diff options
| -rw-r--r-- | pixman/pixman-fast-path.c | 31 |
1 files changed, 30 insertions, 1 deletions
diff --git a/pixman/pixman-fast-path.c b/pixman/pixman-fast-path.c index 4aa6d73..696aca9 100644 --- a/pixman/pixman-fast-path.c +++ b/pixman/pixman-fast-path.c @@ -2176,11 +2176,40 @@ fast_fetch_r5g6b5 (pixman_iter_t *iter, const uint32_t *mask) iter->bits += iter->stride; - while (w > 0) + /* Align the source buffer at 4 bytes boundary */ + if (w > 0 && ((uintptr_t)src & 3)) { *dst++ = convert_0565_to_8888 (*src++); w--; } + /* Process two pixels per iteration */ + while ((w -= 2) >= 0) + { + uint32_t sr, sb, sg, t0, t1; + uint32_t s = *(const uint32_t *)src; + src += 2; + sr = (s >> 8) & 0x00F800F8; + sb = (s << 3) & 0x00F800F8; + sg = (s >> 3) & 0x00FC00FC; + sr |= sr >> 5; + sb |= sb >> 5; + sg |= sg >> 6; + t0 = ((sr << 16) & 0x00FF0000) | ((sg << 8) & 0x0000FF00) | + (sb & 0xFF) | 0xFF000000; + t1 = (sr & 0x00FF0000) | ((sg >> 8) & 0x0000FF00) | + (sb >> 16) | 0xFF000000; +#ifdef WORDS_BIGENDIAN + *dst++ = t1; + *dst++ = t0; +#else + *dst++ = t0; + *dst++ = t1; +#endif + } + if (w & 1) + { + *dst = convert_0565_to_8888 (*src); + } return iter->buffer; } |