Roll skia/third_party/skcms fe14a6a..e8bc226 (1 commits)

https://skia.googlesource.com/skcms.git/+log/fe14a6a..e8bc226

2018-04-23 mtklein@chromium.org skcms_OptimizeForSpeed()


The AutoRoll server is located here: https://skcms-skia-roll.skia.org

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+/master/autoroll/README.md

If the roll is causing failures, please contact the current sheriff, who should
be CC'd on the roll, and stop the roller if necessary.



TBR=stani@google.com

Change-Id: Ib0c40a1dc5314ee6ca18da6ddac9895977c12bdc
Reviewed-on: https://skia-review.googlesource.com/123072
Reviewed-by: skcms-skia-autoroll <skcms-skia-autoroll@skia-buildbots.google.com.iam.gserviceaccount.com>
Commit-Queue: skcms-skia-autoroll <skcms-skia-autoroll@skia-buildbots.google.com.iam.gserviceaccount.com>

1 files changed, 10 insertions, 0 deletions

diff --git a/third_party/skcms/src/Transform_inl.h b/third_party/skcms/src/Transform_inl.h
index aba8b7ea16..bc3cc1489d 100644
--- a/third_party/skcms/src/Transform_inl.h
+++ b/third_party/skcms/src/Transform_inl.h
@@ -239,6 +239,12 @@ SI ATTR F NS(apply_transfer_function_)(const skcms_TransferFunction* tf, F x) {
 }
 #define apply_transfer_function NS(apply_transfer_function_)
 
+SI ATTR F NS(apply_tf13_)(const skcms_TF13* tf, F x) {
+    F sign = (F)if_then_else(x < 0, -F1, F1);
+    return x*(x*(x*tf->A + sign*tf->B) + (1 - tf->A - tf->B) );
+}
+#define apply_tf13 NS(apply_tf13_)
+
 // Strided loads and stores of N values, starting from p.
 #if N == 1
     #define LOAD_3(T, p) (T)(p)[0]
@@ -840,6 +846,10 @@ static void NS(exec_ops)(const Op* ops, const void** args,
             case Op_tf_b:{ b = apply_transfer_function(*args++, b); } break;
             case Op_tf_a:{ a = apply_transfer_function(*args++, a); } break;
 
+            case Op_tf13_r:{ r = apply_tf13(*args++, r); } break;
+            case Op_tf13_g:{ g = apply_tf13(*args++, g); } break;
+            case Op_tf13_b:{ b = apply_tf13(*args++, b); } break;
+
             case Op_table_8_r: { r = NS(table_8_ )(*args++, r); } break;
             case Op_table_8_g: { g = NS(table_8_ )(*args++, g); } break;
             case Op_table_8_b: { b = NS(table_8_ )(*args++, b); } break;