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Correct emulation of color masks

This commit is contained in:
Lior Halphon 2018-11-24 15:42:54 +02:00
parent 389d8ae045
commit 4b93f89763
1 changed files with 37 additions and 24 deletions
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61
Core/sgb.c
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@ -23,7 +23,7 @@ enum {
typedef enum {
MASK_DISABLED,
MASK_FREEZE,
MASK_COLOR_3,
MASK_BLACK,
MASK_COLOR_0,
} mask_mode_t;
@ -404,24 +404,10 @@ void GB_sgb_render(GB_gameboy_t *gb)
if (!gb->screen || !gb->rgb_encode_callback) return;
switch ((mask_mode_t) gb->sgb->mask_mode) {
case MASK_DISABLED:
memcpy(gb->sgb->effective_screen_buffer,
gb->sgb->screen_buffer,
sizeof(gb->sgb->effective_screen_buffer));
break;
case MASK_FREEZE:
break;
case MASK_COLOR_3:
memset(gb->sgb->effective_screen_buffer,
3,
sizeof(gb->sgb->effective_screen_buffer));
break;
case MASK_COLOR_0:
memset(gb->sgb->effective_screen_buffer,
0,
sizeof(gb->sgb->effective_screen_buffer));
if (gb->sgb->mask_mode != MASK_FREEZE) {
memcpy(gb->sgb->effective_screen_buffer,
gb->sgb->screen_buffer,
sizeof(gb->sgb->effective_screen_buffer));
}
if (gb->sgb->vram_transfer_countdown) {
@ -496,12 +482,39 @@ void GB_sgb_render(GB_gameboy_t *gb)
else {
uint32_t *output = &gb->screen[48 + 40 * 256];
uint8_t *input = gb->sgb->effective_screen_buffer;
for (unsigned y = 0; y < 144; y++) {
for (unsigned x = 0; x < 160; x++) {
uint8_t palette = gb->sgb->attribute_map[x / 8 + y / 8 * 20] & 3;
*(output++) = colors[(*(input++) & 3) + palette * 4];
switch ((mask_mode_t) gb->sgb->mask_mode) {
case MASK_DISABLED:
case MASK_FREEZE: {
for (unsigned y = 0; y < 144; y++) {
for (unsigned x = 0; x < 160; x++) {
uint8_t palette = gb->sgb->attribute_map[x / 8 + y / 8 * 20] & 3;
*(output++) = colors[(*(input++) & 3) + palette * 4];
}
output += 256 - 160;
}
break;
}
case MASK_BLACK:
{
uint32_t black = convert_rgb15(gb, 0);
for (unsigned y = 0; y < 144; y++) {
for (unsigned x = 0; x < 160; x++) {
*(output++) = black;
}
output += 256 - 160;
}
break;
}
case MASK_COLOR_0:
{
for (unsigned y = 0; y < 144; y++) {
for (unsigned x = 0; x < 160; x++) {
*(output++) = colors[0];
}
output += 256 - 160;
}
break;
}
output += 256 - 160;
}
}