkSurfaceKHR mSurface;
      VkInstance mInstance;
  
    private:
      virtual vk::ErrorOrResult<gl::Extents> createSurfaceVk(RendererVk *renderer) = 0;
      vk::Error initializeImpl(RendererVk *renderer);
      vk::Error nextSwapchainImage(RendererVk *renderer);
  
      VkSwapchainKHR mSwapchain;
  
      RenderTargetVk mColorRenderTarget;
      RenderTargetVk mDepthStencilRenderTarget;
  
      uint32_t mCurrentSwapchainImageIndex;
  
      // When acquiring a new image for rendering, we keep a 'spare' semaphore. We pass this extra
      // semaphore to VkAcquireNextImage, then hand it to the next available SwapchainImage when
      // the command completes. We then make the old semaphore in the new SwapchainImage the spare
      // semaphore, since we know the image is no longer using it. This avoids the chicken and egg
      // problem with needing to know the next available image index before we acquire it.
      vk::Semaphore mAcquireNextImageSemaphore;
  
      struct SwapchainImage
      {
          SwapchainImage();
          SwapchainImage(SwapchainImage &&other);
          ~SwapchainImage();
  
          vk::Image image;
          vk::ImageView imageView;
          vk::Framebuffer framebuffer;
          vk::Semaphore imageAcquiredSemaphore;
          vk::Semaphore commandsCompleteSemaphore;
      };
  
      std::vector<SwapchainImage> mSwapchainImages;
  
      vk::Image mDepthStencilImage;
      vk::DeviceMemory mDepthStencilDeviceMemory;
      vk::ImageView mDepthStencilImageView;
  };
  
  }  // namespace rx
  
  #endif  // LIBANGLE_RENDERER_VULKAN_SURFACEVK_H_
  

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