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rockbox/apps/plugins/rockboy/lcd.c
Karl Kurbjun d42041043b Add in the needed crt0.S code for the wakeup alarm also 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@19094 a1c6a512-1295-4272-9138-f99709370657
2008-11-12 03:57:32 +00:00

1210 lines
30 KiB
C
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#include "rockmacros.h"
#include "defs.h"
#include "regs.h"
#include "hw.h"
#include "mem.h"
#include "lcd-gb.h"
#include "fb.h"
#ifdef HAVE_LCD_COLOR
#include "palette-presets.h"
#endif
#ifdef USE_ASM
#include "asm.h"
#endif
struct lcd lcd;
struct scan scan IBSS_ATTR;
#define BG (scan.bg)
#define WND (scan.wnd)
#if LCD_DEPTH ==16
#define BUF (scan.buf)
#else
#define BUF (scan.buf[scanline_ind])
#endif
#define PRI (scan.pri)
#define PAL (scan.pal)
#define VS (scan.vs) /* vissprites */
#define NS (scan.ns)
#define L (scan.l) /* line */
#define X (scan.x) /* screen position */
#define Y (scan.y)
#define S (scan.s) /* tilemap position */
#define T (scan.t)
#define U (scan.u) /* position within tile */
#define V (scan.v)
#define WX (scan.wx)
#define WY (scan.wy)
#define WT (scan.wt)
#define WV (scan.wv)
byte patpix[4096][8][8]
#if defined(CPU_COLDFIRE)
__attribute__ ((aligned(16))) /* to profit from burst mode */
#endif
;
byte patdirty[1024];
byte anydirty;
#if LCD_DEPTH < 16
static int scanline_ind=0;
#endif
static int dmg_pal[4][4];
fb_data *vdest;
#ifndef ASM_UPDATEPATPIX
static void updatepatpix(void) ICODE_ATTR;
static void updatepatpix(void)
{
int i;
#if ((CONFIG_CPU != SH7034) && !defined(CPU_COLDFIRE))
int k, a, c;
#endif
byte *vram = lcd.vbank[0];
if (!anydirty) return;
for (i = 0; i < 1024; i++)
{
int j;
if (i == 384) i = 512;
if (i == 896) break;
if (!patdirty[i]) continue;
patdirty[i] = 0;
for (j = 0; j < 8; j++)
{
#if CONFIG_CPU == SH7034
asm volatile (
"mov.w @%2,r1 \n"
"swap.b r1,r2 \n"
"mov #0,r0 \n"
"shlr r1 \n"
"rotcl r0 \n"
"shlr r2 \n"
"rotcl r0 \n"
"mov.b r0,@%0 \n"
"mov.b r0,@(7,%1) \n"
"mov #0,r0 \n"
"shlr r1 \n"
"rotcl r0 \n"
"shlr r2 \n"
"rotcl r0 \n"
"mov.b r0,@(1,%0) \n"
"mov.b r0,@(6,%1) \n"
"mov #0,r0 \n"
"shlr r1 \n"
"rotcl r0 \n"
"shlr r2 \n"
"rotcl r0 \n"
"mov.b r0,@(2,%0) \n"
"mov.b r0,@(5,%1) \n"
"mov #0,r0 \n"
"shlr r1 \n"
"rotcl r0 \n"
"shlr r2 \n"
"rotcl r0 \n"
"mov.b r0,@(3,%0) \n"
"mov.b r0,@(4,%1) \n"
"mov #0,r0 \n"
"shlr r1 \n"
"rotcl r0 \n"
"shlr r2 \n"
"rotcl r0 \n"
"mov.b r0,@(4,%0) \n"
"mov.b r0,@(3,%1) \n"
"mov #0,r0 \n"
"shlr r1 \n"
"rotcl r0 \n"
"shlr r2 \n"
"rotcl r0 \n"
"mov.b r0,@(5,%0) \n"
"mov.b r0,@(2,%1) \n"
"mov #0,r0 \n"
"shlr r1 \n"
