forked from suyu/suyu
58b0ae84b5
This reworks how host<->device synchronization works on the Vulkan backend. Instead of "protecting" resources with a fence and signalling these as free when the fence is known to be signalled by the host GPU, use timeline semaphores. Vulkan timeline semaphores allow use to work on a subset of D3D12 fences. As far as we are concerned, timeline semaphores are a value set by the host or the device that can be waited by either of them. Taking advantange of this, we can have a monolithically increasing atomic value for each submission to the graphics queue. Instead of protecting resources with a fence, we simply store the current logical tick (the atomic value stored in CPU memory). When we want to know if a resource is free, it can be compared to the current GPU tick. This greatly simplifies resource management code and the free status of resources should have less false negatives. To workaround bugs in validation layers, when these are attached there's a thread waiting for timeline semaphores.
119 lines
3.3 KiB
C++
119 lines
3.3 KiB
C++
// Copyright 2018 yuzu Emulator Project
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#pragma once
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#include <memory>
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#include "video_core/renderer_vulkan/vk_memory_manager.h"
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#include "video_core/renderer_vulkan/wrapper.h"
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namespace Core {
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class System;
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}
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namespace Core::Memory {
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class Memory;
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}
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namespace Core::Frontend {
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class EmuWindow;
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}
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namespace Tegra {
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struct FramebufferConfig;
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}
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namespace VideoCore {
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class RasterizerInterface;
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}
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namespace Vulkan {
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struct ScreenInfo;
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class RasterizerVulkan;
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class VKDevice;
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class VKImage;
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class VKScheduler;
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class VKSwapchain;
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class VKBlitScreen final {
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public:
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explicit VKBlitScreen(Core::Memory::Memory& cpu_memory,
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Core::Frontend::EmuWindow& render_window,
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VideoCore::RasterizerInterface& rasterizer, const VKDevice& device,
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VKMemoryManager& memory_manager, VKSwapchain& swapchain,
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VKScheduler& scheduler, const VKScreenInfo& screen_info);
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~VKBlitScreen();
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void Recreate();
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[[nodiscard]] VkSemaphore Draw(const Tegra::FramebufferConfig& framebuffer,
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bool use_accelerated);
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private:
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struct BufferData;
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void CreateStaticResources();
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void CreateShaders();
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void CreateSemaphores();
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void CreateDescriptorPool();
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void CreateRenderPass();
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void CreateDescriptorSetLayout();
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void CreateDescriptorSets();
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void CreatePipelineLayout();
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void CreateGraphicsPipeline();
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void CreateSampler();
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void CreateDynamicResources();
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void CreateFramebuffers();
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void RefreshResources(const Tegra::FramebufferConfig& framebuffer);
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void ReleaseRawImages();
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void CreateStagingBuffer(const Tegra::FramebufferConfig& framebuffer);
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void CreateRawImages(const Tegra::FramebufferConfig& framebuffer);
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void UpdateDescriptorSet(std::size_t image_index, VkImageView image_view) const;
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void SetUniformData(BufferData& data, const Tegra::FramebufferConfig& framebuffer) const;
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void SetVertexData(BufferData& data, const Tegra::FramebufferConfig& framebuffer) const;
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u64 CalculateBufferSize(const Tegra::FramebufferConfig& framebuffer) const;
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u64 GetRawImageOffset(const Tegra::FramebufferConfig& framebuffer,
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std::size_t image_index) const;
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Core::Memory::Memory& cpu_memory;
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Core::Frontend::EmuWindow& render_window;
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VideoCore::RasterizerInterface& rasterizer;
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const VKDevice& device;
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VKMemoryManager& memory_manager;
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VKSwapchain& swapchain;
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VKScheduler& scheduler;
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const std::size_t image_count;
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const VKScreenInfo& screen_info;
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vk::ShaderModule vertex_shader;
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vk::ShaderModule fragment_shader;
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vk::DescriptorPool descriptor_pool;
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vk::DescriptorSetLayout descriptor_set_layout;
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vk::PipelineLayout pipeline_layout;
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vk::Pipeline pipeline;
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vk::RenderPass renderpass;
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std::vector<vk::Framebuffer> framebuffers;
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vk::DescriptorSets descriptor_sets;
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vk::Sampler sampler;
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vk::Buffer buffer;
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VKMemoryCommit buffer_commit;
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std::vector<u64> resource_ticks;
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std::vector<vk::Semaphore> semaphores;
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std::vector<std::unique_ptr<VKImage>> raw_images;
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std::vector<VKMemoryCommit> raw_buffer_commits;
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u32 raw_width = 0;
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u32 raw_height = 0;
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};
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} // namespace Vulkan
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