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Add support for 64x64 cursors to Cirrus Logic cards (used by OS/2 Warp).

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This commit is contained in:
SarahW 2019-05-16 22:05:18 +01:00
commit e2c7bf02ab
1 changed files with 52 additions and 17 deletions
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69
src/vid_cl5429.c
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@ -126,10 +126,17 @@ void gd5429_out(uint16_t addr, uint8_t val, void *p)
svga->hwcursor.ena = val & 1;
svga->hwcursor.ysize = (val & 4) ? 64 : 32;
svga->hwcursor.yoff = 0;
if (svga->hwcursor.ysize == 64)
svga->hwcursor.addr = (0x3fc000 + ((svga->seqregs[0x13] & 0x3c) * 256)) & svga->vram_mask;
else
svga->hwcursor.addr = (0x3fc000 + ((svga->seqregs[0x13] & 0x3f) * 256)) & svga->vram_mask;
// pclog("svga->hwcursor.ena = %i\n", svga->hwcursor.ena);
break;
case 0x13:
svga->hwcursor.addr = (0x3fc000 + ((val & 0x3f) * 256)) & svga->vram_mask;
if (svga->hwcursor.ysize == 64)
svga->hwcursor.addr = (0x3fc000 + ((val & 0x3c) * 256)) & svga->vram_mask;
else
svga->hwcursor.addr = (0x3fc000 + ((val & 0x3f) * 256)) & svga->vram_mask;
// pclog("svga->hwcursor.addr = %x\n", svga->hwcursor.addr);
break;
@ -577,33 +584,61 @@ void gd5429_hwcursor_draw(svga_t *svga, int displine)
uint8_t dat[2];
int xx;
int offset = svga->hwcursor_latch.x - svga->hwcursor_latch.xoff;
int line_offset = (svga->seqregs[0x12] & 0x04) ? 16 : 4;
if (svga->interlace && svga->hwcursor_oddeven)
svga->hwcursor_latch.addr += 4;
svga->hwcursor_latch.addr += line_offset;
for (x = 0; x < 32; x += 8)
if (svga->seqregs[0x12] & 0x04)
{
dat[0] = svga->vram[svga->hwcursor_latch.addr];
dat[1] = svga->vram[svga->hwcursor_latch.addr + 0x80];
for (xx = 0; xx < 8; xx++)
for (x = 0; x < 64; x += 8)
{
if (offset >= svga->hwcursor_latch.x)
dat[0] = svga->vram[svga->hwcursor_latch.addr];
dat[1] = svga->vram[svga->hwcursor_latch.addr + 8];
for (xx = 0; xx < 8; xx++)
{
if (dat[1] & 0x80)
((uint32_t *)buffer32->line[displine])[offset + 32] = 0;
if (dat[0] & 0x80)
((uint32_t *)buffer32->line[displine])[offset + 32] ^= 0xffffff;
}
if (offset >= svga->hwcursor_latch.x)
{
if (dat[1] & 0x80)
((uint32_t *)buffer32->line[displine])[offset + 32] = 0;
if (dat[0] & 0x80)
((uint32_t *)buffer32->line[displine])[offset + 32] ^= 0xffffff;
}
offset++;
dat[0] <<= 1;
dat[1] <<= 1;
offset++;
dat[0] <<= 1;
dat[1] <<= 1;
}
svga->hwcursor_latch.addr++;
}
svga->hwcursor_latch.addr += 8;
}
else
{
for (x = 0; x < 32; x += 8)
{
dat[0] = svga->vram[svga->hwcursor_latch.addr];
dat[1] = svga->vram[svga->hwcursor_latch.addr + 0x80];
for (xx = 0; xx < 8; xx++)
{
if (offset >= svga->hwcursor_latch.x)
{
if (dat[1] & 0x80)
((uint32_t *)buffer32->line[displine])[offset + 32] = 0;
if (dat[0] & 0x80)
((uint32_t *)buffer32->line[displine])[offset + 32] ^= 0xffffff;
}
offset++;
dat[0] <<= 1;
dat[1] <<= 1;
}
svga->hwcursor_latch.addr++;
}
svga->hwcursor_latch.addr++;
}
if (svga->interlace && !svga->hwcursor_oddeven)
svga->hwcursor_latch.addr += 4;
svga->hwcursor_latch.addr += line_offset;
}