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8ea80d38a5
Genesis-Plus-GX/source/ngc/ogc_video.c
ekeeke31 8ea80d38a5 rewrote file interface
2008-12-10 18:16:30 +00:00

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/******************************************************************************
*
* Genesis Plus - Sega Megadrive / Genesis Emulator
*
* NGC/Wii Video support
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
***************************************************************************/
#include "shared.h"
#include "font.h"
#include "gcaram.h"
#include "md_ntsc.h"
#include "sms_ntsc.h"
/*** NTSC Filters ***/
md_ntsc_setup_t md_setup;
md_ntsc_t md_ntsc;
sms_ntsc_setup_t sms_setup;
sms_ntsc_t sms_ntsc;
/*** PAL 50hz flag ***/
int gc_pal = 0;
/*** VI ***/
unsigned int *xfb[2]; /*** Double buffered ***/
int whichfb = 0; /*** External framebuffer index ***/
GXRModeObj *vmode; /*** Menu video mode ***/
u8 *texturemem; /*** Texture Data ***/
/*** GX ***/
#define TEX_WIDTH 360 * 2
#define TEX_HEIGHT 576
#define TEX_SIZE TEX_WIDTH * TEX_HEIGHT * 2
#define DEFAULT_FIFO_SIZE 256 * 1024
#define HASPECT 320
#define VASPECT 240
static u8 gp_fifo[DEFAULT_FIFO_SIZE] ATTRIBUTE_ALIGN (32);
static GXTexObj texobj;
static Mtx view;
static u32 vwidth, vheight;
/*** custom Video modes (used to emulate original console video modes) ***/
/* 288 lines progressive (PAL 50Hz) */
GXRModeObj TV50hz_288p =
{
VI_TVMODE_PAL_DS,// viDisplayMode
640, // fbWidth
286, // efbHeight
286, // xfbHeight
(VI_MAX_WIDTH_PAL - 720)/2, // viXOrigin
(VI_MAX_HEIGHT_PAL/2 - 572/2)/2,// viYOrigin
720, // viWidth
572, // viHeight
VI_XFBMODE_SF, // xFBmode
GX_FALSE, // field_rendering
GX_FALSE, // aa
// sample points arranged in increasing Y order
{
{6,6},{6,6},{6,6}, // pix 0, 3 sample points, 1/12 units, 4 bits each
{6,6},{6,6},{6,6}, // pix 1
{6,6},{6,6},{6,6}, // pix 2
{6,6},{6,6},{6,6} // pix 3
},
// vertical filter[7], 1/64 units, 6 bits each
{
0, // line n-1
0, // line n-1
21, // line n
22, // line n
21, // line n
0, // line n+1
0 // line n+1
}
};
/* 288 lines interlaced (PAL 50Hz) */
GXRModeObj TV50hz_288i =
{
VI_TVMODE_PAL_INT,// viDisplayMode
640, // fbWidth
286, // efbHeight
286, // xfbHeight
(VI_MAX_WIDTH_PAL - 720)/2, // viXOrigin
(VI_MAX_HEIGHT_PAL/2 - 572/2)/2,// viYOrigin
720, // viWidth
572, // viHeight
VI_XFBMODE_SF, // xFBmode
GX_TRUE, // field_rendering
GX_FALSE, // aa
// sample points arranged in increasing Y order
{
{6,6},{6,6},{6,6}, // pix 0, 3 sample points, 1/12 units, 4 bits each
{6,6},{6,6},{6,6}, // pix 1
{6,6},{6,6},{6,6}, // pix 2
{6,6},{6,6},{6,6} // pix 3
},
// vertical filter[7], 1/64 units, 6 bits each
{
0, // line n-1
0, // line n-1
21, // line n
22, // line n
21, // line n
0, // line n+1
0 // line n+1
}
};
/* 576 lines interlaced (PAL 50Hz, scaled) */
GXRModeObj TV50hz_576i =
{
VI_TVMODE_PAL_INT,// viDisplayMode
640, // fbWidth
480, // efbHeight
574, // xfbHeight
(VI_MAX_WIDTH_PAL - 720)/2, // viXOrigin
