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8af85558d0
Genesis-Plus-GX/source/gx/gx_video.c
ekeeke31 8af85558d0 .fixed YM2413 context restore when changing options 
.added YM2413 context to Master System savestates
.removed support for older savestates format (1.3.x, 1.4.x), use 1.5.0 to convert old savestates to new (1.5.x) format
2011-04-30 12:56:01 +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 "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 ***/
GXRModeObj *vmode; /* Default Video Mode */
u8 *texturemem; /* Texture Data */
u8 *screenshot; /* Texture Data */
/*** 50/60hz flag ***/
u32 gc_pal = 0;
/*** NTSC Filters ***/
sms_ntsc_t *sms_ntsc;
md_ntsc_t *md_ntsc;
/*** GX FIFO ***/
static u8 gp_fifo[DEFAULT_FIFO_SIZE] ATTRIBUTE_ALIGN (32);
/*** GX Textures ***/
static u32 vwidth,vheight;
static gx_texture *crosshair[2];
/*** Framebuffers ***/
static u32 *xfb[2];
static u32 whichfb = 0;
/***************************************************************************************/
/* 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
{
guVector pos;
guVector up;
guVector 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_SetClipMode(GX_CLIP_DISABLE);
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 rendering mode */
static void gxResetMode(GXRModeObj *tvmode)
{
Mtx44 p;
f32 yScale = GX_GetYScaleFactor(tvmode->efbHeight, tvmode->xfbHeight);
u16 xfbHeight = GX_SetDispCopyYScale(yScale);
u16 xfbWidth = tvmode->fbWidth;
if (xfbWidth & 15) // xfb width is 16 pixels aligned
xfbWidth = (xfbWidth & ~15) + 16;
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(xfbWidth, 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();
}
/* Manage Aspect Ratio */
static void gxSetAspectRatio(int *xscale, int *yscale)
{
/* original aspect ratio */
/* the following values have been deducted from comparison with a real 50/60hz Mega Drive */
if (config.aspect)
{
/* vertical borders */
if (config.overscan & 1)
{
/* Genesis outputs 288(PAL) or 243(NTSC) lines */
/* Wii & Game Cube output 286/574(PAL50) or 240/480 (PAL60 & NTSC) lines */
*yscale = vdp_pal + ((gc_pal && !config.render) ? 143 : 120);
}
else
{
/* overscan is simulated (black) */
*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;
}
/* horizontal borders */
if (config.overscan & 2)
{
/* max visible range is ~712 pixels, not 720 */
*xscale = (reg[12] & 1) ? 356 : 360;
}
else
{
/* overscan is simulated (black) */
*xscale = 327;
}
/* 16/9 correction */
if (config.aspect & 2)
{
*xscale = (*xscale * 3) / 4;
}
}
/* manual aspect ratio (default is unscaled raw) */
else
{
/* vertical borders */
if (config.overscan & 1)
{
*yscale = (gc_pal && !config.render) ? (vdp_pal ? (268*144 / bitmap.viewport.h):143) : (vdp_pal ? (224*144 / bitmap.viewport.h):120);
}
else
{
*yscale = (gc_pal && !config.render) ? 134 : 112;
}
/* horizontal borders */
if (config.overscan & 2)
{
*xscale = 348;
}
else
{
*xscale = 320;
}
/* add user scaling */
*xscale += config.xscale;
*yscale += config.yscale;
}
}
/* Reset GX/VI hardware scaler */
static void gxResetScaler(u32 width)
{
int xscale = 0;
int yscale = 0;
int offset = 0;
/* retrieve screen aspect ratio */
gxSetAspectRatio(&xscale, &yscale);
/* default EFB width */
rmode->fbWidth = 640;
/* no filtering, disable GX horizontal scaling */
if (!config.bilinear && !config.ntsc)
{
if ((width * 2) <= 640)
rmode->fbWidth = width * 2;
else if (width <= 640)
rmode->fbWidth = width;
}
/* configure VI width */
if ((xscale * 2) > rmode->fbWidth)
{
/* max width = 720 pixels */
if (xscale > 360)
{
/* save offset for later */
offset = ((xscale - 360) * rmode->fbWidth) / rmode->viWidth;
/* maximal width */
xscale = 360;
}
