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https://github.com/yuzu-emu/yuzu-mainline.git
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214 lines
6.6 KiB
C++
214 lines
6.6 KiB
C++
// Copyright 2014 Citra Emulator Project
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// Licensed under GPLv2
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// Refer to the license.txt file included.
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#pragma once
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#include <array>
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#include <condition_variable>
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#include <list>
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#include <map>
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#include <memory>
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#include <mutex>
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#include <vector>
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#include "video_core/math.h"
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#include "video_core/pica.h"
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namespace Pica {
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class DebugContext {
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public:
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enum class Event {
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FirstEvent = 0,
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CommandLoaded = FirstEvent,
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CommandProcessed,
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IncomingPrimitiveBatch,
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FinishedPrimitiveBatch,
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NumEvents
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};
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/**
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* Inherit from this class to be notified of events registered to some debug context.
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* Most importantly this is used for our debugger GUI.
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*
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* To implement event handling, override the OnPicaBreakPointHit and OnPicaResume methods.
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* @warning All BreakPointObservers need to be on the same thread to guarantee thread-safe state access
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* @todo Evaluate an alternative interface, in which there is only one managing observer and multiple child observers running (by design) on the same thread.
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*/
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class BreakPointObserver {
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public:
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/// Constructs the object such that it observes events of the given DebugContext.
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BreakPointObserver(std::shared_ptr<DebugContext> debug_context) : context_weak(debug_context) {
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std::unique_lock<std::mutex> lock(debug_context->breakpoint_mutex);
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debug_context->breakpoint_observers.push_back(this);
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}
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virtual ~BreakPointObserver() {
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auto context = context_weak.lock();
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if (context) {
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std::unique_lock<std::mutex> lock(context->breakpoint_mutex);
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context->breakpoint_observers.remove(this);
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// If we are the last observer to be destroyed, tell the debugger context that
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// it is free to continue. In particular, this is required for a proper Citra
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// shutdown, when the emulation thread is waiting at a breakpoint.
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if (context->breakpoint_observers.empty())
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context->Resume();
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}
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}
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/**
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* Action to perform when a breakpoint was reached.
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* @param event Type of event which triggered the breakpoint
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* @param data Optional data pointer (if unused, this is a nullptr)
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* @note This function will perform nothing unless it is overridden in the child class.
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*/
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virtual void OnPicaBreakPointHit(Event, void*) {
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}
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/**
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* Action to perform when emulation is resumed from a breakpoint.
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* @note This function will perform nothing unless it is overridden in the child class.
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*/
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virtual void OnPicaResume() {
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}
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protected:
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/**
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* Weak context pointer. This need not be valid, so when requesting a shared_ptr via
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* context_weak.lock(), always compare the result against nullptr.
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*/
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std::weak_ptr<DebugContext> context_weak;
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};
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/**
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* Simple structure defining a breakpoint state
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*/
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struct BreakPoint {
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bool enabled = false;
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};
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/**
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* Static constructor used to create a shared_ptr of a DebugContext.
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*/
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static std::shared_ptr<DebugContext> Construct() {
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return std::shared_ptr<DebugContext>(new DebugContext);
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}
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/**
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* Used by the emulation core when a given event has happened. If a breakpoint has been set
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* for this event, OnEvent calls the event handlers of the registered breakpoint observers.
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* The current thread then is halted until Resume() is called from another thread (or until
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* emulation is stopped).
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* @param event Event which has happened
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* @param data Optional data pointer (pass nullptr if unused). Needs to remain valid until Resume() is called.
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*/
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void OnEvent(Event event, void* data);
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/**
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* Resume from the current breakpoint.
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* @warning Calling this from the same thread that OnEvent was called in will cause a deadlock. Calling from any other thread is safe.
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*/
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void Resume();
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/**
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* Delete all set breakpoints and resume emulation.
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*/
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void ClearBreakpoints() {
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breakpoints.clear();
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Resume();
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}
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// TODO: Evaluate if access to these members should be hidden behind a public interface.
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std::map<Event, BreakPoint> breakpoints;
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Event active_breakpoint;
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bool at_breakpoint = false;
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private:
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/**
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* Private default constructor to make sure people always construct this through Construct()
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* instead.
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*/
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DebugContext() = default;
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/// Mutex protecting current breakpoint state and the observer list.
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std::mutex breakpoint_mutex;
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/// Used by OnEvent to wait for resumption.
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std::condition_variable resume_from_breakpoint;
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/// List of registered observers
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std::list<BreakPointObserver*> breakpoint_observers;
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};
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extern std::shared_ptr<DebugContext> g_debug_context; // TODO: Get rid of this global
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namespace DebugUtils {
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// Simple utility class for dumping geometry data to an OBJ file
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class GeometryDumper {
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public:
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struct Vertex {
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std::array<float,3> pos;
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};
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void AddTriangle(Vertex& v0, Vertex& v1, Vertex& v2);
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void Dump();
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private:
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struct Face {
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int index[3];
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};
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std::vector<Vertex> vertices;
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std::vector<Face> faces;
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};
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void DumpShader(const u32* binary_data, u32 binary_size, const u32* swizzle_data, u32 swizzle_size,
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u32 main_offset, const Regs::VSOutputAttributes* output_attributes);
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// Utility class to log Pica commands.
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struct PicaTrace {
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struct Write : public std::pair<u32,u32> {
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Write(u32 id, u32 value) : std::pair<u32,u32>(id, value) {}
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u32& Id() { return first; }
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const u32& Id() const { return first; }
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u32& Value() { return second; }
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const u32& Value() const { return second; }
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};
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std::vector<Write> writes;
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};
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void StartPicaTracing();
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bool IsPicaTracing();
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void OnPicaRegWrite(u32 id, u32 value);
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std::unique_ptr<PicaTrace> FinishPicaTracing();
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struct TextureInfo {
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PAddr physical_address;
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int width;
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int height;
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int stride;
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Pica::Regs::TextureFormat format;
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static TextureInfo FromPicaRegister(const Pica::Regs::TextureConfig& config,
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const Pica::Regs::TextureFormat& format);
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};
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const Math::Vec4<u8> LookupTexture(const u8* source, int x, int y, const TextureInfo& info,
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bool disable_alpha = false);
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void DumpTexture(const Pica::Regs::TextureConfig& texture_config, u8* data);
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void DumpTevStageConfig(const std::array<Pica::Regs::TevStageConfig,6>& stages);
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} // namespace
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} // namespace
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