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Apply blanking extensions to more SVGA cards.

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* Fix duplicated logic in vid_svga.c
* Voodoo 3/Banshee emulation now has blanking extensions applied
* S3 ViRGE and Matrox video cards as well
* Tseng ET4000-series cards as well
* Fix off-by-one error in vid_cl54xx.c

Trident cards are yet to be investigated. XGA and 8514/A are yet to be made blanking extensions compliant. Mach64, Paradise/WDC and OAK OTI cards remain as-is for now.
This commit is contained in:
Cacodemon345
2024-01-11 01:48:49 +06:00
parent d125caf776
commit 8e9a2e0b79
8 changed files with 44 additions and 9 deletions
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2
src/video/vid_svga.c
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@@ -738,7 +738,6 @@ svga_recalctimings(svga_t *svga)
} else
svga->monitor->mon_overscan_x = 16;
svga->htotal = svga->crtc[0];
svga->hblankstart = svga->crtc[4] + 1;
svga->hblank_end_val = (svga->crtc[3] & 0x1f) | ((svga->crtc[5] & 0x80) ? 0x20 : 0x00);
#if 0
@@ -767,7 +766,6 @@ svga_recalctimings(svga_t *svga)
if (xga_active && (svga->xga != NULL))
xga_recalctimings(svga);
svga->htotal += 6; /*+6 is required for Tyrian*/
svga->hblankend = (svga->hblankstart & ~(svga->hblank_end_len - 1)) | svga->hblank_end_val;
if (svga->hblankend <= svga->hblankstart)
svga->hblankend += svga->hblank_end_len;