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snes9xgx/source/ngc/video.cpp
michniewski 9091260171 - video mode should now always correctly update after changing settings 
- widescreen(16:9) support, only enabled on filtered video modes because it degrades quality
2008-08-25 05:57:43 +00:00

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/****************************************************************************
* Snes9x 1.50
*
* Nintendo Gamecube Video
*
* This is a modified renderer from the Genesis Plus Project.
* Well - you didn't expect me to write another one did ya ? -;)
*
* softdev July 2006
* crunchy2 May 2007
****************************************************************************/
#include <gccore.h>
#include <ogcsys.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <wiiuse/wpad.h>
#include "snes9x.h"
#include "memmap.h"
#include "aram.h"
#include "snes9xGX.h"
/*** Snes9x GFX Buffer ***/
static unsigned char snes9xgfx[1024 * 512 * 2];
/*** Memory ROM Loading ***/
extern unsigned long ARAM_ROMSIZE;
extern unsigned int SMBTimer;
/*** 2D Video ***/
unsigned int *xfb[2] = { NULL, NULL }; /*** Double buffered ***/
int whichfb = 0; /*** Switch ***/
GXRModeObj *vmode; /*** Menu video mode ***/
int screenheight;
extern u32* backdrop;
/*** GX ***/
#define TEX_WIDTH 512
#define TEX_HEIGHT 512
#define DEFAULT_FIFO_SIZE 256 * 1024
unsigned int copynow = GX_FALSE;
static unsigned char gp_fifo[DEFAULT_FIFO_SIZE] ATTRIBUTE_ALIGN (32);
static unsigned char texturemem[TEX_WIDTH * (TEX_HEIGHT + 8)] ATTRIBUTE_ALIGN (32);
GXTexObj texobj;
static Mtx view;
int vwidth, vheight, oldvwidth, oldvheight;
u32 FrameTimer = 0;
u8 vmode_60hz = 0;
#define HASPECT 320
#define VASPECT 240
/* New texture based scaler */
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.
***/
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, 0.0F},
{0.0F, 0.5F, 0.0F},
{0.0F, 0.0F, -0.5F}
};
/***
*** Custom Video modes (used to emulate original console video modes)
***/
/** Original SNES PAL Resolutions: **/
/* 239 lines progressive (PAL 50Hz) */
GXRModeObj TV_239p =
{
VI_TVMODE_PAL_DS, // viDisplayMode
256, // fbWidth
239, // efbHeight
239, // xfbHeight
(VI_MAX_WIDTH_PAL - 640)/2, // viXOrigin
(VI_MAX_HEIGHT_PAL - 574)/2, // viYOrigin
640, // viWidth
574, // 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
}
};
/* 478 lines interlaced (PAL 50Hz, Deflicker) */
GXRModeObj TV_478i =
{
VI_TVMODE_PAL_INT, // viDisplayMode
512, // fbWidth
478, // efbHeight
478, // xfbHeight
(VI_MAX_WIDTH_PAL - 640)/2, // viXOrigin
(VI_MAX_HEIGHT_PAL - 572)/2, // viYOrigin
640, // 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
}
};
/** Original SNES NTSC Resolutions: **/
/* 224 lines progressive (NTSC or PAL 60Hz) */
GXRModeObj TV_224p =
{
VI_TVMODE_EURGB60_DS, // viDisplayMode
256, // fbWidth
224, // efbHeight
224, // xfbHeight
(VI_MAX_WIDTH_NTSC - 640)/2, // viXOrigin
(VI_MAX_HEIGHT_NTSC - 480)/2 + 8, // viYOrigin // +8 if we want to maintain rendered pixel aspect ratio (not 4:3)
640, // 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
}
};
/* 448 lines interlaced (NTSC or PAL 60Hz, Deflicker) */
GXRModeObj TV_448i =
{
VI_TVMODE_EURGB60_INT, // viDisplayMode
512, // fbWidth
448, // efbHeight
448, // xfbHeight
(VI_MAX_WIDTH_NTSC - 640)/2, // viXOrigin
(VI_MAX_HEIGHT_NTSC - 480)/2, // viYOrigin
640, // 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[4] = {
&TV_239p, &TV_478i, /* Snes PAL video modes */
&TV_224p, &TV_448i, /* Snes NTSC video modes */
};
#ifdef VIDEO_THREADING
/****************************************************************************
* VideoThreading
****************************************************************************/
#define TSTACK 16384
lwpq_t videoblankqueue;
lwp_t vbthread;
static unsigned char vbstack[TSTACK];
/****************************************************************************
* vbgetback
*
* This callback enables the emulator to keep running while waiting for a
* vertical blank.
