//?Example?low?level?rendering?Unity?plugin


#include?“UnityPluginInterface.h“

#include?
#include?


//?--------------------------------------------------------------------------
//?Include?headers?for?the?graphics?APIs?we?support

#if?SUPPORT_D3D9
	#include?
#endif
#if?SUPPORT_OPENGL
	#if?UNITY_WIN
		#include?
	#else
		#include?
	#endif
#endif



//?--------------------------------------------------------------------------
//?Helper?function?to?print?a?string

static?void?DebugLog?（const?char*?str）
{
	#if?UNITY_WIN
	OutputDebugStringA?（str）;
	#else
	printf?（“%s“?str）;
	#endif
}



//?--------------------------------------------------------------------------
//?SetTimeFromUnity?an?example?function?we?export?which?is?called?by?one?of?the?scripts.

static?float?g_Time;

extern?“C“?void?EXPORT_API?SetTimeFromUnity?（float?t）?
{
	g_Time?=?t;?
}



//?--------------------------------------------------------------------------
//?UnitySetGraphicsDevice

static?int?g_DeviceType?=?-1;
#if?SUPPORT_D3D9
static?IDirect3DDevice9*?g_D3D9Device;
//?In?D3D9?case?we‘ll?also?create?a?dynamic?vertex?buffer?just?to?demonstrate
//?how?to?handle?D3D9?device?resets.
static?IDirect3DVertexBuffer9*?g_D3D9DynamicVB;
#endif


extern?“C“?void?EXPORT_API?UnitySetGraphicsDevice?（void*?device?int?deviceType?int?eventType）
{
	//?Set?device?type?to?-1?i.e.?“not?recognized?by?our?plugin“
	g_DeviceType?=?-1;
	
	#if?SUPPORT_D3D9
	//?If?we‘ve?got?a?D3D9?device?remember?device?pointer?and?device?type.
	//?The?pointer?we?get?is?IDirect3DDevice9.
	if?（deviceType?==?kGfxRendererD3D9）
	{
		DebugLog?（“Set?D3D9?graphics?device\n“）;
		g_D3D9Device?=?（IDirect3DDevice9*）device;
		g_DeviceType?=?deviceType;

		//?Create?or?release?a?small?dynamic?vertex?buffer?depending?on?the?event?type.
		switch?（eventType）?{
		case?kGfxDeviceEventInitialize:
		case?kGfxDeviceEventAfterReset:
			//?After?device?is?initialized?or?was?just?reset?create?the?VB.
			if?（!g_D3D9DynamicVB）
				g_D3D9Device->CreateVertexBuffer?（1024?D3DUSAGE_WRITEONLY?|?D3DUSAGE_DYNAMIC?0?D3DPOOL_DEFAULT?&g_D3D9DynamicVB?NULL）;
			break;
		case?kGfxDeviceEventBeforeReset:
		case?kGfxDeviceEventShutdown:
			//?Before?device?is?reset?or?being?shut?down?release?the?VB.
			if?（g_D3D9DynamicVB）
			{
				g_D3D9DynamicVB->Release（）;
				g_D3D9DynamicVB?=?NULL;
			}
			break;
		}
	}
	#endif
	

	#if?SUPPORT_OPENGL
	//?If?we‘ve?got?an?OpenGL?device?remember?device?type.?There‘s?no?OpenGL
	//?“device?pointer“?to?remember?since?OpenGL?always?operates?on?a?currently?set
	//?global?context.
	if?（deviceType?==?kGfxRendererOpenGL）
	{
		DebugLog?（“Set?OpenGL?graphics?device\n“）;
		g_DeviceType?=?deviceType;
	}
	#endif
}



//?--------------------------------------------------------------------------
//?SetDefaultGraphicsState
//
//?Helper?function?to?setup?some?“sane“?g