"rotcl r0 \n"
"shlr r2 \n"
"rotcl r0 \n"
"mov.b r0,@(6,%0) \n"
"mov.b r0,@(1,%1) \n"
"mov #0,r0 \n"
"shlr r1 \n"
"rotcl r0 \n"
"shlr r2 \n"
"rotcl r0 \n"
"mov.b r0,@(7,%0) \n"
"mov.b r0,@%1 \n"
: /* outputs */
: /* inputs */
/* %0 */ "r"(patpix[i+1024][j]),
/* %1 */ "r"(patpix[i][j]),
/* %2 */ "r"(&vram[(i<<4)|(j<<1)])
: /* clobbers */
"r0", "r1", "r2"
);
#elif defined(CPU_COLDFIRE)
asm volatile (
"move.b (%2),%%d2 \n"
"move.b (1,%2),%%d1 \n"
"addq.l #8,%1 \n"
"clr.l %%d0 \n"
"lsr.l #1,%%d1 \n"
"addx.l %%d0,%%d0 \n"
"lsr.l #1,%%d2 \n"
"addx.l %%d0,%%d0 \n"
"move.b %%d0,-(%1) \n"
"lsl.l #6,%%d0 \n"
"lsr.l #1,%%d1 \n"
"addx.l %%d0,%%d0 \n"
"lsr.l #1,%%d2 \n"
"addx.l %%d0,%%d0 \n"
"move.b %%d0,-(%1) \n"
"lsl.l #6,%%d0 \n"
"lsr.l #1,%%d1 \n"
"addx.l %%d0,%%d0 \n"
"lsr.l #1,%%d2 \n"
"addx.l %%d0,%%d0 \n"
"move.b %%d0,-(%1) \n"
"lsl.l #6,%%d0 \n"
"lsr.l #1,%%d1 \n"
"addx.l %%d0,%%d0 \n"
"lsr.l #1,%%d2 \n"
"addx.l %%d0,%%d0 \n"
"move.l %%d0,(%0) \n"
"move.b %%d0,-(%1) \n"
"clr.l %%d0 \n"
"lsr.l #1,%%d1 \n"
"addx.l %%d0,%%d0 \n"
"lsr.l #1,%%d2 \n"
"addx.l %%d0,%%d0 \n"
"move.b %%d0,-(%1) \n"
"lsl.l #6,%%d0 \n"
"lsr.l #1,%%d1 \n"
"addx.l %%d0,%%d0 \n"
"lsr.l #1,%%d2 \n"
"addx.l %%d0,%%d0 \n"
"move.b %%d0,-(%1) \n"
"lsl.l #6,%%d0 \n"
"lsr.l #1,%%d1 \n"
"addx.l %%d0,%%d0 \n"
"lsr.l #1,%%d2 \n"
"addx.l %%d0,%%d0 \n"
"move.b %%d0,-(%1) \n"
"lsl.l #6,%%d0 \n"
"lsr.l #1,%%d1 \n"
"addx.l %%d0,%%d0 \n"
"lsr.l #1,%%d2 \n"
"addx.l %%d0,%%d0 \n"
"move.l %%d0,(4,%0) \n"
"move.b %%d0,-(%1) \n"
: /* outputs */
: /* inputs */
/* %0 */ "a"(patpix[i+1024][j]),
/* %1 */ "a"(patpix[i][j]),
/* %2 */ "a"(&vram[(i<<4)|(j<<1)])
: /* clobbers */
"d0", "d1", "d2"
);
#else
a = ((i<<4) | (j<<1));
for (k = 0; k < 8; k++)
{
c = vram[a] & (1<<k) ? 1 : 0;
c |= vram[a+1] & (1<<k) ? 2 : 0;
patpix[i+1024][j][k] = c;
}
for (k = 0; k < 8; k++)
patpix[i][j][k] =
patpix[i+1024][j][7-k];
#endif
}
#if CONFIG_CPU == SH7034
asm volatile (
"mov.l @%0,r0 \n"
"mov.l @(4,%0),r1 \n"
"mov.l r0,@(56,%1) \n"
"mov.l r1,@(60,%1) \n"
"mov.l @(8,%0),r0 \n"
"mov.l @(12,%0),r1 \n"
"mov.l r0,@(48,%1) \n"
"mov.l r1,@(52,%1) \n"
"mov.l @(16,%0),r0 \n"
"mov.l @(20,%0),r1 \n"
"mov.l r0,@(40,%1) \n"
"mov.l r1,@(44,%1) \n"
"mov.l @(24,%0),r0 \n"
"mov.l @(28,%0),r1 \n"
"mov.l r0,@(32,%1) \n"
"mov.l r1,@(36,%1) \n"
"mov.l @(32,%0),r0 \n"
"mov.l @(36,%0),r1 \n"
"mov.l r0,@(24,%1) \n"
"mov.l r1,@(28,%1) \n"
"mov.l @(40,%0),r0 \n"
"mov.l @(44,%0),r1 \n"
"mov.l r0,@(16,%1) \n"
"mov.l r1,@(20,%1) \n"
"mov.l @(48,%0),r0 \n"
"mov.l @(52,%0),r1 \n"
"mov.l r0,@(8,%1) \n"
"mov.l r1,@(12,%1) \n"
"mov.l @(56,%0),r0 \n"
"mov.l @(60,%0),r1 \n"
"mov.l r0,@%1 \n"
"mov.l r1,@(4,%1) \n"
"add %2,%0 \n"
"add %2,%1 \n"
"mov.l @%0,r0 \n"
"mov.l @(4,%0),r1 \n"
"mov.l r0,@(56,%1) \n"
"mov.l r1,@(60,%1) \n"
"mov.l @(8,%0),r0 \n"
"mov.l @(12,%0),r1 \n"
"mov.l r0,@(48,%1) \n"
"mov.l r1,@(52,%1) \n"
"mov.l @(16,%0),r0 \n"
"mov.l @(20,%0),r1 \n"
"mov.l r0,@(40,%1) \n"
"mov.l r1,@(44,%1) \n"
"mov.l @(24,%0),r0 \n"
"mov.l @(28,%0),r1 \n"
"mov.l r0,@(32,%1) \n"
"mov.l r1,@(36,%1) \n"
"mov.l @(32,%0),r0 \n"
"mov.l @(36,%0),r1 \n"
"mov.l r0,@(24,%1) \n"
"mov.l r1,@(28,%1) \n"
"mov.l @(40,%0),r0 \n"
"mov.l @(44,%0),r1 \n"
"mov.l r0,@(16,%1) \n"
"mov.l r1,@(20,%1) \n"
"mov.l @(48,%0),r0 \n"
"mov.l @(52,%0),r1 \n"
"mov.l r0,@(8,%1) \n"
"mov.l r1,@(12,%1) \n"
"mov.l @(56,%0),r0 \n"
"mov.l @(60,%0),r1 \n"
"mov.l r0,@%1 \n"
"mov.l r1,@(4,%1) \n"
: /* outputs */
: /* inputs */
/* %0 */ "r"(patpix[i][0]),
/* %1 */ "r"(patpix[i+2048][0]),
/* %2 */ "r"(1024*64)
: /* clobbers */
"r0", "r1"
);
#elif defined(CPU_COLDFIRE)
asm volatile (
"movem.l (%0),%%d0-%%d3 \n"
"move.l %%d0,%%d4 \n"
"move.l %%d1,%%d5 \n"
"movem.l %%d2-%%d5,(48,%1) \n"
"movem.l (16,%0),%%d0-%%d3 \n"
"move.l %%d0,%%d4 \n"
"move.l %%d1,%%d5 \n"
"movem.l %%d2-%%d5,(32,%1) \n"
"movem.l (32,%0),%%d0-%%d3 \n"
"move.l %%d0,%%d4 \n"
"move.l %%d1,%%d5 \n"
"movem.l %%d2-%%d5,(16,%1) \n"
"movem.l (48,%0),%%d0-%%d3 \n"
"move.l %%d0,%%d4 \n"
"move.l %%d1,%%d5 \n"
"movem.l %%d2-%%d5,(%1) \n"
"move.l %2,%%d0 \n"
"add.l %%d0,%0 \n"
"add.l %%d0,%1 \n"
"movem.l (%0),%%d0-%%d3 \n"
"move.l %%d0,%%d4 \n"
"move.l %%d1,%%d5 \n"
"movem.l %%d2-%%d5,(48,%1) \n"
"movem.l (16,%0),%%d0-%%d3 \n"
"move.l %%d0,%%d4 \n"
"move.l %%d1,%%d5 \n"
"movem.l %%d2-%%d5,(32,%1) \n"
"movem.l (32,%0),%%d0-%%d3 \n"
"move.l %%d0,%%d4 \n"
"move.l %%d1,%%d5 \n"
"movem.l %%d2-%%d5,(16,%1) \n"
"movem.l (48,%0),%%d0-%%d3 \n"
"move.l %%d0,%%d4 \n"
"move.l %%d1,%%d5 \n"
"movem.l %%d2-%%d5,(%1) \n"
: /* outputs */
: /* inputs */
/* %0 */ "a"(patpix[i][0]),
/* %1 */ "a"(patpix[i+2048][0]),
/* %2 */ "i"(1024*64)
: /* clobbers */
"d0", "d1", "d2", "d3", "d4", "d5"
);
#else
for (j = 0; j < 8; j++)
{
for (k = 0; k < 8; k++)
{
patpix[i+2048][j][k] =
patpix[i][7-j][k];
patpix[i+3072][j][k] =
patpix[i+1024][7-j][k];
}
}
#endif
}
anydirty = 0;
}
#endif /* ASM_UPDATEPATPIX */
static void tilebuf(void) ICODE_ATTR;
static void tilebuf(void)
{
int i, cnt;
int base;
byte *tilemap, *attrmap;
int *tilebuf;
const int *wrap;
static const int wraptable[64] ICONST_ATTR =
{
0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,-32
};
base = ((R_LCDC&0x08)?0x1C00:0x1800) + (T<<5) + S;
tilemap = lcd.vbank[0] + base;
