commit 1049d8206120bb86d2a0836820e16ce21d3e467a
author John Stiles <johnstiles@google.com> Fri Aug 13 15:33:17 2021 -0400
committer SkCQ <skcq-be@skia-corp.google.com.iam.gserviceaccount.com> Fri Aug 13 20:57:44 2021 +0000
tree 853c4042e928da1deb3fcd253bf072cf7e1cb606
parent 8a570d2db04763caae6564967690323e6cc97224

Add ES3 Angle and Trigonometry methods to sksl_public.

This adds sinh, cosh, tanh, asinh, acosh, and atanh. We now also support
compile-time optimization for the arc functions.

Change-Id: I688f579b50403db534622b82926aa20d1f445341
Bug: skia:12202
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/439319
Commit-Queue: John Stiles <johnstiles@google.com>
Commit-Queue: Ethan Nicholas <ethannicholas@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
Reviewed-by: Ethan Nicholas <ethannicholas@google.com>

resources/sksl/intrinsics/Atanh.sksl

diff --git a/resources/sksl/intrinsics/Atanh.sksl b/resources/sksl/intrinsics/Atanh.sksl
index c5fc0b3..c8a01ce 100644
--- a/resources/sksl/intrinsics/Atanh.sksl
+++ b/resources/sksl/intrinsics/Atanh.sksl
@@ -1 +1,14 @@
-uniform half a; void main() { sk_FragColor.x = atanh(a); }
+uniform half4 input, expected;
+uniform half4 colorGreen, colorRed;
+
+half4 main(float2 coords) {
+    const half4 constVal1 = half4(0, 0.2449186624037091292, 0.46211715726000975, 0.761594155955764);
+    return (atanh(input.x)        == expected.x     &&
+            atanh(input.xy)       == expected.xy    &&
+            atanh(input.xyz)      == expected.xyz   &&
+            atanh(input.xyzw)     == expected.xyzw  &&
+            atanh(constVal1.x)    == expected.x     &&
+            atanh(constVal1.xy)   == expected.xy    &&
+            atanh(constVal1.xyz)  == expected.xyz   &&
+            atanh(constVal1.xyzw) == expected.xyzw) ? colorGreen : colorRed;
+}