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Border fade animation

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This commit is contained in:
Lior Halphon 2018-11-16 17:36:21 +02:00
parent 69ac36cca1
commit 595907cae2
2 changed files with 58 additions and 19 deletions
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60
Core/sgb.c
View File

@ -170,6 +170,23 @@ static uint32_t convert_rgb15(GB_gameboy_t *gb, uint16_t color)
return gb->rgb_encode_callback(gb, r, g, b);
}
static uint32_t convert_rgb15_with_fade(GB_gameboy_t *gb, uint16_t color, uint8_t fade)
{
uint8_t r = ((color) & 0x1F) - fade;
uint8_t g = ((color >> 5) & 0x1F) - fade;
uint8_t b = ((color >> 10) & 0x1F) - fade;
if (r >= 0x20) r = 0;
if (g >= 0x20) g = 0;
if (b >= 0x20) b = 0;
r = scale_channel(r);
g = scale_channel(g);
b = scale_channel(b);
return gb->rgb_encode_callback(gb, r, g, b);
}
void GB_sgb_render(GB_gameboy_t *gb)
{
if (!gb->screen || !gb->rgb_encode_callback) return;
@ -181,11 +198,6 @@ void GB_sgb_render(GB_gameboy_t *gb)
gb->rgb_encode_callback(gb, 0x33, 0x1e, 0x50)
};
uint32_t border_colors[16 * 4];
for (unsigned i = 0; i < 16 * 4; i++) {
border_colors[i] = convert_rgb15(gb, gb->sgb->border_palette[i]);
}
switch ((mask_mode_t) gb->sgb->mask_mode) {
case MASK_DISABLED:
memcpy(gb->sgb->effective_screen_buffer,
@ -209,7 +221,7 @@ void GB_sgb_render(GB_gameboy_t *gb)
if (gb->sgb->vram_transfer_countdown) {
if (--gb->sgb->vram_transfer_countdown == 0) {
if (gb->sgb->tile_transfer) {
uint8_t *base = &gb->sgb->tiles[gb->sgb->tile_transfer_high? 0x80 * 8 * 8 : 0];
uint8_t *base = &gb->sgb->pending_border.tiles[gb->sgb->tile_transfer_high? 0x80 * 8 * 8 : 0];
for (unsigned tile = 0; tile < 0x80; tile++) {
unsigned tile_x = (tile % 10) * 16;
unsigned tile_y = (tile / 10) * 8;
@ -228,13 +240,14 @@ void GB_sgb_render(GB_gameboy_t *gb)
unsigned tile_y = (tile / 20) * 8;
for (unsigned y = 0; y < 0x8; y++) {
static const uint16_t pixel_to_bits[4] = {0x0000, 0x0080, 0x8000, 0x8080};
uint16_t *data = &gb->sgb->raw_pct_data[tile * 8 + y];
uint16_t *data = &gb->sgb->pending_border.raw_data[tile * 8 + y];
*data = 0;
for (unsigned x = 0; x < 8; x++) {
*data |= pixel_to_bits[gb->sgb->screen_buffer[(tile_x + x) + (tile_y + y) * 160] & 3] >> x;
}
}
}
gb->sgb->border_animation = 64;
}
}
}
@ -248,19 +261,42 @@ void GB_sgb_render(GB_gameboy_t *gb)
output += 256 - 160;
}
uint32_t border_colors[16 * 4];
if (gb->sgb->border_animation == 0) {
for (unsigned i = 0; i < 16 * 4; i++) {
border_colors[i] = convert_rgb15(gb, gb->sgb->border.palette[i]);
}
}
else if (gb->sgb->border_animation > 32) {
gb->sgb->border_animation--;
for (unsigned i = 0; i < 16 * 4; i++) {
border_colors[i] = convert_rgb15_with_fade(gb, gb->sgb->border.palette[i], 64 - gb->sgb->border_animation);
}
}
else {
gb->sgb->border_animation--;
for (unsigned i = 0; i < 16 * 4; i++) {
border_colors[i] = convert_rgb15_with_fade(gb, gb->sgb->border.palette[i], gb->sgb->border_animation);
}
}
if (gb->sgb->border_animation == 32) {
memcpy(&gb->sgb->border, &gb->sgb->pending_border, sizeof(gb->sgb->border));
}
for (unsigned tile_y = 0; tile_y < 28; tile_y++) {
for (unsigned tile_x = 0; tile_x < 32; tile_x++) {
bool gb_area = false;
if (tile_x >= 6 && tile_x < 26 && tile_y >= 5 && tile_y < 23) {
gb_area = true;
}
uint16_t tile = gb->sgb->map[tile_x + tile_y * 32];
uint16_t tile = gb->sgb->border.map[tile_x + tile_y * 32];
uint8_t flip_x = (tile & 0x4000)? 0x7 : 0;
uint8_t flip_y = (tile & 0x8000)? 0x7 : 0;
uint8_t palette = (tile >> 10) & 3;
for (unsigned y = 0; y < 8; y++) {
for (unsigned x = 0; x < 8; x++) {
uint8_t color = gb->sgb->tiles[(tile & 0xFF) * 64 + (x ^ flip_x) + (y ^ flip_y) * 8] & 0xF;
uint8_t color = gb->sgb->border.tiles[(tile & 0xFF) * 64 + (x ^ flip_x) + (y ^ flip_y) * 8] & 0xF;
if (color == 0 && gb_area) continue;
gb->screen[tile_x * 8 + x + (tile_y * 8 + y) * 0x100] =
border_colors[palette * 16 + color];
@ -944,15 +980,15 @@ void GB_sgb_load_default_border(GB_gameboy_t *gb)
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
};
memcpy(gb->sgb->map, tilemap, sizeof(tilemap));
memcpy(gb->sgb->border_palette, palette, sizeof(palette));
memcpy(gb->sgb->border.map, tilemap, sizeof(tilemap));
memcpy(gb->sgb->border.palette, palette, sizeof(palette));
/* Expend tileset */
for (unsigned tile = 0; tile < sizeof(tiles) / 32; tile++) {
for (unsigned y = 0; y < 8; y++) {
for (unsigned x = 0; x < 8; x++) {
gb->sgb->tiles[tile * 8 * 8 + y * 8 + x] =
gb->sgb->border.tiles[tile * 8 * 8 + y * 8 + x] =
(tiles[tile * 32 + y * 2 + 0] & (1 << (7 ^ x)) ? 1 : 0) |
(tiles[tile * 32 + y * 2 + 1] & (1 << (7 ^ x)) ? 2 : 0) |
(tiles[tile * 32 + y * 2 + 16] & (1 << (7 ^ x)) ? 4 : 0) |

17
Core/sgb.h
View File

@ -26,14 +26,17 @@ typedef struct {
/* Border */
uint8_t vram_transfer_countdown;
bool tile_transfer, tile_transfer_high, data_transfer;
uint8_t tiles[0x100 * 8 * 8]; /* High nibble not used*/
union {
struct {
uint16_t map[32 * 32];
uint16_t border_palette[16 * 4];
struct {
uint8_t tiles[0x100 * 8 * 8]; /* High nibble not used*/
union {
struct {
uint16_t map[32 * 32];
uint16_t palette[16 * 4];
};
uint16_t raw_data[0x440];
};
uint16_t raw_pct_data[0x440];
};
} border, pending_border;
uint8_t border_animation;
} GB_sgb_t;