(VI_MAX_HEIGHT_PAL - 574)/2,// viYOrigin
720, // viWidth
574, // viHeight
VI_XFBMODE_DF, // xFBmode
GX_FALSE, // field_rendering
GX_FALSE, // aa
// sample points arranged in increasing Y order
{
{6,6},{6,6},{6,6}, // pix 0, 3 sample points, 1/12 units, 4 bits each
{6,6},{6,6},{6,6}, // pix 1
{6,6},{6,6},{6,6}, // pix 2
{6,6},{6,6},{6,6} // pix 3
},
// vertical filter[7], 1/64 units, 6 bits each
{
8, // line n-1
8, // line n-1
10, // line n
12, // line n
10, // line n
8, // line n+1
8 // line n+1
}
};
/* 240 lines progressive (NTSC or PAL 60Hz) */
GXRModeObj TV60hz_240p =
{
VI_TVMODE_EURGB60_DS,// viDisplayMode
640, // fbWidth
240, // efbHeight
240, // xfbHeight
(VI_MAX_WIDTH_NTSC - 720)/2, // viXOrigin
(VI_MAX_HEIGHT_NTSC/2 - 480/2)/2, // viYOrigin
720, // viWidth
480, // viHeight
VI_XFBMODE_SF, // xFBmode
GX_FALSE, // field_rendering
GX_FALSE, // aa
// sample points arranged in increasing Y order
{
{6,6},{6,6},{6,6}, // pix 0, 3 sample points, 1/12 units, 4 bits each
{6,6},{6,6},{6,6}, // pix 1
{6,6},{6,6},{6,6}, // pix 2
{6,6},{6,6},{6,6} // pix 3
},
// vertical filter[7], 1/64 units, 6 bits each
{
0, // line n-1
0, // line n-1
21, // line n
22, // line n
21, // line n
0, // line n+1
0 // line n+1
}
};
/* 240 lines interlaced (NTSC or PAL 60Hz) */
GXRModeObj TV60hz_240i =
{
VI_TVMODE_EURGB60_INT,// viDisplayMode
640, // fbWidth
240, // efbHeight
240, // xfbHeight
(VI_MAX_WIDTH_NTSC - 720)/2, // viXOrigin
(VI_MAX_HEIGHT_NTSC/2 - 480/2)/2, // viYOrigin
720, // viWidth
480, // viHeight
VI_XFBMODE_SF, // xFBmode
GX_TRUE, // field_rendering
GX_FALSE, // aa
// sample points arranged in increasing Y order
{
{3,2},{9,6},{3,10}, // pix 0, 3 sample points, 1/12 units, 4 bits each
{3,2},{9,6},{3,10}, // pix 1
{9,2},{3,6},{9,10}, // pix 2
{9,2},{3,6},{9,10} // pix 3
},
// vertical filter[7], 1/64 units, 6 bits each
{
0, // line n-1
0, // line n-1
21, // line n
22, // line n
21, // line n
0, // line n+1
0 // line n+1
}
};
/* 480 lines interlaced (NTSC or PAL 60Hz) */
GXRModeObj TV60hz_480i =
{
VI_TVMODE_EURGB60_INT,// viDisplayMode
640, // fbWidth
480, // efbHeight
480, // xfbHeight
(VI_MAX_WIDTH_NTSC - 720)/2, // viXOrigin
(VI_MAX_HEIGHT_NTSC - 480)/2, // viYOrigin
720, // viWidth
480, // viHeight
VI_XFBMODE_DF, // xFBmode
GX_FALSE, // field_rendering
GX_FALSE, // aa
// sample points arranged in increasing Y order
{
{6,6},{6,6},{6,6}, // pix 0, 3 sample points, 1/12 units, 4 bits each
{6,6},{6,6},{6,6}, // pix 1
{6,6},{6,6},{6,6}, // pix 2
{6,6},{6,6},{6,6} // pix 3
},
// vertical filter[7], 1/64 units, 6 bits each
{
8, // line n-1
8, // line n-1
10, // line n
12, // line n
10, // line n
8, // line n+1
8 // line n+1
}
};
/* TV Modes table */
GXRModeObj *tvmodes[6] = {
&TV60hz_240p, &TV60hz_240i, &TV60hz_480i, /* 60hz modes */
&TV50hz_288p, &TV50hz_288i, &TV50hz_576i /* 50Hz modes */
};
typedef struct tagcamera
{
Vector pos;
Vector up;
Vector view;
} camera;
/*** Square Matrix
This structure controls the size of the image on the screen.
