mix-blend-mode implementation for accelerated layers

webkit/renderer/compositor_bindings/web_blend_mode.h

Index: webkit/renderer/compositor_bindings/web_blend_mode.h
diff --git a/webkit/renderer/compositor_bindings/web_blend_mode.h b/webkit/renderer/compositor_bindings/web_blend_mode.h
new file mode 100644
index 0000000000000000000000000000000000000000..bdd63495991697293eedb32e9cfc0a37d4c42fea
--- /dev/null
+++ b/webkit/renderer/compositor_bindings/web_blend_mode.h
@@ -0,0 +1,60 @@
+// Copyright 2013 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef WEBKIT_RENDERER_COMPOSITOR_BINDINGS_WEB_BLEND_MODE_H_
+#define WEBKIT_RENDERER_COMPOSITOR_BINDINGS_WEB_BLEND_MODE_H_
+
+#include "third_party/WebKit/public/platform/WebBlendMode.h"
+
+namespace webkit {
+
+inline SkXfermode::Mode BlendModeToSkia(WebKit::WebBlendMode blendMode) {

[enne (OOO), 2013/10/11 18:14:35]

blend_mode

[rosca, 2013/10/16 14:54:47]

Done.

+    switch (blendMode) {
+    case WebKit::WebBlendModeNormal:        return SkXfermode::kSrcOver_Mode;

[enne (OOO), 2013/10/11 18:14:35]

Just git cl format this patch please.  Vertical aligning is not something I want
to have to persist.

(Many other parts of your patch are mis-indented and git cl format will clean
that up for you too.)

[rosca, 2013/10/16 14:54:47]

Done.

+    case WebKit::WebBlendModeMultiply:      return SkXfermode::kMultiply_Mode;
+    case WebKit::WebBlendModeScreen:        return SkXfermode::kScreen_Mode;
+    case WebKit::WebBlendModeOverlay:       return SkXfermode::kOverlay_Mode;
+    case WebKit::WebBlendModeDarken:        return SkXfermode::kDarken_Mode;
+    case WebKit::WebBlendModeLighten:       return SkXfermode::kLighten_Mode;
+    case WebKit::WebBlendModeColorDodge:    return SkXfermode::kColorDodge_Mode;
+    case WebKit::WebBlendModeColorBurn:     return SkXfermode::kColorBurn_Mode;
+    case WebKit::WebBlendModeHardLight:     return SkXfermode::kHardLight_Mode;
+    case WebKit::WebBlendModeSoftLight:     return SkXfermode::kSoftLight_Mode;
+    case WebKit::WebBlendModeDifference:    return SkXfermode::kDifference_Mode;
+    case WebKit::WebBlendModeExclusion:     return SkXfermode::kExclusion_Mode;
+    case WebKit::WebBlendModeHue:           return SkXfermode::kHue_Mode;
+    case WebKit::WebBlendModeSaturation:    return SkXfermode::kSaturation_Mode;
+    case WebKit::WebBlendModeColor:         return SkXfermode::kColor_Mode;
+    case WebKit::WebBlendModeLuminosity:    return SkXfermode::kLuminosity_Mode;
+    default: NOTREACHED();
+    }
+    return SkXfermode::kSrcOver_Mode;
+}
+
+inline WebKit::WebBlendMode BlendModeFromSkia(SkXfermode::Mode blendMode) {

[enne (OOO), 2013/10/11 18:14:35]

blend_mode

[rosca, 2013/10/16 14:54:47]

Done.

+    switch (blendMode) {
+    case SkXfermode::kSrcOver_Mode:     return WebKit::WebBlendModeNormal;
+    case SkXfermode::kMultiply_Mode:    return WebKit::WebBlendModeMultiply;
+    case SkXfermode::kScreen_Mode:      return WebKit::WebBlendModeScreen;
+    case SkXfermode::kOverlay_Mode:     return WebKit::WebBlendModeOverlay;
+    case SkXfermode::kDarken_Mode:      return WebKit::WebBlendModeDarken;
+    case SkXfermode::kLighten_Mode:     return WebKit::WebBlendModeLighten;
+    case SkXfermode::kColorDodge_Mode:  return WebKit::WebBlendModeColorDodge;
+    case SkXfermode::kColorBurn_Mode:   return WebKit::WebBlendModeColorBurn;
+    case SkXfermode::kHardLight_Mode:   return WebKit::WebBlendModeHardLight;
+    case SkXfermode::kSoftLight_Mode:   return WebKit::WebBlendModeSoftLight;
+    case SkXfermode::kDifference_Mode:  return WebKit::WebBlendModeDifference;
+    case SkXfermode::kExclusion_Mode:   return WebKit::WebBlendModeExclusion;
+    case SkXfermode::kHue_Mode:         return WebKit::WebBlendModeHue;
+    case SkXfermode::kSaturation_Mode:  return WebKit::WebBlendModeSaturation;
+    case SkXfermode::kColor_Mode:       return WebKit::WebBlendModeColor;
+    case SkXfermode::kLuminosity_Mode:  return WebKit::WebBlendModeLuminosity;
+    default: NOTREACHED();
+    }
+    return WebKit::WebBlendModeNormal;
+}
+
+}  // namespace webkit
+
+#endif  // WEBKIT_RENDERER_COMPOSITOR_BINDINGS_WEB_BLEND_MODE_H_