Changeset 82205 in vbox

Timestamp:

Nov 25, 2019 10:40:21 PM (5 years ago)

Author:

vboxsync

svn:sync-xref-src-repo-rev:

135019

Message:

VGABIOS: Fixed scrolling down in graphics modes.

File:

• trunk/src/VBox/Devices/Graphics/BIOS/vgabios.c (modified) (4 diffs)

trunk/src/VBox/Devices/Graphics/BIOS/vgabios.c

@@ -944 +944 @@
  src=((ysrc*cheight*nbcols)>>1)+xstart;
  dest=((ydest*cheight*nbcols)>>1)+xstart;
- for(i=0;i<cheight;i++)
-  {
-   if (i & 1)
-     memcpyb(0xb800,0x2000+dest+(i>>1)*nbcols,0xb800,0x2000+src+(i>>1)*nbcols,cols);
-   else
-     memcpyb(0xb800,dest+(i>>1)*nbcols,0xb800,src+(i>>1)*nbcols,cols);
+ for(i=0;i<cheight/2;i++)
+  {
+   memcpyb(0xb800,dest+i*nbcols,0xb800,src+i*nbcols,cols);
+   memcpyb(0xb800,0x2000+dest+i*nbcols,0xb800,0x2000+src+i*nbcols,cols);
   }
 }
@@ -961 +959 @@
 
  dest=((ystart*cheight*nbcols)>>1)+xstart;
- for(i=0;i<cheight;i++)
-  {
-   if (i & 1)
-     memsetb(0xb800,0x2000+dest+(i>>1)*nbcols,attr,cols);
-   else
-     memsetb(0xb800,dest+(i>>1)*nbcols,attr,cols);
+ for(i=0;i<cheight/2;i++)
+  {
+   memsetb(0xb800,dest+i*nbcols,attr,cols);
+   memsetb(0xb800,0x2000+dest+i*nbcols,attr,cols);
   }
 }
@@ -1067 +1063 @@
               vgamem_fill_pl4(cul,i,cols,nbcols,cheight,attr);
              else
-              vgamem_copy_pl4(cul,i,i-nblines,cols,nbcols,cheight);
+              vgamem_copy_pl4(cul,i-nblines,i,cols,nbcols,cheight);
              if (i>rlr) break;
             }
@@ -1103 +1099 @@
               vgamem_fill_cga(cul,i,cols,nbcols,cheight,attr);
              else
-              vgamem_copy_cga(cul,i,i-nblines,cols,nbcols,cheight);
+              vgamem_copy_cga(cul,i-nblines,i,cols,nbcols,cheight);
              if (i>rlr) break;
             }