Devtools: PM4 Explorer (#1094)

* Devtools: Pause system

* Devtools: pm4 viewer

- new menu bar
- refactored video_info layer
- dump & inspect pm4 packets
- removed dumpPM4 config
- renamed System to DebugState
- add docking space
- simple video info constrained to window size

* Devtools: pm4 viewer - add combo to select the queue

* Devtools: pm4 viewer - add hex editor

* Devtools: pm4 viewer - dump current cmd

* add monospaced font to devtools

* Devtools: pm4 viewer - use spec op name

avoid some allocations

src/core/debug_state.h

@@ -0,0 +1,126 @@
+// SPDX-FileCopyrightText: Copyright 2024 shadPS4 Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include <atomic>
+#include <mutex>
+#include <vector>
+#include <queue>
+
+#include "common/types.h"
+
+#ifdef _WIN32
+#ifndef WIN32_LEAN_AND_MEAN
+#define WIN32_LEAN_AND_MEAN 1
+#endif
+#include <Windows.h>
+using ThreadID = DWORD;
+#else
+#include <pthread.h>
+#include <signal.h>
+using ThreadID = pthread_t;
+#endif
+
+namespace Core::Devtools {
+class Layer;
+namespace Widget {
+class FrameGraph;
+}
+} // namespace Core::Devtools
+
+namespace DebugStateType {
+
+enum class QueueType {
+    acb,
+    dcb,
+    ccb,
+};
+
+struct QueueDump {
+    QueueType type;
+    u32 submit_num;
+    u32 num2; // acb: queue_num; else: buffer_in_submit
+    std::vector<u32> data;
+};
+
+struct FrameDump {
+    std::vector<QueueDump> queues;
+};
+
+class DebugStateImpl {
+    friend class Core::Devtools::Layer;
+    friend class Core::Devtools::Widget::FrameGraph;
+
+    std::mutex guest_threads_mutex{};
+    std::vector<ThreadID> guest_threads{};
+    std::atomic_bool is_guest_threads_paused = false;
+    u64 pause_time{};
+
+    std::atomic_int32_t flip_frame_count = 0;
+    std::atomic_int32_t gnm_frame_count = 0;
+
+    s32 gnm_frame_dump_request_count = -1;
+    bool waiting_submit_pause = false;
+    bool should_show_frame_dump = false;
+
+    std::mutex frame_dump_list_mutex;
+    std::vector<FrameDump> frame_dump_list{};
+
+    std::queue<std::string> debug_message_popup;
+
+public:
+    void AddCurrentThreadToGuestList();
+
+    void RemoveCurrentThreadFromGuestList();
+
+    void PauseGuestThreads();
+
+    void ResumeGuestThreads();
+
+    bool IsGuestThreadsPaused() const {
+        return is_guest_threads_paused;
+    }
+
+    void IncFlipFrameNum() {
+        ++flip_frame_count;
+    }
+
+    void IncGnmFrameNum() {
+        ++gnm_frame_count;
+        --gnm_frame_dump_request_count;
+    }
+
+    u32 GetFrameNum() const {
+        return flip_frame_count;
+    }
+
+    bool DumpingCurrentFrame() const {
+        return gnm_frame_dump_request_count > 0;
+    }
+
+    bool ShouldPauseInSubmit() const {
+        return waiting_submit_pause && gnm_frame_dump_request_count == 0;
+    }
+
+    void RequestFrameDump(s32 count = 1);
+
+    FrameDump& GetFrameDump() {
+        return frame_dump_list[frame_dump_list.size() - gnm_frame_dump_request_count];
+    }
+
+    void PushQueueDump(QueueDump dump) {
+        std::unique_lock lock{frame_dump_list_mutex};
+        GetFrameDump().queues.push_back(std::move(dump));
+    }
+
+    void ShowDebugMessage(std::string message) {
+        if (message.empty()) {
+            return;
+        }
+        debug_message_popup.push(std::move(message));
+    }
+};
+} // namespace DebugStateType
+
+extern DebugStateType::DebugStateImpl& DebugState;