Miroirs/wipeout-rewrite
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Make image loading a bit faster by doing the color conversion for each palette entry just once

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This commit is contained in:
Dominic Szablewski 2023-08-28 18:09:34 +02:00
parent 97a1073946
commit 4b1fa81f30
1 changed files with 8 additions and 8 deletions
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16
src/wipeout/image.c
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@ -49,7 +49,7 @@ image_t *image_load_from_bytes(uint8_t *bytes, bool transparent) {
uint32_t magic = get_i32_le(bytes, &p);
uint32_t type = get_i32_le(bytes, &p);
uint16_t palette[256];
rgba_t palette[256];
if (
type == TIM_TYPE_PALETTED_4_BPP ||
@ -61,7 +61,7 @@ image_t *image_load_from_bytes(uint8_t *bytes, bool transparent) {
uint16_t palette_colors = get_i16_le(bytes, &p);
uint16_t palettes = get_i16_le(bytes, &p);
for (int i = 0; i < palette_colors; i++) {
palette[i] = get_u16_le(bytes, &p);
palette[i] = tim_16bit_to_rgba(get_u16_le(bytes, &p), transparent);
}
}
@ -95,17 +95,17 @@ image_t *image_load_from_bytes(uint8_t *bytes, bool transparent) {
else if (type == TIM_TYPE_PALETTED_8_BPP) {
for (int i = 0; i < entries; i++) {
int32_t palette_pos = get_i16_le(bytes, &p);
image->pixels[pixel_pos++] = tim_16bit_to_rgba(palette[(palette_pos >> 0) & 0xff], transparent);
image->pixels[pixel_pos++] = tim_16bit_to_rgba(palette[(palette_pos >> 8) & 0xff], transparent);
image->pixels[pixel_pos++] = palette[(palette_pos >> 0) & 0xff];
image->pixels[pixel_pos++] = palette[(palette_pos >> 8) & 0xff];
}
}
else if (type == TIM_TYPE_PALETTED_4_BPP) {
for (int i = 0; i < entries; i++) {
int32_t palette_pos = get_i16_le(bytes, &p);
image->pixels[pixel_pos++] = tim_16bit_to_rgba(palette[(palette_pos >> 0) & 0xf], transparent);
image->pixels[pixel_pos++] = tim_16bit_to_rgba(palette[(palette_pos >> 4) & 0xf], transparent);
image->pixels[pixel_pos++] = tim_16bit_to_rgba(palette[(palette_pos >> 8) & 0xf], transparent);
image->pixels[pixel_pos++] = tim_16bit_to_rgba(palette[(palette_pos >> 12) & 0xf], transparent);
image->pixels[pixel_pos++] = palette[(palette_pos >> 0) & 0xf];
image->pixels[pixel_pos++] = palette[(palette_pos >> 4) & 0xf];
image->pixels[pixel_pos++] = palette[(palette_pos >> 8) & 0xf];
image->pixels[pixel_pos++] = palette[(palette_pos >> 12) & 0xf];
}
}