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Genesis-Plus-GX/source/gx/gx_video.c
ekeeke31 0d58ff65e0 fixed sound issues in PAL mode when HQ YM2612 is enabled (modified FIR resampler ratio) 
fixed video glitches in games that switch video horizontal width.
fixed BIOS infinite loop on hard reset
2009-08-14 13:54:15 +00:00

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/****************************************************************************
* gx_video.c
*
* Genesis Plus GX video & rendering support
*
* Softdev (2006)
* Eke-Eke (2007,2008,2009)
*
* 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 "sms_ntsc.h"
#include "aram.h"
#include "md_ntsc.h"
#include "sms_ntsc.h"
#include <png.h>
#define TEX_WIDTH 720
#define TEX_HEIGHT 576
#define TEX_SIZE (TEX_WIDTH * TEX_HEIGHT * 2)
#define DEFAULT_FIFO_SIZE 256 * 1024
#define HASPECT 320
#define VASPECT 240
/* libpng wrapper */
typedef struct
{
u8 *buffer;
u32 offset;
} png_image;
extern const u8 Crosshair_p1_png[];
extern const u8 Crosshair_p2_png[];
/*** VI ***/
unsigned int *xfb[2]; /* External Framebuffers */
int whichfb = 0; /* Current Framebuffer */
GXRModeObj *vmode; /* Default Video Mode */
u8 *texturemem; /* Texture Data */
u8 *screenshot; /* Texture Data */
/* 50/60hz flag */
u8 gc_pal = 0;
/*** NTSC Filters ***/
sms_ntsc_t sms_ntsc;
md_ntsc_t md_ntsc;
static sms_ntsc_setup_t sms_setup;
static md_ntsc_setup_t md_setup;
/*** GX FIFO ***/
static u8 gp_fifo[DEFAULT_FIFO_SIZE] ATTRIBUTE_ALIGN (32);
/*** GX Textures ***/
static u32 vwidth,vheight;
static gx_texture *crosshair[2];
/***************************************************************************************/
/* Emulation video modes */
/***************************************************************************************/
static GXRModeObj *rmode;
/* 288 lines progressive (PAL 50Hz) */
static GXRModeObj TV50hz_288p =
{
VI_TVMODE_PAL_DS, // viDisplayMode
640, // fbWidth
286, // efbHeight
286, // xfbHeight
0, // viXOrigin
(VI_MAX_HEIGHT_PAL - 572)/2, // viYOrigin
VI_MAX_WIDTH_PAL, // 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) */
static GXRModeObj TV50hz_288i =
{
VI_TVMODE_PAL_INT, // viDisplayMode
640, // fbWidth
286, // efbHeight
286, // xfbHeight
0, // viXOrigin
(VI_MAX_HEIGHT_PAL - 572)/2, // viYOrigin
VI_MAX_WIDTH_PAL, // 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) */
static GXRModeObj TV50hz_576i =
{
VI_TVMODE_PAL_INT, // viDisplayMode
640, // fbWidth
480, // efbHeight
VI_MAX_HEIGHT_PAL, // xfbHeight
0, // viXOrigin
0, // viYOrigin
VI_MAX_WIDTH_PAL, // viWidth
VI_MAX_HEIGHT_PAL, // 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) */
static GXRModeObj TV60hz_240p =
{
VI_TVMODE_EURGB60_DS, // viDisplayMode
640, // fbWidth
VI_MAX_HEIGHT_NTSC/2, // efbHeight
VI_MAX_HEIGHT_NTSC/2, // xfbHeight
0, // viXOrigin
0, // viYOrigin
VI_MAX_WIDTH_NTSC, // viWidth
VI_MAX_HEIGHT_NTSC, // 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) */
static GXRModeObj TV60hz_240i =
{
VI_TVMODE_EURGB60_INT, // viDisplayMode
640, // fbWidth
VI_MAX_HEIGHT_NTSC/2, // efbHeight
VI_MAX_HEIGHT_NTSC/2, // xfbHeight
0, // viXOrigin
0, // viYOrigin
VI_MAX_WIDTH_NTSC, // viWidth
VI_MAX_HEIGHT_NTSC, // 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) */
static GXRModeObj TV60hz_480i =
{
VI_TVMODE_EURGB60_INT,// viDisplayMode
640, // fbWidth
VI_MAX_HEIGHT_NTSC, // efbHeight
VI_MAX_HEIGHT_NTSC, // xfbHeight
0, // viXOrigin
0, // viYOrigin
VI_MAX_WIDTH_NTSC, // viWidth
VI_MAX_HEIGHT_NTSC, // 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 pointer table */
static GXRModeObj *tvmodes[6] =
{
/* 60hz modes */
&TV60hz_240p,
&TV60hz_240i,
&TV60hz_480i,
/* 50Hz modes */
&TV50hz_288p,
&TV50hz_288i,
&TV50hz_576i
};