Think of the output as a -80 x 80 by -60 x 60 graph.
***/
static s16 square[] ATTRIBUTE_ALIGN (32) =
{
/*
* X, Y, Z
* Values set are for roughly 4:3 aspect
*/
-HASPECT, VASPECT, 0, // 0
HASPECT, VASPECT, 0, // 1
HASPECT, -VASPECT, 0, // 2
-HASPECT, -VASPECT, 0, // 3
};
static camera cam = {
{0.0F, 0.0F, -100.0F},
{0.0F, -1.0F, 0.0F},
{0.0F, 0.0F, 0.0F}
};
/* rendering initialization */
/* should be called each time you change quad aspect ratio */
static void draw_init(void)
{
/* Clear all Vertex params */
GX_ClearVtxDesc ();
/* Set Position Params (quad aspect ratio) */
GX_SetVtxAttrFmt (GX_VTXFMT0, GX_VA_POS, GX_POS_XYZ, GX_S16, 0);
GX_SetVtxDesc (GX_VA_POS, GX_INDEX8);
GX_SetArray (GX_VA_POS, square, 3 * sizeof (s16));
/* Set Tex Coord Params */
GX_SetVtxAttrFmt (GX_VTXFMT0, GX_VA_TEX0, GX_TEX_ST, GX_F32, 0);
GX_SetVtxDesc (GX_VA_TEX0, GX_DIRECT);
GX_SetTevOp (GX_TEVSTAGE0, GX_REPLACE);
GX_SetTevOrder (GX_TEVSTAGE0, GX_TEXCOORD0, GX_TEXMAP0, GX_COLORNULL);
GX_SetNumTexGens (1);
GX_SetNumChans(0);
/* Set Modelview */
memset (&view, 0, sizeof (Mtx));
guLookAt(view, &cam.pos, &cam.up, &cam.view);
GX_LoadPosMtxImm (view, GX_PNMTX0);
}
/* vertex rendering */
static inline void draw_vert(u8 pos, f32 s, f32 t)
{
GX_Position1x8 (pos);
GX_TexCoord2f32 (s, t);
}
/* textured quad rendering */
static inline void draw_square (void)
{
GX_Begin (GX_QUADS, GX_VTXFMT0, 4);
draw_vert (3, 0.0, 0.0);
draw_vert (2, 1.0, 0.0);
draw_vert (1, 1.0, 1.0);
draw_vert (0, 0.0, 1.0);
GX_End ();
}
/* retrace handler */
static void framestart(u32 retraceCnt)
{
/* simply increment the tick counter */
frameticker++;
}
/* Initialize GX */
static void gxStart(void)
{
Mtx p;
GXColor gxbackground = { 0, 0, 0, 0xff };
/*** Clear out FIFO area ***/
memset (&gp_fifo, 0, DEFAULT_FIFO_SIZE);
/*** GX default ***/
GX_Init (&gp_fifo, DEFAULT_FIFO_SIZE);
GX_SetCopyClear (gxbackground, 0x00ffffff);
GX_SetViewport (0.0F, 0.0F, vmode->fbWidth, vmode->efbHeight, 0.0F, 1.0F);
GX_SetScissor (0, 0, vmode->fbWidth, vmode->efbHeight);
f32 yScale = GX_GetYScaleFactor(vmode->efbHeight, vmode->xfbHeight);
u16 xfbHeight = GX_SetDispCopyYScale (yScale);
GX_SetDispCopySrc (0, 0, vmode->fbWidth, vmode->efbHeight);
GX_SetDispCopyDst (vmode->fbWidth, xfbHeight);
GX_SetCopyFilter (vmode->aa, vmode->sample_pattern, GX_TRUE, vmode->vfilter);
GX_SetFieldMode (vmode->field_rendering, ((vmode->viHeight == 2 * vmode->xfbHeight) ? GX_ENABLE : GX_DISABLE));
GX_SetPixelFmt (GX_PF_RGB8_Z24, GX_ZC_LINEAR);
GX_SetCullMode (GX_CULL_NONE);
GX_SetDispCopyGamma (GX_GM_1_0);
GX_SetZMode(GX_FALSE, GX_ALWAYS, GX_TRUE);
GX_SetColorUpdate (GX_TRUE);
guOrtho(p, vmode->efbHeight/2, -(vmode->efbHeight/2), -(vmode->fbWidth/2), vmode->fbWidth/2, 100, 1000);
GX_LoadProjectionMtx (p, GX_ORTHOGRAPHIC);
/*** Reset XFB ***/
GX_CopyDisp (xfb[whichfb ^ 1], GX_TRUE);
/*** Initialize texture data ***/
texturemem = memalign(32, TEX_WIDTH * TEX_HEIGHT * 2);
memset (texturemem, 0, TEX_WIDTH * TEX_HEIGHT * 2);
/*** Initialize renderer */
draw_init();
}
/* Reset GX/VI scaler */
static void gxScale(GXRModeObj *rmode)
{
int temp = 0;
