/*****************************************************************************\
     Snes9x - Portable Super Nintendo Entertainment System (TM) emulator.
                This file is licensed under the Snes9x License.
   For further information, consult the LICENSE file in the root directory.
\*****************************************************************************/

/***********************************************************************************
  SNES9X for Mac OS (c) Copyright John Stiles

  Snes9x for Mac OS X

  (c) Copyright 2001 - 2011  zones
  (c) Copyright 2002 - 2005  107
  (c) Copyright 2002         PB1400c
  (c) Copyright 2004         Alexander and Sander
  (c) Copyright 2004 - 2005  Steven Seeger
  (c) Copyright 2005         Ryan Vogt
 ***********************************************************************************/


#include "snes9x.h"
#include "memmap.h"
#include "apu.h"
#include "display.h"
#include "blit.h"

#include <OpenGL/OpenGL.h>
#include <OpenGL/CGLRenderers.h>
#include <OpenGL/gl.h>
#include <OpenGL/glu.h>
#include <OpenGL/glext.h>
#include <AGL/agl.h>
#include <sys/time.h>

#include "mac-prefix.h"
#include "mac-cheatfinder.h"
#include "mac-coreimage.h"
#include "mac-os.h"
#include "mac-quicktime.h"
#include "mac-screenshot.h"
#include "mac-render.h"

typedef void (* Blitter) (uint8 *, int, uint8 *, int, int, int);

static OSStatus BlitMPGLTask (void *);
static OSStatus PrepareMPBlitGL (void);
static void S9xInitFullScreen (void);
static void S9xDeinitFullScreen (void);
static void S9xInitWindowMode (void);
static void S9xDeinitWindowMode (void);
static void S9xInitOpenGLFullScreen (void);
static void S9xDeinitOpenGLFullScreen (void);
static void S9xInitOpenGLWindowMode (void);
static void S9xDeinitOpenGLWindowMode (void);
static void S9xInitBlitGL (void);
static void S9xDeinitBlitGL (void);
static void S9xInitOpenGLContext (void);
static void S9xDeinitOpenGLContext (void);
static void S9xInitCoreImage (void);
static void S9xDeinitCoreImage (void);
static void S9xPutImageOpenGL (int, int);
static void S9xPutImageBlitGL (int, int);
static void S9xPutImageBlitGL2 (int, int);
static void GLMakeScreenMesh (GLfloat *, int, int);
static void GLMakeTextureMesh (GLfloat *, int, int, float, float);
static void GLPrepareTexture (bool8, int, int, int, int, int, int);
static inline void RenderBlitScreen (Blitter, int, int, int, int, int, uint16 *);
#ifndef MAC_LEOPARD_TIGER_PANTHER_SUPPORT
static void SetBestDisplayMode (int, int);
#endif

enum
{
	kMPBlitFrame = 1,
	kMPBlitDone,
	kMPBlitNone
};

enum
{
	kGL256256 = 0,
	kGL256512,
	kGL512256,
	kGL512512,
	kGLBlit2x,
	kGLBlit3x,
	kGLBlit4x,
	kGLNTS256,
	kGLNTS512,
	kGLNumTextures
};

enum
{
	kSC2xNormal = 0,
	kSC2xExtend,
	kSC2xNHiRes,
	kSC2xEHiRes,
	kSC2xNInter,
	kSC2xEInter,
	kSC3xNormal,
	kSC3xExtend,
	kSC3xNHiRes,
	kSC3xEHiRes,
	kSCNTNormal,
	kSCNTExtend,
	kSCNumTextures
};

enum
{
	kSCMeshX = 10,
	kSCMeshY = 9
};

typedef struct
{
	Blitter		blitFn;
	int			nx;
	int			srcWidth;
	int			srcHeight;
	int			copyWidth;
	int			copyHeight;
	uint16		*gfxBuffer;
}	MPData;

typedef struct
{
	GLint		internal_format;
	GLint		format;
	GLint		type;
	GLenum		target;
	GLuint		textures[kGLNumTextures];
	GLfloat		vertex[kGLNumTextures][8];
	GLint		texW[kGLNumTextures];
	GLint		texH[kGLNumTextures];
	GLboolean   rangeExt;
	GLint		storage_hint;
	GLint		storage_apple;
	GLfloat		agp_texturing;
}	OpenGLData;

static uint16				*gfxScreen[2],
							*snesScreenA,
							*snesScreenB;
static uint8				*blitGLBuffer;

static CGDirectDisplayID	gGameDisplayID;

static MPTaskID				taskID            = NULL;
static MPQueueID			notificationQueue = NULL,
							taskQueue         = NULL;
static MPSemaphoreID		readySemaphore    = NULL;
static MPData				*mpBlit           = NULL;

static OpenGLData			OpenGL;
static CGLContextObj		glContext;
static AGLContext			agContext;
static CGLPixelFormatObj	cglpix;
static AGLPixelFormat		aglpix;
static GLint				glSwapInterval    = 0;
static GLint				agSwapInterval    = 0;
#ifdef MAC_LEOPARD_TIGER_PANTHER_SUPPORT
static CFDictionaryRef		oldDisplayMode;
#else
static CGDisplayModeRef		oldDisplayModeRef;
#endif
static CGImageRef			cgGameImage       = NULL,
							cgBlitImage       = NULL;

static int					whichBuf          = 0;
static int					textureNum        = 0;
static int					prevBlitWidth, prevBlitHeight;
static int					imageWidth[2], imageHeight[2];
static int					nx                = 2;

static GLfloat				*scTexArray[kSCNumTextures];
static GLfloat				*scScnArray;

static struct timeval		bencht1, bencht2;

static const int			ntsc_width = SNES_NTSC_OUT_WIDTH(SNES_WIDTH); // 602


void InitGraphics (void)
{
	int	safemarginbytes = (520 * 520 - 512 * 512) * 2;

	snesScreenA  = (uint16 *) calloc( 520 *  520 * 2, 1);
	snesScreenB  = (uint16 *) calloc( 520 *  520 * 2, 1);
	blitGLBuffer = (uint8  *) calloc(1024 * 1024 * 2, 1);

	gfxScreen[0] = snesScreenA + (safemarginbytes >> 2);
	gfxScreen[1] = snesScreenB + (safemarginbytes >> 2);

	GFX.Pitch    = 512 * 2;
	GFX.Screen   = gfxScreen[0];

	if (!snesScreenA || !snesScreenB || !blitGLBuffer)
		QuitWithFatalError(0, "render 01");

#ifdef GFX_MULTI_FORMAT
	S9xSetRenderPixelFormat(RGB555);
	printf("GFX_MULTI_FORMAT is #defined.\n");
#endif

	if (!S9xBlitFilterInit()      |
		!S9xBlit2xSaIFilterInit() |
		!S9xBlitHQ2xFilterInit()  |
		!S9xBlitNTSCFilterInit())
		QuitWithFatalError(0, "render 02");

	switch (videoMode)
	{
		default:
		case VIDEOMODE_NTSC_C:
		case VIDEOMODE_NTSC_TV_C:
			S9xBlitNTSCFilterSet(&snes_ntsc_composite);
			break; 

		case VIDEOMODE_NTSC_S:
		case VIDEOMODE_NTSC_TV_S:
			S9xBlitNTSCFilterSet(&snes_ntsc_svideo);
			break; 

		case VIDEOMODE_NTSC_R:
		case VIDEOMODE_NTSC_TV_R:
			S9xBlitNTSCFilterSet(&snes_ntsc_rgb);
			break; 

		case VIDEOMODE_NTSC_M:
		case VIDEOMODE_NTSC_TV_M:
			S9xBlitNTSCFilterSet(&snes_ntsc_monochrome);
			break;
	}
}