attrmap = lcd.vbank[1] + base;
tilebuf = BG;
wrap = wraptable + S;
cnt = ((WX + 7) >> 3) + 1;
if (hw.cgb) {
if (R_LCDC & 0x10)
for (i = cnt; i > 0; i--)
{
*(tilebuf++) = *tilemap
| (((int)*attrmap & 0x08) << 6)
| (((int)*attrmap & 0x60) << 5);
*(tilebuf++) = (((int)*attrmap & 0x07) << 2);
attrmap += *wrap + 1;
tilemap += *(wrap++) + 1;
}
else
for (i = cnt; i > 0; i--)
{
*(tilebuf++) = (256 + ((n8)*tilemap))
| (((int)*attrmap & 0x08) << 6)
| (((int)*attrmap & 0x60) << 5);
*(tilebuf++) = (((int)*attrmap & 0x07) << 2);
attrmap += *wrap + 1;
tilemap += *(wrap++) + 1;
}
}
else
{
if (R_LCDC & 0x10)
for (i = cnt; i > 0; i--)
{
*(tilebuf++) = *(tilemap++);
tilemap += *(wrap++);
}
else
for (i = cnt; i > 0; i--)
{
*(tilebuf++) = (256 + ((n8)*(tilemap++)));
tilemap += *(wrap++);
}
}
if (WX >= 160) return;
base = ((R_LCDC&0x40)?0x1C00:0x1800) + (WT<<5);
tilemap = lcd.vbank[0] + base;
attrmap = lcd.vbank[1] + base;
tilebuf = WND;
cnt = ((160 - WX) >> 3) + 1;
if (hw.cgb)
{
if (R_LCDC & 0x10)
for (i = cnt; i > 0; i--)
{
*(tilebuf++) = *(tilemap++)
| (((int)*attrmap & 0x08) << 6)
| (((int)*attrmap & 0x60) << 5);
*(tilebuf++) = (((int)*(attrmap++)&7) << 2);
}
else
for (i = cnt; i > 0; i--)
{
*(tilebuf++) = (256 + ((n8)*(tilemap++)))
| (((int)*attrmap & 0x08) << 6)
| (((int)*attrmap & 0x60) << 5);
*(tilebuf++) = (((int)*(attrmap++)&7) << 2);
}
}
else
{
if (R_LCDC & 0x10)
for (i = cnt; i > 0; i--)
*(tilebuf++) = *(tilemap++);
else
for (i = cnt; i > 0; i--)
*(tilebuf++) = (256 + ((n8)*(tilemap++)));
}
}
/* V = vertical line
* WX = WND start (if 0, no need to do anything) -> WY
* U = start...something...thingy... 7 at most
*/
static void bg_scan(void) ICODE_ATTR;
static void bg_scan(void)
{
int cnt;
byte *src, *dest;
int *tile;
if (WX <= 0) return;
cnt = WX;
tile = BG;
dest = BUF;
src = patpix[*(tile++)][V] + U;
memcpy(dest, src, 8-U);
dest += 8-U;
cnt -= 8-U;
if (cnt <= 0) return;
while (cnt >= 8)
{
#if defined(CPU_COLDFIRE)
asm volatile (
"move.l (%1)+,(%0)+ \n"
"move.l (%1)+,(%0)+ \n"
: /*outputs*/
: /*inputs*/
/* %0 */ "a" (dest),
/* %1 */ "a" (patpix[*(tile++)][V])
//: /* clobbers */
);
#else
src = patpix[*(tile++)][V];
memcpy(dest,src,8);
dest += 8;
#endif
cnt -= 8;
}
src = patpix[*tile][V];
while (cnt--)
*(dest++) = *(src++);
}
static void wnd_scan(void) ICODE_ATTR;
static void wnd_scan(void)
{
int cnt;
byte *src, *dest;
int *tile;
if (WX >= 160) return;
cnt = 160 - WX;
tile = WND;
dest = BUF + WX;
while (cnt >= 8)
{
#if defined(CPU_COLDFIRE)
asm volatile (
"move.l (%1)+,(%0)+ \n"
"move.l (%1)+,(%0)+ \n"
: /*outputs*/
: /*inputs*/
/* %0 */ "a" (dest),
