git.y1.nz

commit 5f71ec4974343b3ab5132807f1cbdb8100724698
parent 5eb0e5d605dc1bbb818b03b3b0b74142be4e108f
Author: Lior Halphon <LIJI32@gmail.com>
Date:   Fri, 26 Jul 2024 14:04:41 +0300

Slightly more accurate

Diffstat:
M
Core/display.c
10
+++++++++-

1 file changed, 9 insertions(+), 1 deletion(-)
diff --git a/Core/display.c b/Core/display.c
@@ -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)) {
                     bool should_activate_window = false;
                     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)) {
                         if (gb->io_registers[GB_IO_WX] == (uint8_t) (gb->position_in_line + 7)) {

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