Pica/citra-qt: Replace command list view and command list debugging code with something more sophisticated.

src/video_core/command_processor.cpp

@@ -33,6 +33,8 @@ static inline void WritePicaReg(u32 id, u32 value, u32 mask) {
     u32 old_value = registers[id];
     registers[id] = (old_value & ~mask) | (value & mask);
 
+    DebugUtils::OnPicaRegWrite(id, registers[id]);
+
     switch(id) {
         // It seems like these trigger vertex rendering
         case PICA_REG_INDEX(trigger_draw):

src/video_core/debug_utils/debug_utils.cpp

@@ -4,6 +4,7 @@
 
 #include <algorithm>
 #include <fstream>
+#include <mutex>
 #include <string>
 
 #include "video_core/pica.h"
@@ -260,6 +261,60 @@ void DumpShader(const u32* binary_data, u32 binary_size, const u32* swizzle_data
     }
 }
 
+static std::unique_ptr<PicaTrace> pica_trace;
+static std::mutex pica_trace_mutex;
+static int is_pica_tracing = false;
+
+void StartPicaTracing()
+{
+    if (is_pica_tracing) {
+        ERROR_LOG(GPU, "StartPicaTracing called even though tracing already running!");
+        return;
+    }
+
+    pica_trace_mutex.lock();
+    pica_trace = std::unique_ptr<PicaTrace>(new PicaTrace);
+
+    is_pica_tracing = true;
+    pica_trace_mutex.unlock();
+}
+
+bool IsPicaTracing()
+{
+    return is_pica_tracing;
+}
+
+void OnPicaRegWrite(u32 id, u32 value)
+{
+    // Double check for is_pica_tracing to avoid pointless locking overhead
+    if (!is_pica_tracing)
+        return;
+
+    std::unique_lock<std::mutex> lock(pica_trace_mutex);
+
+    if (!is_pica_tracing)
+        return;
+
+    pica_trace->writes.push_back({id, value});
+}
+
+std::unique_ptr<PicaTrace> FinishPicaTracing()
+{
+    if (!is_pica_tracing) {
+        ERROR_LOG(GPU, "FinishPicaTracing called even though tracing already running!");
+        return {};
+    }
+
+    // signalize that no further tracing should be performed
+    is_pica_tracing = false;
+
+    // Wait until running tracing is finished
+    pica_trace_mutex.lock();
+    std::unique_ptr<PicaTrace> ret(std::move(pica_trace));
+    pica_trace_mutex.unlock();
+    return std::move(ret);
+}
+
 } // namespace
 
 } // namespace

src/video_core/debug_utils/debug_utils.h

@@ -5,6 +5,7 @@
 #pragma once
 
 #include <array>
+#include <memory>
 #include <vector>
 
 #include "video_core/pica.h"
@@ -38,6 +39,26 @@ private:
 void DumpShader(const u32* binary_data, u32 binary_size, const u32* swizzle_data, u32 swizzle_size,
                 u32 main_offset, const Regs::VSOutputAttributes* output_attributes);
 
+
+// Utility class to log Pica commands.
+struct PicaTrace {
+    struct Write : public std::pair<u32,u32> {
+		Write(u32 id, u32 value) : std::pair<u32,u32>(id, value) {}
+
+        u32& Id() { return first; }
+        const u32& Id() const { return first; }
+
+        u32& Value() { return second; }
+        const u32& Value() const { return second; }
+    };
+    std::vector<Write> writes;
+};
+
+void StartPicaTracing();
+bool IsPicaTracing();
+void OnPicaRegWrite(u32 id, u32 value);
+std::unique_ptr<PicaTrace> FinishPicaTracing();
+
 } // namespace
 
 } // namespace

src/video_core/gpu_debugger.h

@@ -18,19 +18,6 @@
 class GraphicsDebugger
 {
 public:
-    // A few utility structs used to expose data
-    // A vector of commands represented by their raw byte sequence
-    struct PicaCommand : public std::vector<u32>
-    {
-        const Pica::CommandProcessor::CommandHeader& GetHeader() const
-        {
-            const u32& val = at(1);
-            return *(Pica::CommandProcessor::CommandHeader*)&val;
-        }
-    };
-
-    typedef std::vector<PicaCommand> PicaCommandList;
-
     // Base class for all objects which need to be notified about GPU events
     class DebuggerObserver
     {
@@ -55,16 +42,6 @@ public:
             ERROR_LOG(GSP, "Received command: id=%x", (int)cmd.id.Value());
         }
 
-        /**
-        * @param lst command list which triggered this call
-        * @param is_new true if the command list was called for the first time
-        * @todo figure out how to make sure called functions don't keep references around beyond their life time
-        */
-        virtual void OnCommandListCalled(const PicaCommandList& lst, bool is_new)
-        {
-            ERROR_LOG(GSP, "Command list called: %d", (int)is_new);
-        }
-
     protected:
         const GraphicsDebugger* GetDebugger() const
         {
@@ -93,49 +70,12 @@ public:
                         } );
     }
 
-    void CommandListCalled(u32 address, u32* command_list, u32 size_in_words)
-    {
-        if (observers.empty())
-            return;
-
-        PicaCommandList cmdlist;
-        for (u32* parse_pointer = command_list; parse_pointer < command_list + size_in_words;)
-        {
-            const Pica::CommandProcessor::CommandHeader& header = *(Pica::CommandProcessor::CommandHeader*)(&parse_pointer[1]);
-
-            cmdlist.push_back(PicaCommand());
-            auto& cmd = cmdlist.back();
-
-            size_t size = 2 + header.extra_data_length;
-            size = (size + 1) / 2 * 2; // align to 8 bytes
-            cmd.reserve(size);
-            std::copy(parse_pointer, parse_pointer + size, std::back_inserter(cmd));
-
-            parse_pointer += size;
-        }
-
-        auto obj = std::pair<u32,PicaCommandList>(address, cmdlist);
-        auto it = std::find(command_lists.begin(), command_lists.end(), obj);
-        bool is_new = (it == command_lists.end());
-        if (is_new)
-            command_lists.push_back(obj);
-
-        ForEachObserver([&](DebuggerObserver* observer) {
-                            observer->OnCommandListCalled(obj.second, is_new);
-                        } );
-    }
-
     const GSP_GPU::Command& ReadGXCommandHistory(int index) const
     {
         // TODO: Is this thread-safe?
         return gx_command_history[index];
     }
 
-    const std::vector<std::pair<u32,PicaCommandList>>& GetCommandLists() const
-    {
-        return command_lists;
-    }
-
     void RegisterObserver(DebuggerObserver* observer)
     {
         // TODO: Check for duplicates
@@ -158,7 +98,4 @@ private:
     std::vector<DebuggerObserver*> observers;
 
     std::vector<GSP_GPU::Command> gx_command_history;
-
-    // vector of pairs of command lists and their storage address
-    std::vector<std::pair<u32,PicaCommandList>> command_lists;
 };