void DeinitGraphics (void)
{
	S9xBlitNTSCFilterDeinit();
	S9xBlitHQ2xFilterDeinit();
	S9xBlit2xSaIFilterDeinit();
	S9xBlitFilterDeinit();

	if (snesScreenA)
	{
		free(snesScreenA);
		snesScreenA  = NULL;
	}

	if (snesScreenB)
	{
		free(snesScreenB);
		snesScreenB  = NULL;
	}

	if (blitGLBuffer)
	{
		free(blitGLBuffer);
		blitGLBuffer = NULL;
	}
}

void DrawPauseScreen (CGContextRef ctx, HIRect bounds)
{
	CGImageRef	image;
	CGRect		rct;
	float		sh, mh, rofs, ry;

	if ((IPPU.RenderedScreenWidth == 0) || (IPPU.RenderedScreenHeight == 0))
		return;

	sh = (float) ((IPPU.RenderedScreenHeight > 256) ? IPPU.RenderedScreenHeight : IPPU.RenderedScreenHeight * 2);
	mh = (float) (SNES_HEIGHT_EXTENDED * 2);

	if (drawoverscan)
	{
		rofs = (mh - sh) / mh;
		ry   = sh / mh;
	}
	else
	if (windowExtend)
	{
		rofs = (mh - sh) / mh / 2.0f;
		ry   = sh / mh;
	}
	else
	{
		rofs = 0.0f;
		ry   = 1.0f;
	}

	image = CreateGameScreenCGImage();
	if (image)
	{
		CGContextSetRGBFillColor(ctx, 0.0f, 0.0f, 0.0f, 1.0f);
		CGContextFillRect(ctx, bounds);

		rct = CGRectMake(0.0f, bounds.size.height * rofs, bounds.size.width, bounds.size.height * ry);
		CGContextDrawImage(ctx, rct, image);

		CGContextSetRGBFillColor(ctx, 0.0f, 0.0f, 0.0f, 0.5f);
		CGContextFillRect(ctx, bounds);

		CGImageRelease(image);
	}
}

void DrawFreezeDefrostScreen (uint8 *draw)
{
	const int	w = SNES_WIDTH << 1, h = kMacWindowHeight;

	imageWidth[0] = imageHeight[0] = 0;
	imageWidth[1] = imageHeight[1] = 0;
	prevBlitWidth = prevBlitHeight = 0;

	if ((drawingMethod == kDrawingBlitGL) && multiprocessor)
	{
		MPWaitOnSemaphore(readySemaphore, kDurationForever);
		printf("MP: Send dummy signal.\n");
		MPNotifyQueue(taskQueue, (void *) kMPBlitNone, 0, 0);
	}

	if (nx < 0 && !ciFilterEnable)
	{
		for (int y = 0; y < h; y++)
			memcpy(blitGLBuffer + y * 1024 * 2, draw + y * w * 2, w * 2);
	}
	else
		memcpy(blitGLBuffer, draw, w * h * 2);

	S9xPutImageBlitGL2(512, kMacWindowHeight);
}

void ClearGFXScreen (void)
{
	memset(gfxScreen[0], 0,  512 *  512 * 2);
	memset(gfxScreen[1], 0,  512 *  512 * 2);
	memset(blitGLBuffer, 0, 1024 * 1024 * 2);

	S9xBlitClearDelta();

	imageWidth[0] = imageHeight[0] = 0;
	imageWidth[1] = imageHeight[1] = 0;
	prevBlitWidth = prevBlitHeight = 0;

	if (fullscreen)
	{
		CGLSetCurrentContext(glContext);
		glViewport(0, 0, glScreenW, glScreenH);
	}
	else
	{
		aglSetCurrentContext(agContext);
		aglUpdateContext(agContext);
		glViewport(0, 0, (GLsizei) gWindowRect.size.width, (GLsizei) gWindowRect.size.height);
	}

	glClearColor(0.0f, 0.0f, 0.0f, 0.0f);

	for (int i = 0; i < 2; i++)
	{
		glClear(GL_COLOR_BUFFER_BIT);

		if (fullscreen)
			CGLFlushDrawable(glContext);
		else
			aglSwapBuffers(agContext);
	}
}

#ifndef MAC_LEOPARD_TIGER_PANTHER_SUPPORT
static void SetBestDisplayMode (int width, int height)
{
	if (autoRes || !gl32bit)
	{
		CGError				err;
		CGDisplayModeRef	mode;
		CFArrayRef			array;
		CFStringRef			pixenc, pix;
		CFIndex				n, i;
		size_t				w, h;
		bool				r;

		pixenc = gl32bit ? CFSTR(IO32BitDirectPixels) : CFSTR(IO16BitDirectPixels);

		array = CGDisplayCopyAllDisplayModes(gGameDisplayID, NULL);
		n = CFArrayGetCount(array);

		for (i = 0; i < n; i++)
		{
			mode = (CGDisplayModeRef) CFArrayGetValueAtIndex(array, i);

			w   = CGDisplayModeGetWidth(mode);
			h   = CGDisplayModeGetHeight(mode);
			pix = CGDisplayModeCopyPixelEncoding(mode);
			r   = CFStringCompare(pix, pixenc, 0) == kCFCompareEqualTo;
			CFRelease(pix);

			if (w == (size_t) width && h == (size_t) height && r)
				break;
		}

		if (i < n)
			err = CGDisplaySetDisplayMode(gGameDisplayID, mode, NULL);

		CFRelease(array);
	}
}
#endif

static void S9xInitFullScreen (void)
{
	DeinitGameWindow();

	size_t	width, height;

	width  = autoRes ? 640 : CGDisplayPixelsWide(gGameDisplayID);
	height = autoRes ? 480 : CGDisplayPixelsHigh(gGameDisplayID);

#ifdef MAC_LEOPARD_TIGER_PANTHER_SUPPORT
	CFDictionaryRef	mode;
	boolean_t		exactMatch;
	size_t			depth = gl32bit ? 32 : 16;

	oldDisplayMode = CGDisplayCurrentMode(gGameDisplayID);
	mode = CGDisplayBestModeForParameters(gGameDisplayID, depth, width, height, &exactMatch);
	CGDisplayCapture(gGameDisplayID);
	CGDisplaySwitchToMode(gGameDisplayID, mode);
#else
	oldDisplayModeRef = CGDisplayCopyDisplayMode(gGameDisplayID);
	CGDisplayCapture(gGameDisplayID);
	SetBestDisplayMode(width, height);
#endif

	CGDisplayErr		cgErr;
	CGDisplayCount		numDisplays, maxDisplays = 32;
	CGDirectDisplayID	activeDisplays[32];

	cgErr = CGGetActiveDisplayList(maxDisplays, activeDisplays, &numDisplays);
	if (cgErr == noErr)
	{
		if ((macControllerOption == SNES_MOUSE) || (macControllerOption == SNES_MOUSE_SWAPPED) || (numDisplays == 1))
			CGDisplayHideCursor(gGameDisplayID);

		if ((macControllerOption == SNES_MOUSE) || (macControllerOption == SNES_MOUSE_SWAPPED))
		{
			CGDisplayMoveCursorToPoint(gGameDisplayID, CGPointMake((float) (width >> 1), (float) (height >> 1)));
			CGAssociateMouseAndMouseCursorPosition(false);
		}
	}
}

static void S9xDeinitFullScreen (void)
{
	CGAssociateMouseAndMouseCursorPosition(true);
	CGDisplayShowCursor(gGameDisplayID);

#ifdef MAC_LEOPARD_TIGER_PANTHER_SUPPORT
	CGDisplaySwitchToMode(gGameDisplayID, oldDisplayMode);
#else
	CGError	err;

	err = CGDisplaySetDisplayMode(gGameDisplayID, oldDisplayModeRef, NULL);
	CGDisplayModeRelease(oldDisplayModeRef);
#endif

