2 * Copyright (c) 2010, Google Inc. All rights reserved.
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are
7 * * Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * * Redistributions in binary form must reproduce the above
10 * copyright notice, this list of conditions and the following disclaimer
11 * in the documentation and/or other materials provided with the
14 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
15 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
16 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
17 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
18 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
19 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
20 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 #ifndef WebGLContextAttributes_h
28 #define WebGLContextAttributes_h
30 #include "CanvasContextAttributes.h"
31 #include "GraphicsContext3D.h"
32 #include <wtf/PassRefPtr.h>
36 class WebGLContextAttributes : public CanvasContextAttributes {
38 virtual ~WebGLContextAttributes();
40 // Create a new attributes object
41 static PassRefPtr<WebGLContextAttributes> create();
43 // Create a new attributes object initialized with preexisting attributes
44 static PassRefPtr<WebGLContextAttributes> create(GraphicsContext3D::Attributes attributes);
46 // Whether or not the drawing buffer has an alpha channel; default=true
48 void setAlpha(bool alpha);
50 // Whether or not the drawing buffer has a depth buffer; default=true
52 void setDepth(bool depth);
54 // Whether or not the drawing buffer has a stencil buffer; default=true
56 void setStencil(bool stencil);
58 // Whether or not the drawing buffer is antialiased; default=true
59 bool antialias() const;
60 void setAntialias(bool antialias);
62 // Whether or not to treat the values in the drawing buffer as
63 // though their alpha channel has already been multiplied into the
64 // color channels; default=true
65 bool premultipliedAlpha() const;
66 void setPremultipliedAlpha(bool premultipliedAlpha);
68 // Whether or not to preserve the drawing buffer after presentation to the
69 // screen; default=false
70 bool preserveDrawingBuffer() const;
71 void setPreserveDrawingBuffer(bool);
73 // Fetches a copy of the attributes stored in this object in a
74 // form that can be used to initialize a GraphicsContext3D.
75 GraphicsContext3D::Attributes attributes() const;
78 WebGLContextAttributes();
79 WebGLContextAttributes(GraphicsContext3D::Attributes attributes);
82 GraphicsContext3D::Attributes m_attrs;
85 } // namespace WebCore
87 #endif // WebGLContextAttributes_h