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// Copyright 2023 Dolphin Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#pragma once
#include <string_view>
#include <vector>
#include "Common/CommonTypes.h"
#include "Common/HookableEvent.h"
namespace Core
{
class System;
}
// Called when certain video config setting are changed
using ConfigChangedEvent = Common::HookableEvent<"ConfigChanged", u32>;
// An event called just before the first draw call of a frame
using BeforeFrameEvent = Common::HookableEvent<"BeforeFrame">;
// An event called after the frame XFB copy begins processing on the host GPU.
// Useful for "once per frame" usecases.
// Note: In a few rare cases, games do multiple XFB copies per frame and join them while presenting.
// If this matters to your usecase, you should use BeforePresent instead.
using AfterFrameEvent = Common::HookableEvent<"AfterFrame", Core::System&>;
struct PresentInfo
{
enum class PresentReason
{
Immediate, // FIFO is Presenting the XFB immediately, straight after the XFB copy
VideoInterface, // VideoInterface has triggered a present with a new frame
VideoInterfaceDuplicate, // VideoInterface has triggered a present with a duplicate frame
};
// The number of (unique) frames since the emulated console booted
u64 frame_count = 0;
// The number of presents since the video backend was initialized.
// never goes backwards.
u64 present_count = 0;
// The frame is identical to the previous frame
PresentReason reason = PresentReason::Immediate;
// The exact emulated time of the when real hardware would have presented this frame
// FIXME: Immediate should predict the timestamp of this present
u64 emulated_timestamp = 0;
// TODO:
// u64 intended_present_time = 0;
// AfterPresent only: The actual time the frame was presented
u64 actual_present_time = 0;
enum class PresentTimeAccuracy
{
// The Driver/OS has given us an exact timestamp of when the first line of the frame started
// scanning out to the monitor
PresentOnScreenExact,
// An approximate timestamp of scanout.
PresentOnScreen,
// Dolphin doesn't have visibility of the present time. But the present operation has
// been queued with the GPU driver and will happen in the near future.
PresentInProgress,
// Not implemented
Unimplemented,
};
// Accuracy of actual_present_time
PresentTimeAccuracy present_time_accuracy = PresentTimeAccuracy::Unimplemented;
std::vector<std::string_view> xfb_copy_hashes;
};
// An event called just as a frame is queued for presentation.
// The exact timing of this event depends on the "Immediately Present XFB" option.
//
// If enabled, this event will trigger immediately after AfterFrame
// If disabled, this event won't trigger until the emulated interface starts drawing out a new
// frame.
//
// frame_count: The number of frames
using BeforePresentEvent = Common::HookableEvent<"BeforePresent", PresentInfo&>;
// An event that is triggered after a frame is presented.
// The exact timing of this event depends on backend/driver support.
using AfterPresentEvent = Common::HookableEvent<"AfterPresent", PresentInfo&>;
// An end of frame event that runs on the CPU thread
using VIEndFieldEvent = Common::HookableEvent<"VIEndField">;
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