/* enable VI upscaling */
rmode->viWidth = xscale * 2;
rmode->viXOrigin = (720 - (xscale * 2)) / 2;
/* default GX horizontal scaling */
xscale = (rmode->fbWidth / 2);
/* handle additional upscaling */
if (offset)
{
/* no filtering, reduce EFB width to increase VI upscaling */
if (!config.bilinear && !config.ntsc)
rmode->fbWidth -= (offset * 2);
/* increase GX horizontal scaling */
else
xscale += offset;
}
}
else
{
/* VI horizontal scaling is disabled */
rmode->viWidth = rmode->fbWidth;
rmode->viXOrigin = (720 - rmode->fbWidth) / 2;
}
/* Adjust screen position */
int xshift = (config.xshift * rmode->fbWidth) / rmode->viWidth;
int yshift = (config.yshift * rmode->efbHeight) / rmode->viHeight;
/* Double Resolution modes (480i/576i/480p) */
if (config.render)
{
yscale = yscale * 2;
}
/* Set GX scaler (Vertex Position matrix) */
square[6] = square[3] = xshift + xscale;
square[0] = square[9] = xshift - xscale;
square[4] = square[1] = yshift + yscale;
square[7] = square[10] = yshift - yscale;
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 ();
/* 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;
guVector axis = (guVector) {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_REPEAT, GX_REPEAT, 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;
/* get current game screen 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();
/* get current aspect ratio */
int xscale,yscale;
gxSetAspectRatio(&xscale, &yscale);
/* adjust horizontal scaling */
xscale = (xscale * vmode->fbWidth) / vmode->viWidth;
/* adjust screen position */
int xshift = (config.xshift * vmode->fbWidth) / vmode->viWidth;
int yshift = (config.yshift * vmode->efbHeight) / vmode->viHeight;
/* set vertices position & size */
s32 x = xshift - xscale;
s32 y = yshift - (yscale * 2);
s32 w = xscale * 2;
s32 h = yscale * 4;
/* 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 */
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 ? 696 : 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 ();
/* 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_DrawDone();
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();
GX_Flush();
DCFlushRange(texture->data, texture->width * texture->height * 4);
}
/* Take Screenshot */
void gxSaveScreenshot(char *filename)
{
/* capture screenshot into a texture */
gx_texture texture;
gxCopyScreenshot(&texture);
/* open PNG file */
FILE *f = fopen(filename,"wb");
if (f)
{
/* encode screenshot into PNG file */
gxTextureWritePNG(&texture,f);
fclose(f);
}
}
void gxSetScreen(void)
{
GX_DrawDone();
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_sig_cmp (magic, 0, 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 */
/***************************************************************************************/
/* Emulation mode -> Menu mode */
void gx_video_Stop(void)
{
/* unallocate NTSC filters */
if (sms_ntsc) free(sms_ntsc);
if (md_ntsc) free(md_ntsc);
sms_ntsc = NULL;
md_ntsc = NULL;
/* lightgun textures */
gxTextureClose(&crosshair[0]);
gxTextureClose(&crosshair[1]);
/* GX menu rendering */
gxResetRendering(1);
gxResetMode(vmode);
/* display game snapshot */
gxClearScreen((GXColor)BLACK);
gxDrawScreenshot(0xff);
/* default VI settings */
VIDEO_SetPreRetraceCallback(NULL);
VIDEO_SetPostRetraceCallback(gx_input_UpdateMenu);
#ifdef HW_RVL
VIDEO_SetTrapFilter(1);
VIDEO_SetGamma(VI_GM_1_0);
#endif
/* adjust TV width */
vmode->viWidth = config.screen_w;
vmode->viXOrigin = (VI_MAX_WIDTH_NTSC - vmode->viWidth)/2;
VIDEO_Configure(vmode);
/* wait for VSYNC */
gxSetScreen();
}
/* Menu mode -> Emulation mode */
void gx_video_Start(void)
{
#ifdef HW_RVL
VIDEO_SetTrapFilter(config.trap);
