Factoring out a lot of reusable GPU code from gl4/.

src/xenia/gpu/trace_reader.h

@@ -0,0 +1,102 @@
+/**
+ ******************************************************************************
+ * 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. *
+ ******************************************************************************
+ */
+
+#ifndef XENIA_GPU_TRACE_READER_H_
+#define XENIA_GPU_TRACE_READER_H_
+
+#include <string>
+
+#include "xenia/base/mapped_memory.h"
+#include "xenia/gpu/trace_protocol.h"
+#include "xenia/memory.h"
+
+namespace xe {
+namespace gpu {
+
+// void Foo() {
+//  auto trace_ptr = trace_data;
+//  while (trace_ptr < trace_data + trace_size) {
+//    auto cmd_type = *reinterpret_cast<const TraceCommandType*>(trace_ptr);
+//    switch (cmd_type) {
+//      case TraceCommandType::kPrimaryBufferStart:
+//        break;
+//      case TraceCommandType::kPrimaryBufferEnd:
+//        break;
+//      case TraceCommandType::kIndirectBufferStart:
+//        break;
+//      case TraceCommandType::kIndirectBufferEnd:
+//        break;
+//      case TraceCommandType::kPacketStart:
+//        break;
+//      case TraceCommandType::kPacketEnd:
+//        break;
+//      case TraceCommandType::kMemoryRead:
+//        break;
+//      case TraceCommandType::kMemoryWrite:
+//        break;
+//      case TraceCommandType::kEvent:
+//        break;
+//    }
+//    /*trace_ptr = graphics_system->PlayTrace(
+//    trace_ptr, trace_size - (trace_ptr - trace_data),
+//    GraphicsSystem::TracePlaybackMode::kBreakOnSwap);*/
+//  }
+//}
+
+class TraceReader {
+ public:
+  struct Frame {
+    struct Command {
+      enum class Type {
+        kDraw,
+        kSwap,
+      };
+      const uint8_t* head_ptr;
+      const uint8_t* start_ptr;
+      const uint8_t* end_ptr;
+      Type type;
+      union {
+        struct {
+          //
+        } draw;
+        struct {
+          //
+        } swap;
+      };
+    };
+
+    const uint8_t* start_ptr;
+    const uint8_t* end_ptr;
+    int command_count;
+    std::vector<Command> commands;
+  };
+
+  TraceReader() = default;
+  virtual ~TraceReader() = default;
+
+  const Frame* frame(int n) const { return &frames_[n]; }
+  int frame_count() const { return int(frames_.size()); }
+
+  bool Open(const std::wstring& path);
+
+  void Close();
+
+ protected:
+  void ParseTrace();
+
+  std::unique_ptr<MappedMemory> mmap_;
+  const uint8_t* trace_data_ = nullptr;
+  size_t trace_size_ = 0;
+  std::vector<Frame> frames_;
+};
+
+}  // namespace gpu
+}  // namespace xe
+
+#endif  // XENIA_GPU_TRACE_READER_H_