diff options
Diffstat (limited to 'pixman')
| -rw-r--r-- | pixman/pixman/pixman-sse2.c | 75 |
1 files changed, 44 insertions, 31 deletions
diff --git a/pixman/pixman/pixman-sse2.c b/pixman/pixman/pixman-sse2.c index 9d9b16543..b19043bbd 100644 --- a/pixman/pixman/pixman-sse2.c +++ b/pixman/pixman/pixman-sse2.c @@ -3051,37 +3051,45 @@ sse2_composite_over_8888_n_8888 (pixman_implementation_t *imp, while (w && (unsigned long)dst & 15)
{
uint32_t s = *src++;
- uint32_t d = *dst;
-
- __m64 ms = unpack_32_1x64 (s);
- __m64 alpha = expand_alpha_1x64 (ms);
- __m64 dest = _mm_movepi64_pi64 (xmm_mask);
- __m64 alpha_dst = unpack_32_1x64 (d);
-
- *dst++ = pack_1x64_32 (
- in_over_1x64 (&ms, &alpha, &dest, &alpha_dst));
+ if (s)
+ {
+ uint32_t d = *dst;
+
+ __m64 ms = unpack_32_1x64 (s);
+ __m64 alpha = expand_alpha_1x64 (ms);
+ __m64 dest = _mm_movepi64_pi64 (xmm_mask);
+ __m64 alpha_dst = unpack_32_1x64 (d);
+
+ *dst = pack_1x64_32 (
+ in_over_1x64 (&ms, &alpha, &dest, &alpha_dst));
+ }
+ dst++;
w--;
}
while (w >= 4)
{
xmm_src = load_128_unaligned ((__m128i*)src);
- xmm_dst = load_128_aligned ((__m128i*)dst);
-
- unpack_128_2x128 (xmm_src, &xmm_src_lo, &xmm_src_hi);
- unpack_128_2x128 (xmm_dst, &xmm_dst_lo, &xmm_dst_hi);
- expand_alpha_2x128 (xmm_src_lo, xmm_src_hi,
- &xmm_alpha_lo, &xmm_alpha_hi);
-
- in_over_2x128 (&xmm_src_lo, &xmm_src_hi,
- &xmm_alpha_lo, &xmm_alpha_hi,
- &xmm_mask, &xmm_mask,
- &xmm_dst_lo, &xmm_dst_hi);
-
- save_128_aligned (
- (__m128i*)dst, pack_2x128_128 (xmm_dst_lo, xmm_dst_hi));
+ if (!is_zero (xmm_src))
+ {
+ xmm_dst = load_128_aligned ((__m128i*)dst);
+
+ unpack_128_2x128 (xmm_src, &xmm_src_lo, &xmm_src_hi);
+ unpack_128_2x128 (xmm_dst, &xmm_dst_lo, &xmm_dst_hi);
+ expand_alpha_2x128 (xmm_src_lo, xmm_src_hi,
+ &xmm_alpha_lo, &xmm_alpha_hi);
+
+ in_over_2x128 (&xmm_src_lo, &xmm_src_hi,
+ &xmm_alpha_lo, &xmm_alpha_hi,
+ &xmm_mask, &xmm_mask,
+ &xmm_dst_lo, &xmm_dst_hi);
+
+ save_128_aligned (
+ (__m128i*)dst, pack_2x128_128 (xmm_dst_lo, xmm_dst_hi));
+ }
+
dst += 4;
src += 4;
w -= 4;
@@ -3090,16 +3098,21 @@ sse2_composite_over_8888_n_8888 (pixman_implementation_t *imp, while (w)
{
uint32_t s = *src++;
- uint32_t d = *dst;
- __m64 ms = unpack_32_1x64 (s);
- __m64 alpha = expand_alpha_1x64 (ms);
- __m64 mask = _mm_movepi64_pi64 (xmm_mask);
- __m64 dest = unpack_32_1x64 (d);
-
- *dst++ = pack_1x64_32 (
- in_over_1x64 (&ms, &alpha, &mask, &dest));
+ if (s)
+ {
+ uint32_t d = *dst;
+
+ __m64 ms = unpack_32_1x64 (s);
+ __m64 alpha = expand_alpha_1x64 (ms);
+ __m64 mask = _mm_movepi64_pi64 (xmm_mask);
+ __m64 dest = unpack_32_1x64 (d);
+
+ *dst = pack_1x64_32 (
+ in_over_1x64 (&ms, &alpha, &mask, &dest));
+ }
+ dst++;
w--;
}
}
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