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Optimize png_reverse_filter_copy_line_rgba

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This commit is contained in:
twinaphex 2020-08-19 08:14:23 +02:00
parent aa428cc415
commit ad3c67f275
1 changed files with 8 additions and 12 deletions
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20
libretro-common/formats/png/rpng.c
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@ -248,22 +248,18 @@ static void png_reverse_filter_copy_line_rgb(uint32_t *data,
static void png_reverse_filter_copy_line_rgba(uint32_t *data,
const uint8_t *decoded, unsigned width, unsigned bpp)
{
unsigned i;
uint32_t *data_ptr = NULL;
bpp /= 8;
for (i = 0; i < width; i++)
for (data_ptr = &data[0]; data_ptr < data + width; data_ptr++)
{
uint32_t r, g, b, a;
r = *decoded;
decoded += bpp;
g = *decoded;
decoded += bpp;
b = *decoded;
decoded += bpp;
a = *decoded;
decoded += bpp;
data[i] = (a << 24) | (r << 16) | (g << 8) | (b << 0);
uint32_t r = *(decoded);
uint32_t g = *(decoded + bpp);
uint32_t b = *(decoded + bpp + bpp);
uint32_t a = *(decoded + bpp + bpp + bpp);
decoded += (4 * bpp);
*data_ptr = (a << 24) | (r << 16) | (g << 8) | (b << 0);
}
}