*
* Putting LWP to good use :)
****************************************************************************/
static void *
vbgetback (void *arg)
{
while (1)
{
VIDEO_WaitVSync (); /**< Wait for video vertical blank */
LWP_SuspendThread (vbthread);
}
return NULL;
}
/****************************************************************************
* InitVideoThread
*
* libOGC provides a nice wrapper for LWP access.
* This function sets up a new local queue and attaches the thread to it.
****************************************************************************/
void
InitVideoThread ()
{
/*** Initialise a new queue ***/
LWP_InitQueue (&videoblankqueue);
/*** Create the thread on this queue ***/
LWP_CreateThread (&vbthread, vbgetback, NULL, vbstack, TSTACK, 80);
}
#endif
/****************************************************************************
* copy_to_xfb
*
* Stock code to copy the GX buffer to the current display mode.
* Also increments the frameticker, as it's called for each vb.
****************************************************************************/
static void
copy_to_xfb (u32 arg)
{
if (copynow == GX_TRUE)
{
//GX_SetZMode (GX_TRUE, GX_LEQUAL, GX_TRUE);
//GX_SetColorUpdate (GX_TRUE);
GX_CopyDisp (xfb[whichfb], GX_TRUE);
GX_Flush ();
copynow = GX_FALSE;
}
FrameTimer++;
SMBTimer++;
}
/****************************************************************************
* Scaler Support Functions
****************************************************************************/
static void
draw_init ()
{
GX_ClearVtxDesc ();
GX_SetVtxDesc (GX_VA_POS, GX_INDEX8);
GX_SetVtxDesc (GX_VA_CLR0, GX_INDEX8);
GX_SetVtxDesc (GX_VA_TEX0, GX_DIRECT);
GX_SetVtxAttrFmt (GX_VTXFMT0, GX_VA_POS, GX_POS_XYZ, 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_SetArray (GX_VA_POS, square, 3 * sizeof (s16));
GX_SetNumTexGens (1);
GX_SetNumChans (0);
GX_SetTexCoordGen (GX_TEXCOORD0, GX_TG_MTX2x4, GX_TG_TEX0, GX_IDENTITY);
//GX_SetTevOp (GX_TEVSTAGE0, GX_DECAL);
//GX_SetTevOrder (GX_TEVSTAGE0, GX_TEXCOORD0, GX_TEXMAP0, GX_COLOR0A0);
GX_SetTevOp (GX_TEVSTAGE0, GX_REPLACE);
GX_SetTevOrder (GX_TEVSTAGE0, GX_TEXCOORD0, GX_TEXMAP0, GX_COLORNULL);
memset (&view, 0, sizeof (Mtx));
guLookAt(view, &cam.pos, &cam.up, &cam.view);
GX_LoadPosMtxImm (view, GX_PNMTX0);
GX_InvalidateTexAll ();
GX_InitTexObj (&texobj, texturemem, vwidth, vheight, GX_TF_RGB565, GX_CLAMP, GX_CLAMP, GX_FALSE);
/* original video mode: force filtering OFF */
if (!GCSettings.render)
GX_InitTexObjLOD(&texobj,GX_NEAR,GX_NEAR_MIP_NEAR,2.5,9.0,0.0,GX_FALSE,GX_FALSE,GX_ANISO_1);
}
static void
draw_vert (u8 pos, u8 c, f32 s, f32 t)
{
GX_Position1x8 (pos);
GX_Color1x8 (c);
GX_TexCoord2f32 (s, t);
}
static void
draw_square (Mtx v)
{
Mtx m; // model matrix.
Mtx mv; // modelview matrix.
guMtxIdentity (m);
guMtxTransApply (m, m, 0, 0, -100);
guMtxConcat (v, m, mv);
GX_LoadPosMtxImm (mv, GX_PNMTX0);
GX_Begin (GX_QUADS, GX_VTXFMT0, 4);
draw_vert (0, 0, 0.0, 0.0);
draw_vert (1, 0, 1.0, 0.0);
draw_vert (2, 0, 1.0, 1.0);
draw_vert (3, 0, 0.0, 1.0);
GX_End ();
}
/****************************************************************************
* StartGX
*
* This function initialises the GX.
