1 /*
2 * Copyright (c) 2013, Google Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are
6 * met:
7 *
8 * * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * * Redistributions in binary form must reproduce the above
11 * copyright notice, this list of conditions and the following disclaimer
12 * in the documentation and/or other materials provided with the
13 * distribution.
14 * * Neither the name of Google Inc. nor the names of its
15 * contributors may be used to endorse or promote products derived from
16 * this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31 #include "config.h"
32
33 #include "platform/graphics/gpu/WebGLImageBufferSurface.h"
34
35 #include "platform/graphics/skia/GaneshUtils.h"
36 #include "public/platform/Platform.h"
37 #include "public/platform/WebGraphicsContext3DProvider.h"
38 #include "third_party/skia/include/core/SkPixelRef.h"
39 #include "wtf/PassOwnPtr.h"
40
41 namespace blink {
42
WebGLImageBufferSurface(const IntSize & size,OpacityMode opacityMode)43 WebGLImageBufferSurface::WebGLImageBufferSurface(const IntSize& size, OpacityMode opacityMode)
44 : ImageBufferSurface(size, opacityMode)
45 {
46 m_contextProvider = adoptPtr(Platform::current()->createSharedOffscreenGraphicsContext3DProvider());
47 if (!m_contextProvider)
48 return;
49 GrContext* gr = m_contextProvider->grContext();
50 if (!gr)
51 return;
52 ensureTextureBackedSkBitmap(gr, m_bitmap, size, kDefault_GrSurfaceOrigin, kRGBA_8888_GrPixelConfig);
53 }
54
~WebGLImageBufferSurface()55 WebGLImageBufferSurface::~WebGLImageBufferSurface()
56 {
57 }
58
getBackingTexture() const59 Platform3DObject WebGLImageBufferSurface::getBackingTexture() const
60 {
61 GrTexture* texture = m_bitmap.getTexture();
62 if (!texture)
63 return 0;
64 return texture->getTextureHandle();
65 }
66
didModifyBackingTexture()67 void WebGLImageBufferSurface::didModifyBackingTexture()
68 {
69 if (!m_bitmap.isNull()) {
70 m_bitmap.pixelRef()->notifyPixelsChanged();
71 }
72 }
73
invalidateCachedBitmap()74 void WebGLImageBufferSurface::invalidateCachedBitmap()
75 {
76 m_cachedBitmap.reset();
77 }
78
updateCachedBitmapIfNeeded()79 void WebGLImageBufferSurface::updateCachedBitmapIfNeeded()
80 {
81 if (m_cachedBitmap.isNull() && m_bitmap.pixelRef()) {
82 (m_bitmap.pixelRef())->readPixels(&m_cachedBitmap);
83 }
84 }
85
86 } // namespace blink
87