commit 8520e76f053756db28aa510eb7dd5f8af4594760
author Mike Reed <reed@google.com> Thu Apr 30 12:06:23 2020 -0400
committer Skia Commit-Bot <skia-commit-bot@chromium.org> Thu Apr 30 16:52:22 2020 +0000
tree 6eb132f1fd77764f998855ecf5a4b90911777741
parent 1b3f93d2459ef4f12325c9c122a0d6e4f05f70b0

migrate spiral demo from canvaskit

- add atan, fract, dividef, subtractf

Also wants mix(), but I'm still learning how to handle 2 args
functions (e.g. how to support atan(y,x) as well)

Change-Id: Ib9f233cd1c4266110cfea68a7d444f834f875f1f
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/286276
Reviewed-by: Florin Malita <fmalita@chromium.org>
Reviewed-by: Mike Klein <mtklein@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Mike Reed <reed@google.com>

src/sksl/SkSLByteCodeGenerator.cpp

diff --git a/src/sksl/SkSLByteCodeGenerator.cpp b/src/sksl/SkSLByteCodeGenerator.cpp
index 210b54e..60bff34 100644
--- a/src/sksl/SkSLByteCodeGenerator.cpp
+++ b/src/sksl/SkSLByteCodeGenerator.cpp
@@ -1,4 +1,4 @@
-/*
+/*
  * Copyright 2019 Google LLC
  *
  * Use of this source code is governed by a BSD-style license that can be
@@ -43,8 +43,10 @@
     , fContext(*context)
     , fOutput(output)
     , fIntrinsics {
+        { "atan",    ByteCodeInstruction::kATan },
         { "cos",     ByteCodeInstruction::kCos },
         { "dot",     SpecialIntrinsic::kDot },
+        { "fract",   ByteCodeInstruction::kFract },
         { "inverse", ByteCodeInstruction::kInverse2x2 },
         { "sin",     ByteCodeInstruction::kSin },
         { "sqrt",    ByteCodeInstruction::kSqrt },
@@ -217,7 +219,9 @@
         VECTOR_UNARY_OP(kConvertStoF)
         VECTOR_UNARY_OP(kConvertUtoF)
 
+        VECTOR_UNARY_OP(kATan)
         VECTOR_UNARY_OP(kCos)
+        VECTOR_UNARY_OP(kFract)
         VECTOR_UNARY_OP(kSin)
         VECTOR_UNARY_OP(kSqrt)
         VECTOR_UNARY_OP(kTan)
@@ -994,7 +998,9 @@
         }
     } else {
         switch (found->second.fValue.fInstruction) {
+            case ByteCodeInstruction::kATan:
             case ByteCodeInstruction::kCos:
+            case ByteCodeInstruction::kFract:
             case ByteCodeInstruction::kSin:
             case ByteCodeInstruction::kSqrt:
             case ByteCodeInstruction::kTan: