diff --git a/Core/display.c b/Core/display.c index cc61a92..34ba843 100755 --- a/Core/display.c +++ b/Core/display.c @@ -473,11 +473,11 @@ static void render_pixel_if_possible(GB_gameboy_t *gb) bool draw_oam = false; bool bg_enabled = true, bg_priority = false; - if (!gb->fifo_paused) { + if (!gb->bg_fifo_paused) { fifo_item = fifo_pop(&gb->bg_fifo); } - if (fifo_size(&gb->oam_fifo)) { + if (!gb->oam_fifo_paused && fifo_size(&gb->oam_fifo)) { oam_fifo_item = fifo_pop(&gb->oam_fifo); if (oam_fifo_item->pixel) { draw_oam = true; @@ -490,7 +490,7 @@ static void render_pixel_if_possible(GB_gameboy_t *gb) gb->position_in_line++; return; } - if (gb->fifo_paused) return; + if (gb->bg_fifo_paused) return; /* Mixing */ @@ -622,7 +622,6 @@ void GB_display_run(GB_gameboy_t *gb, uint8_t cycles) GB_STAT_update(gb); gb->io_registers[GB_IO_STAT] &= ~3; - search_oam(gb); GB_SLEEP(gb, display, 7, 1); gb->io_registers[GB_IO_STAT] &= ~3; @@ -632,6 +631,7 @@ void GB_display_run(GB_gameboy_t *gb, uint8_t cycles) GB_STAT_update(gb); GB_SLEEP(gb, display, 8, MODE2_LENGTH - 4); + search_oam(gb); gb->vram_read_blocked = true; gb->vram_write_blocked = false; gb->oam_write_blocked = false; @@ -656,7 +656,8 @@ void GB_display_run(GB_gameboy_t *gb, uint8_t cycles) /* The actual rendering cycle */ gb->fetcher_divisor = false; gb->fetcher_state = GB_FETCHER_GET_TILE; - gb->fifo_paused = true; + gb->bg_fifo_paused = true; + gb->oam_fifo_paused = false; gb->in_window = false; while (true) { /* Handle objects */ @@ -691,7 +692,7 @@ void GB_display_run(GB_gameboy_t *gb, uint8_t cycles) if (gb->cgb_mode) { palette = object->flags & 0x7; } -#if 1 + fifo_overlay_object_row(&gb->oam_fifo, gb->vram[line_address], gb->vram[line_address + 1], @@ -699,7 +700,7 @@ void GB_display_run(GB_gameboy_t *gb, uint8_t cycles) object->flags & 0x80, gb->cgb_mode? gb->visible_objs[gb->n_visible_objs - 1] : 0, object->flags & 0x20); -#endif + gb->n_visible_objs--; } gb->fetching_objects = false; @@ -712,7 +713,8 @@ void GB_display_run(GB_gameboy_t *gb, uint8_t cycles) gb->position_in_line + 7 == gb->io_registers[GB_IO_WX]) { gb->in_window = true; fifo_clear(&gb->bg_fifo); - gb->fifo_paused = true; + gb->bg_fifo_paused = true; + gb->oam_fifo_paused = true; gb->fetcher_x = 0; gb->fetcher_state = GB_FETCHER_GET_TILE; } @@ -765,7 +767,8 @@ void GB_display_run(GB_gameboy_t *gb, uint8_t cycles) render_pixel_if_possible(gb); if (push) { fifo_push_bg_row(&gb->bg_fifo, gb->current_tile_data[0], gb->current_tile_data[1], 0, false); - gb->fifo_paused = false; + gb->bg_fifo_paused = false; + gb->oam_fifo_paused = false; } if (gb->position_in_line == 160) break; gb->cycles_for_line++; diff --git a/Core/gb.h b/Core/gb.h index c0c4514..db39779 100644 --- a/Core/gb.h +++ b/Core/gb.h @@ -419,7 +419,8 @@ struct GB_gameboy_internal_s { GB_FETCHER_MAX = GB_FETCHER_SLEEP, } fetcher_state:8; bool fetcher_divisor; // The fetcher runs at 2MHz - bool fifo_paused; + bool bg_fifo_paused; + bool oam_fifo_paused; bool in_window; uint8_t visible_objs[10]; uint8_t n_visible_objs;