/* %1 */ "a" (patpix[*(tile++)][WV])
//: /* clobbers */
);
#else
src = patpix[*(tile++)][WV];
memcpy(dest,src,8);
dest += 8;
#endif
cnt -= 8;
}
src = patpix[*tile][WV];
while (cnt--)
*(dest++) = *(src++);
}
static void blendcpy(byte *dest, byte *src, byte b, int cnt)
{
while (cnt--) *(dest++) = *(src++) | b;
}
static int priused(void *attr)
{
un32 *a = attr;
return (int)((a[0]|a[1]|a[2]|a[3]|a[4]|a[5]|a[6]|a[7])&0x80808080);
}
static void bg_scan_pri(void) ICODE_ATTR;
static void bg_scan_pri(void)
{
int cnt, i;
byte *src, *dest;
if (WX <= 0) return;
i = S;
cnt = WX;
dest = PRI;
src = lcd.vbank[1] + ((R_LCDC&0x08)?0x1C00:0x1800) + (T<<5);
if (!priused(src))
{
memset(dest, 0, cnt);
return;
}
memset(dest, src[i++&31]&128, 8-U);
dest += 8-U;
cnt -= 8-U;
if (cnt <= 0) return;
while (cnt >= 8)
{
memset(dest, src[i++&31]&128, 8);
dest += 8;
cnt -= 8;
}
memset(dest, src[i&31]&128, cnt);
}
static void wnd_scan_pri(void) ICODE_ATTR;
static void wnd_scan_pri(void)
{
int cnt, i;
byte *src, *dest;
if (WX >= 160) return;
i = 0;
cnt = 160 - WX;
dest = PRI + WX;
src = lcd.vbank[1] + ((R_LCDC&0x40)?0x1C00:0x1800) + (WT<<5);
if (!priused(src))
{
memset(dest, 0, cnt);
return;
}
while (cnt >= 8)
{
memset(dest, src[i++]&128, 8);
dest += 8;
cnt -= 8;
}
memset(dest, src[i]&128, cnt);
}
static void bg_scan_color(void)
{
int cnt;
byte *src, *dest;
int *tile;
if (WX <= 0) return;
cnt = WX;
tile = BG;
dest = BUF;
src = patpix[*(tile++)][V] + U;
blendcpy(dest, src, *(tile++), 8-U);
dest += 8-U;
cnt -= 8-U;
if (cnt <= 0) return;
while (cnt >= 8)
{
src = patpix[*(tile++)][V];
#if defined(CPU_COLDFIRE)
asm volatile (
"move.l (%2)+,%%d1 \n"
"move.b %%d1,%%d2 \n"
"move.b (%1)+,%%d0 \n"
"or.l %%d2,%%d0 \n"
"move.b %%d0,(%0)+ \n"
"move.b (%1)+,%%d0 \n"
"or.l %%d1,%%d0 \n"
"move.b %%d0,(%0)+ \n"
"move.b (%1)+,%%d0 \n"
"or.l %%d2,%%d0 \n"
"move.b %%d0,(%0)+ \n"
"move.b (%1)+,%%d0 \n"
"or.l %%d2,%%d0 \n"
"move.b %%d0,(%0)+ \n"
"move.b (%1)+,%%d0 \n"
"or.l %%d2,%%d0 \n"
"move.b %%d0,(%0)+ \n"
"move.b (%1)+,%%d0 \n"
"or.l %%d2,%%d0 \n"
"move.b %%d0,(%0)+ \n"
"move.b (%1)+,%%d0 \n"
"or.l %%d2,%%d0 \n"
"move.b %%d0,(%0)+ \n"
"move.b (%1)+,%%d0 \n"
"or.l %%d2,%%d0 \n"
"move.b %%d0,(%0)+ \n"
: /*outputs*/
: /*inputs*/
/* %0 */ "a" (dest),
/* %1 */ "a" (src),
/* %2 */ "a" (tile)
: /* clobbers */
"d0", "d1", "d2"
);
#else
blendcpy(dest, src, *(tile++), 8);
dest += 8;
#endif
cnt -= 8;
}
src = patpix[*(tile++)][V];
blendcpy(dest, src, *(tile++), cnt);
}
static void wnd_scan_color(void)
{
int cnt;
byte *src, *dest;
int *tile;
if (WX >= 160) return;
cnt = 160 - WX;
tile = WND;
