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ks_nes_draw: improve ksNesDrawOBJSetupMMC2

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This commit is contained in:
Cuyler36
2025-10-24 22:06:22 -04:00
parent 96c8101866
commit fc73593dca
1 changed files with 7 additions and 8 deletions
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src/static/Famicom/ks_nes_draw.cpp
+7 -8
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@@ -207,8 +207,7 @@ void ksNesDrawMakeBGIndTexMMC2(ksNesCommonWorkObj* wp, u32 mode) {
void ksNesDrawOBJSetupMMC2(ksNesCommonWorkObj* wp) {
u32 i;
u32 j;
u32 max;
u32 chr_bank;
u32 k;
memset(&wp->work_priv._0200, 0, sizeof(wp->work_priv._0200));
for (i = 0; i < 64; i++) {
@@ -218,22 +217,22 @@ void ksNesDrawOBJSetupMMC2(ksNesCommonWorkObj* wp) {
}
j = wp->work_priv._2940[i]._00;
max = (((wp->work_priv._0B40[j]._18 >> 2) & 0x08) + 8) + j;
k = (((wp->work_priv._0B40[j]._18 >> 2) & 0x08) + 8) + j;
do {
wp->work_priv._0200[j] = wp->work_priv._2940[i]._01;
j++;
} while(j < max);
} while(j < k);
}
// _0200 is the scanline marker entries
for (i = 0, chr_bank = 0; i < ARRAY_COUNT(wp->work_priv._0200); i++) {
for (i = 0, k = 0; i < ARRAY_COUNT(wp->work_priv._0200); i++) {
if (wp->work_priv._0200[i] == ksNes_MMC2_LATCH_HI) {
chr_bank = 0;
k = 0;
} else if (wp->work_priv._0200[i] == ksNes_MMC2_LATCH_LO) {
chr_bank = 1;
k = 1;
}
if (chr_bank) {
if (k) {
wp->work_priv._0B40[i]._08[0] = wp->work_priv._0B40[i]._08[1] - 1;
wp->work_priv._0B40[i]._08[2] = wp->work_priv._0B40[i]._08[1] + 1;
wp->work_priv._0B40[i]._08[3] = wp->work_priv._0B40[i]._08[1] + 2;