/***************************************************************************************/
/* GX rendering engine */
/***************************************************************************************/
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}
};
/* VSYNC callback */
static void vi_callback(u32 cnt)
{
frameticker++;
}
/* 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 ();
}
/* Initialize GX */
static void gxStart(void)
{
/*** Clear out FIFO area ***/
memset(&gp_fifo, 0, DEFAULT_FIFO_SIZE);
/*** GX default ***/
GX_Init(&gp_fifo, DEFAULT_FIFO_SIZE);
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_FALSE);
GX_SetColorUpdate(GX_TRUE);
GX_SetAlphaUpdate(GX_FALSE);
/* Modelview */
Mtx view;
memset (&view, 0, sizeof (Mtx));
guLookAt(view, &cam.pos, &cam.up, &cam.view);
GX_LoadPosMtxImm(view, GX_PNMTX0);
GX_Flush();
}
/* Reset GX rendering */
static void gxResetRendering(u8 type)
{
GX_ClearVtxDesc();
if (type)
{
/* uses direct positionning, alpha blending & color channel (menu rendering) */
GX_SetBlendMode(GX_BM_BLEND,GX_BL_SRCALPHA,GX_BL_INVSRCALPHA,GX_LO_CLEAR);
GX_SetVtxAttrFmt(GX_VTXFMT0, GX_VA_POS, GX_POS_XY, GX_S16, 0);
GX_SetVtxAttrFmt(GX_VTXFMT0, GX_VA_CLR0, GX_CLR_RGBA, GX_RGBA8, 0);
GX_SetVtxAttrFmt(GX_VTXFMT0, GX_VA_TEX0, GX_TEX_ST, GX_F32, 0);
GX_SetVtxDesc(GX_VA_POS, GX_DIRECT);
GX_SetVtxDesc(GX_VA_TEX0, GX_DIRECT);
GX_SetVtxDesc (GX_VA_CLR0, GX_DIRECT);
/*
Color.out = Color.rasterized*Color.texture
Alpha.out = Alpha.rasterized*Alpha.texture
*/
GX_SetTevOp (GX_TEVSTAGE0, GX_MODULATE);
GX_SetTevOrder(GX_TEVSTAGE0, GX_TEXCOORD0, GX_TEXMAP0, GX_COLOR0A0);
GX_SetNumTexGens(1);
GX_SetNumChans(1);
}
else
{
/* uses array positionning, no alpha blending, no color channel (video emulation) */
GX_SetBlendMode(GX_BM_NONE,GX_BL_SRCALPHA,GX_BL_INVSRCALPHA,GX_LO_CLEAR);
GX_SetVtxAttrFmt(GX_VTXFMT0, GX_VA_POS, GX_POS_XYZ, GX_S16, 0);
GX_SetVtxAttrFmt(GX_VTXFMT0, GX_VA_TEX0, GX_TEX_ST, GX_F32, 0);
GX_SetVtxDesc(GX_VA_POS, GX_INDEX8);
GX_SetVtxDesc(GX_VA_TEX0, GX_DIRECT);
GX_SetArray(GX_VA_POS, square, 3 * sizeof (s16));
/*
Color.out = Color.texture
Alpha.out = Alpha.texture
*/
GX_SetTevOp (GX_TEVSTAGE0, GX_REPLACE);
GX_SetTevOrder(GX_TEVSTAGE0, GX_TEXCOORD0, GX_TEXMAP0, GX_COLORNULL);
GX_SetNumTexGens(1);
GX_SetNumChans(0);
}
GX_Flush();
}
/* Reset GX 2D rendering */
static void gxResetView(GXRModeObj *tvmode)
{
Mtx44 p;
f32 yScale = GX_GetYScaleFactor(tvmode->efbHeight, tvmode->xfbHeight);
u16 xfbHeight = GX_SetDispCopyYScale(yScale);
GX_SetCopyClear((GXColor)BLACK,0x00ffffff);
GX_SetViewport(0.0F, 0.0F, tvmode->fbWidth, tvmode->efbHeight, 0.0F, 1.0F);
GX_SetScissor(0, 0, tvmode->fbWidth, tvmode->efbHeight);
GX_SetDispCopySrc(0, 0, tvmode->fbWidth, tvmode->efbHeight);
GX_SetDispCopyDst(tvmode->fbWidth, xfbHeight);
GX_SetCopyFilter(tvmode->aa, tvmode->sample_pattern, (tvmode->xfbMode == VI_XFBMODE_SF) ? GX_FALSE : GX_TRUE, tvmode->vfilter);
GX_SetFieldMode(tvmode->field_rendering, ((tvmode->viHeight == 2 * tvmode->xfbHeight) ? GX_ENABLE : GX_DISABLE));
guOrtho(p, tvmode->efbHeight/2, -(tvmode->efbHeight/2), -(tvmode->fbWidth/2), tvmode->fbWidth/2, 100, 1000);
GX_LoadProjectionMtx(p, GX_ORTHOGRAPHIC);
GX_Flush();
}
/* Reset GX/VI scaler */
static void gxResetScale(u32 width, u32 height)
{
int temp = 0;
int xscale, yscale, xshift, yshift;
/* Aspect Ratio (depends on current configuration) */
if (config.aspect)
{
/* original aspect ratio */
/* the following values have been deducted 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;
}
/* 16/9 correction */
if (config.aspect & 2) xscale = (xscale * 3) / 4;
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 */
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();
}