dest = BUF + WX;
while (cnt >= 8)
{
src = patpix[*(tile++)][WV];
blendcpy(dest, src, *(tile++), 8);
dest += 8;
cnt -= 8;
}
src = patpix[*(tile++)][WV];
blendcpy(dest, src, *(tile++), cnt);
}
static void spr_enum(void) ICODE_ATTR;
static void spr_enum(void)
{
int i, j;
struct obj *o;
struct vissprite ts;
int v, pat;
NS = 0;
if (!(R_LCDC & 0x02)) return;
o = lcd.oam.obj;
for (i = 40; i; i--, o++)
{
if (L >= o->y || L + 16 < o->y)
continue;
if (L + 8 >= o->y && !(R_LCDC & 0x04))
continue;
VS[NS].x = (int)o->x - 8;
v = L - (int)o->y + 16;
if (hw.cgb)
{
pat = o->pat | (((int)o->flags & 0x60) << 5)
| (((int)o->flags & 0x08) << 6);
VS[NS].pal = 32 + ((o->flags & 0x07) << 2);
}
else
{
pat = o->pat | (((int)o->flags & 0x60) << 5);
VS[NS].pal = 32 + ((o->flags & 0x10) >> 2);
}
VS[NS].pri = (o->flags & 0x80) >> 7;
if ((R_LCDC & 0x04))
{
pat &= ~1;
if (v >= 8)
{
v -= 8;
pat++;
}
if (o->flags & 0x40) pat ^= 1;
}
VS[NS].buf = patpix[pat][v];
if (++NS == 10) break;
}
if (hw.cgb) return;
for (i = 0; i < NS; i++)
{
for (j = i + 1; j < NS; j++)
{
if (VS[i].x > VS[j].x)
{
ts = VS[i];
VS[i] = VS[j];
VS[j] = ts;
}
}
}
}
static void spr_scan(void) ICODE_ATTR;
static void spr_scan(void)
{
int i;
byte ns = NS;
byte *src, *dest;
struct vissprite *vs;
static byte bgdup[256] IBSS_ATTR;
if (!ns) return;
memcpy(bgdup, BUF, 256);
vs = &VS[ns-1];
for (; ns; ns--, vs--)
{
int x = vs->x;
if (x > 159) continue;
if (x < -7) continue;
if (x < 0)
{
src = vs->buf - x;
dest = BUF;
i = 8 + x;
}
else
{
src = vs->buf;
dest = BUF + x;
if (x > 152) i = 160 - x;
else i = 8;
}
byte pal = vs->pal;
if (vs->pri)
{
byte *bg = bgdup + (dest - BUF);
while (i--)
{
byte b = src[i];
if (b && !(bg[i]&3)) dest[i] = pal|b;
}
}
else if (hw.cgb)
{
byte *bg = bgdup + (dest - BUF);
byte *pri = PRI + (dest - BUF);
while (i--)
{
byte b = src[i];
if (b && (!pri[i] || !(bg[i]&3)))
dest[i] = pal|b;
}
}
else while (i--) if (src[i]) dest[i] = pal|src[i];
}
}
/* Scaling defines */
#define DX ((LCD_WIDTH<<16) / 160)
#define DXI ((160<<16) / LCD_WIDTH)
#define DY ((LCD_HEIGHT<<16) / 144)
#define DYI ((144<<16) / LCD_HEIGHT)
#define DXR ((LCD_WIDTH<<16) / 144)
#define DXIR ((144<<16) / LCD_WIDTH)
#define DYR ((LCD_HEIGHT<<16) / 160)
#define DYIR ((160<<16) / LCD_HEIGHT)
void lcd_begin(void)
{
#if (LCD_WIDTH>=160) && (LCD_HEIGHT>=144)
#define S1 ((LCD_HEIGHT-144)/2)*LCD_WIDTH + ((LCD_WIDTH-160)/2)
#define S2 0
#define S1R ((LCD_HEIGHT-160)/2)*LCD_WIDTH + ((LCD_WIDTH-144)/2)+144
#define S2R (LCD_WIDTH-1)
#elif (LCD_WIDTH>=160) && (LCD_HEIGHT<=144)
#define S1 0
#define S2 0
#define S1R LCD_WIDTH-1
#define S2R LCD_WIDTH-1
