graphics_system.h

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#pragma once
 
#include <string>
 
#include <rex/module.h>
#include <rex/platform.h>
#include <rex/setting.h>
#include <rex/settings_registry.h>
#include <rex/types.h>
 
namespace rex::gpu {
 
struct FrameStats {
  f64 frame_time_ms = 0.0; 
  f64 fps = 0.0;
  u64 frame_count = 0; 
};
 
class REX_GPU_API GraphicsSettings final : public SettingOwner {
 public:
  GraphicsSettings();
 
  REX_SETTING(
      std::string, driver, "any",
      "Graphics driver within the title's family. Values are d3d12, vulkan, null, none for no "
      "driver in an app that does not require one, or any for d3d12 on Windows and vulkan "
      "elsewhere",
      kStartupOnly);
  REX_SETTING(bool, vsync, true, "Wait for vertical blank when presenting");
  REX_SETTING(f64, frame_limit, 0.0, "Most presents per second, 0 for no limit",
              Range{0.0, 1000.0});
  REX_SETTING(i32, resolution_scale_x, 1, "Draw resolution scale X", Range{1, 8}, kRestart);
  REX_SETTING(i32, resolution_scale_y, 1, "Draw resolution scale Y", Range{1, 8}, kRestart);
  REX_SETTING(i32, anisotropic_override, 3,
              "Anisotropic filtering, -1 for the title's choice, 0 for off, 1 to 5 for 1x to 16x",
              Range{-1, 5});
};

REX_DECLARE_INTERFACE(IGraphicsSystem, 1)
  virtual GraphicsSettings& GetSettings() = 0;
 
  virtual bool HasDriver() const = 0;

  virtual std::string GetDriverName() const = 0;

  virtual void ReportFrame() = 0;

  virtual FrameStats GetFrameStats() const = 0;
};
 
}  // namespace rex::gpu