diff options
Diffstat (limited to 'src/opts/SkBlitRow_opts_SSE4.cpp')
-rw-r--r-- | src/opts/SkBlitRow_opts_SSE4.cpp | 67 |
1 files changed, 0 insertions, 67 deletions
diff --git a/src/opts/SkBlitRow_opts_SSE4.cpp b/src/opts/SkBlitRow_opts_SSE4.cpp deleted file mode 100644 index ae92a77eb2..0000000000 --- a/src/opts/SkBlitRow_opts_SSE4.cpp +++ /dev/null @@ -1,67 +0,0 @@ -#include "SkBlitRow_opts_SSE4.h" - -// Some compilers can't compile SSSE3 or SSE4 intrinsics. We give them stub methods. -// The stubs should never be called, so we make them crash just to confirm that. -#if SK_CPU_SSE_LEVEL < SK_CPU_SSE_LEVEL_SSE41 -void S32A_Opaque_BlitRow32_SSE4(SkPMColor* SK_RESTRICT, const SkPMColor* SK_RESTRICT, int, U8CPU) { - sk_throw(); -} - -#else - -#include <emmintrin.h> // SSE2: Most _mm_foo() in this file. -#include <smmintrin.h> // SSE4.1: _mm_testz_si128 and _mm_testc_si128. - -#include "SkColorPriv.h" -#include "SkColor_opts_SSE2.h" - -void S32A_Opaque_BlitRow32_SSE4(SkPMColor* SK_RESTRICT dst, - const SkPMColor* SK_RESTRICT src, - int count, - U8CPU alpha) { - SkASSERT(alpha == 255); - // As long as we can, we'll work on 16 pixel pairs at once. - int count16 = count / 16; - __m128i* dst4 = (__m128i*)dst; - const __m128i* src4 = (const __m128i*)src; - - for (int i = 0; i < count16 * 4; i += 4) { - // Load 16 source pixels. - __m128i s0 = _mm_loadu_si128(src4+i+0), - s1 = _mm_loadu_si128(src4+i+1), - s2 = _mm_loadu_si128(src4+i+2), - s3 = _mm_loadu_si128(src4+i+3); - - const __m128i alphaMask = _mm_set1_epi32(0xFF << SK_A32_SHIFT); - const __m128i ORed = _mm_or_si128(s3, _mm_or_si128(s2, _mm_or_si128(s1, s0))); - if (_mm_testz_si128(ORed, alphaMask)) { - // All 16 source pixels are fully transparent. There's nothing to do! - continue; - } - const __m128i ANDed = _mm_and_si128(s3, _mm_and_si128(s2, _mm_and_si128(s1, s0))); - if (_mm_testc_si128(ANDed, alphaMask)) { - // All 16 source pixels are fully opaque. There's no need to read dst or blend it. - _mm_storeu_si128(dst4+i+0, s0); - _mm_storeu_si128(dst4+i+1, s1); - _mm_storeu_si128(dst4+i+2, s2); - _mm_storeu_si128(dst4+i+3, s3); - continue; - } - // The general slow case: do the blend for all 16 pixels. - _mm_storeu_si128(dst4+i+0, SkPMSrcOver_SSE2(s0, _mm_loadu_si128(dst4+i+0))); - _mm_storeu_si128(dst4+i+1, SkPMSrcOver_SSE2(s1, _mm_loadu_si128(dst4+i+1))); - _mm_storeu_si128(dst4+i+2, SkPMSrcOver_SSE2(s2, _mm_loadu_si128(dst4+i+2))); - _mm_storeu_si128(dst4+i+3, SkPMSrcOver_SSE2(s3, _mm_loadu_si128(dst4+i+3))); - } - - // Wrap up the last <= 15 pixels. - SkASSERT(count - (count16*16) <= 15); - for (int i = count16*16; i < count; i++) { - // This check is not really necessarily, but it prevents pointless autovectorization. - if (src[i] & 0xFF000000) { - dst[i] = SkPMSrcOver(src[i], dst[i]); - } - } -} - -#endif |