Get rid of the FIFO pause flags
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e29246fd91
commit
955860b463
@ -422,20 +422,21 @@ static void render_pixel_if_possible(GB_gameboy_t *gb)
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bool draw_oam = false;
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bool draw_oam = false;
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bool bg_enabled = true, bg_priority = false;
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bool bg_enabled = true, bg_priority = false;
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if (!gb->bg_fifo_paused) {
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if (fifo_size(&gb->bg_fifo)) {
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fifo_item = fifo_pop(&gb->bg_fifo);
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fifo_item = fifo_pop(&gb->bg_fifo);
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bg_priority = fifo_item->bg_priority;
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bg_priority = fifo_item->bg_priority;
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}
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if (!gb->oam_fifo_paused && fifo_size(&gb->oam_fifo)) {
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if (fifo_size(&gb->oam_fifo)) {
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oam_fifo_item = fifo_pop(&gb->oam_fifo);
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oam_fifo_item = fifo_pop(&gb->oam_fifo);
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if (oam_fifo_item->pixel && (gb->io_registers[GB_IO_LCDC] & 2)) {
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if (oam_fifo_item->pixel && (gb->io_registers[GB_IO_LCDC] & 2)) {
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draw_oam = true;
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draw_oam = true;
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bg_priority |= oam_fifo_item->bg_priority;
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bg_priority |= oam_fifo_item->bg_priority;
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}
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}
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}
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}
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}
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if (gb->bg_fifo_paused) return;
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if (!fifo_item) return;
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/* Drop pixels for scrollings */
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/* Drop pixels for scrollings */
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if (gb->position_in_line >= 160 || (gb->disable_rendering && !gb->sgb)) {
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if (gb->position_in_line >= 160 || (gb->disable_rendering && !gb->sgb)) {
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@ -658,7 +659,6 @@ static void advance_fetcher_state_machine(GB_gameboy_t *gb)
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gb->fetcher_state++;
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gb->fetcher_state++;
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// fallthrough
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// fallthrough
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case GB_FETCHER_PUSH: {
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case GB_FETCHER_PUSH: {
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if (fifo_size(&gb->bg_fifo) > 0) break;
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if (fifo_size(&gb->bg_fifo) > 0) break;
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@ -673,8 +673,6 @@ static void advance_fetcher_state_machine(GB_gameboy_t *gb)
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fifo_push_bg_row(&gb->bg_fifo, gb->current_tile_data[0], gb->current_tile_data[1],
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fifo_push_bg_row(&gb->bg_fifo, gb->current_tile_data[0], gb->current_tile_data[1],
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gb->current_tile_attributes & 7, gb->current_tile_attributes & 0x80, gb->current_tile_attributes & 0x20);
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gb->current_tile_attributes & 7, gb->current_tile_attributes & 0x80, gb->current_tile_attributes & 0x20);
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gb->bg_fifo_paused = false;
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gb->oam_fifo_paused = false;
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gb->fetcher_state = 0;
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gb->fetcher_state = 0;
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}
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}
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break;
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break;
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@ -946,8 +944,6 @@ void GB_display_run(GB_gameboy_t *gb, uint8_t cycles)
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/* The actual rendering cycle */
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/* The actual rendering cycle */
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gb->fetcher_state = 0;
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gb->fetcher_state = 0;
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gb->bg_fifo_paused = false;
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gb->oam_fifo_paused = false;
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while (true) {
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while (true) {
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/* Handle window */
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/* Handle window */
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/* Todo: verify timings */
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/* Todo: verify timings */
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@ -962,8 +958,6 @@ void GB_display_run(GB_gameboy_t *gb, uint8_t cycles)
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gb->wx_triggered = true;
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gb->wx_triggered = true;
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gb->window_tile_x = 0;
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gb->window_tile_x = 0;
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fifo_clear(&gb->bg_fifo);
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fifo_clear(&gb->bg_fifo);
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gb->bg_fifo_paused = true;
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gb->oam_fifo_paused = true;
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gb->fetcher_state = 0;
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gb->fetcher_state = 0;
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window_got_activated = true;
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window_got_activated = true;
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}
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}
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@ -489,7 +489,7 @@ struct GB_gameboy_internal_s {
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bool vram_read_blocked;
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bool vram_read_blocked;
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bool oam_write_blocked;
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bool oam_write_blocked;
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bool vram_write_blocked;
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bool vram_write_blocked;
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GB_PADDING(bool, window_disabled_while_active);
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bool fifo_insertion_glitch;
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uint8_t current_line;
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uint8_t current_line;
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uint16_t ly_for_comparison;
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uint16_t ly_for_comparison;
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GB_fifo_t bg_fifo, oam_fifo;
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GB_fifo_t bg_fifo, oam_fifo;
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@ -500,8 +500,8 @@ struct GB_gameboy_internal_s {
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uint8_t current_tile_attributes;
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uint8_t current_tile_attributes;
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uint8_t current_tile_data[2];
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uint8_t current_tile_data[2];
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uint8_t fetcher_state;
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uint8_t fetcher_state;
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bool bg_fifo_paused;
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GB_PADDING(bool,bg_fifo_paused);
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bool oam_fifo_paused;
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GB_PADDING(bool,oam_fifo_paused);
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bool wx_triggered;
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bool wx_triggered;
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uint8_t visible_objs[10];
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uint8_t visible_objs[10];
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uint8_t obj_comparators[10];
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uint8_t obj_comparators[10];
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