Super slow MicroProfile GL UI.

src/xenia/gpu/gl4/gl4_profiler_display.h

@@ -0,0 +1,84 @@
+/**
+ ******************************************************************************
+ * 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_GL4_GL4_PROFILER_DISPLAY_H_
+#define XENIA_GPU_GL4_GL4_PROFILER_DISPLAY_H_
+
+#include <xenia/common.h>
+#include <xenia/gpu/gl4/circular_buffer.h>
+#include <xenia/gpu/gl4/gl_context.h>
+#include <xenia/gpu/gl4/wgl_control.h>
+#include <xenia/profiling.h>
+
+namespace xe {
+namespace gpu {
+namespace gl4 {
+
+class GL4ProfilerDisplay : public ProfilerDisplay {
+ public:
+  GL4ProfilerDisplay(WGLControl* control);
+  virtual ~GL4ProfilerDisplay();
+
+  uint32_t width() const override;
+  uint32_t height() const override;
+
+  // TODO(benvanik): GPU timestamping.
+
+  void Begin() override;
+  void End() override;
+  void DrawBox(int x0, int y0, int x1, int y1, uint32_t color,
+               BoxType type) override;
+  void DrawLine2D(uint32_t count, float* vertices, uint32_t color) override;
+  void DrawText(int x, int y, uint32_t color, const char* text,
+                size_t text_length) override;
+
+ private:
+  struct Vertex {
+    float x;
+    float y;
+    uint32_t color;
+    float u;
+    float v;
+  };
+
+  bool SetupFont();
+  bool SetupState();
+  bool SetupShaders();
+
+  Vertex* BeginVertices(size_t count);
+  void EndVertices(GLenum prim_type);
+  void Flush();
+
+  WGLControl* control_;
+  GLuint program_;
+  GLuint vao_;
+  GLuint font_texture_;
+  GLuint64 font_handle_;
+  CircularBuffer vertex_buffer_;
+
+  static const size_t kMaxCommands = 32;
+  struct {
+    GLenum prim_type;
+    size_t vertex_offset;
+    size_t vertex_count;
+  } draw_commands_[kMaxCommands];
+  uint32_t draw_command_count_;
+
+  CircularBuffer::Allocation current_allocation_;
+
+  struct {
+    uint16_t char_offsets[256];
+  } font_description_;
+};
+
+}  // namespace gl4
+}  // namespace gpu
+}  // namespace xe
+
+#endif  // XENIA_GPU_GL4_GL4_PROFILER_DISPLAY_H_