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ViRGE 2D blitter wraps X coordinates at 11 bits. Fixes missing text with some Windows drivers.

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This commit is contained in:
SarahW 2016-05-15 21:09:26 +01:00
commit 4024be8e52
1 changed files with 4 additions and 0 deletions
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4
src/vid_s3_virge.c
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@ -2038,7 +2038,9 @@ static void s3_virge_bitblt(virge_t *virge, int count, uint32_t cpu_dat)
}
virge->s3d.src_x += x_inc;
virge->s3d.src_x &= 0x7ff;
virge->s3d.dest_x += x_inc;
virge->s3d.dest_x &= 0x7ff;
if (!virge->s3d.w)
{
virge->s3d.src_x = virge->s3d.rsrc_x;
@ -2110,7 +2112,9 @@ static void s3_virge_bitblt(virge_t *virge, int count, uint32_t cpu_dat)
}
virge->s3d.src_x += x_inc;
virge->s3d.src_x &= 0x7ff;
virge->s3d.dest_x += x_inc;
virge->s3d.dest_x &= 0x7ff;
if (!virge->s3d.w)
{
virge->s3d.src_x = virge->s3d.rsrc_x;