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Unified Diff: src/opts/SkPMFloat_sse.h

Issue 1319413003: Move float<->byte conversions into Sk4f. (Closed) Base URL: https://skia.googlesource.com/skia.git@master
Patch Set: ranges Created 5 years, 4 months ago
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Index: src/opts/SkPMFloat_sse.h
diff --git a/src/opts/SkPMFloat_sse.h b/src/opts/SkPMFloat_sse.h
deleted file mode 100644
index 6a4d5b6b5c1dbbfc9893223ba2ef17e05e9725bc..0000000000000000000000000000000000000000
--- a/src/opts/SkPMFloat_sse.h
+++ /dev/null
@@ -1,65 +0,0 @@
-/*
- * Copyright 2015 Google Inc.
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-
-namespace { // See SkPMFloat.h
-
-inline SkPMFloat::SkPMFloat(SkPMColor c) {
- SkPMColorAssert(c);
-#if SK_CPU_SSE_LEVEL >= SK_CPU_SSE_LEVEL_SSSE3
- const char _ = ~0; // Zero these bytes.
- __m128i fix8 = _mm_cvtsi32_si128((int)c),
- fix8_32 = _mm_shuffle_epi8(fix8, _mm_setr_epi8(0,_,_,_, 1,_,_,_, 2,_,_,_, 3,_,_,_));
-#else
- __m128i fix8 = _mm_cvtsi32_si128((int)c),
- fix8_16 = _mm_unpacklo_epi8 (fix8, _mm_setzero_si128()),
- fix8_32 = _mm_unpacklo_epi16(fix8_16, _mm_setzero_si128());
-#endif
- fVec = _mm_mul_ps(_mm_cvtepi32_ps(fix8_32), _mm_set1_ps(1.0f / 255));
- SkASSERT(this->isValid());
-}
-
-inline SkPMColor SkPMFloat::round() const {
- // We don't use _mm_cvtps_epi32, because we want precise control over how 0.5 rounds (up).
- __m128 scaled = _mm_mul_ps(_mm_set1_ps(255), fVec);
- __m128i fix8_32 = _mm_cvttps_epi32(_mm_add_ps(_mm_set1_ps(0.5f), scaled)),
- fix8_16 = _mm_packus_epi16(fix8_32, fix8_32),
- fix8 = _mm_packus_epi16(fix8_16, fix8_16);
- SkPMColor c = _mm_cvtsi128_si32(fix8);
- SkPMColorAssert(c);
- return c;
-}
-
-inline Sk4f SkPMFloat::alphas() const {
- static_assert(SK_A32_SHIFT == 24, "");
- return _mm_shuffle_ps(fVec, fVec, 0xff); // Read as 11 11 11 11, copying lane 3 to all lanes.
-}
-
-inline SkPMFloat SkPMFloat::FromOpaqueColor(SkColor c) {
- SkASSERT(SkColorGetA(c) == 0xFF);
- __m128i fix8 = _mm_cvtsi32_si128((int)c);
-#if SK_CPU_SSE_LEVEL >= SK_CPU_SSE_LEVEL_SSSE3
- const char _ = ~0; // Zero these bytes.
- __m128i fix8_32 = _mm_shuffle_epi8(fix8,
- #if defined(SK_PMCOLOR_IS_BGRA)
- _mm_setr_epi8(0,_,_,_, 1,_,_,_, 2,_,_,_, 3,_,_,_)
- #else
- _mm_setr_epi8(2,_,_,_, 1,_,_,_, 0,_,_,_, 3,_,_,_)
- #endif
- );
-#else
- __m128i fix8_16 = _mm_unpacklo_epi8 (fix8 , _mm_setzero_si128()),
- fix8_32 = _mm_unpacklo_epi16(fix8_16, _mm_setzero_si128());
- #if defined(SK_PMCOLOR_IS_RGBA)
- fix8_32 = _mm_shuffle_epi32(fix8_32, 0xC6); // C6 == 11 00 01 10, i.e swap lanes 0 and 2.
- #endif
-#endif
- SkPMFloat pmf = Sk4f(_mm_mul_ps(_mm_cvtepi32_ps(fix8_32), _mm_set1_ps(1.0f/255)));
- SkASSERT(pmf.isValid());
- return pmf;
-}
-
-} // namespace
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