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/*
* 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.
*
* 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.
*/
#ifndef WebGLContextAttributes_h
#define WebGLContextAttributes_h
#include "bindings/v8/ScriptWrappable.h"
#include "core/html/canvas/CanvasContextAttributes.h"
#include "public/platform/WebGraphicsContext3D.h"
#include "wtf/PassRefPtr.h"
namespace WebCore {
class Settings;
class WebGLContextAttributes FINAL : public CanvasContextAttributes, public ScriptWrappable {
public:
virtual ~WebGLContextAttributes();
// Create a new attributes object
static PassRefPtr<WebGLContextAttributes> create();
// Create a copy of this object.
PassRefPtr<WebGLContextAttributes> clone() const;
// Whether or not the drawing buffer has an alpha channel; default=true
bool alpha() const;
void setAlpha(bool);
// Whether or not the drawing buffer has a depth buffer; default=true
bool depth() const;
void setDepth(bool);
// Whether or not the drawing buffer has a stencil buffer; default=false
bool stencil() const;
void setStencil(bool);
// Whether or not the drawing buffer is antialiased; default=true
bool antialias() const;
void setAntialias(bool);
// Whether or not to treat the values in the drawing buffer as
// though their alpha channel has already been multiplied into the
// color channels; default=true
bool premultipliedAlpha() const;
void setPremultipliedAlpha(bool);
// Whether or not to preserve the drawing buffer after presentation to the
// screen; default=false
bool preserveDrawingBuffer() const;
void setPreserveDrawingBuffer(bool);
// Whether or not to fail context creation if performance will be
// significantly degraded compared to a native GL context; default=false
bool failIfMajorPerformanceCaveat() const;
void setFailIfMajorPerformanceCaveat(bool);
// Set up the attributes that can be used to initialize a WebGraphicsContext3D.
// It's mostly based on WebGLContextAttributes, but would be adjusted based
// on settings.
blink::WebGraphicsContext3D::Attributes attributes(const blink::WebString&, Settings*) const;
protected:
WebGLContextAttributes();
WebGLContextAttributes(const WebGLContextAttributes&);
private:
bool m_alpha;
bool m_depth;
bool m_stencil;
bool m_antialias;
bool m_premultipliedAlpha;
bool m_preserveDrawingBuffer;
bool m_failIfMajorPerformanceCaveat;
};
} // namespace WebCore
#endif // WebGLContextAttributes_h
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