#include <emmintrin.h>
-static inline __m128i SkMul16ShiftRound_SSE(__m128i a, __m128i b, int shift) {
+// Because no _mm_mul_epi32() in SSE2, we emulate it here.
+// Multiplies 4 32-bit integers from a by 4 32-bit intergers from b.
+// The 4 multiplication results should be represented within 32-bit
+// integers, otherwise they would be overflow.
+static inline __m128i Multiply32_SSE2(const __m128i& a, const __m128i& b) {
+ // Calculate results of a0 * b0 and a2 * b2.
+ __m128i r1 = _mm_mul_epu32(a, b);
+ // Calculate results of a1 * b1 and a3 * b3.
+ __m128i r2 = _mm_mul_epu32(_mm_srli_si128(a, 4), _mm_srli_si128(b, 4));
+ // Shuffle results to [63..0] and interleave the results.
+ __m128i r = _mm_unpacklo_epi32(_mm_shuffle_epi32(r1, _MM_SHUFFLE(0,0,2,0)),
+ _mm_shuffle_epi32(r2, _MM_SHUFFLE(0,0,2,0)));
+ return r;
+}
+
+static inline __m128i SkAlpha255To256_SSE2(const __m128i& alpha) {
+ return _mm_add_epi32(alpha, _mm_set1_epi32(1));
+}
+
+// See #define SkAlphaMulAlpha(a, b) SkMulDiv255Round(a, b) in SkXfermode.cpp.
+static inline __m128i SkAlphaMulAlpha_SSE2(const __m128i& a,
+ const __m128i& b) {
+ __m128i prod = _mm_mullo_epi16(a, b);
+ prod = _mm_add_epi32(prod, _mm_set1_epi32(128));
+ prod = _mm_add_epi32(prod, _mm_srli_epi32(prod, 8));
+ prod = _mm_srli_epi32(prod, 8);
+
+ return prod;
+}
+
+// Portable version SkAlphaMulQ is in SkColorPriv.h.
+static inline __m128i SkAlphaMulQ_SSE2(const __m128i& c, const __m128i& scale) {
+ __m128i mask = _mm_set1_epi32(gMask_00FF00FF);
+ __m128i s = _mm_or_si128(_mm_slli_epi32(scale, 16), scale);
+
+ // uint32_t rb = ((c & mask) * scale) >> 8
+ __m128i rb = _mm_and_si128(mask, c);
+ rb = _mm_mullo_epi16(rb, s);
+ rb = _mm_srli_epi16(rb, 8);
+
+ // uint32_t ag = ((c >> 8) & mask) * scale
+ __m128i ag = _mm_srli_epi16(c, 8);
+ ag = _mm_and_si128(ag, mask);
+ ag = _mm_mullo_epi16(ag, s);
+
+ // (rb & mask) | (ag & ~mask)
+ rb = _mm_and_si128(mask, rb);
+ ag = _mm_andnot_si128(mask, ag);
+ return _mm_or_si128(rb, ag);
+}
+
+static inline __m128i SkGetPackedA32_SSE2(const __m128i& src) {
+ __m128i a = _mm_slli_epi32(src, (24 - SK_A32_SHIFT));
+ return _mm_srli_epi32(a, 24);
+}
+
+static inline __m128i SkGetPackedR32_SSE2(const __m128i& src) {
+ __m128i r = _mm_slli_epi32(src, (24 - SK_R32_SHIFT));
+ return _mm_srli_epi32(r, 24);
+}
+
+static inline __m128i SkGetPackedG32_SSE2(const __m128i& src) {
+ __m128i g = _mm_slli_epi32(src, (24 - SK_G32_SHIFT));
+ return _mm_srli_epi32(g, 24);
+}
+
+static inline __m128i SkGetPackedB32_SSE2(const __m128i& src) {
+ __m128i b = _mm_slli_epi32(src, (24 - SK_B32_SHIFT));
+ return _mm_srli_epi32(b, 24);
+}
+
+static inline __m128i SkMul16ShiftRound_SSE2(const __m128i& a,
+ const __m128i& b, int shift) {
__m128i prod = _mm_mullo_epi16(a, b);
prod = _mm_add_epi16(prod, _mm_set1_epi16(1 << (shift - 1)));
prod = _mm_add_epi16(prod, _mm_srli_epi16(prod, shift));
return prod;
}
-static inline __m128i SkPackRGB16_SSE(__m128i r, __m128i g, __m128i b) {
- r = _mm_slli_epi16(r, SK_R16_SHIFT);
- g = _mm_slli_epi16(g, SK_G16_SHIFT);
- b = _mm_slli_epi16(b, SK_B16_SHIFT);
+static inline __m128i SkPackRGB16_SSE2(const __m128i& r,
+ const __m128i& g, const __m128i& b) {
