Mercurial > repos > blastem

comparison vdp.c @ 2263:a98b2d0de2f1

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Fix TMS9918A first line sprite bug
author Michael Pavone <pavone@retrodev.com>
date Fri, 23 Dec 2022 09:08:47 -0800
parents 3f155bc13183
children c7781cc950e9
comparison
equal deleted inserted replaced
2262:bc68560b4a04 2263:a98b2d0de2f1
4315 vint_line = context->inactive_start + 1; 4315 vint_line = context->inactive_start + 1;
4316 vint_slot = VINT_SLOT_MODE4; 4316 vint_slot = VINT_SLOT_MODE4;
4317 line_change = LINE_CHANGE_MODE4; 4317 line_change = LINE_CHANGE_MODE4;
4318 jump_start = 147; 4318 jump_start = 147;
4319 jump_dest = 233; 4319 jump_dest = 233;
4320 if (context->regs[REG_MODE_1] & BIT_MODE_4 || context->type != VDP_GENESIS) { 4320 if ((context->regs[REG_MODE_1] & BIT_MODE_4) || context->type != VDP_GENESIS) {
4321 active_line = 0x1FF; 4321 active_line = 0x1FF;
4322 } else { 4322 } else {
4323 //never active unless either mode 4 or mode 5 is turned on 4323 //never active unless either mode 4 or mode 5 is turned on
4324 active_line = 0x200; 4324 active_line = 0x200;
4325 } 4325 }
4367 } 4367 }
4368 4368
4369 if (context->hslot == buf_clear_slot) { 4369 if (context->hslot == buf_clear_slot) {
4370 if (mode_5) { 4370 if (mode_5) {
4371 context->cur_slot = max_draws; 4371 context->cur_slot = max_draws;
4372 } else { 4372 } else if ((context->regs[REG_MODE_1] & BIT_MODE_4) || context->type == VDP_GENESIS) {
4373 context->cur_slot = context->sprite_index = MAX_DRAWS_H32_MODE4-1; 4373 context->cur_slot = context->sprite_index = MAX_DRAWS_H32_MODE4-1;
4374 context->sprite_draws = MAX_DRAWS_H32_MODE4; 4374 context->sprite_draws = MAX_DRAWS_H32_MODE4;
4375 } else {
4376 context->sprite_draws = 0;
4375 } 4377 }
4376 memset(context->linebuf, 0, LINEBUF_SIZE); 4378 memset(context->linebuf, 0, LINEBUF_SIZE);
4377 } else if (context->hslot == index_reset_slot) { 4379 } else if (context->hslot == index_reset_slot) {
4378 context->sprite_index = index_reset_value; 4380 context->sprite_index = index_reset_value;
4379 context->slot_counter = mode_5 ? 0 : max_sprites; 4381 context->slot_counter = mode_5 ? 0 : max_sprites;
4396 uint8_t bg_index; 4398 uint8_t bg_index;
4397 uint32_t bg_color; 4399 uint32_t bg_color;
4398 if (mode_5) { 4400 if (mode_5) {
4399 bg_index = context->regs[REG_BG_COLOR] & 0x3F; 4401 bg_index = context->regs[REG_BG_COLOR] & 0x3F;
4400 bg_color = context->colors[bg_index]; 4402 bg_color = context->colors[bg_index];
4401 } else if (context->regs[REG_MODE_1] & BIT_MODE_4) { 4403 } else if ((context->regs[REG_MODE_1] & BIT_MODE_4) || context->type != VDP_GENESIS) {
4402 bg_index = 0x10 + (context->regs[REG_BG_COLOR] & 0xF); 4404 bg_index = 0x10 + (context->regs[REG_BG_COLOR] & 0xF);
4403 bg_color = context->colors[MODE4_OFFSET + bg_index]; 4405 bg_color = context->colors[MODE4_OFFSET + bg_index];
4404 } else { 4406 } else {
4405 bg_color = render_map_color(0, 0, 0); 4407 bg_color = context->colors[0];
4406 } 4408 }
4407 if (context->done_composite) { 4409 if (context->done_composite) {
4408 uint8_t pixel = context->compositebuf[dst-context->output]; 4410 uint8_t pixel = context->compositebuf[dst-context->output];
4409 if (!(pixel & 0x3F | test_layer)) { 4411 if (!(pixel & 0x3F | test_layer)) {
4410 pixel = pixel & 0xC0 | bg_index; 4412 pixel = pixel & 0xC0 | bg_index;