	CGDisplayRelease(gGameDisplayID);
}

static void S9xInitWindowMode (void)
{
	Rect	rct;
	size_t	width, height;

	width  = CGDisplayPixelsWide(gGameDisplayID);
	height = CGDisplayPixelsHigh(gGameDisplayID);

#ifdef MAC_LEOPARD_TIGER_PANTHER_SUPPORT
	CFDictionaryRef	mode;
	boolean_t		exactMatch;
	size_t			depth = gl32bit ? 32 : 16;

	oldDisplayMode = CGDisplayCurrentMode(gGameDisplayID);
	mode = CGDisplayBestModeForParameters(gGameDisplayID, depth, width, height, &exactMatch);
	if (exactMatch)
		CGDisplaySwitchToMode(gGameDisplayID, mode);
#else
	oldDisplayModeRef = CGDisplayCopyDisplayMode(gGameDisplayID);
	SetBestDisplayMode(width, height);
#endif

	InitGameWindow();
	ShowWindow(gWindow);

	GetWindowBounds(gWindow, kWindowContentRgn, &rct);
	gWindowRect = CGRectMake((float) rct.left, (float) rct.top, (float) (rct.right - rct.left), (float) (rct.bottom - rct.top));

	UpdateGameWindow();
}

static void S9xDeinitWindowMode (void)
{
#ifdef MAC_LEOPARD_TIGER_PANTHER_SUPPORT
	CGDisplaySwitchToMode(gGameDisplayID, oldDisplayMode);
#else
	CGError	err;

	err = CGDisplaySetDisplayMode(gGameDisplayID, oldDisplayModeRef, NULL);
	CGDisplayModeRelease(oldDisplayModeRef);
#endif

	UpdateGameWindow();
}

static void S9xInitOpenGLFullScreen (void)
{
	CGOpenGLDisplayMask	displayMask;
	GLint 				numPixelFormats;

	displayMask = CGDisplayIDToOpenGLDisplayMask(gGameDisplayID);
	CGLPixelFormatAttribute	attribs[] = { (CGLPixelFormatAttribute) kCGLPFAFullScreen,
										  (CGLPixelFormatAttribute) kCGLPFADoubleBuffer,
										  (CGLPixelFormatAttribute) kCGLPFAAccelerated,
										  (CGLPixelFormatAttribute) kCGLPFANoRecovery,
										  (CGLPixelFormatAttribute) kCGLPFAColorSize,
										  (CGLPixelFormatAttribute) (gl32bit ? 32 : 16),
										  (CGLPixelFormatAttribute) kCGLPFADisplayMask,
										  (CGLPixelFormatAttribute) displayMask,
										  (CGLPixelFormatAttribute) 0 };

	CGLChoosePixelFormat(attribs, &cglpix, &numPixelFormats);
	CGLCreateContext(cglpix, NULL, &glContext);
	glSwapInterval = vsync ? 1 : 0;
	if (extraOptions.benchmark)
		glSwapInterval = 0;
	CGLSetParameter(glContext, kCGLCPSwapInterval, &glSwapInterval);
	CGLSetCurrentContext(glContext);

#ifdef MAC_LEOPARD_TIGER_PANTHER_SUPPORT
	CGLSetFullScreen(glContext);
#else
	CGLSetFullScreenOnDisplay(glContext, CGDisplayIDToOpenGLDisplayMask(gGameDisplayID));
#endif

	glScreenW = CGDisplayPixelsWide(gGameDisplayID);
	glScreenH = CGDisplayPixelsHigh(gGameDisplayID);
}

static void S9xDeinitOpenGLFullScreen (void)
{
	if (glContext)
	{
		CGLSetCurrentContext(NULL);
		CGLClearDrawable(glContext);
		CGLDestroyContext(glContext);
		CGLDestroyPixelFormat(cglpix);
	}
}

static void S9xInitOpenGLWindowMode (void)
{
	GLint	attribs[] = { AGL_RGBA,
						  AGL_DOUBLEBUFFER,
						  AGL_ACCELERATED,
						  AGL_NO_RECOVERY,
						  AGL_PIXEL_SIZE, gl32bit ? 32 : 16,
						  AGL_NONE };

	aglpix = aglChoosePixelFormat(NULL, 0, attribs);
	agContext = aglCreateContext(aglpix, NULL);

	if (systemVersion >= 0x1050)
		aglSetWindowRef(agContext, gWindow);
#ifdef MAC_TIGER_PANTHER_SUPPORT
	else
		aglSetDrawable(agContext, GetWindowPort(gWindow));
#endif

	agSwapInterval = vsync ? 1 : 0;
	if (extraOptions.benchmark)
		agSwapInterval = 0;
	aglSetInteger(agContext, AGL_SWAP_INTERVAL, &agSwapInterval);
	aglSetCurrentContext(agContext);

	if (systemVersion >= 0x1040)
	{
		aglGetCGLPixelFormat(aglpix, (void **) &cglpix);
		aglGetCGLContext(agContext, (void **) &glContext);
	}
}

static void S9xDeinitOpenGLWindowMode (void)
{
	if (agContext)
	{
		if (systemVersion >= 0x1050)
			aglSetWindowRef(agContext, NULL);
	#ifdef MAC_TIGER_PANTHER_SUPPORT
		else
			aglSetDrawable(agContext, NULL);
	#endif

		aglSetCurrentContext(NULL);
		aglDestroyContext(agContext);
		aglDestroyPixelFormat(aglpix);
	}
}

static void S9xInitBlitGL (void)
{
	if (multiprocessor)
	{
		printf("MP: Creating BlitGL thread.\n");

		if (noErr != PrepareMPBlitGL())
			multiprocessor = false;
	}
}

static void S9xDeinitBlitGL (void)
{
	if (multiprocessor)
	{
		MPNotifyQueue(taskQueue, (void *) kMPBlitDone, 0, 0);
		MPWaitOnQueue(notificationQueue, NULL, NULL, NULL, kDurationForever);
		MPDeleteQueue(notificationQueue);
		notificationQueue = NULL;

		printf("MP: Successfully received terminate signal from BlitGL thread.\n");
	}
}

static void GLPrepareTexture (bool8 useRange, int texNo, int rangeOnW, int rangeOnH, int rangeOffW, int rangeOffH, int filter)
{
	bool8	rangeAvailable = OpenGL.rangeExt & useRange;

	OpenGL.texW[texNo] = rangeAvailable ? rangeOnW : rangeOffW;
	OpenGL.texH[texNo] = rangeAvailable ? rangeOnH : rangeOffH;

	OpenGL.vertex[texNo][0] = 0;
	OpenGL.vertex[texNo][1] = 0;
	OpenGL.vertex[texNo][2] = rangeAvailable ? rangeOnW : 1;
	OpenGL.vertex[texNo][3] = 0;
	OpenGL.vertex[texNo][4] = rangeAvailable ? rangeOnW : 1;
	OpenGL.vertex[texNo][5] = rangeAvailable ? rangeOnH : 1;
	OpenGL.vertex[texNo][6] = 0;
	OpenGL.vertex[texNo][7] = rangeAvailable ? rangeOnH : 1;

	glBindTexture(OpenGL.target, OpenGL.textures[texNo]);

	if (rangeAvailable)
	{
		glTextureRangeAPPLE(OpenGL.target, OpenGL.texW[texNo] * OpenGL.texH[texNo] * 2, GFX.Screen);
		glTexParameteri(OpenGL.target, GL_TEXTURE_STORAGE_HINT_APPLE, OpenGL.storage_hint);
	}

	glTexParameterf(OpenGL.target, GL_TEXTURE_PRIORITY, OpenGL.agp_texturing);
	glTexParameteri(OpenGL.target, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
	glTexParameteri(OpenGL.target, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
	glTexParameteri(OpenGL.target, GL_TEXTURE_MAG_FILTER, filter);
	glTexParameteri(OpenGL.target, GL_TEXTURE_MIN_FILTER, filter);
	glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
	glTexImage2D(OpenGL.target, 0, OpenGL.internal_format, OpenGL.texW[texNo], OpenGL.texH[texNo], 0, OpenGL.format, OpenGL.type, GFX.Screen);
}

static void GLMakeScreenMesh (GLfloat *vertex3D, int meshx, int meshy)
{
	GLfloat *v;
	float   warp;

	v = vertex3D;
	warp = macCurvatureWarp * 0.001f;

	for (int y = 0; y < meshy; y++)
	{
		for (int x = 0; x <= meshx; x++)
		{
			float	u1, v1, v2;

			u1 = -1.0f + 2.0f / (float) meshx * (float)  x;
			v1 = -1.0f + 2.0f / (float) meshy * (float)  y;
			v2 = -1.0f + 2.0f / (float) meshy * (float) (y + 1);