static void gxDrawCrosshair(gx_texture *texture, int x, int y)
{
if (texture->data)
{
/* load texture object */
GXTexObj texObj;
GX_InitTexObj(&texObj, texture->data, texture->width, texture->height, GX_TF_RGBA8, GX_CLAMP, GX_CLAMP, GX_FALSE);
GX_InitTexObjLOD(&texObj,GX_LINEAR,GX_LIN_MIP_LIN,0.0,10.0,0.0,GX_FALSE,GX_TRUE,GX_ANISO_4);
GX_LoadTexObj(&texObj, GX_TEXMAP0);
GX_InvalidateTexAll();
/* reset GX rendering */
gxResetRendering(1);
/* adjust coordinates */
int w = (texture->width * rmode->fbWidth) / (rmode->viWidth);
int h = (texture->height * rmode->efbHeight) / (rmode->viHeight);
x = ((x * rmode->fbWidth) / bitmap.viewport.w) - w/2 - (rmode->fbWidth/2);
y = ((y * rmode->efbHeight) / bitmap.viewport.h) - h/2 - (rmode->efbHeight/2);
/* Draw textured quad */
GX_Begin(GX_QUADS, GX_VTXFMT0, 4);
GX_Position2s16(x,y+h);
GX_Color4u8(0xff,0xff,0xff,0xff);
GX_TexCoord2f32(0.0, 1.0);
GX_Position2s16(x+w,y+h);
GX_Color4u8(0xff,0xff,0xff,0xff);
GX_TexCoord2f32(1.0, 1.0);
GX_Position2s16(x+w,y);
GX_Color4u8(0xff,0xff,0xff,0xff);
GX_TexCoord2f32(1.0, 0.0);
GX_Position2s16(x,y);
GX_Color4u8(0xff,0xff,0xff,0xff);
GX_TexCoord2f32(0.0, 0.0);
GX_End ();
GX_DrawDone();
/* restore GX rendering */
gxResetRendering(0);
/* restore texture object */
GXTexObj texobj;
GX_InitTexObj(&texobj, texturemem, vwidth, vheight, GX_TF_RGB565, GX_CLAMP, GX_CLAMP, GX_FALSE);
if (!config.bilinear) GX_InitTexObjLOD(&texobj,GX_NEAR,GX_NEAR_MIP_NEAR,0.0,10.0,0.0,GX_FALSE,GX_FALSE,GX_ANISO_1);
GX_LoadTexObj(&texobj, GX_TEXMAP0);
GX_InvalidateTexAll();
}
}
void gxDrawRectangle(s32 x, s32 y, s32 w, s32 h, u8 alpha, GXColor color)
{
/* GX only use Color channel for rendering */
GX_SetTevOp (GX_TEVSTAGE0, GX_PASSCLR);
GX_SetVtxDesc (GX_VA_TEX0, GX_NONE);
GX_Flush();
/* vertex coordinate */
x -= (vmode->fbWidth/2);
y -= (vmode->efbHeight/2);
/* draw colored quad */
GX_Begin(GX_QUADS, GX_VTXFMT0, 4);
GX_Position2s16(x,y+h);
GX_Color4u8(color.r,color.g,color.b,alpha);
GX_Position2s16(x+w,y+h);
GX_Color4u8(color.r,color.g,color.b,alpha);
GX_Position2s16(x+w,y);
GX_Color4u8(color.r,color.g,color.b,alpha);
GX_Position2s16(x,y);
GX_Color4u8(color.r,color.g,color.b,alpha);
GX_End ();
GX_DrawDone();
/* restore GX rendering */
GX_SetVtxDesc(GX_VA_TEX0, GX_DIRECT);
GX_SetTevOp (GX_TEVSTAGE0, GX_MODULATE);
GX_Flush();
}
void gxDrawTexture(gx_texture *texture, s32 x, s32 y, s32 w, s32 h, u8 alpha)
{
if (!texture) return;
if (texture->data)
{
/* load texture object */
GXTexObj texObj;
GX_InitTexObj(&texObj, texture->data, texture->width, texture->height, GX_TF_RGBA8, GX_CLAMP, GX_CLAMP, GX_FALSE);
GX_InitTexObjLOD(&texObj,GX_LINEAR,GX_LIN_MIP_LIN,0.0,10.0,0.0,GX_FALSE,GX_TRUE,GX_ANISO_4); /* does this really change anything ? */
GX_LoadTexObj(&texObj, GX_TEXMAP0);
GX_InvalidateTexAll();
/* vertex coordinate */
x -= (vmode->fbWidth/2);
y -= (vmode->efbHeight/2);
/* draw textured quad */
GX_Begin(GX_QUADS, GX_VTXFMT0, 4);
GX_Position2s16(x,y+h);
GX_Color4u8(0xff,0xff,0xff,alpha);
GX_TexCoord2f32(0.0, 1.0);
GX_Position2s16(x+w,y+h);
GX_Color4u8(0xff,0xff,0xff,alpha);
GX_TexCoord2f32(1.0, 1.0);
GX_Position2s16(x+w,y);
GX_Color4u8(0xff,0xff,0xff,alpha);
GX_TexCoord2f32(1.0, 0.0);
GX_Position2s16(x,y);
GX_Color4u8(0xff,0xff,0xff,alpha);
GX_TexCoord2f32(0.0, 0.0);
GX_End ();
GX_DrawDone();
}
}
void gxDrawTextureRotate(gx_texture *texture, s32 x, s32 y, s32 w, s32 h, f32 angle, u8 alpha)
{
if (!texture) return;
if (texture->data)
{
/* load texture object */
GXTexObj texObj;
GX_InitTexObj(&texObj, texture->data, texture->width, texture->height, GX_TF_RGBA8, GX_CLAMP, GX_CLAMP, GX_FALSE);
GX_InitTexObjLOD(&texObj,GX_LINEAR,GX_LIN_MIP_LIN,0.0,10.0,0.0,GX_FALSE,GX_TRUE,GX_ANISO_4);
GX_LoadTexObj(&texObj, GX_TEXMAP0);
