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Add patch 1302908 from vasyl. Fixes vectorballs in unreal demo

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Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@2325
This commit is contained in:
Peter Veenstra 2005-09-28 09:23:07 +00:00
parent 583cfcae5d
commit 190e5aa920
1 changed files with 6 additions and 2 deletions
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8
src/hardware/vga_draw.cpp
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@ -35,7 +35,9 @@ static Bit8u * VGA_Draw_1BPP_Line(Bitu vidstart,Bitu panning,Bitu line) {
line*=8*1024;Bit32u * draw=(Bit32u *)TempLine;
for (Bitu x=vga.draw.blocks;x>0;x--) {
Bitu val=vga.mem.linear[vidstart+line];
vidstart=(vidstart+1)&0x1dfff;
vidstart++;
if((vga.crtc.mode_control & 0x01) == 0) // CGA compatible addressing
vidstart &= 0x1dfff;
*draw++=CGA_2_Table[val >> 4];
*draw++=CGA_2_Table[val & 0xf];
}
@ -46,7 +48,9 @@ static Bit8u * VGA_Draw_2BPP_Line(Bitu vidstart,Bitu panning,Bitu line) {
line*=8*1024;Bit32u * draw=(Bit32u *)TempLine;
for (Bitu x=0;x<vga.draw.blocks;x++) {
Bitu val=vga.mem.linear[vidstart+line];
vidstart=(vidstart+1)&0x1dfff;
vidstart++;
if((vga.crtc.mode_control & 0x01) == 0) // CGA compatible addressing
vidstart &= 0x1dfff;
*draw++=CGA_4_Table[val];
}
return TempLine;