Retro/pcem
Watch
1
0
Fork
You've already forked pcem
 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Mach64 fixes :

Browse source 
- Added support for 8-bit RAMDAC mode
- Added ABGR8888 mode
- Add support for mono blitter source
- Identify RAMDAC type correctly
- Use correct colours for hardware cursor
Fixes issues in Corel Linux.
This commit is contained in:
SarahW 2016-05-08 20:41:51 +01:00
commit b39eb20237
7 changed files with 164 additions and 24 deletions
Download patch file Download diff file Expand all files Collapse all files

31
src/vid_svga.c
View file

@ -142,18 +142,21 @@ void svga_out(uint16_t addr, uint8_t val, void *p)
switch (svga->dac_pos)
{
case 0:
svga->dac_r = val & 63;
svga->dac_r = val;
svga->dac_pos++;
break;
case 1:
svga->dac_g = val & 63;
svga->dac_g = val;
svga->dac_pos++;
break;
case 2:
svga->vgapal[svga->dac_write].r = svga->dac_r;
svga->vgapal[svga->dac_write].g = svga->dac_g;
svga->vgapal[svga->dac_write].b = val & 63;
svga->pallook[svga->dac_write] = makecol32(svga->vgapal[svga->dac_write].r * 4, svga->vgapal[svga->dac_write].g * 4, svga->vgapal[svga->dac_write].b * 4);
svga->vgapal[svga->dac_write].b = val;
if (svga->ramdac_type == RAMDAC_8BIT)
svga->pallook[svga->dac_write] = makecol32(svga->vgapal[svga->dac_write].r, svga->vgapal[svga->dac_write].g, svga->vgapal[svga->dac_write].b);
else
svga->pallook[svga->dac_write] = makecol32((svga->vgapal[svga->dac_write].r & 0x3f) * 4, (svga->vgapal[svga->dac_write].g & 0x3f) * 4, (svga->vgapal[svga->dac_write].b & 0x3f) * 4);
svga->dac_pos = 0;
svga->dac_write = (svga->dac_write + 1) & 255;
break;
@ -267,6 +270,24 @@ uint8_t svga_in(uint16_t addr, void *p)
return 0xFF;
}
void svga_set_ramdac_type(svga_t *svga, int type)
{
int c;
if (svga->ramdac_type != type)
{
svga->ramdac_type = type;
for (c = 0; c < 256; c++)
{
if (svga->ramdac_type == RAMDAC_8BIT)
svga->pallook[c] = makecol32(svga->vgapal[c].r, svga->vgapal[c].g, svga->vgapal[c].b);
else
svga->pallook[c] = makecol32((svga->vgapal[c].r & 0x3f) * 4, (svga->vgapal[c].g & 0x3f) * 4, (svga->vgapal[c].b & 0x3f) * 4);
}
}
}
void svga_recalctimings(svga_t *svga)
{
double crtcconst;
@ -719,6 +740,8 @@ int svga_init(svga_t *svga, void *p, int memsize,
svga_pri = svga;
svga->ramdac_type = RAMDAC_6BIT;
return 0;
}