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Cirrus: Fixed redraw issue caused by misaligned bitblt region.

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If x0 + width exceeds the screen width, mark tile(s) on the left side of the screen, too.
This should finally fix issue #221.
This commit is contained in:
Volker Ruppert 2024-01-17 22:12:30 +01:00
parent c66d6f1a0e
commit 6770a355ae
1 changed files with 3 additions and 0 deletions
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bochs/iodev/display/svga_cirrus.cc
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@ -451,6 +451,9 @@ void bx_svga_cirrus_c::redraw_area(unsigned x0, unsigned y0, unsigned width,
} else {
yt1 = (BX_CIRRUS_THIS svga_yres - 1) / Y_TILESIZE;
}
if ((x0 + width) > svga_xres) {
BX_CIRRUS_THIS redraw_area(0, y0 + 1, width, height);
}
for (yti=yt0; yti<=yt1; yti++) {
for (xti=xt0; xti<=xt1; xti++) {
SET_TILE_UPDATED(BX_CIRRUS_THIS, xti, yti, 1);