skia2/tools/viewer/sk_app/VulkanWindowContext.h

111 lines
3.9 KiB
C++

/*
* Copyright 2016 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef VulkanWindowContext_DEFINED
#define VulkanWindowContext_DEFINED
#include "SkTypes.h" // required to pull in any SkUserConfig defines
#ifdef SK_VULKAN
#include "vk/GrVkBackendContext.h"
#include "WindowContext.h"
class GrRenderTarget;
namespace sk_app {
class VulkanWindowContext : public WindowContext {
public:
~VulkanWindowContext() override;
sk_sp<SkSurface> getBackbufferSurface() override;
void swapBuffers() override;
bool isValid() override { return SkToBool(fBackendContext.get()); }
void resize(int w, int h) override {
this->createSwapchain(w, h, fDisplayParams);
}
void setDisplayParams(const DisplayParams& params) override {
this->createSwapchain(fWidth, fHeight, params);
}
GrBackendContext getBackendContext() override {
return (GrBackendContext) fBackendContext.get();
}
/** Platform specific function that creates a VkSurfaceKHR for a window */
using CreateVkSurfaceFn = std::function<VkSurfaceKHR(VkInstance)>;
/** Platform specific function that determines whether presentation will succeed. */
using CanPresentFn = GrVkBackendContext::CanPresentFn;
VulkanWindowContext(const DisplayParams&, CreateVkSurfaceFn, CanPresentFn);
private:
void destroyContext();
struct BackbufferInfo {
uint32_t fImageIndex; // image this is associated with
VkSemaphore fAcquireSemaphore; // we signal on this for acquisition of image
VkSemaphore fRenderSemaphore; // we wait on this for rendering to be done
VkCommandBuffer fTransitionCmdBuffers[2]; // to transition layout between present and render
VkFence fUsageFences[2]; // used to ensure this data is no longer used on GPU
};
BackbufferInfo* getAvailableBackbuffer();
bool createSwapchain(int width, int height, const DisplayParams& params);
void createBuffers(VkFormat format);
void destroyBuffers();
SkAutoTUnref<const GrVkBackendContext> fBackendContext;
// simple wrapper class that exists only to initialize a pointer to NULL
template <typename FNPTR_TYPE> class VkPtr {
public:
VkPtr() : fPtr(NULL) {}
VkPtr operator=(FNPTR_TYPE ptr) { fPtr = ptr; return *this; }
operator FNPTR_TYPE() const { return fPtr; }
private:
FNPTR_TYPE fPtr;
};
// WSI interface functions
VkPtr<PFN_vkDestroySurfaceKHR> fDestroySurfaceKHR;
VkPtr<PFN_vkGetPhysicalDeviceSurfaceSupportKHR> fGetPhysicalDeviceSurfaceSupportKHR;
VkPtr<PFN_vkGetPhysicalDeviceSurfaceCapabilitiesKHR> fGetPhysicalDeviceSurfaceCapabilitiesKHR;
VkPtr<PFN_vkGetPhysicalDeviceSurfaceFormatsKHR> fGetPhysicalDeviceSurfaceFormatsKHR;
VkPtr<PFN_vkGetPhysicalDeviceSurfacePresentModesKHR> fGetPhysicalDeviceSurfacePresentModesKHR;
VkPtr<PFN_vkCreateSwapchainKHR> fCreateSwapchainKHR;
VkPtr<PFN_vkDestroySwapchainKHR> fDestroySwapchainKHR;
VkPtr<PFN_vkGetSwapchainImagesKHR> fGetSwapchainImagesKHR;
VkPtr<PFN_vkAcquireNextImageKHR> fAcquireNextImageKHR;
VkPtr<PFN_vkQueuePresentKHR> fQueuePresentKHR;
VkPtr<PFN_vkCreateSharedSwapchainsKHR> fCreateSharedSwapchainsKHR;
VkSurfaceKHR fSurface;
VkSwapchainKHR fSwapchain;
uint32_t fPresentQueueIndex;
VkQueue fPresentQueue;
uint32_t fImageCount;
VkImage* fImages; // images in the swapchain
VkImageLayout* fImageLayouts; // layouts of these images when not color attachment
sk_sp<SkSurface>* fSurfaces; // surfaces client renders to (may not be based on rts)
VkCommandPool fCommandPool;
BackbufferInfo* fBackbuffers;
uint32_t fCurrentBackbufferIndex;
};
} // namespace sk_app
#endif // SK_VULKAN
#endif