GPU recording (--trace_gpu=file) and playback (gpu-trace-viewer file).

src/xenia/gpu/trace_viewer_main.cc

@@ -0,0 +1,73 @@
+/**
+ ******************************************************************************
+ * Xenia : Xbox 360 Emulator Research Project                                 *
+ ******************************************************************************
+ * Copyright 2015 Ben Vanik. All rights reserved.                             *
+ * Released under the BSD license - see LICENSE in the root for more details. *
+ ******************************************************************************
+ */
+
+#include <gflags/gflags.h>
+#include "poly/main.h"
+#include "poly/mapped_memory.h"
+#include "xenia/gpu/graphics_system.h"
+#include "xenia/gpu/tracing.h"
+#include "xenia/emulator.h"
+#include "xenia/ui/main_window.h"
+
+DEFINE_string(target_trace_file, "", "Specifies the trace file to load.");
+
+namespace xe {
+namespace gpu {
+
+int trace_viewer_main(std::vector<std::wstring>& args) {
+  // Create the emulator.
+  auto emulator = std::make_unique<Emulator>(L"");
+  X_STATUS result = emulator->Setup();
+  if (XFAILED(result)) {
+    XELOGE("Failed to setup emulator: %.8X", result);
+    return 1;
+  }
+
+  // Grab path from the flag or unnamed argument.
+  if (!FLAGS_target_trace_file.empty() || args.size() >= 2) {
+    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 = poly::to_wstring(FLAGS_target_trace_file);
+    } else {
+      // Passed as an unnamed argument.
+      path = args[1];
+    }
+    // Normalize the path and make absolute.
+    std::wstring abs_path = poly::to_absolute_path(path);
+
+    // TODO(benvanik): UI? replay control on graphics system?
+    auto graphics_system = emulator->graphics_system();
+    auto mmap =
+        poly::MappedMemory::Open(abs_path, poly::MappedMemory::Mode::kRead);
+    auto trace_data = reinterpret_cast<const uint8_t*>(mmap->data());
+    auto trace_size = mmap->size();
+
+    auto trace_ptr = trace_data;
+    while (trace_ptr < trace_data + trace_size) {
+      trace_ptr = graphics_system->PlayTrace(
+          trace_ptr, trace_size - (trace_ptr - trace_data),
+          GraphicsSystem::TracePlaybackMode::kBreakOnSwap);
+    }
+
+    // Wait until we are exited.
+    emulator->main_window()->loop()->AwaitQuit();
+  }
+
+  emulator.reset();
+  return 0;
+}
+
+}  // namespace gpu
+}  // namespace xe
+
+DEFINE_ENTRY_POINT(L"gpu_trace_viewer", L"gpu_trace_viewer some.trace",
+                   xe::gpu::trace_viewer_main);