			*v++ = u1;
			*v++ = v2;
			*v++ = -1.0f - (u1 * u1 + v2 * v2) * warp;

			*v++ = u1;
			*v++ = v1;
			*v++ = -1.0f - (u1 * u1 + v1 * v1) * warp;
		}
	}
}

static void GLMakeTextureMesh (GLfloat *vertex2D, int meshx, int meshy, float lx, float ly)
{
	GLfloat *v;

	v = vertex2D;

	for (int y = meshy; y > 0; y--)
	{
		for (int x = 0; x <= meshx; x++)
		{
			float	u1, v1, v2;

			u1 = lx / (float) meshx * (float)  x;
			v1 = ly / (float) meshy * (float)  y;
			v2 = ly / (float) meshy * (float) (y - 1);

			*v++ = u1;
			*v++ = v2;

			*v++ = u1;
			*v++ = v1;
		}
	}
}

static void S9xInitOpenGLContext (void)
{
	OpenGL.internal_format = GL_RGB5_A1;
	OpenGL.format          = GL_BGRA;
	OpenGL.type            = GL_UNSIGNED_SHORT_1_5_5_5_REV;
	OpenGL.rangeExt        = gluCheckExtension((const GLubyte *) "GL_APPLE_texture_range", glGetString(GL_EXTENSIONS));
	OpenGL.target          = OpenGL.rangeExt ? GL_TEXTURE_RECTANGLE_EXT : GL_TEXTURE_2D;

	OpenGL.storage_apple   = extraOptions.glUseClientStrageApple ? 1    : 0;
	OpenGL.agp_texturing   = extraOptions.glUseTexturePriority   ? 0.0f : 1.0f;
	switch (extraOptions.glStorageHint)
	{
		case 1:	OpenGL.storage_hint = GL_STORAGE_PRIVATE_APPLE;	break;
		case 2:	OpenGL.storage_hint = GL_STORAGE_CACHED_APPLE;	break;
		case 3:	OpenGL.storage_hint = GL_STORAGE_SHARED_APPLE;	break;
	}

	if (screencurvature || videoMode >= VIDEOMODE_NTSC_C || extraOptions.glForceNoTextureRectangle)
	{
		OpenGL.rangeExt = false;
		OpenGL.target   = GL_TEXTURE_2D;
	}

	printf("TextureRange: %s\n", OpenGL.rangeExt ? "enable" : "disable");

	glDisable(GL_BLEND);
	glDisable(GL_DITHER);
	glDisable(GL_LIGHTING);
	glDisable(GL_DEPTH_TEST);

	glEnable(GL_CULL_FACE);
	glPolygonMode(GL_FRONT, GL_FILL);
	glCullFace(GL_BACK);

	glDisable(GL_TEXTURE_2D);
	glDisable(GL_TEXTURE_RECTANGLE_EXT);
	glEnable(OpenGL.target);

	glGenTextures(kGLNumTextures, OpenGL.textures);

	glPixelStorei(GL_UNPACK_CLIENT_STORAGE_APPLE, OpenGL.storage_apple);
	glPixelStorei(GL_UNPACK_ALIGNMENT, 8);

	int	filter = (videoMode == VIDEOMODE_SMOOTH) ? GL_LINEAR : GL_NEAREST;
	GLPrepareTexture(true,  kGL256256, SNES_WIDTH,     SNES_HEIGHT_EXTENDED,      256,  256, filter);
	GLPrepareTexture(true,  kGL256512, SNES_WIDTH,     SNES_HEIGHT_EXTENDED * 2,  256,  512, filter);
	GLPrepareTexture(true,  kGL512256, SNES_WIDTH * 2, SNES_HEIGHT_EXTENDED,      512,  256, filter);
	GLPrepareTexture(true,  kGL512512, SNES_WIDTH * 2, SNES_HEIGHT_EXTENDED * 2,  512,  512, filter);
	GLPrepareTexture(true,  kGLBlit2x, SNES_WIDTH * 2, SNES_HEIGHT_EXTENDED * 2,  512,  512, GL_LINEAR);
	GLPrepareTexture(true,  kGLBlit3x, SNES_WIDTH * 3, SNES_HEIGHT_EXTENDED * 3, 1024, 1024, GL_LINEAR);
	GLPrepareTexture(true,  kGLBlit4x, SNES_WIDTH * 4, SNES_HEIGHT_EXTENDED * 4, 1024, 1024, GL_LINEAR);
	GLPrepareTexture(false, kGLNTS256, 1024,           256,                      1024,  256, GL_LINEAR);
	GLPrepareTexture(false, kGLNTS512, 1024,           512,                      1024,  512, GL_LINEAR);

	if (!screencurvature)
	{
		glMatrixMode(GL_PROJECTION);
		glLoadIdentity();

		glMatrixMode(GL_MODELVIEW);
		glLoadIdentity();

		glDisableClientState(GL_VERTEX_ARRAY);
		glDisableClientState(GL_TEXTURE_COORD_ARRAY);
	}
	else
	{
		glMatrixMode(GL_PROJECTION);
		glLoadIdentity();
		glFrustum(-1.0, 1.0, -1.0, 1.0, 0.95, 5.0);

		glMatrixMode(GL_MODELVIEW);
		glLoadIdentity();

		glEnableClientState(GL_VERTEX_ARRAY);
		glEnableClientState(GL_TEXTURE_COORD_ARRAY);

		int	mesh = (kSCMeshX + 1) * 2 * kSCMeshY * 2;
		scTexArray[kSC2xNormal] = new GLfloat [mesh];
		scTexArray[kSC2xExtend] = new GLfloat [mesh];
		scTexArray[kSC2xNHiRes] = new GLfloat [mesh];
		scTexArray[kSC2xEHiRes] = new GLfloat [mesh];
		scTexArray[kSC2xNInter] = new GLfloat [mesh];
		scTexArray[kSC2xEInter] = new GLfloat [mesh];
		scTexArray[kSC3xNormal] = new GLfloat [mesh];
		scTexArray[kSC3xExtend] = new GLfloat [mesh];
		scTexArray[kSC3xNHiRes] = new GLfloat [mesh];
		scTexArray[kSC3xEHiRes] = new GLfloat [mesh];
		scTexArray[kSCNTNormal] = new GLfloat [mesh];
		scTexArray[kSCNTExtend] = new GLfloat [mesh];

