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Remove excessive unrolling in fbCompositeSrc_x888x8x8888() and fix bug where 

the source alpha was used instead of 0xff.
This commit is contained in:
Soren Sandmann Pedersen 2007-05-17 12:59:24 -04:00
parent 546465ee6a
commit 0375009a97
1 changed files with 20 additions and 61 deletions
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79
fb/fbmmx.c
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@ -295,6 +295,14 @@ in (__m64 src,
return pix_multiply (src, mask);
}
static inline __m64
in_over_full_src_alpha (__m64 src, __m64 mask, __m64 dest)
{
src = _mm_or_si64 (src, MC(full_alpha));
return over(in (src, mask), mask, dest);
}
#ifndef _MSC_VER
static inline __m64
in_over (__m64 src,
@ -1299,7 +1307,7 @@ fbCompositeSrc_x888x8x8888mmx (CARD8 op,
while (w && (unsigned long)dst & 7)
{
__m64 s = load8888 (*src);
__m64 s = load8888 (*src | 0xff000000);
__m64 d = load8888 (*dst);
*dst = store8888 (in_over (s, srca, vmask, d));
@ -1309,75 +1317,26 @@ fbCompositeSrc_x888x8x8888mmx (CARD8 op,
src++;
}
while (w >= 16)
while (w >= 2)
{
__m64 vd0 = *(__m64 *)(dst + 0);
__m64 vd1 = *(__m64 *)(dst + 2);
__m64 vd2 = *(__m64 *)(dst + 4);
__m64 vd3 = *(__m64 *)(dst + 6);
__m64 vd4 = *(__m64 *)(dst + 8);
__m64 vd5 = *(__m64 *)(dst + 10);
__m64 vd6 = *(__m64 *)(dst + 12);
__m64 vd7 = *(__m64 *)(dst + 14);
__m64 vs0 = *(__m64 *)(src + 0);
__m64 vs1 = *(__m64 *)(src + 2);
__m64 vs2 = *(__m64 *)(src + 4);
__m64 vs3 = *(__m64 *)(src + 6);
__m64 vs4 = *(__m64 *)(src + 8);
__m64 vs5 = *(__m64 *)(src + 10);
__m64 vs6 = *(__m64 *)(src + 12);
__m64 vs7 = *(__m64 *)(src + 14);
__m64 vd0 = *(__m64 *)(dst);
__m64 vs0 = *(__m64 *)(src);
vd0 = pack8888 (
in_over (expand8888 (vs0, 0), srca, vmask, expand8888 (vd0, 0)),
in_over (expand8888 (vs0, 1), srca, vmask, expand8888 (vd0, 1)));
in_over_full_src_alpha (expand8888 (vs0, 0), vmask, expand8888 (vd0, 0)),
in_over_full_src_alpha (expand8888 (vs0, 1), vmask, expand8888 (vd0, 1)));
vd1 = pack8888 (
in_over (expand8888 (vs1, 0), srca, vmask, expand8888 (vd1, 0)),
in_over (expand8888 (vs1, 1), srca, vmask, expand8888 (vd1, 1)));
*(__m64 *)(dst) = vd0;
vd2 = pack8888 (
in_over (expand8888 (vs2, 0), srca, vmask, expand8888 (vd2, 0)),
in_over (expand8888 (vs2, 1), srca, vmask, expand8888 (vd2, 1)));
vd3 = pack8888 (
in_over (expand8888 (vs3, 0), srca, vmask, expand8888 (vd3, 0)),
in_over (expand8888 (vs3, 1), srca, vmask, expand8888 (vd3, 1)));
vd4 = pack8888 (
in_over (expand8888 (vs4, 0), srca, vmask, expand8888 (vd4, 0)),
in_over (expand8888 (vs4, 1), srca, vmask, expand8888 (vd4, 1)));
vd5 = pack8888 (
in_over (expand8888 (vs5, 0), srca, vmask, expand8888 (vd5, 0)),
in_over (expand8888 (vs5, 1), srca, vmask, expand8888 (vd5, 1)));
vd6 = pack8888 (
in_over (expand8888 (vs6, 0), srca, vmask, expand8888 (vd6, 0)),
in_over (expand8888 (vs6, 1), srca, vmask, expand8888 (vd6, 1)));
vd7 = pack8888 (
in_over (expand8888 (vs7, 0), srca, vmask, expand8888 (vd7, 0)),
in_over (expand8888 (vs7, 1), srca, vmask, expand8888 (vd7, 1)));
*(__m64 *)(dst + 0) = vd0;
*(__m64 *)(dst + 2) = vd1;
*(__m64 *)(dst + 4) = vd2;
*(__m64 *)(dst + 6) = vd3;
*(__m64 *)(dst + 8) = vd4;
*(__m64 *)(dst + 10) = vd5;
*(__m64 *)(dst + 12) = vd6;
*(__m64 *)(dst + 14) = vd7;
w -= 16;
dst += 16;
src += 16;
w -= 2;
dst += 2;
src += 2;
}
while (w)
{
__m64 s = load8888 (*src);
__m64 s = load8888 (*src | 0xff000000);
__m64 d = load8888 (*dst);
*dst = store8888 (in_over (s, srca, vmask, d));