GX_InvalidateTexAll();
/* vertex coordinate */
x -= (vmode->fbWidth/2);
y -= (vmode->efbHeight/2);
/* Modelview rotation */
Mtx m,mv;
Vector axis = (Vector) {0,0,1};
guLookAt(mv, &cam.pos, &cam.up, &cam.view);
guMtxRotAxisDeg (m, &axis, angle);
guMtxTransApply(m,m, x+w/2,y+h/2,0);
guMtxConcat(mv,m,mv);
GX_LoadPosMtxImm(mv, GX_PNMTX0);
GX_Flush();
/* draw textured quad */
GX_Begin(GX_QUADS, GX_VTXFMT0, 4);
GX_Position2s16(-w/2,-h/2);
GX_Color4u8(0xff,0xff,0xff,alpha);
GX_TexCoord2f32(0.0, 0.0);
GX_Position2s16(w/2,-h/2);
GX_Color4u8(0xff,0xff,0xff,alpha);
GX_TexCoord2f32(1.0, 0.0);
GX_Position2s16(w/2,h/2);
GX_Color4u8(0xff,0xff,0xff,alpha);
GX_TexCoord2f32(1.0, 1.0);
GX_Position2s16(-w/2,h/2);
GX_Color4u8(0xff,0xff,0xff,alpha);
GX_TexCoord2f32(0.0, 1.0);
GX_End ();
GX_DrawDone();
/* restore default Modelview */
guLookAt(mv, &cam.pos, &cam.up, &cam.view);
GX_LoadPosMtxImm(mv, GX_PNMTX0);
GX_Flush();
}
}
void gxDrawTextureRepeat(gx_texture *texture, s32 x, s32 y, s32 w, s32 h, u8 alpha)
{
if (!texture) return;
if (texture->data)
{
/* load texture object */
GXTexObj texObj;
GX_InitTexObj(&texObj, texture->data, texture->width, texture->height, GX_TF_RGBA8, GX_MIRROR, GX_MIRROR, GX_FALSE);
GX_LoadTexObj(&texObj, GX_TEXMAP0);
GX_InvalidateTexAll();
/* vertex coordinate */
x -= (vmode->fbWidth/2);
y -= (vmode->efbHeight/2);
/* texture coordinates */
f32 s = (f32)w / (f32)texture->width;
f32 t = (f32)h / (f32)texture->height;
/* draw textured quad */
GX_Begin(GX_QUADS, GX_VTXFMT0, 4);
GX_Position2s16(x,y+h);
GX_Color4u8(0xff,0xff,0xff,alpha);
GX_TexCoord2f32(0.0, t);
GX_Position2s16(x+w,y+h);
GX_Color4u8(0xff,0xff,0xff,alpha);
GX_TexCoord2f32(s, t);
GX_Position2s16(x+w,y);
GX_Color4u8(0xff,0xff,0xff,alpha);
GX_TexCoord2f32(s, 0.0);
GX_Position2s16(x,y);
GX_Color4u8(0xff,0xff,0xff,alpha);
GX_TexCoord2f32(0.0, 0.0);
GX_End ();
GX_DrawDone();
}
}
void gxDrawScreenshot(u8 alpha)
{
if (!rmode) return;
/* retrieve gamescreen texture */
GXTexObj texobj;
GX_InitTexObj(&texobj, texturemem, vwidth, vheight, GX_TF_RGB565, GX_CLAMP, GX_CLAMP, GX_FALSE);
GX_LoadTexObj(&texobj, GX_TEXMAP0);
GX_InvalidateTexAll();
/* retrieve current xscale/xshift values */
s32 xscale = (rmode->viWidth + square[6] - square[0] - rmode->fbWidth) / 2 - (vmode->viWidth - 640)/2;
s32 xshift = (square[6] + square[0]) / 2;
/* apply current position/size */
s32 x = xshift - xscale;
s32 y = square[7];
s32 w = xscale * 2;
s32 h = square[4] - square[7];
if (rmode->efbHeight < 480)
{
y = y * 2;
h = h * 2;
}
/* draw textured quad */
GX_Begin(GX_QUADS, GX_VTXFMT0, 4);
GX_Position2s16(x,y+h);
GX_Color4u8(0xff,0xff,0xff,alpha);
GX_TexCoord2f32(0.0, 1.0);
GX_Position2s16(x+w,y+h);
GX_Color4u8(0xff,0xff,0xff,alpha);
GX_TexCoord2f32(1.0, 1.0);
GX_Position2s16(x+w,y);
GX_Color4u8(0xff,0xff,0xff,alpha);
GX_TexCoord2f32(1.0, 0.0);
GX_Position2s16(x,y);
GX_Color4u8(0xff,0xff,0xff,alpha);
GX_TexCoord2f32(0.0, 0.0);
GX_End ();
GX_DrawDone();
}
void gxCopyScreenshot(gx_texture *texture)
{
/* retrieve gamescreen texture */
gxClearScreen((GXColor)BLACK);
GXTexObj texobj;
GX_InitTexObj(&texobj, texturemem, vwidth, vheight, GX_TF_RGB565, GX_CLAMP, GX_CLAMP, GX_FALSE);
GX_LoadTexObj(&texobj, GX_TEXMAP0);
GX_InvalidateTexAll();
/* scale texture to EFB width */
s32 w = bitmap.viewport.x ? (704) : (640);
s32 h = (bitmap.viewport.h + 2*bitmap.viewport.y) * 2;
s32 x = -w/2;
s32 y = -(240+ 2*bitmap.viewport.y);
/* draw textured quad */
GX_Begin(GX_QUADS, GX_VTXFMT0, 4);
GX_Position2s16(x,y+h);
GX_Color4u8(0xff,0xff,0xff,0xff);
GX_TexCoord2f32(0.0, 1.0);
GX_Position2s16(x+w,y+h);
GX_Color4u8(0xff,0xff,0xff,0xff);
GX_TexCoord2f32(1.0, 1.0);
GX_Position2s16(x+w,y);
GX_Color4u8(0xff,0xff,0xff,0xff);
GX_TexCoord2f32(1.0, 0.0);
