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Fix a regression while emulating object size change during fetch

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This commit is contained in:
Lior Halphon 2022-05-04 00:23:55 +03:00
parent bef1529bb2
commit 36e2896ec7
1 changed files with 14 additions and 11 deletions
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23
Core/display.c
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@ -1656,11 +1656,8 @@ void GB_display_run(GB_gameboy_t *gb, unsigned cycles, bool force)
advance_fetcher_state_machine(gb, &cycles);
dma_sync(gb, &cycles);
gb->object_low_line_address = get_object_line_address(gb,
gb->objects_y[gb->n_visible_objs - 1],
gb->mode2_y_bus = oam_read(gb, gb->visible_objs[gb->n_visible_objs - 1] * 4 + 2),
gb->object_flags = oam_read(gb, gb->visible_objs[gb->n_visible_objs - 1] * 4 + 3)
);
gb->mode2_y_bus = oam_read(gb, gb->visible_objs[gb->n_visible_objs - 1] * 4 + 2);
gb->object_flags = oam_read(gb, gb->visible_objs[gb->n_visible_objs - 1] * 4 + 3);
gb->cycles_for_line += 2;
GB_SLEEP(gb, display, 20, 2);
@ -1670,6 +1667,10 @@ void GB_display_run(GB_gameboy_t *gb, unsigned cycles, bool force)
/* TODO: timing not verified */
dma_sync(gb, &cycles);
gb->object_low_line_address = get_object_line_address(gb,
gb->objects_y[gb->n_visible_objs - 1],
gb->mode2_y_bus,
gb->object_flags);
gb->object_tile_data[0] = vram_read(gb, gb->object_low_line_address);
@ -1679,15 +1680,17 @@ void GB_display_run(GB_gameboy_t *gb, unsigned cycles, bool force)
goto abort_fetching_object;
}
/* TODO: timing not verified */
dma_sync(gb, &cycles);
gb->object_tile_data[1] = vram_read(gb, gb->object_low_line_address + 1);
gb->during_object_fetch = false;
gb->cycles_for_line++;
GB_SLEEP(gb, display, 40, 1);
/* TODO: timing not verified */
dma_sync(gb, &cycles);
gb->object_tile_data[1] = vram_read(gb, get_object_line_address(gb,
gb->objects_y[gb->n_visible_objs - 1],
gb->mode2_y_bus,
gb->object_flags) + 1);
uint8_t palette = (gb->object_flags & 0x10) ? 1 : 0;
if (gb->cgb_mode) {