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Slightly more accurate

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Lior Halphon
2024-07-26 14:04:41 +03:00
parent 5eb0e5d605
commit 5f71ec4974
1 changed files with 9 additions and 1 deletions
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10
Core/display.c
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@@ -1739,7 +1739,15 @@ void GB_display_run(GB_gameboy_t *gb, unsigned cycles, bool force)
if (!gb->wx_triggered && gb->wy_triggered && (gb->io_registers[GB_IO_LCDC] & GB_LCDC_WIN_ENABLE)) { if (!gb->wx_triggered && gb->wy_triggered && (gb->io_registers[GB_IO_LCDC] & GB_LCDC_WIN_ENABLE)) {
bool should_activate_window = false; bool should_activate_window = false;
if (unlikely(gb->io_registers[GB_IO_WX] == 0)) { if (unlikely(gb->io_registers[GB_IO_WX] == 0)) {
should_activate_window = (gb->position_in_line == (uint8_t)-16 && (gb->io_registers[GB_IO_SCX] & 7)) || (gb->position_in_line == (uint8_t)-7); if (gb->position_in_line == (uint8_t)-7) {
should_activate_window = true;
}
else if (gb->position_in_line == (uint8_t)-16 && (gb->io_registers[GB_IO_SCX] & 7)) {
should_activate_window = true;
}
else if (gb->position_in_line >= (uint8_t)-15 && gb->position_in_line <= (uint8_t)-8) {
should_activate_window = true;
}
} }
else if (gb->io_registers[GB_IO_WX] < 166 + GB_is_cgb(gb)) { else if (gb->io_registers[GB_IO_WX] < 166 + GB_is_cgb(gb)) {
if (gb->io_registers[GB_IO_WX] == (uint8_t) (gb->position_in_line + 7)) { if (gb->io_registers[GB_IO_WX] == (uint8_t) (gb->position_in_line + 7)) {