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Merge pull request #4181 from Cacodemon345/chips_69000_black_cursor_64x64_fix

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C&T 69000: Fix black cursor on Red Hat Linux 8
This commit is contained in:
Miran Grča
2024-02-20 20:45:42 +01:00
committed by GitHub
parent 49b7c6140c 80adef5ee6
commit 3f65aedc58
1 changed files with 42 additions and 23 deletions
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53
src/video/vid_chips_69000.c
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@@ -2287,6 +2287,35 @@ chips_69000_vblank_start(svga_t *svga)
chips_69000_interrupt(chips);
}
static void
chips_69000_hwcursor_draw_64x64(svga_t *svga, int displine)
{
chips_69000_t *chips = (chips_69000_t *) svga->priv;
uint64_t dat[2];
int offset = svga->hwcursor_latch.x - svga->hwcursor_latch.xoff;
if (svga->interlace && svga->hwcursor_oddeven)
svga->hwcursor_latch.addr += 16;
dat[1] = bswap64(*(uint64_t *) (&svga->vram[svga->hwcursor_latch.addr]));
dat[0] = bswap64(*(uint64_t *) (&svga->vram[svga->hwcursor_latch.addr + 8]));
svga->hwcursor_latch.addr += 16;
for (uint8_t x = 0; x < 64; x++) {
if (!(dat[1] & (1ULL << 63)))
svga->monitor->target_buffer->line[displine][(offset + svga->x_add) & 2047] = (dat[0] & (1ULL << 63)) ? svga_lookup_lut_ram(svga, chips->cursor_pallook[5]) : svga_lookup_lut_ram(svga, chips->cursor_pallook[4]);
else if (dat[0] & (1ULL << 63))
svga->monitor->target_buffer->line[displine][(offset + svga->x_add) & 2047] ^= 0xffffff;
offset++;
dat[0] <<= 1;
dat[1] <<= 1;
}
if (svga->interlace && !svga->hwcursor_oddeven)
svga->hwcursor_latch.addr += 16;
}
static void
chips_69000_hwcursor_draw(svga_t *svga, int displine)
{
@@ -2294,7 +2323,10 @@ chips_69000_hwcursor_draw(svga_t *svga, int displine)
uint64_t dat[2];
int offset = svga->hwcursor_latch.x - svga->hwcursor_latch.xoff;
if (svga->interlace && (chips->ext_regs[0xa0] & 7) == 0b1) {
if ((chips->ext_regs[0xa0] & 7) == 0b101)
return chips_69000_hwcursor_draw_64x64(svga, displine);
if (svga->interlace) {
dat[1] = bswap64(*(uint64_t *) (&svga->vram[svga->hwcursor_latch.addr]));
dat[0] = bswap64(*(uint64_t *) (&svga->vram[svga->hwcursor_latch.addr + 8]));
svga->hwcursor_latch.addr += 16;
@@ -2315,10 +2347,7 @@ chips_69000_hwcursor_draw(svga_t *svga, int displine)
return;
}
if (svga->interlace && svga->hwcursor_oddeven)
svga->hwcursor_latch.addr += 16;
if ((svga->hwcursor_on & 1) && (chips->ext_regs[0xa0] & 7) == 0b1) {
if ((svga->hwcursor_on & 1)) {
dat[1] = bswap64(*(uint64_t *) (&svga->vram[svga->hwcursor_latch.addr - 16]));
dat[0] = bswap64(*(uint64_t *) (&svga->vram[(svga->hwcursor_latch.addr - 16) + 8]));
dat[1] <<= 32ULL;
@@ -2329,10 +2358,8 @@ chips_69000_hwcursor_draw(svga_t *svga, int displine)
dat[0] = bswap64(*(uint64_t *) (&svga->vram[svga->hwcursor_latch.addr + 8]));
svga->hwcursor_latch.addr += 16;
}
switch (chips->ext_regs[0xa0] & 7) {
case 0b1:
case 0b101:
for (uint8_t x = 0; x < (((chips->ext_regs[0xa0] & 7) == 0b1) ? 32 : 64); x++) {
for (uint8_t x = 0; x < 32; x++) {
if (!(dat[1] & (1ULL << 63)))
svga->monitor->target_buffer->line[displine & 2047][(offset + svga->x_add) & 2047] = (dat[0] & (1ULL << 63)) ? svga_lookup_lut_ram(svga, chips->cursor_pallook[5]) : svga_lookup_lut_ram(svga, chips->cursor_pallook[4]);
else if (dat[0] & (1ULL << 63))
@@ -2342,14 +2369,6 @@ chips_69000_hwcursor_draw(svga_t *svga, int displine)
dat[0] <<= 1;
dat[1] <<= 1;
}
break;
default:
break;
}
if (svga->interlace && !svga->hwcursor_oddeven)
svga->hwcursor_latch.addr += 16;
}
static float