int xscale, yscale, xshift, yshift;
/* Aspect Ratio (depending on current configuration) */
if (config.aspect)
{
/* original aspect ratio */
/* the following values have been detected from comparison with a real 50/60hz Mega Drive */
if (config.overscan)
{
/* borders are emulated */
xscale = 358 + ((reg[12] & 1)*2) - gc_pal;
yscale = vdp_pal + ((gc_pal && !config.render) ? 143 : 120);
}
else
{
/* borders are simulated (black) */
xscale = 325 + ((reg[12] & 1)*2) - gc_pal;
yscale = bitmap.viewport.h / 2;
if (vdp_pal && (!gc_pal || config.render)) yscale = yscale * 240 / 288;
else if (!vdp_pal && gc_pal && !config.render) yscale = yscale * 288 / 240;
}
xshift = config.xshift;
yshift = 2 - vdp_pal + 2*(gc_pal & !config.render) + config.yshift;
}
else
{
/* manual aspect ratio (default is fullscreen) */
if (config.overscan)
{
/* borders are emulated */
xscale = 352;
yscale = (gc_pal && !config.render) ? (vdp_pal ? (268*144 / bitmap.viewport.h):143) : (vdp_pal ? (224*144 / bitmap.viewport.h):120);
}
else
{
/* borders are simulated (black) */
xscale = 320;
yscale = (gc_pal && !config.render) ? 134 : 112;
}
/* user scaling */
xscale += config.xscale;
yscale += config.yscale;
xshift = config.xshift;
yshift = config.yshift;
}
/* Double resolution modes */
if (config.render)
{
yscale *= 2;
yshift *= 2;
}
/* GX Scaler (by default, use EFB maximal width) */
rmode->fbWidth = 640;
if (!config.bilinear && !config.ntsc)
{
/* filtering (soft or hard) is disabled, let VI handles horizontal scaling */
/* if possible, let GX simply doubles the width, otherwise disable GX stretching completely */
int width = vwidth * 4;
if ((width * 2) <= 640) rmode->fbWidth = width * 2;
else if (width <= 640) rmode->fbWidth = width;
}
/* Horizontal Scaling (GX/VI) */
if (xscale > (rmode->fbWidth/2))
{
/* max width = 720 pixels */
if (xscale > 360)
{
/* save offset for later */
temp = xscale - 360;
xscale = 360;
}
/* enable VI scaler */
rmode->viWidth = xscale * 2;
rmode->viXOrigin = (720 - (xscale * 2)) / 2;
/* set GX scaling to max EFB width */
xscale = temp + (rmode->fbWidth/2);
}
else
{
/* disable VI scaler */
rmode->viWidth = rmode->fbWidth;
rmode->viXOrigin = (720 - rmode->fbWidth) / 2;
}
/* update GX scaler (Vertex Position Matrix) */
square[6] = square[3] = xscale + xshift;
square[0] = square[9] = -xscale + xshift;
square[4] = square[1] = yscale + yshift;
square[7] = square[10] = -yscale + yshift;
DCFlushRange (square, 32);
GX_InvVtxCache ();
}
/* Reinitialize Video */
void ogc_video__reset()
{
Mtx p;
GXRModeObj *rmode;
/* 50Hz/60Hz mode */
if ((config.tv_mode == 1) || ((config.tv_mode == 2) && vdp_pal)) gc_pal = 1;
else gc_pal = 0;
/* progressive mode */
if (config.render == 2)
{
/* 480p */
tvmodes[2]->viTVMode = VI_TVMODE_NTSC_PROG;
tvmodes[2]->xfbMode = VI_XFBMODE_SF;
}
else if (config.render == 1)
{
/* 480i */
tvmodes[2]->viTVMode = tvmodes[0]->viTVMode & ~3;
tvmodes[2]->xfbMode = VI_XFBMODE_DF;
}
/* Set current TV mode */
if (config.render) rmode = tvmodes[gc_pal*3 + 2];
else rmode = tvmodes[gc_pal*3 + interlaced];
/* Aspect ratio */
gxScale(rmode);
/* Configure VI */
