1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
|
/*
* Copyright (C) 2010 Google 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:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#if USE(ACCELERATED_COMPOSITING)
#include "ImageLayerChromium.h"
#include "LayerTextureSubImage.h"
#include "LayerTextureUpdater.h"
#include "PlatformColor.h"
#include "cc/CCLayerTreeHost.h"
namespace WebCore {
class ImageLayerTextureUpdater : public LayerTextureUpdater {
public:
class Texture : public LayerTextureUpdater::Texture {
public:
Texture(ImageLayerTextureUpdater* textureUpdater, PassOwnPtr<CCPrioritizedTexture> texture)
: LayerTextureUpdater::Texture(texture)
, m_textureUpdater(textureUpdater)
{
}
virtual void updateRect(CCGraphicsContext* context, TextureAllocator* allocator, const IntRect& sourceRect, const IntRect& destRect) OVERRIDE
{
textureUpdater()->updateTextureRect(context, allocator, texture(), sourceRect, destRect);
}
private:
ImageLayerTextureUpdater* textureUpdater() { return m_textureUpdater; }
ImageLayerTextureUpdater* m_textureUpdater;
};
static PassRefPtr<ImageLayerTextureUpdater> create(bool useMapTexSubImage)
{
return adoptRef(new ImageLayerTextureUpdater(useMapTexSubImage));
}
virtual ~ImageLayerTextureUpdater() { }
virtual PassOwnPtr<LayerTextureUpdater::Texture> createTexture(CCPrioritizedTextureManager* manager)
{
return adoptPtr(new Texture(this, CCPrioritizedTexture::create(manager)));
}
virtual SampledTexelFormat sampledTexelFormat(GC3Denum textureFormat) OVERRIDE
{
return PlatformColor::sameComponentOrder(textureFormat) ?
LayerTextureUpdater::SampledTexelFormatRGBA : LayerTextureUpdater::SampledTexelFormatBGRA;
}
void updateTextureRect(CCGraphicsContext* context, TextureAllocator* allocator, CCPrioritizedTexture* texture, const IntRect& sourceRect, const IntRect& destRect)
{
texture->bindTexture(context, allocator);
// Source rect should never go outside the image pixels, even if this
// is requested because the texture extends outside the image.
IntRect clippedSourceRect = sourceRect;
IntRect imageRect = IntRect(0, 0, m_bitmap.width(), m_bitmap.height());
clippedSourceRect.intersect(imageRect);
IntRect clippedDestRect = destRect;
clippedDestRect.move(clippedSourceRect.location() - sourceRect.location());
clippedDestRect.setSize(clippedSourceRect.size());
SkAutoLockPixels lock(m_bitmap);
m_texSubImage.upload(static_cast<const uint8_t*>(m_bitmap.getPixels()), imageRect, clippedSourceRect, clippedDestRect, texture->format(), context);
}
void setBitmap(const SkBitmap& bitmap)
{
m_bitmap = bitmap;
}
private:
explicit ImageLayerTextureUpdater(bool useMapTexSubImage)
: m_texSubImage(useMapTexSubImage)
{
}
SkBitmap m_bitmap;
LayerTextureSubImage m_texSubImage;
};
PassRefPtr<ImageLayerChromium> ImageLayerChromium::create()
{
return adoptRef(new ImageLayerChromium());
}
ImageLayerChromium::ImageLayerChromium()
: TiledLayerChromium()
{
}
ImageLayerChromium::~ImageLayerChromium()
{
}
void ImageLayerChromium::setBitmap(const SkBitmap& bitmap)
{
// setBitmap() currently gets called whenever there is any
// style change that affects the layer even if that change doesn't
// affect the actual contents of the image (e.g. a CSS animation).
// With this check in place we avoid unecessary texture uploads.
if (bitmap.pixelRef() && bitmap.pixelRef() == m_bitmap.pixelRef())
return;
m_bitmap = bitmap;
setNeedsDisplay();
}
void ImageLayerChromium::setTexturePriorities(const CCPriorityCalculator& priorityCalc)
{
// Update the tile data before creating all the layer's tiles.
updateTileSizeAndTilingOption();
TiledLayerChromium::setTexturePriorities(priorityCalc);
}
void ImageLayerChromium::update(CCTextureUpdater& updater, const CCOcclusionTracker* occlusion)
{
createTextureUpdaterIfNeeded();
if (m_needsDisplay) {
m_textureUpdater->setBitmap(m_bitmap);
updateTileSizeAndTilingOption();
invalidateContentRect(IntRect(IntPoint(), contentBounds()));
m_needsDisplay = false;
}
updateContentRect(updater, visibleContentRect(), occlusion);
}
void ImageLayerChromium::createTextureUpdaterIfNeeded()
{
if (m_textureUpdater)
return;
m_textureUpdater = ImageLayerTextureUpdater::create(layerTreeHost()->layerRendererCapabilities().usingMapSub);
GC3Denum textureFormat = layerTreeHost()->layerRendererCapabilities().bestTextureFormat;
setTextureFormat(textureFormat);
setSampledTexelFormat(textureUpdater()->sampledTexelFormat(textureFormat));
}
LayerTextureUpdater* ImageLayerChromium::textureUpdater() const
{
return m_textureUpdater.get();
}
IntSize ImageLayerChromium::contentBounds() const
{
return IntSize(m_bitmap.width(), m_bitmap.height());
}
bool ImageLayerChromium::drawsContent() const
{
return !m_bitmap.isNull() && TiledLayerChromium::drawsContent();
}
bool ImageLayerChromium::needsContentsScale() const
{
// Contents scale is not need for image layer because this can be done in compositor more efficiently.
return false;
}
}
#endif // USE(ACCELERATED_COMPOSITING)
|
