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/*
* Copyright (C) 2016 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef VULKANMANAGER_H
#define VULKANMANAGER_H
#include <SkSurface.h>
#include <vk/GrVkBackendContext.h>
#include <vulkan/vulkan.h>
namespace android {
namespace uirenderer {
namespace renderthread {
class RenderThread;
class VulkanSurface {
public:
VulkanSurface() {}
sk_sp<SkSurface> getBackBufferSurface() { return mBackbuffer; }
private:
friend class VulkanManager;
struct BackbufferInfo {
uint32_t mImageIndex; // image this is associated with
VkSemaphore mAcquireSemaphore; // we signal on this for acquisition of image
VkSemaphore mRenderSemaphore; // we wait on this for rendering to be done
VkCommandBuffer
mTransitionCmdBuffers[2]; // to transition layout between present and render
// We use these fences to make sure the above Command buffers have finished their work
// before attempting to reuse them or destroy them.
VkFence mUsageFences[2];
};
struct ImageInfo {
VkImageLayout mImageLayout = VK_IMAGE_LAYOUT_UNDEFINED;
sk_sp<SkSurface> mSurface;
uint16_t mLastUsed = 0;
bool mInvalid = true;
};
sk_sp<SkSurface> mBackbuffer;
VkSurfaceKHR mVkSurface = VK_NULL_HANDLE;
VkSwapchainKHR mSwapchain = VK_NULL_HANDLE;
BackbufferInfo* mBackbuffers = nullptr;
uint32_t mCurrentBackbufferIndex;
uint32_t mImageCount;
VkImage* mImages = nullptr;
ImageInfo* mImageInfos;
uint16_t mCurrentTime = 0;
};
// This class contains the shared global Vulkan objects, such as VkInstance, VkDevice and VkQueue,
// which are re-used by CanvasContext. This class is created once and should be used by all vulkan
// windowing contexts. The VulkanManager must be initialized before use.
class VulkanManager {
public:
// Sets up the vulkan context that is shared amonst all clients of the VulkanManager. This must
// be call once before use of the VulkanManager. Multiple calls after the first will simiply
// return.
void initialize();
// Quick check to see if the VulkanManager has been initialized.
bool hasVkContext() { return mBackendContext.get() != nullptr; }
// Given a window this creates a new VkSurfaceKHR and VkSwapchain and stores them inside a new
// VulkanSurface object which is returned.
VulkanSurface* createSurface(ANativeWindow* window);
// Destroy the VulkanSurface and all associated vulkan objects.
void destroySurface(VulkanSurface* surface);
// Cleans up all the global state in the VulkanManger.
void destroy();
// No work is needed to make a VulkanSurface current, and all functions require that a
// VulkanSurface is passed into them so we just return true here.
bool isCurrent(VulkanSurface* surface) { return true; }
int getAge(VulkanSurface* surface);
// Returns an SkSurface which wraps the next image returned from vkAcquireNextImageKHR. It also
// will transition the VkImage from a present layout to color attachment so that it can be used
// by the client for drawing.
SkSurface* getBackbufferSurface(VulkanSurface* surface);
// Presents the current VkImage.
void swapBuffers(VulkanSurface* surface);
private:
friend class RenderThread;
explicit VulkanManager(RenderThread& thread);
~VulkanManager() { destroy(); }
void destroyBuffers(VulkanSurface* surface);
bool createSwapchain(VulkanSurface* surface);
void createBuffers(VulkanSurface* surface, VkFormat format, VkExtent2D extent);
VulkanSurface::BackbufferInfo* getAvailableBackbuffer(VulkanSurface* surface);
// 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;
}
// NOLINTNEXTLINE(google-explicit-constructor)
operator FNPTR_TYPE() const { return fPtr; }
private:
FNPTR_TYPE fPtr;
};
// WSI interface functions
VkPtr<PFN_vkCreateAndroidSurfaceKHR> mCreateAndroidSurfaceKHR;
VkPtr<PFN_vkDestroySurfaceKHR> mDestroySurfaceKHR;
VkPtr<PFN_vkGetPhysicalDeviceSurfaceSupportKHR> mGetPhysicalDeviceSurfaceSupportKHR;
VkPtr<PFN_vkGetPhysicalDeviceSurfaceCapabilitiesKHR> mGetPhysicalDeviceSurfaceCapabilitiesKHR;
VkPtr<PFN_vkGetPhysicalDeviceSurfaceFormatsKHR> mGetPhysicalDeviceSurfaceFormatsKHR;
VkPtr<PFN_vkGetPhysicalDeviceSurfacePresentModesKHR> mGetPhysicalDeviceSurfacePresentModesKHR;
VkPtr<PFN_vkCreateSwapchainKHR> mCreateSwapchainKHR;
VkPtr<PFN_vkDestroySwapchainKHR> mDestroySwapchainKHR;
VkPtr<PFN_vkGetSwapchainImagesKHR> mGetSwapchainImagesKHR;
VkPtr<PFN_vkAcquireNextImageKHR> mAcquireNextImageKHR;
VkPtr<PFN_vkQueuePresentKHR> mQueuePresentKHR;
VkPtr<PFN_vkCreateSharedSwapchainsKHR> mCreateSharedSwapchainsKHR;
// Additional vulkan functions
VkPtr<PFN_vkCreateCommandPool> mCreateCommandPool;
VkPtr<PFN_vkDestroyCommandPool> mDestroyCommandPool;
VkPtr<PFN_vkAllocateCommandBuffers> mAllocateCommandBuffers;
VkPtr<PFN_vkFreeCommandBuffers> mFreeCommandBuffers;
VkPtr<PFN_vkResetCommandBuffer> mResetCommandBuffer;
VkPtr<PFN_vkBeginCommandBuffer> mBeginCommandBuffer;
VkPtr<PFN_vkEndCommandBuffer> mEndCommandBuffer;
VkPtr<PFN_vkCmdPipelineBarrier> mCmdPipelineBarrier;
VkPtr<PFN_vkGetDeviceQueue> mGetDeviceQueue;
VkPtr<PFN_vkQueueSubmit> mQueueSubmit;
VkPtr<PFN_vkQueueWaitIdle> mQueueWaitIdle;
VkPtr<PFN_vkDeviceWaitIdle> mDeviceWaitIdle;
VkPtr<PFN_vkCreateSemaphore> mCreateSemaphore;
VkPtr<PFN_vkDestroySemaphore> mDestroySemaphore;
VkPtr<PFN_vkCreateFence> mCreateFence;
VkPtr<PFN_vkDestroyFence> mDestroyFence;
VkPtr<PFN_vkWaitForFences> mWaitForFences;
VkPtr<PFN_vkResetFences> mResetFences;
RenderThread& mRenderThread;
sk_sp<const GrVkBackendContext> mBackendContext;
uint32_t mPresentQueueIndex;
VkQueue mPresentQueue = VK_NULL_HANDLE;
VkCommandPool mCommandPool = VK_NULL_HANDLE;
enum class SwapBehavior {
Discard,
BufferAge,
};
SwapBehavior mSwapBehavior = SwapBehavior::Discard;
};
} /* namespace renderthread */
} /* namespace uirenderer */
} /* namespace android */
#endif /* VULKANMANAGER_H */