+ __m128i dr = _mm_slli_epi16(r, SK_R16_SHIFT);
+ __m128i dg = _mm_slli_epi16(g, SK_G16_SHIFT);
+ __m128i db = _mm_slli_epi16(b, SK_B16_SHIFT);
+
+ __m128i c = _mm_or_si128(dr, dg);
+ return _mm_or_si128(c, db);
+}
+
+static inline __m128i SkPackARGB32_SSE2(const __m128i& a, const __m128i& r,
+ const __m128i& g, const __m128i& b) {
+ __m128i da = _mm_slli_epi32(a, SK_A32_SHIFT);
+ __m128i dr = _mm_slli_epi32(r, SK_R32_SHIFT);
+ __m128i dg = _mm_slli_epi32(g, SK_G32_SHIFT);
+ __m128i db = _mm_slli_epi32(b, SK_B32_SHIFT);
+
+ __m128i c = _mm_or_si128(da, dr);
+ c = _mm_or_si128(c, dg);
+ return _mm_or_si128(c, db);
+}
+
+static inline __m128i SkPacked16ToR32_SSE2(const __m128i& src) {
+ __m128i r = _mm_srli_epi32(src, SK_R16_SHIFT);
+ r = _mm_and_si128(r, _mm_set1_epi32(SK_R16_MASK));
+ r = _mm_or_si128(_mm_slli_epi32(r, (8 - SK_R16_BITS)),
+ _mm_srli_epi32(r, (2 * SK_R16_BITS - 8)));
+
+ return r;
+}
+
+static inline __m128i SkPacked16ToG32_SSE2(const __m128i& src) {
+ __m128i g = _mm_srli_epi32(src, SK_G16_SHIFT);
+ g = _mm_and_si128(g, _mm_set1_epi32(SK_G16_MASK));
+ g = _mm_or_si128(_mm_slli_epi32(g, (8 - SK_G16_BITS)),
+ _mm_srli_epi32(g, (2 * SK_G16_BITS - 8)));
+
+ return g;
+}
+
+static inline __m128i SkPacked16ToB32_SSE2(const __m128i& src) {
+ __m128i b = _mm_srli_epi32(src, SK_B16_SHIFT);
+ b = _mm_and_si128(b, _mm_set1_epi32(SK_B16_MASK));
+ b = _mm_or_si128(_mm_slli_epi32(b, (8 - SK_B16_BITS)),
+ _mm_srli_epi32(b, (2 * SK_B16_BITS - 8)));
+
+ return b;
+}
+
+static inline __m128i SkPixel16ToPixel32_SSE2(const __m128i& src) {
+ __m128i r = SkPacked16ToR32_SSE2(src);
+ __m128i g = SkPacked16ToG32_SSE2(src);
+ __m128i b = SkPacked16ToB32_SSE2(src);
+
+ return SkPackARGB32_SSE2(_mm_set1_epi32(0xFF), r, g, b);
+}
+
+static inline __m128i SkPixel32ToPixel16_ToU16_SSE2(const __m128i& src_pixel1,
+ const __m128i& src_pixel2) {
+ // Calculate result r.
+ __m128i r1 = _mm_srli_epi32(src_pixel1,
+ SK_R32_SHIFT + (8 - SK_R16_BITS));
+ r1 = _mm_and_si128(r1, _mm_set1_epi32(SK_R16_MASK));
+ __m128i r2 = _mm_srli_epi32(src_pixel2,
+ SK_R32_SHIFT + (8 - SK_R16_BITS));
+ r2 = _mm_and_si128(r2, _mm_set1_epi32(SK_R16_MASK));
+ __m128i r = _mm_packs_epi32(r1, r2);
+
+ // Calculate result g.
+ __m128i g1 = _mm_srli_epi32(src_pixel1,
+ SK_G32_SHIFT + (8 - SK_G16_BITS));
+ g1 = _mm_and_si128(g1, _mm_set1_epi32(SK_G16_MASK));
+ __m128i g2 = _mm_srli_epi32(src_pixel2,
+ SK_G32_SHIFT + (8 - SK_G16_BITS));
+ g2 = _mm_and_si128(g2, _mm_set1_epi32(SK_G16_MASK));
+ __m128i g = _mm_packs_epi32(g1, g2);
+
+ // Calculate result b.
+ __m128i b1 = _mm_srli_epi32(src_pixel1,
+ SK_B32_SHIFT + (8 - SK_B16_BITS));
+ b1 = _mm_and_si128(b1, _mm_set1_epi32(SK_B16_MASK));
+ __m128i b2 = _mm_srli_epi32(src_pixel2,
+ SK_B32_SHIFT + (8 - SK_B16_BITS));
+ b2 = _mm_and_si128(b2, _mm_set1_epi32(SK_B16_MASK));
+ __m128i b = _mm_packs_epi32(b1, b2);
+
+ // Store 8 16-bit colors in dst.
+ __m128i d_pixel = SkPackRGB16_SSE2(r, g, b);
- __m128i c = _mm_or_si128(r, g);
- return _mm_or_si128(c, b);
+ return d_pixel;
}
-#endif//SkColor_opts_SSE2_DEFINED
+#endif // SkColor_opts_SSE2_DEFINED
projects / platform / framework / web / crosswalk.git / blobdiff