		GLMakeTextureMesh(scTexArray[kSC2xNormal], kSCMeshX, kSCMeshY,                         1.0f, 224.0f /  256.0f);
		GLMakeTextureMesh(scTexArray[kSC2xExtend], kSCMeshX, kSCMeshY,                         1.0f, 239.0f /  256.0f);
		GLMakeTextureMesh(scTexArray[kSC2xNHiRes], kSCMeshX, kSCMeshY,                         1.0f, 224.0f /  512.0f);
		GLMakeTextureMesh(scTexArray[kSC2xEHiRes], kSCMeshX, kSCMeshY,                         1.0f, 239.0f /  512.0f);
		GLMakeTextureMesh(scTexArray[kSC2xNInter], kSCMeshX, kSCMeshY,             256.0f /  512.0f, 224.0f /  256.0f);
		GLMakeTextureMesh(scTexArray[kSC2xEInter], kSCMeshX, kSCMeshY,             256.0f /  512.0f, 239.0f /  256.0f);
		GLMakeTextureMesh(scTexArray[kSC3xNormal], kSCMeshX, kSCMeshY,             768.0f / 1024.0f, 672.0f / 1024.0f);
		GLMakeTextureMesh(scTexArray[kSC3xExtend], kSCMeshX, kSCMeshY,             768.0f / 1024.0f, 717.0f / 1024.0f);
		GLMakeTextureMesh(scTexArray[kSC3xNHiRes], kSCMeshX, kSCMeshY,             768.0f / 1024.0f, 672.0f / 2048.0f);
		GLMakeTextureMesh(scTexArray[kSC3xEHiRes], kSCMeshX, kSCMeshY,             768.0f / 1024.0f, 717.0f / 2048.0f);
		GLMakeTextureMesh(scTexArray[kSCNTNormal], kSCMeshX, kSCMeshY, (float) ntsc_width / 1024.0f, 224.0f /  256.0f);
		GLMakeTextureMesh(scTexArray[kSCNTExtend], kSCMeshX, kSCMeshY, (float) ntsc_width / 1024.0f, 239.0f /  256.0f);

		scScnArray = new GLfloat [(kSCMeshX + 1) * 2 * kSCMeshY * 3];
		GLMakeScreenMesh(scScnArray, kSCMeshX, kSCMeshY);
	}

	if (fullscreen)
	{
		CGLSetCurrentContext(glContext);
		glViewport(0, 0, glScreenW, glScreenH);
	}
	else
	{
		aglSetCurrentContext(agContext);
		aglUpdateContext(agContext);
		glViewport(0, 0, (GLsizei) gWindowRect.size.width, (GLsizei) gWindowRect.size.height);
	}

	glClearColor(0.0f, 0.0f, 0.0f, 0.0f);

	for (int i = 0; i < 2; i++)
	{
		glClear(GL_COLOR_BUFFER_BIT);

		if (fullscreen)
			CGLFlushDrawable(glContext);
		else
			aglSwapBuffers(agContext);
	}
}

static void S9xDeinitOpenGLContext (void)
{
	if (screencurvature)
	{
		delete [] scTexArray[kSC2xNormal];
		delete [] scTexArray[kSC2xExtend];
		delete [] scTexArray[kSC2xNHiRes];
		delete [] scTexArray[kSC2xEHiRes];
		delete [] scTexArray[kSC2xNInter];
		delete [] scTexArray[kSC2xEInter];
		delete [] scTexArray[kSC3xNormal];
		delete [] scTexArray[kSC3xExtend];
		delete [] scTexArray[kSC3xNHiRes];
		delete [] scTexArray[kSC3xEHiRes];
		delete [] scTexArray[kSCNTNormal];
		delete [] scTexArray[kSCNTExtend];
		delete [] scScnArray;

		scTexArray[kSC2xNormal] = NULL;
		scTexArray[kSC2xExtend] = NULL;
		scTexArray[kSC2xNHiRes] = NULL;
		scTexArray[kSC2xEHiRes] = NULL;
		scTexArray[kSC2xNInter] = NULL;
		scTexArray[kSC2xEInter] = NULL;
		scTexArray[kSC3xNormal] = NULL;
		scTexArray[kSC3xExtend] = NULL;
		scTexArray[kSC3xNHiRes] = NULL;
		scTexArray[kSC3xEHiRes] = NULL;
		scTexArray[kSCNTNormal] = NULL;
		scTexArray[kSCNTExtend] = NULL;
		scScnArray              = NULL;
	}

	glDeleteTextures(kGLNumTextures, OpenGL.textures);
}

static void S9xInitCoreImage (void)
{
	cgGameImage = NULL;
	cgBlitImage = NULL;

	InitCoreImageContext(glContext, cglpix);
}

static void S9xDeinitCoreImage (void)
{
	DeinitCoreImageContext();

	if (cgGameImage)
	{
		CGImageRelease(cgGameImage);
		cgGameImage = NULL;
	}

	if (cgBlitImage)
	{
		CGImageRelease(cgBlitImage);
		cgBlitImage = NULL;
	}
}

void GetGameDisplay (int *w, int *h)
{
	CGDisplayErr		cgErr;
	CGDisplayCount		numDisplays, maxDisplays = 32;
	CGDirectDisplayID	activeDisplays[32];
	CGPoint				windowAt;

	gGameDisplayID = CGMainDisplayID();

	windowAt = CGPointMake((float) windowPos[kWindowScreen].h, (float) windowPos[kWindowScreen].v);

	cgErr = CGGetDisplaysWithPoint(windowAt, maxDisplays, activeDisplays, &numDisplays);
	if ((cgErr == noErr) && (numDisplays > 0))
	{
		for (unsigned int i = 0; i < numDisplays; i++)
		{
			if (activeDisplays[i] != CGMainDisplayID())
				gGameDisplayID = activeDisplays[i];
		}
	}

	if (w != NULL && h != NULL)
	{
		*w = CGDisplayPixelsWide(gGameDisplayID);
		*h = CGDisplayPixelsHigh(gGameDisplayID);
	}
}

void S9xInitDisplay (int argc, char **argv)
{
	if (directDisplay)
		return;

	GetGameDisplay(NULL, NULL);

	glScreenBounds = CGDisplayBounds(gGameDisplayID);

	unlimitedCursor = CGPointMake(0.0f, 0.0f);

	imageWidth[0] = imageHeight[0] = 0;
	imageWidth[1] = imageHeight[1] = 0;
	prevBlitWidth = prevBlitHeight = 0;
	GFX.Screen    = gfxScreen[0];
	whichBuf      = 0;
	textureNum    = 0;

	switch (videoMode)
	{
		case VIDEOMODE_HQ4X:
			nx =  4;
			break;

		case VIDEOMODE_HQ3X:
			nx =  3;
			break;

		case VIDEOMODE_NTSC_C:
		case VIDEOMODE_NTSC_S:
		case VIDEOMODE_NTSC_R:
		case VIDEOMODE_NTSC_M:
			nx = -1;
			break;

		case VIDEOMODE_NTSC_TV_C:
		case VIDEOMODE_NTSC_TV_S:
		case VIDEOMODE_NTSC_TV_R:
		case VIDEOMODE_NTSC_TV_M:
			nx = -2;
			break;

		default:
			nx =  2;
			break;
	}

	if (fullscreen)
	{
		S9xInitFullScreen();
		S9xInitOpenGLFullScreen();
	}
	else
	{
		S9xInitWindowMode();
		S9xInitOpenGLWindowMode();
	}

	S9xInitOpenGLContext();
	if (ciFilterEnable)
		S9xInitCoreImage();
	if (drawingMethod == kDrawingBlitGL)
		S9xInitBlitGL();

	S9xSetSoundMute(false);
	Microseconds((UnsignedWide *) &lastFrame);

	windowResizeCount = 1;

	gettimeofday(&bencht1, NULL);

	directDisplay = true;
}

void S9xDeinitDisplay (void)
{
	if (!directDisplay)
		return;

