RaySollium99/picodrive
1
0
Fork 0
mirror of https://github.com/RaySollium99/picodrive.git synced 2025-09-05 15:27:46 -04:00
Code Issues Projects Releases Packages Wiki Activity Actions

32x: mode2 draw, debug, poll detection

Browse source 
git-svn-id: file:///home/notaz/opt/svn/PicoDrive@783 be3aeb3a-fb24-0410-a615-afba39da0efa
This commit is contained in:
notaz 2009-09-18 12:06:42 +00:00
parent acd35d4c08
commit 266c6afa84
9 changed files with 161 additions and 10 deletions
Download patch file Download diff file Expand all files Collapse all files

30
pico/32x/draw.c
View file

@ -27,7 +27,8 @@ void FinalizeLine32xRGB555(int sh, int line)
unsigned short *pd = DrawLineDest;
unsigned short *pal = Pico32xMem->pal_native;
unsigned char *pb = HighCol + 8;
unsigned short cram0;
unsigned short *dram, *ps, cram0;
int i;
// this is a bit hackish:
// we swap cram color 0 with color that is used for background,
@ -44,14 +45,30 @@ void FinalizeLine32xRGB555(int sh, int line)
if (!(PicoDrawMask & PDRAW_32X_ON))
return;
dram = (void *)Pico32xMem->dram[Pico32x.vdp_regs[0x0a/2] & P32XV_FS];
ps = dram + dram[line];
if ((Pico32x.vdp_regs[0] & P32XV_Mx) == 2) { // Direct Color Mode
int inv = (Pico32x.vdp_regs[0] & P32XV_PRI) ? 0x8000 : 0;
unsigned int m1 = 0x001f001f;
unsigned int m2 = 0x03e003e0;
unsigned int m3 = 0xfc00fc00;
for (i = 320; i > 0; i--, ps++, pd++, pb++) {
unsigned short t = *ps;
if (*pb != 0 && !((t ^ inv) & 0x8000))
continue;
*pd = ((t & m1) << 11) | ((t & m2) << 1) | ((t & m3) >> 10);
}
return;
}
if (Pico32x.dirty_pal)
convert_pal555(Pico32x.vdp_regs[0] & P32XV_PRI);
if ((Pico32x.vdp_regs[0] & P32XV_Mx) == 1) {
unsigned short *dram = (void *)Pico32xMem->dram[Pico32x.vdp_regs[0x0a/2] & P32XV_FS];
unsigned short *ps = dram + dram[line];
if ((Pico32x.vdp_regs[0] & P32XV_Mx) == 1) { // Packed Pixel Mode
unsigned short t;
int i;
for (i = 320/2; i > 0; i--, ps++, pd += 2, pb += 2) {
t = pal[*ps >> 8];
if (pb[0] == 0 || (t & 0x20))
@ -61,5 +78,8 @@ void FinalizeLine32xRGB555(int sh, int line)
pd[1] = t;
}
}
else { // Run Length Mode
}
}