Sharing more of trace viewer code.

src/xenia/emulator.cc

@@ -50,8 +50,12 @@ Emulator::~Emulator() {
   }
 
   // Give the systems time to shutdown before we delete them.
-  graphics_system_->Shutdown();
-  audio_system_->Shutdown();
+  if (graphics_system_) {
+    graphics_system_->Shutdown();
+  }
+  if (audio_system_) {
+    audio_system_->Shutdown();
+  }
 
   input_system_.reset();
   graphics_system_.reset();

src/xenia/gpu/gl4/gl4_trace_viewer_main.cc

@@ -7,21 +7,11 @@
  ******************************************************************************
  */
 
-#include <gflags/gflags.h>
-
-#include <cstring>
-
 #include "xenia/base/logging.h"
 #include "xenia/base/main.h"
-#include "xenia/gpu/trace_viewer.h"
-
-// HACK: until we have another impl, we just use gl4 directly.
 #include "xenia/gpu/gl4/gl4_command_processor.h"
 #include "xenia/gpu/gl4/gl4_graphics_system.h"
-#include "xenia/gpu/gl4/gl4_shader.h"
-#include "xenia/ui/file_picker.h"
-
-DEFINE_string(target_trace_file, "", "Specifies the trace file to load.");
+#include "xenia/gpu/trace_viewer.h"
 
 namespace xe {
 namespace gpu {
@@ -69,55 +59,8 @@ class GL4TraceViewer : public TraceViewer {
 };
 
 int trace_viewer_main(const std::vector<std::wstring>& args) {
-  // Grab path from the flag or unnamed argument.
-  std::wstring path;
-  if (!FLAGS_target_trace_file.empty()) {
-    // Passed as a named argument.
-    // TODO(benvanik): find something better than gflags that supports
-    // unicode.
-    path = xe::to_wstring(FLAGS_target_trace_file);
-  } else if (args.size() >= 2) {
-    // Passed as an unnamed argument.
-    path = args[1];
-  }
-
-  // If no path passed, ask the user.
-  if (path.empty()) {
-    auto file_picker = xe::ui::FilePicker::Create();
-    file_picker->set_mode(ui::FilePicker::Mode::kOpen);
-    file_picker->set_type(ui::FilePicker::Type::kFile);
-    file_picker->set_multi_selection(false);
-    file_picker->set_title(L"Select Trace File");
-    file_picker->set_extensions({
-        {L"Supported Files", L"*.*"}, {L"All Files (*.*)", L"*.*"},
-    });
-    if (file_picker->Show()) {
-      auto selected_files = file_picker->selected_files();
-      if (!selected_files.empty()) {
-        path = selected_files[0];
-      }
-    }
-  }
-
-  if (path.empty()) {
-    xe::FatalError("No trace file specified");
-    return 1;
-  }
-
-  // Normalize the path and make absolute.
-  auto abs_path = xe::to_absolute_path(path);
-
   GL4TraceViewer trace_viewer;
-  if (!trace_viewer.Setup()) {
-    xe::FatalError("Unable to setup trace viewer");
-    return 1;
-  }
-  if (!trace_viewer.Load(std::move(abs_path))) {
-    xe::FatalError("Unable to load trace file; not found?");
-    return 1;
-  }
-  trace_viewer.Run();
-  return 0;
+  return trace_viewer.Main(args);
 }
 
 }  // namespace gl4

src/xenia/gpu/trace_reader.cc

@@ -43,9 +43,8 @@ void TraceReader::Close() {
 
 void TraceReader::ParseTrace() {
   auto trace_ptr = trace_data_;
-  Frame current_frame = {
-      trace_ptr, nullptr, 0,
-  };
+  Frame current_frame;
+  current_frame.start_ptr = trace_ptr;
   const PacketStartCommand* packet_start = nullptr;
   const uint8_t* packet_start_ptr = nullptr;
   const uint8_t* last_ptr = trace_ptr;

src/xenia/gpu/trace_reader.h

@@ -71,9 +71,9 @@ class TraceReader {
       };
     };
 
-    const uint8_t* start_ptr;
-    const uint8_t* end_ptr;
-    int command_count;
+    const uint8_t* start_ptr = nullptr;
+    const uint8_t* end_ptr = nullptr;
+    int command_count = 0;
     std::vector<Command> commands;
   };
 

src/xenia/gpu/trace_viewer.cc

@@ -24,10 +24,13 @@
 #include "xenia/gpu/sampler_info.h"
 #include "xenia/gpu/texture_info.h"
 #include "xenia/memory.h"
+#include "xenia/ui/file_picker.h"
 #include "xenia/ui/imgui_drawer.h"
 #include "xenia/ui/window.h"
 #include "xenia/xbox.h"
 
+DEFINE_string(target_trace_file, "", "Specifies the trace file to load.");
+
 namespace xe {
 namespace gpu {
 
@@ -44,6 +47,57 @@ TraceViewer::TraceViewer() = default;
 
 TraceViewer::~TraceViewer() = default;
 
+int TraceViewer::Main(const std::vector<std::wstring>& args) {
+  // Grab path from the flag or unnamed argument.
+  std::wstring path;
+  if (!FLAGS_target_trace_file.empty()) {
+    // Passed as a named argument.
+    // TODO(benvanik): find something better than gflags that supports
+    // unicode.
+    path = xe::to_wstring(FLAGS_target_trace_file);
+  } else if (args.size() >= 2) {
+    // Passed as an unnamed argument.
+    path = args[1];
+  }
+
+  // If no path passed, ask the user.
+  if (path.empty()) {
+    auto file_picker = xe::ui::FilePicker::Create();
+    file_picker->set_mode(ui::FilePicker::Mode::kOpen);
+    file_picker->set_type(ui::FilePicker::Type::kFile);
+    file_picker->set_multi_selection(false);
+    file_picker->set_title(L"Select Trace File");
+    file_picker->set_extensions({
+        {L"Supported Files", L"*.*"}, {L"All Files (*.*)", L"*.*"},
+    });
+    if (file_picker->Show()) {
+      auto selected_files = file_picker->selected_files();
+      if (!selected_files.empty()) {
+        path = selected_files[0];
+      }
+    }
+  }
+
+  if (path.empty()) {
+    xe::FatalError("No trace file specified");
+    return 1;
+  }
+
+  // Normalize the path and make absolute.
+  auto abs_path = xe::to_absolute_path(path);
+
+  if (!Setup()) {
+    xe::FatalError("Unable to setup trace viewer");
+    return 1;
+  }
+  if (!Load(std::move(abs_path))) {
+    xe::FatalError("Unable to load trace file; not found?");
+    return 1;
+  }
+  Run();
+  return 0;
+}
+
 bool TraceViewer::Setup() {
   // Main display window.
   loop_ = ui::Loop::Create();

src/xenia/gpu/trace_viewer.h

@@ -37,9 +37,7 @@ class TraceViewer {
  public:
   virtual ~TraceViewer();
 
-  bool Setup();
-  bool Load(std::wstring trace_file_path);
-  void Run();
+  int Main(const std::vector<std::wstring>& args);
 
  protected:
   TraceViewer();
@@ -73,6 +71,10 @@ class TraceViewer {
     kHostDisasm,
   };
 
+  bool Setup();
+  bool Load(std::wstring trace_file_path);
+  void Run();
+
   void DrawUI();
   void DrawControllerUI();
   void DrawPacketDisassemblerUI();