[poc] curve-filter

third_party/WebKit/Source/platform/graphics/GraphicsLayer.cpp

 /*
  * Copyright (C) 2009 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 17 matching lines @@
 #include "SkImageFilter.h"
 #include "SkMatrix44.h"
 #include "base/trace_event/trace_event_argument.h"
 #include "cc/layers/layer.h"
 #include "platform/DragImage.h"
 #include "platform/JSONValues.h"
 #include "platform/TraceEvent.h"
 #include "platform/geometry/FloatRect.h"
 #include "platform/geometry/LayoutRect.h"
 #include "platform/graphics/BitmapImage.h"
+#include "platform/graphics/ColorSpaceFilter.h"
+#include "platform/graphics/ColorSpaceProfile.h"
 #include "platform/graphics/FirstPaintInvalidationTracking.h"
 #include "platform/graphics/GraphicsContext.h"
 #include "platform/graphics/GraphicsLayerFactory.h"
+#include "platform/graphics/GraphicsScreen.h"
 #include "platform/graphics/Image.h"
 #include "platform/graphics/LinkHighlight.h"
 #include "platform/graphics/filters/SkiaImageFilterBuilder.h"
 #include "platform/graphics/paint/DrawingRecorder.h"
 #include "platform/graphics/paint/PaintController.h"
 #include "platform/scroll/ScrollableArea.h"
 #include "platform/text/TextStream.h"
 #include "public/platform/Platform.h"
 #include "public/platform/WebCompositorAnimation.h"
 #include "public/platform/WebCompositorSupport.h"
 #include "public/platform/WebFilterOperations.h"
 #include "public/platform/WebFloatPoint.h"
 #include "public/platform/WebFloatRect.h"
 #include "public/platform/WebLayer.h"
 #include "public/platform/WebPoint.h"
 #include "public/platform/WebSize.h"
+#include "third_party/skia/include/effects/SkColorFilterImageFilter.h"
 #include "wtf/CurrentTime.h"
 #include "wtf/HashMap.h"
 #include "wtf/HashSet.h"
 #include "wtf/MathExtras.h"
 #include "wtf/text/StringUTF8Adaptor.h"
 #include "wtf/text/WTFString.h"
 #include <algorithm>
 #include <cmath>
 #include <utility>
 
@@ skipping 1008 matching lines @@
         return;
 
     m_contentsRect = rect;
     updateContentsRect();
 }
 
 void GraphicsLayer::setContentsToImage(Image* image, RespectImageOrientationEnum respectImageOrientation)
 {
     RefPtr<SkImage> skImage = image ? image->imageForCurrentFrame() : nullptr;
 
-    if (image && skImage && image->isBitmapImage()) {
-        if (respectImageOrientation == RespectImageOrientation) {
+    RefPtr<SkColorFilter> colorTransform;
+
+    if (skImage && image->isBitmapImage()) {
+        RELEASE_ASSERT(currentScreenId()); // There should be an active graphics screen.
+
+        if (imageColorProfilesEnabled() && toBitmapImage(image)->hasColorProfile()) {
+            // FIXME: In an experiment, I passed a SkColorCubeFilter to the GPU and that works. But note
+            // that a SkColorCurveFilter does not - it gets dropped on floor somewhere after CC sends it
+            // to the GPU process (maybe because SkColorCurveFilter has float-16 (HALF_FLOAT) textures,
+            // whereas SkColorCubeFilter does not?).
+            if (RefPtr<ColorSpaceProfile> source = toBitmapImage(image)->colorProfile()) {
+                RefPtr<ColorSpaceProfile> target = screenColorProfile(currentScreenId());
+                colorTransform = createColorSpaceFilter(source.get(), target.get());
+            }
+        }
+
+        if (skImage && respectImageOrientation == RespectImageOrientation) {
             ImageOrientation imageOrientation = toBitmapImage(image)->currentFrameOrientation();
             skImage = DragImage::resizeAndOrientImage(skImage.release(), imageOrientation);
         }
     }
 
     if (image && skImage) {
         if (!m_imageLayer) {
             m_imageLayer = adoptPtr(Platform::current()->compositorSupport()->createImageLayer());
             registerContentsLayer(m_imageLayer->layer());
         }
         m_imageLayer->setImage(skImage.get());
         m_imageLayer->layer()->setOpaque(image->currentFrameKnownToBeOpaque());
         updateContentsRect();
     } else {
         if (m_imageLayer) {
             unregisterContentsLayer(m_imageLayer->layer());
             m_imageLayer.clear();
         }
     }
 
     setContentsTo(m_imageLayer ? m_imageLayer->layer() : 0);
+
+    if (!imageColorProfilesEnabled())
+        return;
+
+    if (colorTransform)
+        setContentsLayerColorTransform(colorSpaceFlattenableFilter(colorTransform.get()));
+    else
+        setContentsLayerColorTransform(nullptr);
 }
 
 bool GraphicsLayer::addAnimation(PassOwnPtr<WebCompositorAnimation> popAnimation)
 {
     OwnPtr<WebCompositorAnimation> animation(std::move(popAnimation));
     ASSERT(animation);
     platformLayer()->setAnimationDelegate(this);
 
     // Remove any existing animations with the same animation id and target property.
     platformLayer()->removeAnimation(animation->id(), animation->targetProperty());
@@ skipping 13 matching lines @@
 void GraphicsLayer::abortAnimation(int animationId)
 {
     platformLayer()->abortAnimation(animationId);
 }
 
 WebLayer* GraphicsLayer::platformLayer() const
 {
     return m_layer->layer();
 }
 
+void GraphicsLayer::setContentsLayerColorTransform(PassRefPtr<SkColorFilter> filter)
+{
+    if (!m_contentsLayer)
+        return;
+
+    RefPtr<SkImageFilter> colorTransform;
+    if (RefPtr<SkColorFilter> colorFilter = filter)
+        colorTransform = adoptRef(SkColorFilterImageFilter::Create(colorFilter.get()));
+
+    OwnPtr<WebFilterOperations> webFilters = adoptPtr(Platform::current()->compositorSupport()->createFilterOperations());
+    if (colorTransform)
+        webFilters->appendReferenceFilter(colorTransform.get());
+    m_contentsLayer->setFilters(*webFilters);
+}
+
 void GraphicsLayer::setFilters(const FilterOperations& filters)
 {
     SkiaImageFilterBuilder builder;
     OwnPtr<WebFilterOperations> webFilters = adoptPtr(Platform::current()->compositorSupport()->createFilterOperations());
     builder.buildFilterOperations(filters, webFilters.get());
     m_layer->layer()->setFilters(*webFilters);
 }
 
 void GraphicsLayer::setBackdropFilters(const FilterOperations& filters)
 {
@@ skipping 109 matching lines @@
 {
     if (!layer) {
         fprintf(stderr, "Cannot showGraphicsLayerTree for (nil).\n");
         return;
     }
 
     String output = layer->layerTreeAsText(blink::LayerTreeIncludesDebugInfo);
     fprintf(stderr, "%s\n", output.utf8().data());
 }
 #endif