	S9xSetSoundMute(true);

	if (drawingMethod == kDrawingBlitGL)
		S9xDeinitBlitGL();
	if (ciFilterEnable)
		S9xDeinitCoreImage();
	S9xDeinitOpenGLContext();

	if (fullscreen)
	{
		S9xDeinitOpenGLFullScreen();
		S9xDeinitFullScreen();
	}
	else
	{
		S9xDeinitOpenGLWindowMode();
		S9xDeinitWindowMode();
	}

	directDisplay = false;
}

bool8 S9xInitUpdate (void)
{
	return (true);
}

bool8 S9xDeinitUpdate (int width, int height)
{
	if (directDisplay)
		S9xPutImage(width, height);

	return (true);
}

bool8 S9xContinueUpdate (int width, int height)
{
	return (true);
}

static inline void RenderBlitScreen (Blitter Fn, int x, int sW, int sH, int cW, int cH, uint16 *buf)
{
	switch (x)
	{
		case -1:
			(Fn) ((uint8 *) buf, sW * 2, blitGLBuffer, 1024 * 2, sW, sH);
			break;

		case -2:
			if (sH > SNES_HEIGHT_EXTENDED)
				(Fn) ((uint8 *) buf, sW * 2, blitGLBuffer, 1024 * 2, sW, sH);
			else
			{
				uint8	*tmpBuffer = blitGLBuffer + (1024 * 512 * 2);
				int		aligned    = ((ntsc_width + 2) >> 1) << 1;
				(Fn) ((uint8 *) buf, sW * 2, tmpBuffer, 1024 * 2, sW, sH);
				S9xBlitPixMixedTV1x2(tmpBuffer, 1024 * 2, blitGLBuffer, 1024 * 2, aligned, cH);
				cH *= 2;
			}

			break;

		default:
			int	dstbytes = (OpenGL.rangeExt ? cW : ((cW > 512) ? 1024 : ((cW > 256) ? 512 : 256))) * 2;
			(Fn) ((uint8 *) buf, sW * 2, blitGLBuffer, dstbytes, sW, sH);
			break;
	}

	S9xPutImageBlitGL2(cW, cH);
}

static OSStatus PrepareMPBlitGL (void)
{
	OSStatus	err;

	mpBlit = (MPData *) MPAllocateAligned(sizeof(MPData), kMPAllocateDefaultAligned, kMPAllocateClearMask);
	if (!mpBlit)
		return (memFullErr);

	err = MPCreateQueue(&notificationQueue);
	if (err == noErr)
	{
		err = MPCreateQueue(&taskQueue);
		if (err == noErr)
		{
			err = MPCreateBinarySemaphore(&readySemaphore);
			if (err == noErr)
			{
				MPSignalSemaphore(readySemaphore);
				err = MPCreateTask(BlitMPGLTask, NULL, 0, notificationQueue, NULL, NULL, 0, &taskID);
			}
		}
	}

	return (err);
}

static OSStatus BlitMPGLTask (void *parameter)
{
	OSStatus	err = noErr;
	int32		theCommand, param1, param2;

	printf("MP: Entered BlitGL thread.\n");

	for (;;)
	{
		err = MPWaitOnQueue(taskQueue, (void **) &theCommand, (void **) &param1, (void **) &param2, kDurationForever);
		if (err)
			break;

		if (theCommand == kMPBlitFrame)
		{
			RenderBlitScreen(mpBlit->blitFn, mpBlit->nx, mpBlit->srcWidth, mpBlit->srcHeight, mpBlit->copyWidth, mpBlit->copyHeight, mpBlit->gfxBuffer);
			MPSignalSemaphore(readySemaphore);
		}
		else
		if (theCommand == kMPBlitNone)
			MPSignalSemaphore(readySemaphore);
		else
		if (theCommand == kMPBlitDone)
			break;
		else
		{
			err = userCanceledErr;
			break;
		}
	}

	MPFree(mpBlit);
	MPDeleteSemaphore(readySemaphore);
	MPDeleteQueue(taskQueue);
	mpBlit         = NULL;
	readySemaphore = NULL;
	taskQueue      = NULL;

	printf("MP: Exited BlitGL thread.\n");

	return (err);
}

void S9xPutImage (int width, int height)
{
	static float	fps   = 0.0f;
	static long		count = 0;
	static char		text[32];

	if (extraOptions.benchmark)
	{
		uint16	*basePtr;
		long	delta;
		size_t	len;

		count++;

		gettimeofday(&bencht2, NULL);

		delta = 1000000 * (bencht2.tv_sec - bencht1.tv_sec) + (bencht2.tv_usec - bencht1.tv_usec);
		if (delta > 1000000)
		{
			fps = (1000000.0f * (float) count) / (float) delta;
			count = 0;

			gettimeofday(&bencht1, NULL);
		}

		sprintf(text, "%.1f", fps);

		basePtr = GFX.Screen + 1;
		len = strlen(text);

		for (unsigned int i = 0; i < len; i++)
		{
			S9xDisplayChar(basePtr, text[i]);
			basePtr += (8 - 1);
		}
	}
	else
	{
		if (cfIsWatching)
			CheatFinderDrawWatchAddr();

		if (Settings.DisplayFrameRate)
		{
			static int	drawnFrames[60] = { 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
											1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 };
			static int	tableIndex = 0;
			int			frameCalc  = 0;

			drawnFrames[tableIndex] = skipFrames;

			if (Settings.TurboMode)
			{
				drawnFrames[tableIndex] = (drawnFrames[tableIndex] + (macFastForwardRate / 2)) / macFastForwardRate;
				if (drawnFrames[tableIndex] == 0)
					drawnFrames[tableIndex] = 1;
			}

			tableIndex = (tableIndex + 1) % 60;

			for (int i = 0; i < 60; i++)
				frameCalc += drawnFrames[i];

			IPPU.DisplayedRenderedFrameCount = (Memory.ROMFramesPerSecond * 60) / frameCalc;
		}
	}

	switch (drawingMethod)
	{
		case kDrawingOpenGL:
			S9xPutImageOpenGL(width, height);
			break;

		case kDrawingBlitGL:
			S9xPutImageBlitGL(width, height);
			break;
	}
}

static void S9xPutImageOpenGL (int width, int height)
{
	int	orig_height = height;

	if ((imageWidth[0] != width) || (imageHeight[0] != height))
		windowResizeCount += 2;

	if (windowResizeCount > 0)
	{
		if (drawoverscan && (height % SNES_HEIGHT == 0))
		{
			int		pitch    = width << 1;
			int		extbtm   = (height > 256) ? (SNES_HEIGHT_EXTENDED << 1) : SNES_HEIGHT_EXTENDED;
			uint32	*extarea = (uint32 *) ((uint8 *) GFX.Screen + height * pitch);

			for (int i = 0; i < (((extbtm - height) * pitch) >> 2); i++)
				extarea[i] = 0;

			height = extbtm;
		}

		int	vh = (height > 256) ? height : (height << 1);

		if (fullscreen)
		{
			CGLSetCurrentContext(glContext);

			glViewport(0, 0, glScreenW, glScreenH);
			glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
			glClear(GL_COLOR_BUFFER_BIT);

			if (glstretch)
			{
				float   fpw = (float) glScreenH / vh * 512.0f;
				int		pw  = (int) (fpw + ((float) glScreenW - fpw) * (float) macAspectRatio / 10000.0);

				glViewport((glScreenW - pw) >> 1, 0, pw, glScreenH);
			}
			else
				glViewport((glScreenW - 512) >> 1, (glScreenH - vh) >> 1, 512, vh);
		}
		else
		{
			int	ww = (int) gWindowRect.size.width,
				wh = (int) gWindowRect.size.height;

			aglSetCurrentContext(agContext);
			aglUpdateContext(agContext);

			glViewport(0, 0, ww, wh);
			glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
			glClear(GL_COLOR_BUFFER_BIT);

			if (windowExtend)
				glViewport(0, ((kMacWindowHeight - vh) >> 1) * wh / kMacWindowHeight, ww, vh * wh / kMacWindowHeight);
		}