GX_Position2s16(x,y);
GX_Color4u8(0xff,0xff,0xff,0xff);
GX_TexCoord2f32(0.0, 0.0);
GX_End ();
GX_DrawDone();
/* copy EFB to texture */
texture->format = GX_TF_RGBA8;
texture->width = 320;
texture->height = bitmap.viewport.h;
texture->data = screenshot;
GX_SetTexCopySrc(0, 0, texture->width * 2, texture->height * 2);
GX_SetTexCopyDst(texture->width, texture->height, texture->format, GX_TRUE);
GX_CopyTex(texture->data, GX_TRUE);
GX_Flush();
/* wait for copy operation to finish */
/* GX_PixModeSync is only useful if GX_ command follows */
/* we use dummy GX commands to stall CPU execution */
GX_PixModeSync();
GX_LoadTexObj(&texobj, GX_TEXMAP0);
GX_InvalidateTexAll();
DCFlushRange(texture->data, texture->width * texture->height * 4);
}
void gxSetScreen(void)
{
GX_CopyDisp(xfb[whichfb], GX_FALSE);
GX_Flush();
VIDEO_SetNextFramebuffer (xfb[whichfb]);
VIDEO_Flush ();
VIDEO_WaitVSync ();
}
void gxClearScreen(GXColor color)
{
whichfb ^= 1;
GX_SetCopyClear(color,0x00ffffff);
GX_CopyDisp(xfb[whichfb], GX_TRUE);
GX_Flush();
}
/***************************************************************************************/
/* GX Texture <-> LibPNG routines */
/***************************************************************************************/
/* libpng read callback function */
static void png_read_from_mem (png_structp png_ptr, png_bytep data, png_size_t length)
{
png_image *image = (png_image *)png_get_io_ptr(png_ptr);
/* copy data from image buffer */
memcpy (data, image->buffer + image->offset, length);
/* advance in the file */
image->offset += length;
}
/* convert PNG image (from file or data buffer) into RGBA8 texture */
gx_texture *gxTextureOpenPNG(const u8 *png_data, FILE *png_file)
{
int i;
/* create a png read struct */
png_structp png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING,NULL,NULL,NULL);
if (!png_ptr) return NULL;
/* create a png info struct */
png_infop info_ptr = png_create_info_struct(png_ptr);
if (!info_ptr)
{
png_destroy_read_struct(&png_ptr,NULL,NULL);
return NULL;
}
if (png_data)
{
/* init PNG image structure */
png_image image;
image.buffer = (u8 *) png_data;
image.offset = 0;
/* set callback for the read function */
png_set_read_fn(png_ptr,(png_voidp *)(&image),png_read_from_mem);
}
else if (png_file)
{
/* check for valid magic number */
png_byte magic[8];
if (fread (magic, 1, 8, png_file) != 8)
{
png_destroy_read_struct(&png_ptr,&info_ptr,NULL);
return NULL;
}
if (!png_check_sig (magic, 8))
if (fread (magic, 1, 8, png_file) != 8)
{
png_destroy_read_struct(&png_ptr,&info_ptr,NULL);
return NULL;
}
/* set IO callback for read function */
png_init_io (png_ptr, png_file);
png_set_sig_bytes (png_ptr, 8);
}
else
{
png_destroy_read_struct(&png_ptr,&info_ptr,NULL);
return NULL;
}
/* read png info */
png_read_info(png_ptr,info_ptr);
/* retrieve image information */
u32 width = png_get_image_width(png_ptr,info_ptr);
u32 height = png_get_image_height(png_ptr,info_ptr);
u32 bit_depth = png_get_bit_depth(png_ptr,info_ptr);
u32 color_type = png_get_color_type(png_ptr,info_ptr);
/* ensure PNG file is in the supported format */
if (png_file)
{
/* support for RGBA8 textures ONLY !*/
if ((color_type != PNG_COLOR_TYPE_RGB_ALPHA) || (bit_depth != 8))
{
png_destroy_read_struct(&png_ptr, &info_ptr,NULL);
return NULL;
}
/* 4x4 tiles are required */
if ((width%4) || (height%4))
{
png_destroy_read_struct(&png_ptr, &info_ptr, NULL);
return NULL;
}
}
/* allocate memory to store raw image data */
u32 stride = width << 2;
u8 *img_data = memalign (32, stride * height);
if (!img_data)
{
png_destroy_read_struct(&png_ptr,&info_ptr,NULL);
return NULL;
}
/* allocate row pointer data */
png_bytep *row_pointers = (png_bytep *)memalign (32, sizeof (png_bytep) * height);
