Cirrus: Fixed redraw issue caused by misaligned bitblt region.

If x0 + width exceeds the screen width, mark tile(s) on the left side of the screen, too. This should finally fix issue #221.
bochs-emu · Jan 17, 2024 · 6770a35 · 6770a35
1 parent c66d6f1
commit 6770a35
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/bochs/iodev/display/svga_cirrus.cc b/bochs/iodev/display/svga_cirrus.cc
@@ -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);