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S3 YUV bufsel

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Jonathan Campbell
2021-04-12 23:49:58 -07:00
parent 8baa3f1751
commit 7c2b96dbf8
1 changed files with 2 additions and 1 deletions
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3
src/hardware/vga_draw.cpp
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@@ -3308,11 +3308,12 @@ static void VGA_VerticalTimer(Bitu /*val*/) {
* using the color key feature to key against bright magenta, and the Windows
* desktop usually doesn't have that color). */
if (vga.s3.streams.sswnd_height != 0 && vga.s3.streams.sswnd_start_x != 0 && vga.s3.streams.sswnd_start_y != 0 && vga.s3.streams.fifo_alloc_ss != 0) {
unsigned int ssbuf = (vga.s3.streams.ss_bufsel == 1) ? 1 : 0;
S3SSdraw.startx = vga.s3.streams.sswnd_start_x-1; /* X coordinate written is X + 1 */
S3SSdraw.starty = vga.s3.streams.sswnd_start_y-1; /* Y coordinate written is Y + 1 */
S3SSdraw.endx = (vga.s3.streams.sswnd_start_x-1)+vga.s3.streams.sswnd_width+1; /* register is width - 1 */
S3SSdraw.endy = (vga.s3.streams.sswnd_start_y-1)+vga.s3.streams.sswnd_height; /* height is written as-is */
S3SSdraw.vmem_addr = vga.s3.streams.ss_fba[0] & ~7u; /* "must be quadword aligned" */
S3SSdraw.vmem_addr = vga.s3.streams.ss_fba[ssbuf] & ~7u; /* "must be quadword aligned" */
S3SSdraw.stride = vga.s3.streams.ss_stride; /* datasheet doesn't say anything about alignment requirements here */
S3SSdraw.pixfmt = vga.s3.streams.ssctl_sdif;
S3SSdraw.filter = vga.s3.streams.ssctl_sfc;