if (!row_pointers)
{
free (img_data);
png_destroy_read_struct(&png_ptr,&info_ptr,NULL);
return NULL;
}
/* store raw image data */
for (i = 0; i < height; i++)
{
row_pointers[i] = img_data + (i * stride);
}
/* decode image */
png_read_image(png_ptr, row_pointers);
/* finish decompression and release memory */
png_read_end(png_ptr, NULL);
png_destroy_read_struct(&png_ptr, &info_ptr, NULL);
free(row_pointers);
/* initialize texture */
gx_texture *texture = (gx_texture *)memalign(32, sizeof(gx_texture));
if (!texture)
{
free (img_data);
return NULL;
}
/* initialize texture data */
texture->data = memalign(32, stride * height);
if (!texture->data)
{
free (img_data);
free(texture);
return NULL;
}
memset(texture->data, 0, stride * height);
texture->width = width;
texture->height = height;
texture->format = GX_TF_RGBA8;
/* encode to GX_TF_RGBA8 format (4x4 pixels paired titles) */
u16 *dst_ar = (u16 *)(texture->data);
u16 *dst_gb = (u16 *)(texture->data + 32);
u32 *src1 = (u32 *)(img_data);
u32 *src2 = (u32 *)(img_data + stride);
u32 *src3 = (u32 *)(img_data + 2*stride);
u32 *src4 = (u32 *)(img_data + 3*stride);
u32 pixel,h,w;
for (h=0; h<height; h+=4)
{
for (w=0; w<width; w+=4)
{
/* line N (4 pixels) */
for (i=0; i<4; i++)
{
pixel = *src1++;
*dst_ar++= ((pixel << 8) & 0xff00) | ((pixel >> 24) & 0x00ff);
*dst_gb++= (pixel >> 8) & 0xffff;
}
/* line N + 1 (4 pixels) */
for (i=0; i<4; i++)
{
pixel = *src2++;
*dst_ar++= ((pixel << 8) & 0xff00) | ((pixel >> 24) & 0x00ff);
*dst_gb++= (pixel >> 8) & 0xffff;
}
/* line N + 2 (4 pixels) */
for (i=0; i<4; i++)
{
pixel = *src3++;
*dst_ar++= ((pixel << 8) & 0xff00) | ((pixel >> 24) & 0x00ff);
*dst_gb++= (pixel >> 8) & 0xffff;
}
/* line N + 3 (4 pixels) */
for (i=0; i<4; i++)
{
pixel = *src4++;
*dst_ar++= ((pixel << 8) & 0xff00) | ((pixel >> 24) & 0x00ff);
*dst_gb++= (pixel >> 8) & 0xffff;
}
/* next paired tiles */
dst_ar += 16;
dst_gb += 16;
}
/* next 4 lines */
src1 = src4;
src2 = src1 + width;
src3 = src2 + width;
src4 = src3 + width;
}
/* release memory */
free(img_data);
/* flush texture data from cache */
DCFlushRange(texture->data, height * stride);
return texture;
}
/* Write RGBA8 Texture to PNG file */
void gxTextureWritePNG(gx_texture *texture, FILE *png_file)
{
/* allocate PNG data buffer */
u8 *img_data = (u8 *)memalign(32, texture->width * texture->height * 4);
if(!img_data) return;
/* decode GX_TF_RGBA8 format (4x4 pixels paired titles) */
u16 *ar = (u16 *)(texture->data);
u16 *gb = (u16 *)(texture->data + 32);
u32 *dst1 = (u32 *)(img_data);
u32 *dst2 = dst1 + texture->width;
u32 *dst3 = dst2 + texture->width;
u32 *dst4 = dst3 + texture->width;
u32 i,h,w,pixel;
for (h=0; h<texture->height; h+=4)
{
for (w=0; w<texture->width; w+=4)
{
/* line N (4 pixels) */
for (i=0; i<4; i++)
{
pixel = ((*ar & 0xff) << 24) | (*gb << 8) | ((*ar & 0xff00) >> 8);
*dst1++ = pixel;
ar++;
gb++;
}
/* line N + 1 (4 pixels) */
for (i=0; i<4; i++)
{
pixel = ((*ar & 0xff) << 24) | (*gb << 8) | ((*ar & 0xff00) >> 8);
*dst2++ = pixel;
ar++;
gb++;
}
/* line N + 2 (4 pixels) */
for (i=0; i<4; i++)
{
pixel = ((*ar & 0xff) << 24) | (*gb << 8) | ((*ar & 0xff00) >> 8);
*dst3++ = pixel;
ar++;
gb++;
}
/* line N + 3 (4 pixels) */
for (i=0; i<4; i++)
{
pixel = ((*ar & 0xff) << 24) | (*gb << 8) | ((*ar & 0xff00) >> 8);
*dst4++ = pixel;
ar++;
gb++;
}
/* next paired tiles */
ar += 16;
gb += 16;
}
/* next 4 lines */
dst1 = dst4;
dst2 = dst1 + texture->width;
dst3 = dst2 + texture->width;
dst4 = dst3 + texture->width;
}
/* create a png write struct */
png_structp png_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
if(!png_ptr)
{
free(img_data);
return;
}
/* create a png info struct */
png_infop info_ptr = png_create_info_struct (png_ptr);