VIDEO_Configure (rmode);
VIDEO_ClearFrameBuffer(rmode, xfb[whichfb], COLOR_BLACK);
VIDEO_Flush();
VIDEO_WaitVSync();
if (rmode->viTVMode & VI_NON_INTERLACE) VIDEO_WaitVSync();
else while (VIDEO_GetNextField()) VIDEO_WaitVSync();
/* Configure GX */
GX_SetViewport (0.0F, 0.0F, rmode->fbWidth, rmode->efbHeight, 0.0F, 1.0F);
GX_SetScissor (0, 0, rmode->fbWidth, rmode->efbHeight);
f32 yScale = GX_GetYScaleFactor(rmode->efbHeight, rmode->xfbHeight);
u16 xfbHeight = GX_SetDispCopyYScale (yScale);
GX_SetDispCopySrc (0, 0, rmode->fbWidth, rmode->efbHeight);
GX_SetDispCopyDst (rmode->fbWidth, xfbHeight);
GX_SetCopyFilter (rmode->aa, rmode->sample_pattern, config.render ? GX_TRUE : GX_FALSE, rmode->vfilter);
GX_SetFieldMode (rmode->field_rendering, ((rmode->viHeight == 2 * rmode->xfbHeight) ? GX_ENABLE : GX_DISABLE));
GX_SetPixelFmt (rmode->aa ? GX_PF_RGB565_Z16 : GX_PF_RGB8_Z24, GX_ZC_LINEAR);
guOrtho(p, rmode->efbHeight/2, -(rmode->efbHeight/2), -(rmode->fbWidth/2), rmode->fbWidth/2, 100, 1000);
GX_LoadProjectionMtx (p, GX_ORTHOGRAPHIC);
/* Software NTSC filter */
if (config.ntsc == 1)
{
sms_setup = sms_ntsc_composite;
md_setup = md_ntsc_composite;
sms_ntsc_init( &sms_ntsc, &sms_setup );
md_ntsc_init( &md_ntsc, &md_setup );
}
else if (config.ntsc == 2)
{
sms_setup = sms_ntsc_svideo;
md_setup = md_ntsc_svideo;
sms_ntsc_init( &sms_ntsc, &sms_setup );
md_ntsc_init( &md_ntsc, &md_setup );
}
else if (config.ntsc == 3)
{
sms_setup = sms_ntsc_rgb;
md_setup = md_ntsc_rgb;
sms_ntsc_init( &sms_ntsc, &sms_setup );
md_ntsc_init( &md_ntsc, &md_setup );
}
}
/* GX render update */
void ogc_video__update()
{
/* check if viewport has changed */
if (bitmap.viewport.changed)
{
bitmap.viewport.changed = 0;
/* update texture size */
vwidth = bitmap.viewport.w + 2 * bitmap.viewport.x;
vheight = bitmap.viewport.h + 2 * bitmap.viewport.y;
/* special cases */
if (config.render && interlaced) vheight *= 2;
if (config.ntsc) vwidth = (reg[12]&1) ? MD_NTSC_OUT_WIDTH(vwidth) : SMS_NTSC_OUT_WIDTH(vwidth);
/* texels size must be multiple of 4 */
vwidth = vwidth / 4;
vheight = vheight / 4;
/* image size has changed, reset GX */
ogc_video__reset();
/* reinitialize texture */
GX_InitTexObj (&texobj, texturemem, vwidth * 4, vheight * 4, GX_TF_RGB565, GX_CLAMP, GX_CLAMP, GX_FALSE);
/* enable/disable bilinear filtering */
if (!config.bilinear)
{
GX_InitTexObjLOD(&texobj,GX_NEAR,GX_NEAR_MIP_NEAR,2.5,9.0,0.0,GX_FALSE,GX_FALSE,GX_ANISO_1);
}
/* load texture */
GX_LoadTexObj (&texobj, GX_TEXMAP0);
}
/* texture is now directly mapped by the line renderer */
/* update texture cache */
DCFlushRange (texturemem, TEX_SIZE);
GX_InvalidateTexAll ();
/* render textured quad */
draw_square ();
GX_DrawDone ();
/* switch external framebuffers then copy EFB to XFB */
whichfb ^= 1;
GX_CopyDisp (xfb[whichfb], GX_TRUE);
GX_Flush ();
/* set next XFB */
VIDEO_SetNextFramebuffer (xfb[whichfb]);
VIDEO_Flush ();
}
/* Initialize VIDEO subsystem */
void ogc_video__init(void)
{
/*
* Before doing anything else under libogc,
* Call VIDEO_Init
*/
VIDEO_Init ();
/*
* Before any memory is allocated etc.