****************************************************************************/
static void
StartGX ()
{
Mtx p;
GXColor background = { 0, 0, 0, 0xff };
/*** Clear out FIFO area ***/
memset (&gp_fifo, 0, DEFAULT_FIFO_SIZE);
/*** Initialise GX ***/
GX_Init (&gp_fifo, DEFAULT_FIFO_SIZE);
GX_SetCopyClear (background, 0x00ffffff);
GX_SetViewport (0, 0, vmode->fbWidth, vmode->efbHeight, 0, 1);
GX_SetDispCopyYScale ((f32) vmode->xfbHeight / (f32) vmode->efbHeight);
GX_SetScissor (0, 0, vmode->fbWidth, vmode->efbHeight);
GX_SetDispCopySrc (0, 0, vmode->fbWidth, vmode->efbHeight);
GX_SetDispCopyDst (vmode->fbWidth, vmode->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_TRUE, GX_LEQUAL, GX_TRUE);
GX_SetColorUpdate (GX_TRUE);
// guPerspective (p, 60, 1.33F, 10.0F, 1000.0F);
// GX_LoadProjectionMtx (p, GX_PERSPECTIVE);
guOrtho(p, vmode->efbHeight/2, -(vmode->efbHeight/2), -(vmode->fbWidth/2), vmode->fbWidth/2, 10, 1000); // matrix, t, b, l, r, n, f
GX_LoadProjectionMtx (p, GX_ORTHOGRAPHIC);
GX_CopyDisp (xfb[whichfb], GX_TRUE); // reset xfb
vwidth = 100;
vheight = 100;
}
/****************************************************************************
* UpdatePadsCB
*
* called by postRetraceCallback in InitGCVideo - scans gcpad and wpad
****************************************************************************/
void
UpdatePadsCB ()
{
#ifdef HW_RVL
WPAD_ScanPads();
#endif
PAD_ScanPads();
}
/****************************************************************************
* InitGCVideo
*
* This function MUST be called at startup.
* - also sets up menu video mode
****************************************************************************/
void
InitGCVideo ()
{
int *romptr = (int *) 0x81000000; // injected rom
// init video
VIDEO_Init ();
PAD_Init ();
AUDIO_Init (NULL);
AR_Init (NULL, 0);
// Before going any further, let's copy any attached ROM image
if (memcmp ((char *) romptr, "SNESROM0", 8) == 0)
{
ARAM_ROMSIZE = romptr[2];
romptr = (int *) 0x81000020;
ARAMPut ((char *) romptr, (char *) AR_SNESROM, ARAM_ROMSIZE);
}
// get default video mode
vmode = VIDEO_GetPreferredMode(NULL);
switch (vmode->viTVMode >> 2)
{
case VI_PAL: /* 576 lines (PAL 50Hz) */
// set video signal mode
TV_239p.viTVMode = VI_TVMODE_PAL_DS;
TV_478i.viTVMode = VI_TVMODE_PAL_INT;
TV_224p.viTVMode = VI_TVMODE_PAL_DS;
TV_448i.viTVMode = VI_TVMODE_PAL_INT;
// set VI sizing
TV_239p.viWidth = TV_478i.viWidth = TV_224p.viWidth = TV_448i.viWidth = 640;
TV_239p.viHeight = TV_478i.viHeight = TV_224p.viHeight = TV_448i.viHeight = 480;
TV_239p.viXOrigin = TV_478i.viXOrigin = TV_224p.viXOrigin = TV_448i.viXOrigin = (VI_MAX_WIDTH_PAL - 640)/2;
TV_239p.viYOrigin = TV_478i.viYOrigin = TV_224p.viYOrigin = TV_448i.viYOrigin = (VI_MAX_HEIGHT_PAL - 574)/2;
vmode_60hz = 0;
/* 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) */
// set video signal mode
TV_239p.viTVMode = VI_TVMODE_NTSC_DS;
TV_478i.viTVMode = VI_TVMODE_NTSC_INT;
TV_224p.viTVMode = VI_TVMODE_NTSC_DS;
TV_448i.viTVMode = VI_TVMODE_NTSC_INT;
// set VI sizing
TV_239p.viWidth = TV_478i.viWidth = TV_224p.viWidth = TV_448i.viWidth = 640;
TV_239p.viHeight = TV_478i.viHeight = TV_224p.viHeight = TV_448i.viHeight = 480;
TV_239p.viXOrigin = TV_478i.viXOrigin = TV_224p.viXOrigin = TV_448i.viXOrigin = (VI_MAX_WIDTH_NTSC - 640)/2;
TV_239p.viYOrigin = TV_478i.viYOrigin = TV_224p.viYOrigin = TV_448i.viYOrigin = (VI_MAX_HEIGHT_NTSC - 480)/2;