if (!info_ptr)
{
free(img_data);
png_destroy_write_struct(&png_ptr, NULL);
return;
}
/* set IO callback for the write function */
png_init_io(png_ptr, png_file);
/* set PNG file properties */
png_set_IHDR(png_ptr, info_ptr, texture->width, texture->height, 8, PNG_COLOR_TYPE_RGB_ALPHA,
PNG_INTERLACE_NONE, PNG_COMPRESSION_TYPE_DEFAULT, PNG_FILTER_TYPE_DEFAULT);
/* allocate row pointer data */
png_bytep *row_pointers = (png_bytep *)memalign (32, sizeof (png_bytep) * texture->height);
if (!row_pointers)
{
free (img_data);
png_destroy_write_struct(&png_ptr, &info_ptr);
return;
}
/* store raw image data */
for (i = 0; i < texture->height; i++)
{
row_pointers[i] = img_data + (i * texture->width * 4);
}
/* configure libpng for image data */
png_set_rows(png_ptr,info_ptr,row_pointers);
/* write data to PNG file */
png_write_png(png_ptr,info_ptr,PNG_TRANSFORM_IDENTITY,NULL);
/* finish compression and release memory */
png_write_end(png_ptr, NULL);
free(row_pointers);
free(img_data);
png_destroy_write_struct(&png_ptr, &info_ptr);
}
void gxTextureClose(gx_texture **p_texture)
{
gx_texture *texture = *p_texture;
if (texture)
{
if (texture->data) free(texture->data);
free(texture);
*p_texture = NULL;
}
}
/***************************************************************************************/
/* VIDEO engine */
/***************************************************************************************/
/* Take Screenshot */
void gx_video_Capture(void)
{
/* capture screenshot into a texture */
gx_texture texture;
gxCopyScreenshot(&texture);
/* open PNG file */
char fname[MAXPATHLEN];
sprintf(fname,"%s/snaps/%s.png", DEFAULT_PATH, rom_filename);
FILE *f = fopen(fname,"wb");
if (f)
{
/* encode screenshot into PNG file */
gxTextureWritePNG(&texture,f);
fclose(f);
}
}
/* Emulation mode -> Menu mode */
void gx_video_Stop(void)
{
/* lightgun textures */
gxTextureClose(&crosshair[0]);
gxTextureClose(&crosshair[1]);
/* reset GX */
gxResetRendering(1);
gxResetView(vmode);
/* VSYNC default callbacks */
VIDEO_SetPreRetraceCallback(NULL);
VIDEO_SetPostRetraceCallback(gx_input_UpdateMenu);
/* reset VI & adjust overscan */
gxDrawScreenshot(0xff);
vmode->viWidth = config.screen_w;
vmode->viXOrigin = (VI_MAX_WIDTH_NTSC - vmode->viWidth)/2;
VIDEO_Configure(vmode);
gxSetScreen();
}
/* Menu mode -> Emulation mode */
void gx_video_Start(void)
{
/* 50Hz/60Hz mode */
if ((config.tv_mode == 1) || ((config.tv_mode == 2) && vdp_pal))
gc_pal = 1;
else
gc_pal = 0;
/* VSYNC callbacks */
/* in 60hz mode we use VSYNC to synchronize frame emulation */
if (!gc_pal && !vdp_pal) VIDEO_SetPreRetraceCallback(vi_callback);
VIDEO_SetPostRetraceCallback(NULL);
VIDEO_Flush();
/* interlaced/progressive mode */
if (config.render == 2)
{
tvmodes[2]->viTVMode = VI_TVMODE_NTSC_PROG;
tvmodes[2]->xfbMode = VI_XFBMODE_SF;
}
else if (config.render == 1)
{
tvmodes[2]->viTVMode = tvmodes[0]->viTVMode & ~3;
tvmodes[2]->xfbMode = VI_XFBMODE_DF;
}
/* overscan */
if (config.overscan)
{
bitmap.viewport.x = (reg[12] & 1) ? 16 : 12;
bitmap.viewport.y = (reg[1] & 8) ? 0 : 8;
if (vdp_pal) bitmap.viewport.y += 24;
}
else
{
bitmap.viewport.x = 0;
bitmap.viewport.y = 0;
}
/* software NTSC filters */
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 );
}
/* lightgun textures */
if (config.gun_cursor[0] && (input.dev[4] == DEVICE_LIGHTGUN))
crosshair[0] = gxTextureOpenPNG(Crosshair_p1_png,0);
if (config.gun_cursor[1] && (input.dev[5] == DEVICE_LIGHTGUN))
crosshair[1] = gxTextureOpenPNG(Crosshair_p2_png,0);
/* apply changes on next video update */
bitmap.viewport.changed = 1;
/* reset GX rendering */
gxResetRendering(0);
}
/* GX render update */
void gx_video_Update(void)
{
int update = bitmap.viewport.changed;
