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Fixed ViRGE cursor colour handling.

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This commit is contained in:
SarahW 2018-03-21 21:53:04 +00:00
commit 977b798eda
1 changed files with 56 additions and 14 deletions
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70
src/vid_s3_virge.c
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@ -140,8 +140,8 @@ typedef struct virge_t
event_t *wake_main_thread;
event_t *not_full_event;
uint32_t hwcursor_col[2];
int hwcursor_col_pos;
uint32_t hwc_fg_col, hwc_bg_col;
int hwc_col_stack_pos;
struct
{
@ -410,16 +410,34 @@ static void s3_virge_out(uint16_t addr, uint8_t val, void *p)
break;
case 0x4a:
virge->hwcursor_col[1] = (virge->hwcursor_col[1] & ~(0xff << (virge->hwcursor_col_pos * 8))) |
(val << (virge->hwcursor_col_pos * 8));
virge->hwcursor_col_pos++;
virge->hwcursor_col_pos &= 3;
switch (virge->hwc_col_stack_pos)
{
case 0:
virge->hwc_fg_col = (virge->hwc_fg_col & 0xffff00) | val;
break;
case 1:
virge->hwc_fg_col = (virge->hwc_fg_col & 0xff00ff) | (val << 8);
break;
case 2:
virge->hwc_fg_col = (virge->hwc_fg_col & 0x00ffff) | (val << 16);
break;
}
virge->hwc_col_stack_pos = (virge->hwc_col_stack_pos + 1) & 3;
break;
case 0x4b:
virge->hwcursor_col[0] = (virge->hwcursor_col[0] & ~(0xff << (virge->hwcursor_col_pos * 8))) |
(val << (virge->hwcursor_col_pos * 8));
virge->hwcursor_col_pos++;
virge->hwcursor_col_pos &= 3;
switch (virge->hwc_col_stack_pos)
{
case 0:
virge->hwc_bg_col = (virge->hwc_bg_col & 0xffff00) | val;
break;
case 1:
virge->hwc_bg_col = (virge->hwc_bg_col & 0xff00ff) | (val << 8);
break;
case 2:
virge->hwc_bg_col = (virge->hwc_bg_col & 0x00ffff) | (val << 16);
break;
}
virge->hwc_col_stack_pos = (virge->hwc_col_stack_pos + 1) & 3;
break;
case 0x53:
@ -498,7 +516,7 @@ static uint8_t s3_virge_in(uint16_t addr, void *p)
case 0x31: ret = (svga->crtc[0x31] & 0xcf) | ((virge->ma_ext & 3) << 4); break;
case 0x35: ret = (svga->crtc[0x35] & 0xf0) | (virge->bank & 0xf); break;
case 0x36: ret = (svga->crtc[0x36] & 0xfc) | 2; break; /*PCI bus*/
case 0x45: virge->hwcursor_col_pos = 0; ret = svga->crtc[0x45]; break;
case 0x45: virge->hwc_col_stack_pos = 0; ret = svga->crtc[0x45]; break;
case 0x51: ret = (svga->crtc[0x51] & 0xf0) | ((virge->bank >> 2) & 0xc) | ((virge->ma_ext >> 2) & 3); break;
case 0x69: ret = virge->ma_ext; break;
case 0x6a: ret = virge->bank; break;
@ -3359,8 +3377,32 @@ static void s3_virge_hwcursor_draw(svga_t *svga, int displine)
uint16_t dat[2];
int xx;
int offset = svga->hwcursor_latch.x - svga->hwcursor_latch.xoff;
uint32_t fg, bg;
// pclog("HWcursor %i %i\n", svga->hwcursor_latch.x, svga->hwcursor_latch.y);
// pclog("HWcursor %i %i %08x %08x\n", svga->hwcursor_latch.x, svga->hwcursor_latch.y, virge->hwcursor_col[0],virge->hwcursor_col[1]);
switch (svga->bpp)
{
case 15:
fg = video_15to32[virge->hwc_fg_col & 0xffff];
bg = video_15to32[virge->hwc_bg_col & 0xffff];
break;
case 16:
fg = video_16to32[virge->hwc_fg_col & 0xffff];
bg = video_16to32[virge->hwc_bg_col & 0xffff];
break;
case 24: case 32:
fg = virge->hwc_fg_col;
bg = virge->hwc_bg_col;
break;
default:
fg = svga->pallook[virge->hwc_fg_col & 0xff];
bg = svga->pallook[virge->hwc_bg_col & 0xff];
break;
}
for (x = 0; x < 64; x += 16)
{
dat[0] = (svga->vram[svga->hwcursor_latch.addr] << 8) | svga->vram[svga->hwcursor_latch.addr + 1];
@ -3373,7 +3415,7 @@ static void s3_virge_hwcursor_draw(svga_t *svga, int displine)
if (offset >= svga->hwcursor_latch.x)
{
if (dat[0] & 0x8000)
((uint32_t *)buffer32->line[displine])[offset + 32] = virge->hwcursor_col[dat[1] >> 15];
((uint32_t *)buffer32->line[displine])[offset + 32] = (dat[1] & 0x8000) ? fg : bg;
}
offset++;
@ -3389,7 +3431,7 @@ static void s3_virge_hwcursor_draw(svga_t *svga, int displine)
if (offset >= svga->hwcursor_latch.x)
{
if (!(dat[0] & 0x8000))
((uint32_t *)buffer32->line[displine])[offset + 32] = virge->hwcursor_col[dat[1] >> 15];
((uint32_t *)buffer32->line[displine])[offset + 32] = (dat[1] & 0x8000) ? fg : bg;
else if (dat[1] & 0x8000)
((uint32_t *)buffer32->line[displine])[offset + 32] ^= 0xffffff;
// pclog("Plot %i, %i (%i %i) %04X %04X\n", offset, displine, x+xx, svga->hwcursor_on, dat[0], dat[1]);