// special additions (origin shifts can be moved to rendered square shifts during re-scaling)
TV_224p.viYOrigin += 8; // centering
TV_239p.viYOrigin += 2; //
TV_448i.viYOrigin += 16; //
vmode_60hz = 1;
break;
default: /* 480 lines (PAL 60Hz) */
// set video signal mode
TV_239p.viTVMode = VI_TVMODE(vmode->viTVMode >> 2, VI_NON_INTERLACE);
TV_478i.viTVMode = VI_TVMODE(vmode->viTVMode >> 2, VI_INTERLACE);
TV_224p.viTVMode = VI_TVMODE(vmode->viTVMode >> 2, VI_NON_INTERLACE);
TV_448i.viTVMode = VI_TVMODE(vmode->viTVMode >> 2, VI_INTERLACE);
// set VI sizing
TV_239p.viWidth = TV_478i.viWidth = TV_224p.viWidth = TV_448i.viWidth = 640;
TV_239p.viHeight = TV_478i.viHeight = TV_224p.viHeight = TV_448i.viHeight = 480;
TV_239p.viXOrigin = TV_478i.viXOrigin = TV_224p.viXOrigin = TV_448i.viXOrigin = (VI_MAX_WIDTH_NTSC - 640)/2;
TV_239p.viYOrigin = TV_478i.viYOrigin = TV_224p.viYOrigin = TV_448i.viYOrigin = (VI_MAX_HEIGHT_NTSC - 480)/2;
vmode_60hz = 1;
break;
}
VIDEO_Configure (vmode);
screenheight = vmode->xfbHeight;
// Allocate the video buffers
xfb[0] = (u32 *) MEM_K0_TO_K1 (SYS_AllocateFramebuffer (vmode));
xfb[1] = (u32 *) MEM_K0_TO_K1 (SYS_AllocateFramebuffer (vmode));
// A console is always useful while debugging.
console_init (xfb[0], 20, 64, vmode->fbWidth, vmode->xfbHeight, vmode->fbWidth * 2);
// Clear framebuffers etc.
VIDEO_ClearFrameBuffer (vmode, xfb[0], COLOR_BLACK);
VIDEO_ClearFrameBuffer (vmode, xfb[1], COLOR_BLACK);
VIDEO_SetNextFramebuffer (xfb[0]);
// video callbacks
VIDEO_SetPostRetraceCallback ((VIRetraceCallback)UpdatePadsCB);
VIDEO_SetPreRetraceCallback ((VIRetraceCallback)copy_to_xfb);
VIDEO_SetBlack (FALSE);
VIDEO_Flush ();
VIDEO_WaitVSync ();
if (vmode->viTVMode & VI_NON_INTERLACE)
VIDEO_WaitVSync ();
copynow = GX_FALSE;
StartGX ();
draw_init ();
#ifdef VIDEO_THREADING
InitVideoThread ();
#endif
// Finally, the video is up and ready for use :)
}
/****************************************************************************
* ResetVideo_Emu
*
* reset the video/rendering mode for the emulator rendering
****************************************************************************/
void
ResetVideo_Emu ()
{
GXRModeObj *rmode;
Mtx p;
if (!GCSettings.render) // original render mode
{
int i;
for (i=0; i<4; i++) {
if (tvmodes[i]->efbHeight == vheight) break;
}
rmode = tvmodes[i];
}
else
rmode = vmode; // same mode as menu
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();
GX_SetViewport (0, 0, rmode->fbWidth, rmode->efbHeight, 0, 1);
GX_SetDispCopyYScale ((f32) rmode->xfbHeight / (f32) rmode->efbHeight);
GX_SetScissor (0, 0, rmode->fbWidth, rmode->efbHeight);
GX_SetDispCopySrc (0, 0, rmode->fbWidth, rmode->efbHeight);
GX_SetDispCopyDst (rmode->fbWidth, rmode->xfbHeight);
GX_SetCopyFilter (rmode->aa, rmode->sample_pattern, GCSettings.render ? GX_TRUE : GX_FALSE, rmode->vfilter);
GX_SetFieldMode (rmode->field_rendering, ((rmode->viHeight == 2 * rmode->xfbHeight) ? GX_ENABLE : GX_DISABLE));
GX_SetPixelFmt (GX_PF_RGB8_Z24, GX_ZC_LINEAR);
// guPerspective (p, 60, 1.33F, 10.0F, 1000.0F);
// GX_LoadProjectionMtx (p, GX_PERSPECTIVE);
guOrtho(p, rmode->efbHeight/2, -(rmode->efbHeight/2), -(rmode->fbWidth/2), rmode->fbWidth/2, 10, 1000); // matrix, t, b, l, r, n, f
GX_LoadProjectionMtx (p, GX_ORTHOGRAPHIC);
// DEBUG
char* msg = (char*) malloc(256*sizeof(char));
sprintf (msg, (char*)"Interlaced: %i, vwidth: %d, vheight: %d, fb_W: %u, efb_H: %u", IPPU.Interlace, vwidth, vheight, rmode->fbWidth, rmode->efbHeight);
