aboutsummaryrefslogtreecommitdiffhomepage
path: root/src/opts/SkBlitRow_opts_SSE4.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'src/opts/SkBlitRow_opts_SSE4.cpp')
-rw-r--r--src/opts/SkBlitRow_opts_SSE4.cpp67
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