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Unified Diff: src/gpu/effects/GrXfermodeFragmentProcessor.cpp

Issue 1306163005: Added function CreateFrom2Procs() in new namespace GrXfermodeFragmentProcessor (Closed) Base URL: https://skia.googlesource.com/skia@cs3_testcreate
Patch Set: added mode <= kLastCoeffMode checks Created 5 years, 3 months ago
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Index: src/gpu/effects/GrXfermodeFragmentProcessor.cpp
diff --git a/src/gpu/effects/GrXfermodeFragmentProcessor.cpp b/src/gpu/effects/GrXfermodeFragmentProcessor.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..536472a13110562d45cb4ded277e4fc51a05e0a1
--- /dev/null
+++ b/src/gpu/effects/GrXfermodeFragmentProcessor.cpp
@@ -0,0 +1,33 @@
+/*
+ * Copyright 2015 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include "effects/GrXfermodeFragmentProcessor.h"
+
+#include "GrFragmentProcessor.h"
+#include "SkComposeShader.h"
+#include "effects/GrConstColorProcessor.h"
+
+const GrFragmentProcessor* GrXfermodeFragmentProcessor::CreateFrom2Procs(
+ const GrFragmentProcessor* src, const GrFragmentProcessor* dst, SkXfermode::Mode mode) {
+ if (SkXfermode::kLastCoeffMode < mode) {
+ return nullptr;
+ }
+ switch (mode) {
+ case SkXfermode::kClear_Mode:
+ return GrConstColorProcessor::Create(GrColor_TRANS_BLACK,
+ GrConstColorProcessor::kIgnore_InputMode);
+ break;
+ case SkXfermode::kSrc_Mode:
+ return SkRef(src);
+ break;
+ case SkXfermode::kDst_Mode:
+ return SkRef(dst);
+ break;
+ default:
+ return new GrComposeEffect(dst, src, mode);
+ }
+}
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