static void xfer_1(SkBlendMode mode, uint64_t dst[], const SkPM4f* src, int count, const SkAlpha aa[]) { SkXfermodeProc4f proc = SkXfermode::GetProc4f(mode); SkPM4f d; if (aa) { for (int i = 0; i < count; ++i) { Sk4f d4 = SkHalfToFloat_finite_ftz(dst[i]); d4.store(d.fVec); Sk4f r4 = Sk4f::Load(proc(*src, d).fVec); SkFloatToHalf_finite_ftz(lerp_by_coverage(r4, d4, aa[i])).store(&dst[i]); } } else { for (int i = 0; i < count; ++i) { SkHalfToFloat_finite_ftz(dst[i]).store(d.fVec); Sk4f r4 = Sk4f::Load(proc(*src, d).fVec); SkFloatToHalf_finite_ftz(r4).store(&dst[i]); } } }
static void xfer_n(const SkXfermode* xfer, uint64_t dst[], const SkPM4f src[], int count, const SkAlpha aa[]) { SkXfermodeProc4f proc = xfer->getProc4f(); SkPM4f d; if (aa) { for (int i = 0; i < count; ++i) { Sk4f d4 = SkHalfToFloat_finite_ftz(dst[i]); d4.store(d.fVec); Sk4f r4 = Sk4f::Load(proc(src[i], d).fVec); SkFloatToHalf_finite_ftz(lerp_by_coverage(r4, d4, aa[i])).store(&dst[i]); } } else { for (int i = 0; i < count; ++i) { SkHalfToFloat_finite_ftz(dst[i]).store(d.fVec); Sk4f r4 = Sk4f::Load(proc(src[i], d).fVec); SkFloatToHalf_finite_ftz(r4).store(&dst[i]); } } }
static void clear(const SkXfermode*, uint64_t dst[], const SkPM4f*, int count, const SkAlpha aa[]) { if (aa) { for (int i = 0; i < count; ++i) { if (aa[i]) { const Sk4f d4 = SkHalfToFloat_finite_ftz(dst[i]); SkFloatToHalf_finite_ftz(d4 * Sk4f((255 - aa[i]) * 1.0f/255)).store(&dst[i]); } } } else { sk_memset64(dst, 0, count); } }
static void srcover_n(const SkXfermode*, uint64_t dst[], const SkPM4f src[], int count, const SkAlpha aa[]) { for (int i = 0; i < count; ++i) { Sk4f s = Sk4f::Load(src+i), d = SkHalfToFloat_finite_ftz(dst[i]), r = s + d*(1.0f - SkNx_shuffle<3,3,3,3>(s)); if (aa) { r = lerp_by_coverage(r, d, aa[i]); } SkFloatToHalf_finite_ftz(r).store(&dst[i]); } }
static void src_1(SkBlendMode, uint64_t dst[], const SkPM4f* src, int count, const SkAlpha aa[]) { const Sk4f s4 = Sk4f::Load(src->fVec); if (aa) { for (int i = 0; i < count; ++i) { const Sk4f d4 = SkHalfToFloat_finite_ftz(dst[i]); SkFloatToHalf_finite_ftz(lerp_by_coverage(s4, d4, aa[i])).store(&dst[i]); } } else { uint64_t s4h; SkFloatToHalf_finite_ftz(s4).store(&s4h); sk_memset64(dst, s4h, count); } }
static void srcover_1(const SkXfermode*, uint64_t dst[], const SkPM4f* src, int count, const SkAlpha aa[]) { const Sk4f s4 = Sk4f::Load(src->fVec); const Sk4f dst_scale = Sk4f(1 - get_alpha(s4)); for (int i = 0; i < count; ++i) { const Sk4f d4 = SkHalfToFloat_finite_ftz(dst[i]); const Sk4f r4 = s4 + d4 * dst_scale; if (aa) { SkFloatToHalf_finite_ftz(lerp_by_coverage(r4, d4, aa[i])).store(&dst[i]); } else { SkFloatToHalf_finite_ftz(r4).store(&dst[i]); } } }
static void src_n(SkBlendMode, uint64_t dst[], const SkPM4f src[], int count, const SkAlpha aa[]) { if (aa) { for (int i = 0; i < count; ++i) { const Sk4f s4 = Sk4f::Load(src[i].fVec); const Sk4f d4 = SkHalfToFloat_finite_ftz(dst[i]); SkFloatToHalf_finite_ftz(lerp_by_coverage(s4, d4, aa[i])).store(&dst[i]); } } else { for (int i = 0; i < count; ++i) { const Sk4f s4 = Sk4f::Load(src[i].fVec); SkFloatToHalf_finite_ftz(s4).store(&dst[i]); } } }
DEF_TEST(SkHalfToFloat_finite_ftz, r) { for (uint32_t h = 0; h <= 0xffff; h++) { if (!is_finite(h)) { // _finite_ftz() only works for values that can be represented as a finite half float. continue; } // _finite_ftz() may flush denorms to zero. 0.0f will compare == with both +0.0f and -0.0f. float expected = SkHalfToFloat(h), alternate = is_denorm(h) ? 0.0f : expected; float actual = SkHalfToFloat_finite_ftz(h)[0]; REPORTER_ASSERT(r, actual == expected || actual == alternate); } }
static void clamp_if_necessary(const SkImageInfo& info, void* pixels) { if (kRGBA_F16_SkColorType != info.colorType()) { return; } for (int y = 0; y < info.height(); y++) { for (int x = 0; x < info.width(); x++) { uint64_t pixel = ((uint64_t*) pixels)[y * info.width() + x]; Sk4f rgba = SkHalfToFloat_finite_ftz(pixel); if (kUnpremul_SkAlphaType == info.alphaType()) { rgba = Sk4f::Max(0.0f, Sk4f::Min(rgba, 1.0f)); } else { SkASSERT(kPremul_SkAlphaType == info.alphaType()); rgba = Sk4f::Max(0.0f, Sk4f::Min(rgba, rgba[3])); } SkFloatToHalf_finite_ftz(rgba).store(&pixel); ((uint64_t*) pixels)[y * info.width() + x] = pixel; } } }
static Sk4f Expand(uint64_t x) { return SkHalfToFloat_finite_ftz(x); }