* Rescue any tagged ROM in data 2
*/
int *romptr = (int *)0x80700000;
StartARAM();
genromsize = 0;
if ( memcmp((char *)romptr,"GENPLUSR",8) == 0 )
{
genromsize = romptr[2];
ARAMPut ((char *) 0x80700000 + 0x20, (char *) 0x8000, genromsize);
}
/* Get the current video mode then :
- set menu video mode (480p, 480i or 576i)
- set emulator rendering TV modes (PAL/MPAL/NTSC/EURGB60)
*/
vmode = VIDEO_GetPreferredMode(NULL);
/* Adjust display settings */
switch (vmode->viTVMode >> 2)
{
case VI_PAL: /* 576 lines (PAL 50Hz) */
TV60hz_240p.viTVMode = VI_TVMODE_EURGB60_DS;
TV60hz_240i.viTVMode = VI_TVMODE_EURGB60_INT;
TV60hz_480i.viTVMode = VI_TVMODE_EURGB60_INT;
config.tv_mode = 1;
/* display should be centered vertically (borders) */
vmode = &TVPal574IntDfScale;
vmode->xfbHeight = 480;
vmode->viYOrigin = (VI_MAX_HEIGHT_PAL - 480)/2;
vmode->viHeight = 480;
break;
case VI_NTSC: /* 480 lines (NTSC 60hz) */
TV60hz_240p.viTVMode = VI_TVMODE_NTSC_DS;
TV60hz_240i.viTVMode = VI_TVMODE_NTSC_INT;
TV60hz_480i.viTVMode = VI_TVMODE_NTSC_INT;
config.tv_mode = 0;
#ifndef HW_RVL
/* force 480p on NTSC GameCube if the Component Cable is present */
if (VIDEO_HaveComponentCable()) vmode = &TVNtsc480Prog;
#endif
break;
default: /* 480 lines (PAL 60Hz) */
TV60hz_240p.viTVMode = VI_TVMODE(vmode->viTVMode >> 2, VI_NON_INTERLACE);
TV60hz_240i.viTVMode = VI_TVMODE(vmode->viTVMode >> 2, VI_INTERLACE);
TV60hz_480i.viTVMode = VI_TVMODE(vmode->viTVMode >> 2, VI_INTERLACE);
config.tv_mode = 2;
break;
}
/* Configure video mode */
VIDEO_Configure (vmode);
/* Configure the framebuffers (double-buffering) */
xfb[0] = (u32 *) MEM_K0_TO_K1((u32 *) SYS_AllocateFramebuffer(&TV50hz_576i));
xfb[1] = (u32 *) MEM_K0_TO_K1((u32 *) SYS_AllocateFramebuffer(&TV50hz_576i));
/* Define a console */
console_init(xfb[0], 20, 64, 640, 574, 574 * 2);
/* Clear framebuffers to black */
VIDEO_ClearFrameBuffer (vmode, xfb[0], COLOR_BLACK);
VIDEO_ClearFrameBuffer (vmode, xfb[1], COLOR_BLACK);
/* Set the framebuffer to be displayed at next VBlank */
VIDEO_SetNextFramebuffer (xfb[0]);
/* Register Video Retrace handlers */
VIDEO_SetPreRetraceCallback(framestart);
/* Enable Video Interface */
VIDEO_SetBlack (FALSE);
/* Update video settings for next VBlank */
VIDEO_Flush ();
/* Wait for VBlank */
VIDEO_WaitVSync();
VIDEO_WaitVSync();
/* Initialize GUI */
unpackBackdrop ();
init_font();
/* Initialize GX */
gxStart();
}
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