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 #include "platform/graphics/gpu/AcceleratedImageBufferSurface.h"
33
34 #include "public/platform/Platform.h"
35 #include "public/platform/WebGraphicsContext3DProvider.h"
36 #include "third_party/skia/include/core/SkCanvas.h"
37 #include "third_party/skia/include/core/SkDevice.h"
38 #include "third_party/skia/include/gpu/GrRenderTarget.h"
39 #include "third_party/skia/include/gpu/GrTexture.h"
40 #include "wtf/PassOwnPtr.h"
41 #include "wtf/RefPtr.h"
42
43 namespace blink {
44
AcceleratedImageBufferSurface(const IntSize & size,OpacityMode opacityMode,int msaaSampleCount)45 AcceleratedImageBufferSurface::AcceleratedImageBufferSurface(const IntSize& size, OpacityMode opacityMode, int msaaSampleCount)
46 : ImageBufferSurface(size, opacityMode)
47 {
48 m_contextProvider = adoptPtr(blink::Platform::current()->createSharedOffscreenGraphicsContext3DProvider());
49 if (!m_contextProvider)
50 return;
51 GrContext* grContext = m_contextProvider->grContext();
52 if (!grContext)
53 return;
54
55 SkAlphaType alphaType = (Opaque == opacityMode) ? kOpaque_SkAlphaType : kPremul_SkAlphaType;
56 SkImageInfo info = SkImageInfo::MakeN32(size.width(), size.height(), alphaType);
57 m_surface = adoptPtr(SkSurface::NewScratchRenderTarget(grContext, info, msaaSampleCount));
58 if (!m_surface.get())
59 return;
60 clear();
61 }
62
getBackingTexture() const63 Platform3DObject AcceleratedImageBufferSurface::getBackingTexture() const
64 {
65 GrRenderTarget* renderTarget = m_surface->getCanvas()->getTopDevice()->accessRenderTarget();
66 if (renderTarget) {
67 return renderTarget->asTexture()->getTextureHandle();
68 }
69 return 0;
70 }
71
72 } // namespace blink
73