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Fixed EGA and (S)VGA pel panning, fixes games like Supaplex.

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This commit is contained in:
OBattler
2019-11-19 19:18:44 +01:00
parent 3cc320d2b2
commit ac0a1ee327
4 changed files with 61 additions and 45 deletions
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16
src/video/vid_ega_render.c
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@@ -8,7 +8,7 @@
*
* EGA renderers.
*
* Version: @(#)vid_ega_render.c 1.0.6 2019/10/03
* Version: @(#)vid_ega_render.c 1.0.7 2019/11/19
*
* Author: Sarah Walker, <http://pcem-emulator.co.uk/>
* Miran Grca, <mgrca8@gmail.com>
@@ -53,7 +53,7 @@ ega_render_blank(ega_t *ega)
if ((ega->displine + ega->y_add) < 0)
return;
for (x = 0; x < ega->hdisp; x++) {
for (x = 0; x < (ega->hdisp + ega->scrollcache); x++) {
switch (ega->seqregs[1] & 9) {
case 0:
for (xx = 0; xx < 9; xx++) buffer32->line[ega->displine + ega->y_add][ega->x_add + (x * 9) + xx] = 0;
@@ -120,7 +120,7 @@ ega_render_text_40(ega_t *ega)
p = &buffer32->line[ega->displine + ega->y_add][ega->x_add];
xinc = (ega->seqregs[1] & 1) ? 16 : 18;
for (x = 0; x < ega->hdisp; x += xinc) {
for (x = 0; x < (ega->hdisp + ega->scrollcache); x += xinc) {
drawcursor = ((ega->ma == ega->ca) && ega->con && ega->cursoron);
chr = ega->vram[(ega->ma << 1) & ega->vrammask];
attr = ega->vram[((ega->ma << 1) + 1) & ega->vrammask];
@@ -183,7 +183,7 @@ ega_render_text_80(ega_t *ega)
p = &buffer32->line[ega->displine + ega->y_add][ega->x_add];
xinc = (ega->seqregs[1] & 1) ? 8 : 9;
for (x = 0; x < ega->hdisp; x += xinc) {
for (x = 0; x < (ega->hdisp + ega->scrollcache); x += xinc) {
drawcursor = ((ega->ma == ega->ca) && ega->con && ega->cursoron);
chr = ega->vram[(ega->ma << 1) & ega->vrammask];
attr = ega->vram[((ega->ma << 1) + 1) & ega->vrammask];
@@ -240,7 +240,7 @@ ega_render_2bpp_lowres(ega_t *ega)
ega->firstline_draw = ega->displine;
ega->lastline_draw = ega->displine;
for (x = 0; x <= ega->hdisp; x += 16) {
for (x = 0; x <= (ega->hdisp + ega->scrollcache); x += 16) {
addr = ega->ma;
if (!(ega->crtc[0x17] & 0x40)) {
@@ -299,7 +299,7 @@ ega_render_2bpp_highres(ega_t *ega)
ega->firstline_draw = ega->displine;
ega->lastline_draw = ega->displine;
for (x = 0; x <= ega->hdisp; x += 8) {
for (x = 0; x <= (ega->hdisp + ega->scrollcache); x += 8) {
addr = ega->ma;
if (!(ega->crtc[0x17] & 0x40)) {
@@ -358,7 +358,7 @@ ega_render_4bpp_lowres(ega_t *ega)
ega->firstline_draw = ega->displine;
ega->lastline_draw = ega->displine;
for (x = 0; x <= ega->hdisp; x += 16) {
for (x = 0; x <= (ega->hdisp + ega->scrollcache); x += 16) {
addr = ega->ma;
oddeven = 0;
@@ -431,7 +431,7 @@ ega_render_4bpp_highres(ega_t *ega)
ega->firstline_draw = ega->displine;
ega->lastline_draw = ega->displine;
for (x = 0; x <= ega->hdisp; x += 8) {
for (x = 0; x <= (ega->hdisp + ega->scrollcache); x += 8) {
addr = ega->ma;
oddeven = 0;