OLD | NEW |
1 // Copyright 2014 The Chromium Authors. All rights reserved. | 1 // Copyright 2014 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "platform/graphics/paint/CompositingRecorder.h" | 5 #include "platform/graphics/paint/CompositingRecorder.h" |
6 | 6 |
7 #include "platform/graphics/GraphicsContext.h" | 7 #include "platform/graphics/GraphicsContext.h" |
8 #include "platform/graphics/GraphicsLayer.h" | 8 #include "platform/graphics/GraphicsLayer.h" |
9 #include "platform/graphics/paint/CompositingDisplayItem.h" | 9 #include "platform/graphics/paint/CompositingDisplayItem.h" |
| 10 #include "platform/graphics/paint/DrawingRecorder.h" |
10 #include "platform/graphics/paint/PaintController.h" | 11 #include "platform/graphics/paint/PaintController.h" |
| 12 #include "platform/graphics/paint/SkPictureBuilder.h" |
11 | 13 |
12 namespace blink { | 14 namespace blink { |
13 | 15 |
14 CompositingRecorder::CompositingRecorder(GraphicsContext& graphicsContext, const
DisplayItemClient& client, const SkXfermode::Mode xferMode, const float opacity
, const FloatRect* bounds, ColorFilter colorFilter) | 16 CompositingRecorder::CompositingRecorder(GraphicsContext& graphicsContext, const
DisplayItemClient& client, const SkXfermode::Mode xferMode, const float opacity
, const FloatRect* bounds, ColorFilter colorFilter) |
15 : m_client(client) | 17 : m_client(client) |
16 , m_graphicsContext(graphicsContext) | 18 , m_graphicsContext(graphicsContext) |
17 { | 19 { |
18 beginCompositing(graphicsContext, m_client, xferMode, opacity, bounds, color
Filter); | 20 beginCompositing(graphicsContext, m_client, xferMode, opacity, bounds, color
Filter); |
19 } | 21 } |
20 | 22 |
21 CompositingRecorder::~CompositingRecorder() | 23 CompositingRecorder::~CompositingRecorder() |
22 { | 24 { |
23 endCompositing(m_graphicsContext, m_client); | 25 endCompositing(m_graphicsContext, m_client); |
24 } | 26 } |
25 | 27 |
26 void CompositingRecorder::beginCompositing(GraphicsContext& graphicsContext, con
st DisplayItemClient& client, const SkXfermode::Mode xferMode, const float opaci
ty, const FloatRect* bounds, ColorFilter colorFilter) | 28 void CompositingRecorder::beginCompositing(GraphicsContext& graphicsContext, con
st DisplayItemClient& client, const SkXfermode::Mode xferMode, const float opaci
ty, const FloatRect* bounds, ColorFilter colorFilter) |
27 { | 29 { |
28 graphicsContext.getPaintController().createAndAppend<BeginCompositingDisplay
Item>(client, xferMode, opacity, bounds, colorFilter); | 30 graphicsContext.getPaintController().createAndAppend<BeginCompositingDisplay
Item>(client, xferMode, opacity, bounds, colorFilter); |
29 } | 31 } |
30 | 32 |
31 void CompositingRecorder::endCompositing(GraphicsContext& graphicsContext, const
DisplayItemClient& client) | 33 void CompositingRecorder::endCompositing(GraphicsContext& graphicsContext, const
DisplayItemClient& client) |
32 { | 34 { |
33 graphicsContext.getPaintController().endItem<EndCompositingDisplayItem>(clie
nt); | 35 // If the end of the current display list is of the form [BeginCompositingDi
splayItem] [DrawingDisplayItem], |
| 36 // then fold the BeginCompositingDisplayItem into a new DrawingDisplayItem t
hat replaces them both. This allows |
| 37 // Skia to optimize for the case when the BeginCompositingDisplayItem repres
ents a simple opacity/color that can be merged into |
| 38 // the opacity/color of the drawing. See crbug.com/628831 for more details. |
| 39 PaintController& paintController = graphicsContext.getPaintController(); |
| 40 const DisplayItem* lastDisplayItem = paintController.lastDisplayItem(0); |
| 41 const DisplayItem* secondToLastDisplayItem = paintController.lastDisplayItem
(1); |
| 42 if (lastDisplayItem && secondToLastDisplayItem && lastDisplayItem->drawsCont
ent() && secondToLastDisplayItem->getType() == DisplayItem::BeginCompositing) { |
| 43 FloatRect cullRect(((DrawingDisplayItem*)lastDisplayItem)->picture()->cu
llRect()); |
| 44 const DisplayItemClient& displayItemClient = lastDisplayItem->client(); |
| 45 DisplayItem::Type displayItemType = lastDisplayItem->getType(); |
| 46 |
| 47 // Re-record the last two DisplayItems into a new SkPicture. |
| 48 SkPictureBuilder pictureBuilder(cullRect, nullptr, &graphicsContext); |
| 49 { |
| 50 DrawingRecorder newRecorder(pictureBuilder.context(), displayItemCli
ent, displayItemType, cullRect); |
| 51 DCHECK(!DrawingRecorder::useCachedDrawingIfPossible(pictureBuilder.c
ontext(), displayItemClient, displayItemType)); |
| 52 |
| 53 secondToLastDisplayItem->replay(pictureBuilder.context()); |
| 54 lastDisplayItem->replay(pictureBuilder.context()); |
| 55 EndCompositingDisplayItem(client).replay(pictureBuilder.context()); |
| 56 } |
| 57 |
| 58 paintController.removeLastDisplayItem(); // Remove the DrawingDisplayIte
m. |
| 59 paintController.removeLastDisplayItem(); // Remove the BeginCompositingD
isplayItem. |
| 60 |
| 61 // The new item cannot be cached, because it is a mutation of the Displa
yItem the client thought it was painting. |
| 62 paintController.beginSkippingCache(); |
| 63 { |
| 64 // Replay the new SKPicture into a new DrawingDisplayItem in the ori
ginal DisplayItemList. |
| 65 DrawingRecorder newRecorder(graphicsContext, displayItemClient, disp
layItemType, cullRect); |
| 66 pictureBuilder.endRecording()->playback(graphicsContext.canvas()); |
| 67 } |
| 68 paintController.endSkippingCache(); |
| 69 } else { |
| 70 graphicsContext.getPaintController().endItem<EndCompositingDisplayItem>(
client); |
| 71 } |
34 } | 72 } |
35 | 73 |
36 } // namespace blink | 74 } // namespace blink |
OLD | NEW |