#elif (LCD_WIDTH<=160) && (LCD_HEIGHT>=144)
#define S1 ((LCD_HEIGHT-144)/2)*LCD_WIDTH
#define S2 ((LCD_HEIGHT-144)/2)*LCD_WIDTH
#define S1R LCD_WIDTH-1
#define S2R LCD_WIDTH-1
#else
#define S1 0
#define S2 0
#define S1R LCD_WIDTH-1
#define S2R LCD_WIDTH-1
#endif
#if (LCD_WIDTH>LCD_HEIGHT)
#define S3 ((LCD_WIDTH-((160*DY)>>16))/2)
#define S3R LCD_WIDTH-1
#else
#define S3 ((LCD_HEIGHT-((144*DX)>>16))/2)*LCD_WIDTH
#define S3R ((LCD_HEIGHT-((160*DXR)>>16))/2)*LCD_WIDTH+LCD_WIDTH-1
#endif
vdest=rb->lcd_framebuffer;
#ifdef HAVE_LCD_COLOR
set_pal();
if(options.rotate)
{
if(options.scaling == 0)
vdest+=+S2R;
else if (options.scaling == 1)
vdest+=S3R;
else
vdest+=S1R;
}
else
{
if(options.scaling == 0)
vdest+=S2;
else if (options.scaling == 1)
vdest+=S3;
else
vdest+=S1;
}
#endif
WY = R_WY;
}
#ifdef HAVE_LCD_COLOR
int SCALEWL IDATA_ATTR=1<<16;
int SCALEWS IDATA_ATTR=1<<16;
int SCALEHL IDATA_ATTR=1<<16;
int SCALEHS IDATA_ATTR=1<<16;
int swidth IDATA_ATTR=160;
int sremain IDATA_ATTR=LCD_WIDTH-160;
#endif
void setvidmode(void)
{
#ifdef HAVE_LCD_COLOR
switch(options.scaling)
{
case 0:
if(options.rotate)
{
SCALEWL=DYR;
SCALEWS=DYIR;
SCALEHL=DXR;
SCALEHS=DXIR;
}
else
{
SCALEWL=DX;
SCALEWS=DXI;
SCALEHL=DY;
SCALEHS=DYI;
}
break;
case 1: /* Maintain Ratio */
if(options.rotate)
{
if (DYR<DXR)
{
SCALEWL=DYR;
SCALEWS=DYIR;
SCALEHL=DYR;
SCALEHS=DYIR;
}
else
{
SCALEWL=DXR;
SCALEWS=DXIR;
SCALEHL=DXR;
SCALEHS=DXIR;
}
}
else
{
if (DY<DX)
{
SCALEWL=DY;
SCALEWS=DYI;
SCALEHL=DY;
SCALEHS=DYI;
}
else
{
SCALEWL=DX;
SCALEWS=DXI;
SCALEHL=DX;
SCALEHS=DXI;
}
}
break;
default:
SCALEWL=1<<16;
SCALEWS=1<<16;
SCALEHL=1<<16;
SCALEHS=1<<16;
}
swidth=(160*SCALEWL)>>16;
if(options.rotate)
sremain=-(((160*SCALEWL)>>16)*LCD_WIDTH+1);
else
sremain=LCD_WIDTH-swidth;
#endif
}
void lcd_refreshline(void)
{
#ifdef HAVE_LCD_COLOR
char frameout[30];
#endif
if (!(R_LCDC & 0x80))
return; /* should not happen... */
#if (LCD_HEIGHT <= 128) && !defined(HAVE_LCD_COLOR)
if ( (fb.mode==0&&(R_LY >= 128)) ||
(fb.mode==1&&(R_LY < 16)) ||
(fb.mode==2&&(R_LY<8||R_LY>=136)) ||
(fb.mode==3&&((R_LY%9)==8))
#if LCD_HEIGHT == 64
|| (R_LY & 1) /* calculate only even lines */
#endif
)
return;
#endif
updatepatpix();
L = R_LY;
X = R_SCX;
Y = (R_SCY + L) & 0xff;
S = X >> 3;
T = Y >> 3;
U = X & 7;
V = Y & 7;
WX = R_WX - 7;
if (WY>L || WY<0 || WY>143 || WX<-7 || WX>159 || !(R_LCDC&0x20))
WX = 160;
WT = (L - WY) >> 3;
WV = (L - WY) & 7;
spr_enum();
tilebuf();
if (hw.cgb)
{
bg_scan_color();
wnd_scan_color();
if (NS)
{
bg_scan_pri();
wnd_scan_pri();
}
}
else
{
bg_scan();
wnd_scan();
}
spr_scan();
#if !defined(HAVE_LCD_COLOR)