/* check if display has changed */
if (update)
{
/* update texture size */
int old_vwidth = vwidth;
vwidth = bitmap.viewport.w + (2 * bitmap.viewport.x);
vheight = bitmap.viewport.h + (2 * bitmap.viewport.y);
/* if width has been changed, do no render this frame */
/* this fixes texture glitches when changing width middle-frame */
if (vwidth != old_vwidth) return;
/* special cases */
if (config.render && interlaced) vheight = vheight << 1;
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 >> 2) << 2;
vheight = (vheight >> 2) << 2;
/* initialize texture object */
GXTexObj texobj;
GX_InitTexObj(&texobj, texturemem, vwidth, vheight, GX_TF_RGB565, GX_CLAMP, GX_CLAMP, GX_FALSE);
/* configure texture filtering */
if (!config.bilinear) GX_InitTexObjLOD(&texobj,GX_NEAR,GX_NEAR_MIP_NEAR,0.0,10.0,0.0,GX_FALSE,GX_FALSE,GX_ANISO_1);
/* load texture object */
GX_LoadTexObj(&texobj, GX_TEXMAP0);
/* reset TV mode */
if (config.render) rmode = tvmodes[gc_pal*3 + 2];
else rmode = tvmodes[gc_pal*3 + interlaced];
/* reset aspect ratio */
gxResetScale(vwidth,vheight);
/* reset GX */
gxResetView(rmode);
}
/* texture is now directly mapped by the line renderer */
/* force texture cache update */
DCFlushRange(texturemem, TEX_SIZE);
GX_InvalidateTexAll();
/* render textured quad */
draw_square();
GX_DrawDone();
/* LightGun marks */
if (crosshair[0]) gxDrawCrosshair(crosshair[0], input.analog[0][0],input.analog[0][1]);
if (crosshair[1]) gxDrawCrosshair(crosshair[1], input.analog[1][0],input.analog[1][1]);
/* swap XFB */
whichfb ^= 1;
/* reconfigure VI */
if (update)
{
bitmap.viewport.changed = 0;
/* change VI mode */
VIDEO_Configure(rmode);
VIDEO_Flush();
/* copy EFB to XFB */
GX_CopyDisp(xfb[whichfb], GX_TRUE);
GX_Flush();
VIDEO_SetNextFramebuffer(xfb[whichfb]);
VIDEO_Flush();
/* field synchronizations */
VIDEO_WaitVSync();
if (rmode->viTVMode & VI_NON_INTERLACE) VIDEO_WaitVSync();
else while (VIDEO_GetNextField() != odd_frame) VIDEO_WaitVSync();
if (frameticker > 1) frameticker = 1;
}
else
{
/* copy EFB to XFB */
GX_CopyDisp(xfb[whichfb], GX_TRUE);
GX_Flush();
VIDEO_SetNextFramebuffer(xfb[whichfb]);
VIDEO_Flush();
}
}
/* Initialize VIDEO subsystem */
void gx_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();
cart.romsize = 0;
if (memcmp((char *)romptr,"GENPLUSR",8) == 0)
{
cart.romsize = romptr[2];
ARAMPut((char *) 0x80700000 + 0x20, (char *) 0x8000, cart.romsize);
}
/* 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;
/* use harwdare vertical scaling to fill screen */
vmode = &TVPal574IntDfScale;
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 VI */
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]);
/* Enable Video Interface */
VIDEO_SetBlack(FALSE);
/* Update VIDEO settings for next VBlank */
VIDEO_Flush();
/* Wait for VBlank */
VIDEO_WaitVSync();
VIDEO_WaitVSync();
/* Initialize GX */
gxStart();
gxResetRendering(1);
gxResetView(vmode);
/* initialize FONT */
if (!FONT_Init())
{
#ifdef HW_RVL
DI_Close();
SYS_ResetSystem(SYS_RESTART,0,0);
#else
SYS_ResetSystem(SYS_HOTRESET,0,0);
#endif
}
/* Initialize textures */
texturemem = memalign(32, TEX_SIZE);
screenshot = memalign(32, HASPECT*VASPECT*4);
if (!texturemem || !screenshot)
{
FONT_writeCenter("Failed to allocate textures memory... Rebooting",18,0,640,200,(GXColor)WHITE);
gxSetScreen();
sleep(2);
gx_video_Shutdown();
#ifdef HW_RVL
DI_Close();
SYS_ResetSystem(SYS_RESTART,0,0);
#else
SYS_ResetSystem(SYS_HOTRESET,0,0);
#endif
}
}
void gx_video_Shutdown(void)
{
if (texturemem) free(texturemem);
if (screenshot) free(screenshot);
FONT_Shutdown();
VIDEO_ClearFrameBuffer(vmode, xfb[whichfb], COLOR_BLACK);
VIDEO_Flush();
VIDEO_WaitVSync();
}
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