VIDEO_SetGamma((int)(config.gamma * 10.0));
#endif
/* TV mode */
if ((config.tv_mode == 1) || ((config.tv_mode == 2) && vdp_pal))
{
/* 50 Hz */
gc_pal = 1;
}
else
{
/* 60 Hz */
gc_pal = 0;
}
/* VSYNC callbacks */
/* If TV mode matches emulated video mode, frame emulation is synchronized with Video Interrupt */
if (gc_pal == vdp_pal)
{
VIDEO_SetPreRetraceCallback(vi_callback);
}
VIDEO_SetPostRetraceCallback(NULL);
VIDEO_Flush();
/* set interlaced or progressive video 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;
}
/* force viewport update */
bitmap.viewport.x = (config.overscan & 2) * 7;
bitmap.viewport.changed = 3;
/* NTSC filter */
if (config.ntsc)
{
/* allocate filters */
if (!sms_ntsc)
{
sms_ntsc = (sms_ntsc_t *)memalign(32,sizeof(sms_ntsc_t));
}
if (!md_ntsc)
{
md_ntsc = (md_ntsc_t *)memalign(32,sizeof(md_ntsc_t));
}
/* setup filters default configuration */
switch (config.ntsc)
{
case 1:
sms_ntsc_init(sms_ntsc, &sms_ntsc_composite);
md_ntsc_init(md_ntsc, &md_ntsc_composite);
break;
case 2:
sms_ntsc_init(sms_ntsc, &sms_ntsc_svideo);
md_ntsc_init(md_ntsc, &md_ntsc_svideo);
break;
case 3:
sms_ntsc_init(sms_ntsc, &sms_ntsc_rgb);
md_ntsc_init(md_ntsc, &md_ntsc_rgb);
break;
}
}
/* lightgun textures */
if (config.gun_cursor[0] && ((input.system[1] == SYSTEM_MENACER) || (input.system[1] == SYSTEM_JUSTIFIER) || (input.system[0] == SYSTEM_LIGHTPHASER)))
{
crosshair[0] = gxTextureOpenPNG(Crosshair_p1_png,0);
}
if (config.gun_cursor[1] && ((input.system[1] == SYSTEM_JUSTIFIER) || (input.system[1] == SYSTEM_LIGHTPHASER)))
{
crosshair[1] = gxTextureOpenPNG(Crosshair_p2_png,0);
}
/* GX emulation rendering */
gxResetRendering(0);
/* resynchronize emulation with VSYNC*/
VIDEO_WaitVSync();
}
/* GX render update */
void gx_video_Update(void)
{
int update = bitmap.viewport.changed & 1;
/* check if display has changed during frame */
if (update)
{
/* update texture size */
vwidth = bitmap.viewport.w + (2 * bitmap.viewport.x);
vheight = bitmap.viewport.h + (2 * bitmap.viewport.y);
/* interlaced mode */
if (config.render && interlaced)
{
vheight = vheight << 1;
}
/* ntsc filter */
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);
/* update rendering mode */
if (config.render)
{
rmode = tvmodes[gc_pal*3 + 2];
}
else
{
rmode = tvmodes[gc_pal*3 + interlaced];
}
/* update aspect ratio */
gxResetScaler(vwidth);
/* update GX rendering mode */
gxResetMode(rmode);
/* update VI mode */
VIDEO_Configure(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();
/* Lightgun # 1 screen mark */
if (crosshair[0])
{
if (input.system[0] == SYSTEM_LIGHTPHASER)
{
gxDrawCrosshair(crosshair[0], input.analog[0][0],input.analog[0][1]);
}
else
{
gxDrawCrosshair(crosshair[0], input.analog[4][0],input.analog[4][1]);
}
}
/* Lightgun # 2 screen mark */
if (crosshair[1])
{
if (input.system[1] == SYSTEM_LIGHTPHASER)
{
gxDrawCrosshair(crosshair[1], input.analog[1][0],input.analog[1][1]);
}
else
{
gxDrawCrosshair(crosshair[1], input.analog[5][0],input.analog[5][1]);
}
}
/* swap XFB */
whichfb ^= 1;
/* copy EFB to XFB */
GX_DrawDone();
GX_CopyDisp(xfb[whichfb], GX_TRUE);
GX_Flush();
/* XFB is ready to be displayed */
VIDEO_SetNextFramebuffer(xfb[whichfb]);
VIDEO_Flush();
if (update)
{
/* Clear update flags */
bitmap.viewport.changed &= ~1;
/* field synchronization */
VIDEO_WaitVSync();
if (rmode->viTVMode & VI_NON_INTERLACE)
{
VIDEO_WaitVSync();
}
else while (VIDEO_GetNextField() != odd_frame)
{
VIDEO_WaitVSync();
}
/* audio & video resynchronization */
audioStarted = 0;
}
}
/* 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);
gxResetMode(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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