		glPixelStorei(GL_UNPACK_ROW_LENGTH, width);

		if (!ciFilterEnable)
		{
			textureNum = (width <= 256) ? ((height <= 256) ? kGL256256 : kGL256512) : ((height <= 256) ? kGL512256 : kGL512512);
			OpenGL.vertex[textureNum][5] = OpenGL.vertex[textureNum][7] = OpenGL.rangeExt ? height : (vh / 512.0f);
			glBindTexture(OpenGL.target, OpenGL.textures[textureNum]);
		}
		else
		{
			glMatrixMode(GL_PROJECTION);
			glLoadIdentity();
			glOrtho(0, width, orig_height - height, orig_height, -1, 1);

			if (cgGameImage)
				CGImageRelease(cgGameImage);
			cgGameImage = CreateGameScreenCGImage();
		}

		imageWidth[0]  = width;
		imageHeight[0] = height;

		windowResizeCount--;
	}
	else
	{
		if (drawoverscan)
			height = (height > 256) ? (SNES_HEIGHT_EXTENDED << 1) : SNES_HEIGHT_EXTENDED;
	}

	if (!ciFilterEnable)
	{
		glTexSubImage2D(OpenGL.target, 0, 0, 0, OpenGL.texW[textureNum], OpenGL.texH[textureNum], OpenGL.format, OpenGL.type, GFX.Screen);

		if (!screencurvature)
		{
			glBegin(GL_QUADS);

			glTexCoord2fv(&OpenGL.vertex[textureNum][6]);
			glVertex2f(-1.0f, -1.0f);
			glTexCoord2fv(&OpenGL.vertex[textureNum][4]);
			glVertex2f( 1.0f, -1.0f);
			glTexCoord2fv(&OpenGL.vertex[textureNum][2]);
			glVertex2f( 1.0f,  1.0f);
			glTexCoord2fv(&OpenGL.vertex[textureNum][0]);
			glVertex2f(-1.0f,  1.0f);

			glEnd();
		}
		else
		{
			GLfloat *t, *s;

			t = scTexArray[(height % SNES_HEIGHT) ? kSC2xExtend : kSC2xNormal];
			s = scScnArray;

			for (int i = 0; i < kSCMeshY; i++)
			{
				glTexCoordPointer(2, GL_FLOAT, 0, t);
				glVertexPointer(3, GL_FLOAT, 0, s);
				glDrawArrays(GL_TRIANGLE_STRIP, 0, (kSCMeshX + 1) * 2);

				t += (kSCMeshX + 1) * 2 * 2;
				s += (kSCMeshX + 1) * 2 * 3;
			}
		}

		glFinishObjectAPPLE(GL_TEXTURE, OpenGL.textures[textureNum]);
	}
	else
	{
		CGRect	src;

		src = CGRectMake(0, 0, width, orig_height);
		DrawWithCoreImageFilter(src, cgGameImage);
	}

	if (fullscreen)
		CGLFlushDrawable(glContext);
	else
		aglSwapBuffers(agContext);
}

static void S9xPutImageBlitGL (int width, int height)
{
	Blitter	blitFn;
	int		copyWidth, copyHeight;

	if ((imageWidth[whichBuf] != width) || (imageHeight[whichBuf] != height))
	{
		if ((videoMode == VIDEOMODE_TV) && (width <= 256))
			S9xBlitClearDelta();

		if (drawoverscan && (height % SNES_HEIGHT == 0))
		{
			memset(blitGLBuffer, 0, 1024 * 1024 * 2);

			int		pitch    = width << 1;
			int		extbtm   = (height > 256) ? (SNES_HEIGHT_EXTENDED << 1) : SNES_HEIGHT_EXTENDED;
			uint32	*extarea = (uint32 *) ((uint8 *) GFX.Screen + height * pitch);

			for (int i = 0; i < (((extbtm - height) * pitch) >> 2); i++)
				extarea[i] = 0;

			height = extbtm;
		}
	}
	else
	{
		if (drawoverscan)
			height = (height > 256) ? (SNES_HEIGHT_EXTENDED << 1) : SNES_HEIGHT_EXTENDED;
	}

	switch (nx)
	{
		default:
		case 2:
			if (videoMode == VIDEOMODE_BLEND)
			{
				if (width <= 256)
				{
					copyWidth  = width  * 2;
					copyHeight = height;
					blitFn = S9xBlitPixBlend2x1;
				}
				else
				{
					copyWidth  = width;
					copyHeight = height;
					blitFn = S9xBlitPixBlend1x1;
				}
			}
			else
			if (height <= 256)
			{
				if (width <= 256)
				{
					copyWidth  = width  * 2;
					copyHeight = height * 2;

					switch (videoMode)
					{
						default:
						case VIDEOMODE_TV:			blitFn = S9xBlitPixTV2x2;			break;
						case VIDEOMODE_SUPEREAGLE:	blitFn = S9xBlitPixSuperEagle16;	break;
						case VIDEOMODE_2XSAI:		blitFn = S9xBlitPix2xSaI16;			break;
						case VIDEOMODE_SUPER2XSAI:	blitFn = S9xBlitPixSuper2xSaI16;	break;
						case VIDEOMODE_EPX:			blitFn = S9xBlitPixEPX16;			break;
						case VIDEOMODE_HQ2X:		blitFn = S9xBlitPixHQ2x16;			break;
					}
				}
				else
				{
					if (videoMode == VIDEOMODE_TV)
					{
						copyWidth  = width;
						copyHeight = height * 2;
						blitFn = S9xBlitPixTV1x2;
					}
					else
					{
						copyWidth  = width;
						copyHeight = height;
						blitFn = S9xBlitPixSimple1x1;
					}
				}
			}
			else
			{
				copyWidth  = width;
				copyHeight = height;
				blitFn = S9xBlitPixSimple1x1;
			}

			break;

		case 3:
			if (width <= 256 && height <= 256)
			{
				copyWidth  = width  * 3;
				copyHeight = height * 3;
				blitFn = S9xBlitPixHQ3x16;
			}
			else
			{
				copyWidth  = width;
				copyHeight = height;
				blitFn = S9xBlitPixSimple1x1;
			}

			break;

		case 4:
			if (width <= 256 && height <= 256)
			{
				copyWidth  = width  * 4;
				copyHeight = height * 4;
				blitFn = S9xBlitPixHQ4x16;
			}
			else
			if (width >  256 && height  > 256)
			{
				copyWidth  = width  * 2;
				copyHeight = height * 2;
				blitFn = S9xBlitPixHQ2x16;
			}
			else
			{
				copyWidth  = width;
				copyHeight = height;
				blitFn = S9xBlitPixSimple1x1;
			}

			break;

		case -1:
		case -2:
			copyWidth  = ntsc_width;
			copyHeight = height;

			if (width <= 256)
				blitFn = S9xBlitPixNTSC16;
			else
				blitFn = S9xBlitPixHiResNTSC16;

			break;
	}

	imageWidth[whichBuf]  = width;
	imageHeight[whichBuf] = height;

	if (multiprocessor)
	{
		MPWaitOnSemaphore(readySemaphore, kDurationForever);

		mpBlit->nx          = nx;
		mpBlit->blitFn      = blitFn;
		mpBlit->srcWidth    = width;
		mpBlit->srcHeight   = height;
		mpBlit->copyWidth   = copyWidth;
		mpBlit->copyHeight  = copyHeight;
		mpBlit->gfxBuffer   = GFX.Screen;

