Remove more headers from include/gpu

TBR=bsalomon@google.com

Change-Id: I93b28cfcb4d7b50c12e24ea81faab680bccce9ef
Reviewed-on: https://skia-review.googlesource.com/14036
Commit-Queue: Robert Phillips <robertphillips@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>

1 files changed, 45 insertions, 0 deletions

diff --git a/src/gpu/GrColorSpaceXform.h b/src/gpu/GrColorSpaceXform.h
new file mode 100644
index 0000000000..68cd3b0563
--- /dev/null
+++ b/src/gpu/GrColorSpaceXform.h
@@ -0,0 +1,45 @@
+/*
+ * Copyright 2016 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#ifndef GrColorSpaceXform_DEFINED
+#define GrColorSpaceXform_DEFINED
+
+#include "GrColor.h"
+#include "SkMatrix44.h"
+#include "SkRefCnt.h"
+
+class SkColorSpace;
+
+ /**
+  * Represents a color gamut transformation (as a 4x4 color matrix)
+  */
+class GrColorSpaceXform : public SkRefCnt {
+public:
+    GrColorSpaceXform(const SkMatrix44& srcToDst);
+
+    static sk_sp<GrColorSpaceXform> Make(const SkColorSpace* src, const SkColorSpace* dst);
+
+    const SkMatrix44& srcToDst() const { return fSrcToDst; }
+
+    /**
+     * GrGLSLFragmentProcessor::GenKey() must call this and include the returned value in its
+     * computed key.
+     */
+    static uint32_t XformKey(const GrColorSpaceXform* xform) {
+        // Code generation changes if there is an xform, but it otherwise constant
+        return SkToBool(xform) ? 1 : 0;
+    }
+
+    static bool Equals(const GrColorSpaceXform* a, const GrColorSpaceXform* b);
+
+    GrColor4f apply(const GrColor4f& srcColor);
+
+private:
+    SkMatrix44 fSrcToDst;
+};
+
+#endif