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https://github.com/dolphin-emu/dolphin.git
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797d0b7b1b
This adds about a frame of latency, and since most games don't change VI registers during scanout, we can get away with outputting the XFB at the start of scanout. WWE Crush Hour is the (only currently known) exception, which has flickering problems when doing it this way. This adds a path to perform the output at the end of scanout, and gates it behind an option which defaults to using the latency-reducing pre-scanout path.
80 lines
2 KiB
C++
80 lines
2 KiB
C++
// Copyright 2011 Dolphin Emulator Project
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// SPDX-License-Identifier: GPL-2.0-or-later
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#pragma once
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#include <memory>
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#include <optional>
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#include <string>
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#include <vector>
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#include "Common/CommonTypes.h"
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#include "Common/WindowSystemInfo.h"
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#include "VideoCommon/PerfQueryBase.h"
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namespace MMIO
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{
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class Mapping;
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}
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class PointerWrap;
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enum class FieldType
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{
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Odd,
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Even,
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};
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enum class EFBAccessType
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{
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PeekZ,
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PokeZ,
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PeekColor,
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PokeColor
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};
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class VideoBackendBase
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{
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public:
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virtual ~VideoBackendBase() {}
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virtual bool Initialize(const WindowSystemInfo& wsi) = 0;
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virtual void Shutdown() = 0;
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virtual std::string GetName() const = 0;
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virtual std::string GetDisplayName() const { return GetName(); }
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virtual void InitBackendInfo() = 0;
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virtual std::optional<std::string> GetWarningMessage() const { return {}; }
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// Prepares a native window for rendering. This is called on the main thread, or the
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// thread which owns the window.
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virtual void PrepareWindow(WindowSystemInfo& wsi) {}
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static std::string BadShaderFilename(const char* shader_stage, int counter);
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void Video_ExitLoop();
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void Video_OutputXFB(u32 xfb_addr, u32 fb_width, u32 fb_stride, u32 fb_height, u64 ticks);
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u32 Video_AccessEFB(EFBAccessType type, u32 x, u32 y, u32 data);
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u32 Video_GetQueryResult(PerfQueryType type);
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u16 Video_GetBoundingBox(int index);
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static std::string GetDefaultBackendName();
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static const std::vector<std::unique_ptr<VideoBackendBase>>& GetAvailableBackends();
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static void ActivateBackend(const std::string& name);
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// Fills the backend_info fields with the capabilities of the selected backend/device.
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static void PopulateBackendInfo();
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// Called by the UI thread when the graphics config is opened.
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static void PopulateBackendInfoFromUI();
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// Wrapper function which pushes the event to the GPU thread.
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void DoState(PointerWrap& p);
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protected:
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void InitializeShared();
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void ShutdownShared();
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bool m_initialized = false;
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};
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extern VideoBackendBase* g_video_backend;
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