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authorGravatar mtklein <mtklein@chromium.org>2016-07-14 11:02:09 -0700
committerGravatar Commit bot <commit-bot@chromium.org>2016-07-14 11:02:09 -0700
commit3296bee70d074bb8094b3229dbe12fa016657e90 (patch)
treea6dc47b3805301e3416e3b9a2e361ac9d0217f15 /src/effects/gradients
parent7cf36ccb441956e9e35bc4c9b08bdf8bafd9d4bb (diff)
Expand _01 half<->float limitation to _finite. Simplify.
It's become clear we need to sometimes deal with values <0 or >1. I'm not yet convinced we care about NaN or +-inf. We had some fairly clever tricks and optimizations here for NEON and SSE. I've thrown them out in favor of a single implementation. If we find the specializations mattered, we can certainly figure out how to extend them to this new range/domain. This happens to add a vectorized float -> half for ARMv7, which was missing from the _01 version. (The SSE strategy was not portable to platforms that flush denorm floats to zero.) I've tested the full float range for FloatToHalf on my desktop and a 5x. BUG=skia: GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2145663003 CQ_INCLUDE_TRYBOTS=client.skia:Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Release-SKNX_NO_SIMD-Trybot;master.client.skia:Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Release-SKNX_NO_SIMD-Trybot Review-Url: https://codereview.chromium.org/2145663003
Diffstat (limited to 'src/effects/gradients')
-rw-r--r--src/effects/gradients/Sk4fGradientPriv.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/src/effects/gradients/Sk4fGradientPriv.h b/src/effects/gradients/Sk4fGradientPriv.h
index ae6fe7ce46..68e95a63d9 100644
--- a/src/effects/gradients/Sk4fGradientPriv.h
+++ b/src/effects/gradients/Sk4fGradientPriv.h
@@ -143,11 +143,11 @@ struct DstTraits<DstType::F16, premul> {
}
static void store(const Sk4f& c, Type* dst) {
- *dst = SkFloatToHalf_01(PM::apply(c));
+ *dst = SkFloatToHalf_finite(PM::apply(c));
}
static void store(const Sk4f& c, Type* dst, int n) {
- sk_memset64(dst, SkFloatToHalf_01(PM::apply(c)), n);
+ sk_memset64(dst, SkFloatToHalf_finite(PM::apply(c)), n);
}
static void store4x(const Sk4f& c0, const Sk4f& c1,