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Optimize png_reverse_filter_copy_line_gray_alpha

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This commit is contained in:
twinaphex 2020-08-19 08:18:09 +02:00
parent ad3c67f275
commit 710226504e
1 changed files with 6 additions and 10 deletions
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16
libretro-common/formats/png/rpng.c
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@ -299,20 +299,16 @@ static void png_reverse_filter_copy_line_gray_alpha(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 gray, alpha;
gray = *decoded;
decoded += bpp;
alpha = *decoded;
decoded += bpp;
data[i] = (gray * 0x010101) | (alpha << 24);
uint32_t gray = *(decoded);
uint32_t alpha = *(decoded + bpp);
decoded += (2 * bpp);
*data_ptr = (gray * 0x010101) | (alpha << 24);
}
}