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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
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55
src/vid_ati68860_ramdac.c
View file

@ -46,6 +46,37 @@ void ati68860_ramdac_out(uint16_t addr, uint8_t val, ati68860_ramdac_t *ramdac,
ramdac->regs[addr & 0xf] = val;
switch (addr & 0xf)
{
case 0x4:
ramdac->dac_write = val;
ramdac->dac_pos = 0;
break;
case 0x5:
switch (ramdac->dac_pos)
{
case 0:
ramdac->dac_r = val;
ramdac->dac_pos++;
break;
case 1:
ramdac->dac_g = val;
ramdac->dac_pos++;
break;
case 2:
if (ramdac->dac_write > 1)
break;
ramdac->pal[ramdac->dac_write].r = ramdac->dac_r;
ramdac->pal[ramdac->dac_write].g = ramdac->dac_g;
ramdac->pal[ramdac->dac_write].b = val;
if (ramdac->ramdac_type == RAMDAC_8BIT)
ramdac->pallook[ramdac->dac_write] = makecol32(ramdac->pal[ramdac->dac_write].r, ramdac->pal[ramdac->dac_write].g, ramdac->pal[ramdac->dac_write].b);
else
ramdac->pallook[ramdac->dac_write] = makecol32((ramdac->pal[ramdac->dac_write].r & 0x3f) * 4, (ramdac->pal[ramdac->dac_write].g & 0x3f) * 4, (ramdac->pal[ramdac->dac_write].b & 0x3f) * 4);
ramdac->dac_pos = 0;
ramdac->dac_write = (ramdac->dac_write + 1) & 255;
break;
}
break;
case 0xb:
switch (val)
{
@ -67,6 +98,9 @@ void ati68860_ramdac_out(uint16_t addr, uint8_t val, ati68860_ramdac_t *ramdac,
case 0xe2: case 0xf7:
ramdac->render = svga_render_32bpp_highres;
break;
case 0xe3:
ramdac->render = svga_render_ABGR8888_highres;
break;
case 0xf2:
ramdac->render = svga_render_RGBA8888_highres;
break;
@ -75,6 +109,9 @@ void ati68860_ramdac_out(uint16_t addr, uint8_t val, ati68860_ramdac_t *ramdac,
break;
}
break;
case 0xc:
svga_set_ramdac_type(svga, (val & 1) ? RAMDAC_6BIT : RAMDAC_8BIT);
break;
}
break;
}
@ -119,3 +156,21 @@ void ati68860_ramdac_init(ati68860_ramdac_t *ramdac)
{
ramdac->render = svga_render_8bpp_highres;
}
void ati68860_set_ramdac_type(ati68860_ramdac_t *ramdac, int type)
{
int c;
if (ramdac->ramdac_type != type)
{
ramdac->ramdac_type = type;
for (c = 0; c < 2; c++)
{
if (ramdac->ramdac_type == RAMDAC_8BIT)
ramdac->pallook[c] = makecol32(ramdac->pal[c].r, ramdac->pal[c].g, ramdac->pal[c].b);
else
ramdac->pallook[c] = makecol32((ramdac->pal[c].r & 0x3f) * 4, (ramdac->pal[c].g & 0x3f) * 4, (ramdac->pal[c].b & 0x3f) * 4);
}
}
}