diff --git a/src/gpu/GrSwizzle.cpp b/src/gpu/GrSwizzle.cpp
new file mode 100644
index 0000000..21fe834
--- /dev/null
+++ b/src/gpu/GrSwizzle.cpp
@@ -0,0 +1,29 @@
+/*
+ * Copyright 2019 Google LLC
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include "src/gpu/GrSwizzle.h"
+#include "src/core/SkRasterPipeline.h"
+
+void GrSwizzle::apply(SkRasterPipeline* pipeline) const {
+    SkASSERT(pipeline);
+    switch (fKey) {
+        case GrSwizzle::RGBA().asKey():
+            return;
+        case GrSwizzle::BGRA().asKey():
+            pipeline->append(SkRasterPipeline::swap_rb);
+            return;
+        default: {
+            GR_STATIC_ASSERT(sizeof(uintptr_t) >= 4 * sizeof(char));
+            // Rather than allocate the 4 control bytes on the heap somewhere, just jam them right
+            // into a uintptr_t context.
+            uintptr_t ctx;
+            memcpy(&ctx, fSwiz, 4 * sizeof(char));
+            pipeline->append(SkRasterPipeline::swizzle, ctx);
+            return;
+        }
+    }
+}