#if LCD_DEPTH == 1
if (scanline_ind == 7)
#elif LCD_DEPTH == 2
if (scanline_ind == 3)
#endif
{
if(fb.mode!=3)
vid_update(L);
else
vid_update(L-((int)(L/9)));
#else
{
/* Universal Scaling pulled from PrBoom and modified for rockboy */
static int hpt IDATA_ATTR=0x8000;
while((hpt>>16)<L+1)
{
hpt+=SCALEHS;
register unsigned int srcpt=0x8000;
register unsigned int wcount=swidth;
register unsigned int remain=sremain;
while(wcount--)
{
*vdest = PAL[BUF[srcpt>>16]];
if (options.rotate)
vdest+=LCD_WIDTH;
else
vdest++;
srcpt+=SCALEWS;
}
vdest+=remain;
}
if(L==143)
{
if(options.showstats)
{
snprintf(frameout,sizeof(frameout),"FPS: %d Frameskip: %d ",options.fps, options.frameskip);
rb->lcd_putsxy(0,LCD_HEIGHT-10,frameout);
}
hpt=0x8000;
rb->lcd_update();
}
#endif
}
#if LCD_DEPTH == 1
scanline_ind = (scanline_ind+1) % 8;
#elif LCD_DEPTH == 2
scanline_ind = (scanline_ind+1) % 4;
#endif
}
#ifdef HAVE_LCD_COLOR
void set_pal(void)
{
memcpy(dmg_pal,palettes[options.pal], sizeof(dmg_pal));
pal_dirty();
}
static void updatepalette(int i)
{
int c, r, g, b;
c = (lcd.pal[i<<1] | ((int)lcd.pal[(i<<1)|1] << 8)) & 0x7FFF;
r = (c & 0x001F) << 3;
g = (c & 0x03E0) >> 2;
b = (c & 0x7C00) >> 7;
r |= (r >> 5);
g |= (g >> 5);
b |= (b >> 5);
r = (r >> fb.cc[0].r) << fb.cc[0].l;
g = (g >> fb.cc[1].r) << fb.cc[1].l;
b = (b >> fb.cc[2].r) << fb.cc[2].l;
#if LCD_PIXELFORMAT == RGB565
c = r|g|b;
#elif LCD_PIXELFORMAT == RGB565SWAPPED
c = swap16(r|g|b);
#endif
PAL[i] = c;
}
#endif /* HAVE_LCD_COLOR */
void pal_write(int i, byte b)
{
if (lcd.pal[i] == b) return;
lcd.pal[i] = b;
#ifdef HAVE_LCD_COLOR
updatepalette(i>>1);
#endif
}
void pal_write_dmg(int i, int mapnum, byte d)
{
int j;
int *cmap = dmg_pal[mapnum];
int c, r, g, b;
if (hw.cgb) return;
for (j = 0; j < 8; j += 2)
{
c = cmap[(d >> j) & 3];
r = (c & 0xf8) >> 3;
g = (c & 0xf800) >> 6;
b = (c & 0xf80000) >> 9;
c = r|g|b;
/* FIXME - handle directly without faking cgb */
pal_write(i+j, c & 0xff);
pal_write(i+j+1, c >> 8);
}
}
void vram_write(addr a, byte b)
{
lcd.vbank[R_VBK&1][a] = b;
if (a >= 0x1800) return;
patdirty[((R_VBK&1)<<9)+(a>>4)] = 1;
anydirty = 1;
}
void vram_dirty(void)
{
anydirty = 1;
memset(patdirty, 1, sizeof patdirty);
}
void pal_dirty(void)
{
#ifdef HAVE_LCD_COLOR
int i;
#endif
if (!hw.cgb)
{
pal_write_dmg(0, 0, R_BGP);
pal_write_dmg(8, 1, R_BGP);
pal_write_dmg(64, 2, R_OBP0);
pal_write_dmg(72, 3, R_OBP1);
}
#ifdef HAVE_LCD_COLOR
for (i = 0; i < 64; i++)
updatepalette(i);
#endif
}
void lcd_reset(void)
{
memset(&lcd, 0, sizeof lcd);
lcd_begin();
vram_dirty();
}
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