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Implement horizontal soft panning on EGA/VGA text modes.

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This commit is contained in:
SarahW 2018-08-31 08:44:00 +01:00
commit 0d687a4f6c
1 changed files with 6 additions and 3 deletions
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9
src/vid_svga_render.c
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@ -40,7 +40,8 @@ void svga_render_text_40(svga_t *svga)
if (svga->fullchange) if (svga->fullchange)
{ {
uint32_t *p = &((uint32_t *)buffer32->line[svga->displine])[32]; int offset = ((8 - svga->scrollcache) << 1) + 16;
uint32_t *p = &((uint32_t *)buffer32->line[svga->displine])[offset];
int x, xx; int x, xx;
int drawcursor; int drawcursor;
uint8_t chr, attr, dat; uint8_t chr, attr, dat;
@ -103,7 +104,8 @@ void svga_render_text_80(svga_t *svga)
if (svga->fullchange) if (svga->fullchange)
{ {
uint32_t *p = &((uint32_t *)buffer32->line[svga->displine])[32]; int offset = (8 - svga->scrollcache) + 24;
uint32_t *p = &((uint32_t *)buffer32->line[svga->displine])[offset];
int x, xx; int x, xx;
int drawcursor; int drawcursor;
uint8_t chr, attr, dat; uint8_t chr, attr, dat;
@ -166,7 +168,8 @@ void svga_render_text_80_ksc5601(svga_t *svga)
if (svga->fullchange) if (svga->fullchange)
{ {
uint32_t *p = &((uint32_t *)buffer32->line[svga->displine])[32]; int offset = (8 - svga->scrollcache) + 24;
uint32_t *p = &((uint32_t *)buffer32->line[svga->displine])[offset];
int x, xx; int x, xx;
int drawcursor; int drawcursor;
uint8_t chr, attr, dat, nextchr; uint8_t chr, attr, dat, nextchr;