From a87508008dfa1604baf2d4e39bf44704c00f261c Mon Sep 17 00:00:00 2001 From: Jarred Sumner Date: Sun, 3 Apr 2022 16:34:10 -0700 Subject: skia WIP --- src/deps/skia/include/core/SkCoverageMode.h | 30 +++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) create mode 100644 src/deps/skia/include/core/SkCoverageMode.h (limited to 'src/deps/skia/include/core/SkCoverageMode.h') diff --git a/src/deps/skia/include/core/SkCoverageMode.h b/src/deps/skia/include/core/SkCoverageMode.h new file mode 100644 index 000000000..ea5b73d1a --- /dev/null +++ b/src/deps/skia/include/core/SkCoverageMode.h @@ -0,0 +1,30 @@ +/* + * Copyright 2018 Google Inc. + * + * Use of this source code is governed by a BSD-style license that can be + * found in the LICENSE file. + */ + +#ifndef SkCoverageMode_DEFINED +#define SkCoverageMode_DEFINED + +#include "include/core/SkTypes.h" + +/** + * Describes geometric operations (ala SkRegion::Op) that can be applied to coverage bytes. + * These can be thought of as variants of porter-duff (SkBlendMode) modes, but only applied + * to the alpha channel. + * + * See SkMaskFilter for ways to use these when combining two different masks. + */ +enum class SkCoverageMode { + kUnion, // A ∪ B A+B-A*B + kIntersect, // A ∩ B A*B + kDifference, // A - B A*(1-B) + kReverseDifference, // B - A B*(1-A) + kXor, // A ⊕ B A+B-2*A*B + + kLast = kXor, +}; + +#endif -- cgit v1.2.3