S9xMessage (0, 0, msg);
free(msg);
}
/****************************************************************************
* ResetVideo_Menu
*
* reset the video/rendering mode for the menu
****************************************************************************/
void
ResetVideo_Menu ()
{
Mtx p;
VIDEO_Configure (vmode);
VIDEO_ClearFrameBuffer (vmode, xfb[whichfb], COLOR_BLACK);
VIDEO_Flush();
VIDEO_WaitVSync();
if (vmode->viTVMode & VI_NON_INTERLACE) VIDEO_WaitVSync();
else while (VIDEO_GetNextField()) VIDEO_WaitVSync();
GX_SetViewport (0, 0, vmode->fbWidth, vmode->efbHeight, 0, 1);
GX_SetDispCopyYScale ((f32) vmode->xfbHeight / (f32) vmode->efbHeight);
GX_SetScissor (0, 0, vmode->fbWidth, vmode->efbHeight);
GX_SetDispCopySrc (0, 0, vmode->fbWidth, vmode->efbHeight);
GX_SetDispCopyDst (vmode->fbWidth, vmode->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);
// guPerspective (p, 60, 1.33F, 10.0F, 1000.0F);
// GX_LoadProjectionMtx (p, GX_PERSPECTIVE);
guOrtho(p, vmode->efbHeight/2, -(vmode->efbHeight/2), -(vmode->fbWidth/2), vmode->fbWidth/2, 10, 1000); // matrix, t, b, l, r, n, f
GX_LoadProjectionMtx (p, GX_ORTHOGRAPHIC);
}
/****************************************************************************
* MakeTexture
*
* Proper GNU Asm rendition of the above, converted by shagkur. - Thanks!
****************************************************************************/
void
MakeTexture (const void *src, void *dst, s32 width, s32 height)
{
register u32 tmp0 = 0, tmp1 = 0, tmp2 = 0, tmp3 = 0;
__asm__ __volatile__ (" srwi %6,%6,2\n"
" srwi %7,%7,2\n"
" subi %3,%4,4\n"
" mr %4,%3\n"
" subi %4,%4,4\n"
"2: mtctr %6\n"
" mr %0,%5\n"
//
"1: lwz %1,0(%5)\n"
" stwu %1,8(%4)\n"
" lwz %2,4(%5)\n"
" stwu %2,8(%3)\n"
" lwz %1,1024(%5)\n"
" stwu %1,8(%4)\n"
" lwz %2,1028(%5)\n"
" stwu %2,8(%3)\n"
" lwz %1,2048(%5)\n"
" stwu %1,8(%4)\n"
" lwz %2,2052(%5)\n"
" stwu %2,8(%3)\n"
" lwz %1,3072(%5)\n"
" stwu %1,8(%4)\n"
" lwz %2,3076(%5)\n"
" stwu %2,8(%3)\n"
" addi %5,%5,8\n"
" bdnz 1b\n"
" addi %5,%0,4096\n"
" subic. %7,%7,1\n"
" bne 2b"
// 0 1 2 3 4 5 6 7
:"=&r" (tmp0), "=&r" (tmp1), "=&r" (tmp2),
"=&r" (tmp3), "+r" (dst):"r" (src), "r" (width),
"r" (height));
}
/****************************************************************************
* Update Video
****************************************************************************/
uint32 prevRenderedFrameCount = 0;
extern bool CheckVideo;
void
update_video (int width, int height)
{
vwidth = width;
vheight = height;
#ifdef VIDEO_THREADING
/* Ensure previous vb has complete */
while ((LWP_ThreadIsSuspended (vbthread) == 0) || (copynow == GX_TRUE))
#else
while (copynow == GX_TRUE)
#endif
{
usleep (50);
}
whichfb ^= 1;
if ((oldvheight != vheight) || (oldvwidth != vwidth) // if rendered width/height changes
|| (CheckVideo && (IPPU.RenderedFramesCount != prevRenderedFrameCount)) // or if we get back from the menu, and have rendered at least 1 frame
)
{
int xscale, yscale, xshift, yshift;
yshift = xshift = 0;
ResetVideo_Emu (); // reset video to emulator rendering settings
/** Update scaling **/
if (!GCSettings.render)
{
// original render modes
xscale = vwidth / 2;
yscale = vheight / 2;
} else {
xscale = 320;
yscale = (vmode_60hz) ? 240 : 287; // ntsc, pal scaling
}
// aspect ratio scaling (change width scale)
// yes its pretty cheap and ugly, but its easy!
if (GCSettings.widescreen && GCSettings.render) // don't allow this on original render modes because its ugly.
xscale -= (4.0*yscale)/9;
square[6] = square[3] = xscale + xshift;
square[0] = square[9] = -xscale + xshift;
square[4] = square[1] = yscale + yshift;
square[7] = square[10] = -yscale + yshift;
draw_init ();
GX_InvVtxCache ();
// DEBUG
char* msg = (char*) malloc(256*sizeof(char));
sprintf (msg, (char*)"xscale: %d, yscale: %d", xscale, yscale);
S9xMessage (0, 0, msg);
free(msg);
//GX_SetViewport (0, 0, rmode->fbWidth, rmode->efbHeight, 0, 1);
oldvwidth = vwidth;
oldvheight = vheight;
CheckVideo = 0;
}
GX_InvalidateTexAll ();
MakeTexture ((char *) GFX.Screen, (char *) texturemem, vwidth, vheight);
DCFlushRange (texturemem, TEX_WIDTH * TEX_HEIGHT * 2);
GX_LoadTexObj (&texobj, GX_TEXMAP0);
draw_square (view);
GX_DrawDone ();
VIDEO_SetNextFramebuffer (xfb[whichfb]);
VIDEO_Flush ();
copynow = GX_TRUE;
#ifdef VIDEO_THREADING
/* Return to caller, don't waste time waiting for vb */
LWP_ResumeThread (vbthread);
#endif
}
// FIX
/****************************************************************************
* Zoom Functions
****************************************************************************/
void
zoom (float speed)
{
Vector v;
v.x = cam.view.x - cam.pos.x;
v.y = cam.view.y - cam.pos.y;
v.z = cam.view.z - cam.pos.z;
cam.pos.x += v.x * speed;
cam.pos.z += v.z * speed;
cam.view.x += v.x * speed;
cam.view.z += v.z * speed;
oldvheight = 0; // update video
}
void
zoom_reset ()
{
// reset cam to defaults
cam.pos.x = cam.pos.y = cam.pos.z = cam.up.x = cam.up.z = 0.0F;
cam.up.y = 0.0F;
cam.view.z = -0.5F;
oldvheight = 0; // update video
}
/****************************************************************************
* Drawing screen
****************************************************************************/
void
clearscreen (int colour)
{
whichfb ^= 1;
VIDEO_ClearFrameBuffer (vmode, xfb[whichfb], colour);
#ifdef HW_RVL
// on wii copy from memory
memcpy ((char *) xfb[whichfb], (char *) backdrop, 640 * screenheight * 2);
#else
// on gc copy from aram
ARAMFetch ((char *) xfb[whichfb], (char *) AR_BACKDROP, 640 * screenheight * 2);
#endif
}
void
showscreen ()
{
copynow = GX_FALSE;
VIDEO_SetNextFramebuffer (xfb[whichfb]);
VIDEO_Flush ();
VIDEO_WaitVSync ();
}
/****************************************************************************
* setGFX
*
* Setup the global GFX information for Snes9x
****************************************************************************/
void
setGFX ()
{
GFX.Screen = (unsigned short *) snes9xgfx;
GFX.Pitch = 1024;
}
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