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Basic colorization

This commit is contained in:
Lior Halphon 2018-11-16 22:05:35 +02:00
parent d42cbcdee2
commit e5e7ce8203
2 changed files with 59 additions and 8 deletions
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66
Core/sgb.c
View File

@ -5,6 +5,7 @@ enum {
PAL23 = 0x01,
PAL03 = 0x02,
PAL12 = 0x03,
ATTR_BLK = 0x04,
PAL_SET = 0x0A,
PAL_TRN = 0x0B,
DATA_SND = 0x0f,
@ -84,6 +85,56 @@ static void command_ready(GB_gameboy_t *gb)
case PAL12:
pal_command(gb, 1, 2);
break;
case ATTR_BLK: {
struct {
uint8_t count;
struct {
uint8_t control;
uint8_t palettes;
uint8_t left, top, right, bottom;
} data[];
} *command = (void *)(gb->sgb->command + 1);
if (command->count > 0x12) return;
for (unsigned i = 0; i < command->count; i++) {
bool inside = command->data[i].control & 1;
bool middle = command->data[i].control & 2;
bool outside = command->data[i].control & 4;
uint8_t inside_palette = command->data[i].palettes & 0x3;
uint8_t middle_palette = (command->data[i].palettes >> 2) & 0x3;
uint8_t outside_palette = (command->data[i].palettes >> 4) & 0x3;
if (inside && !middle && !outside) {
middle = true;
middle_palette = inside_palette;
}
else if (outside && !middle && !inside) {
middle = true;
middle_palette = outside_palette;
}
for (unsigned y = 0; y < 18; y++) {
for (unsigned x = 0; x < 20; x++) {
if (x < command->data[i].left || x > command->data[i].right ||
y < command->data[i].top || y > command->data[i].bottom) {
if (outside) {
gb->sgb->attribute_map[x + 20 * y] = outside_palette;
}
}
else if (x > command->data[i].left && x < command->data[i].right &&
y > command->data[i].top && y < command->data[i].bottom) {
if (inside) {
gb->sgb->attribute_map[x + 20 * y] = inside_palette;
}
}
else if(middle) {
gb->sgb->attribute_map[x + 20 * y] = middle_palette;
}
}
}
}
break;
}
case PAL_SET:
memcpy(&gb->sgb->effective_palettes[0],
&gb->sgb->ram_palettes[4 * (gb->sgb->command[1] + (gb->sgb->command[2] & 1) * 0x100)],
@ -250,13 +301,6 @@ void GB_sgb_render(GB_gameboy_t *gb)
{
if (!gb->screen || !gb->rgb_encode_callback) return;
uint32_t colors[] = {
convert_rgb15(gb, gb->sgb->effective_palettes[0]),
convert_rgb15(gb, gb->sgb->effective_palettes[1]),
convert_rgb15(gb, gb->sgb->effective_palettes[2]),
convert_rgb15(gb, gb->sgb->effective_palettes[3]),
};
switch ((mask_mode_t) gb->sgb->mask_mode) {
case MASK_DISABLED:
memcpy(gb->sgb->effective_screen_buffer,
@ -315,11 +359,17 @@ void GB_sgb_render(GB_gameboy_t *gb)
}
}
uint32_t colors[4 * 4];
for (unsigned i = 0; i < 4 * 4; i++) {
colors[i] = convert_rgb15(gb, gb->sgb->effective_palettes[i]);
}
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++) {
*(output++) = colors[*(input++) & 3];
uint8_t palette = gb->sgb->attribute_map[x / 8 + y / 8 * 20] & 3;
*(output++) = colors[(*(input++) & 3) + palette * 4];
}
output += 256 - 160;
}

1
Core/sgb.h
View File

@ -44,6 +44,7 @@ struct GB_sgb_s {
/* Colorization */
uint16_t effective_palettes[4 * 4];
uint16_t ram_palettes[4 * 512];
uint8_t attribute_map[20 * 18];
};
void GB_sgb_write(GB_gameboy_t *gb, uint8_t value);