		MPNotifyQueue(taskQueue, (void *) kMPBlitFrame, 0, 0);

		whichBuf = 1 - whichBuf;
		GFX.Screen = gfxScreen[whichBuf];
	}
	else
		RenderBlitScreen(blitFn, nx, width, height, copyWidth, copyHeight, GFX.Screen);
}

static void S9xPutImageBlitGL2 (int blit_width, int blit_height)
{
	if ((prevBlitWidth != blit_width) || (prevBlitHeight != blit_height))
		windowResizeCount += 2;

	if (windowResizeCount > 0)
	{
		if (fullscreen)
		{
			CGLSetCurrentContext(glContext);

			glViewport(0, 0, glScreenW, glScreenH);
			glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
			glClear(GL_COLOR_BUFFER_BIT);

			if (glstretch)
			{
				int		sh  = (blit_width < blit_height) ? (blit_height >> 1) : ((blit_width > blit_height * 2) ? (blit_height << 1) : blit_height);
				float	fpw = (float) glScreenH / (float) sh * (float) blit_width;
				int		pw  = (int) (fpw + ((float) glScreenW - fpw) * (float) macAspectRatio / 10000.0);

				glViewport((glScreenW - pw) >> 1, 0, pw, glScreenH);
			}
			else
			{
				int		sw, sh;

				if (nx < 0)
				{
					sw = ntsc_width;
					sh = ((blit_height % SNES_HEIGHT) ? SNES_HEIGHT_EXTENDED : SNES_HEIGHT) * 2;
				}
				else
				{
					sw = SNES_WIDTH * nx;
					sh = ((blit_height % SNES_HEIGHT) ? SNES_HEIGHT_EXTENDED : SNES_HEIGHT) * nx;
				}

				glViewport((glScreenW - sw) >> 1, (glScreenH - sh) >> 1, sw, sh);
			}
		}
		else
		{
			int	ww = (int) gWindowRect.size.width,
				wh = (int) gWindowRect.size.height;

			aglSetCurrentContext(agContext);
			aglUpdateContext(agContext);

			glViewport(0, 0, ww, wh);
			glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
			glClear(GL_COLOR_BUFFER_BIT);

			if (windowExtend)
			{
				int	bh = (blit_height % SNES_HEIGHT) ? (SNES_HEIGHT_EXTENDED << 1) : (SNES_HEIGHT << 1);
				glViewport(0, ((kMacWindowHeight - bh) >> 1) * wh / kMacWindowHeight, ww, bh * wh / kMacWindowHeight);
			}
		}

		if (!ciFilterEnable)
		{
			if (nx < 0)
				textureNum = (blit_height > 256) ? kGLNTS512 : kGLNTS256;
			else
			{
				switch (blit_width / SNES_WIDTH)
				{
					default:
					case 1:
					case 2:	textureNum = kGLBlit2x;	break;
					case 3:	textureNum = kGLBlit3x;	break;
					case 4:	textureNum = kGLBlit4x;	break;
				}
			}

			if (nx < 0)
			{
				int	sh = (blit_height > 256) ?  512 : 256;
				OpenGL.vertex[textureNum][2] = OpenGL.vertex[textureNum][4] = blit_width  / 1024.0f;
				OpenGL.vertex[textureNum][5] = OpenGL.vertex[textureNum][7] = blit_height / (float) sh;
				glPixelStorei(GL_UNPACK_ROW_LENGTH, 1024);
			}
			else
			{
				if (OpenGL.rangeExt)
				{
					OpenGL.vertex[textureNum][2] = OpenGL.vertex[textureNum][4] = blit_width;
					OpenGL.vertex[textureNum][5] = OpenGL.vertex[textureNum][7] = blit_height;
					glPixelStorei(GL_UNPACK_ROW_LENGTH, blit_width);
				}
				else
				{
					int	sl = (blit_width  > 512) ? 1024 : 512;
					int	sh = (blit_height > 512) ? 1024 : 512;
					OpenGL.vertex[textureNum][2] = OpenGL.vertex[textureNum][4] = blit_width  / (float) sl;
					OpenGL.vertex[textureNum][5] = OpenGL.vertex[textureNum][7] = blit_height / (float) sh;
					glPixelStorei(GL_UNPACK_ROW_LENGTH, (blit_width > 512) ? 1024 : ((blit_width > 256) ? 512 : 256));
				}
			}

			glBindTexture(OpenGL.target, OpenGL.textures[textureNum]);
		}
		else
		{
			int	sl = OpenGL.rangeExt ? blit_width : ((blit_width > 512) ? 1024 : ((blit_width > 256) ? 512 : 256));

			glPixelStorei(GL_UNPACK_ROW_LENGTH, sl);
			glMatrixMode(GL_PROJECTION);
			glLoadIdentity();
			glOrtho(0, blit_width, 0, blit_height, -1, 1);

			if (cgBlitImage)
				CGImageRelease(cgBlitImage);
			cgBlitImage = CreateBlitScreenCGImage(blit_width, blit_height, sl << 1, blitGLBuffer);
		}

		prevBlitWidth  = blit_width;
		prevBlitHeight = blit_height;

		windowResizeCount--;
	}

	if (!ciFilterEnable)
	{
		glTexSubImage2D(OpenGL.target, 0, 0, 0, OpenGL.texW[textureNum], OpenGL.texH[textureNum], OpenGL.format, OpenGL.type, blitGLBuffer);

		if (!screencurvature)
		{
			glBegin(GL_QUADS);

			glTexCoord2fv(&OpenGL.vertex[textureNum][6]);
			glVertex2f(-1.0f, -1.0f);
			glTexCoord2fv(&OpenGL.vertex[textureNum][4]);
			glVertex2f( 1.0f, -1.0f);
			glTexCoord2fv(&OpenGL.vertex[textureNum][2]);
			glVertex2f( 1.0f,  1.0f);
			glTexCoord2fv(&OpenGL.vertex[textureNum][0]);
			glVertex2f(-1.0f,  1.0f);

			glEnd();
		}
		else
		{
			GLfloat *t, *s;
			int		tex;

			if (nx < 0)
				tex = (blit_height % SNES_HEIGHT) ? kSCNTExtend : kSCNTNormal;
			else
			if (blit_width > blit_height * 2)
			{
				if (blit_width / SNES_WIDTH != 3)
					tex = (blit_height % SNES_HEIGHT) ? kSC2xEHiRes : kSC2xNHiRes;
				else
					tex = (blit_height % SNES_HEIGHT) ? kSC3xEHiRes : kSC3xNHiRes;
			}
			else
			if (blit_width > blit_height)
			{
				if (blit_width / SNES_WIDTH != 3)
					tex = (blit_height % SNES_HEIGHT) ? kSC2xExtend : kSC2xNormal;
				else
					tex = (blit_height % SNES_HEIGHT) ? kSC3xExtend : kSC3xNormal;
			}
			else
				tex = (blit_height % SNES_HEIGHT) ? kSC2xEInter : kSC2xNInter;

			t = scTexArray[tex];
			s = scScnArray;

			for (int i = 0; i < kSCMeshY; i++)
			{
				glTexCoordPointer(2, GL_FLOAT, 0, t);
				glVertexPointer(3, GL_FLOAT, 0, s);
				glDrawArrays(GL_TRIANGLE_STRIP, 0, (kSCMeshX + 1) * 2);

				t += (kSCMeshX + 1) * 2 * 2;
				s += (kSCMeshX + 1) * 2 * 3;
			}
		}

		glFinishObjectAPPLE(GL_TEXTURE, OpenGL.textures[textureNum]);
	}
	else
	{
		CGRect	src;

		src = CGRectMake(0, 0, blit_width, blit_height);
		DrawWithCoreImageFilter(src, cgBlitImage);
	}

	if (fullscreen)
		CGLFlushDrawable(glContext);
	else
		aglSwapBuffers(agContext);
}

void S9xTextMode (void)
{
	return;
}

void S9xGraphicsMode (void)
{
	return;
}

void S9xSetPalette (void)
{
	return;
}