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S3 ViRGE: Respect blend control compose modes on pre-GX2 ViRGE

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Fixes video overlay staying on-screen on Linux.
This commit is contained in:
Cacodemon345
2024-02-23 14:27:26 +06:00
committed by GitHub
parent b55c7b91dd
commit a893aba1ca
1 changed files with 5 additions and 0 deletions
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5
src/video/vid_s3_virge.c
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@@ -918,6 +918,10 @@ s3_virge_recalctimings(svga_t *svga)
svga->overlay.v_acc = virge->streams.dda_vert_accumulator;
svga->rowoffset = virge->streams.pri_stride >> 3;
if (virge->chip <= S3_VIRGEDX && svga->overlay.ena) {
svga->overlay.ena = (((virge->streams.blend_ctrl >> 24) & 7) == 0b000) || (((virge->streams.blend_ctrl >> 24) & 7) == 0b101);
}
switch ((virge->streams.pri_ctrl >> 24) & 0x7) {
case 0: /*RGB-8 (CLUT)*/
svga->render = svga_render_8bpp_highres;
@@ -1963,6 +1967,7 @@ s3_virge_mmio_write_l(uint32_t addr, uint32_t val, void *priv)
break;
case 0x81a0:
virge->streams.blend_ctrl = val;
svga_recalctimings(svga);
break;
case 0x81c0:
virge->streams.pri_fb0 = val & 0x7fffff;