com.google.gwt.webgl.client.WebGLContextAttributes.java Source code

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Here is the source code for com.google.gwt.webgl.client.WebGLContextAttributes.java

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/*
 * Copyright 2010 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */

package com.google.gwt.webgl.client;

import com.google.gwt.core.client.JavaScriptObject;

/** The WebGLContextAttributes interface contains drawing surface attributes and is passed as the second parameter to getContext. A
 * native object may be supplied as this parameter; the specified attributes will be queried from this object. */
public class WebGLContextAttributes extends JavaScriptObject {

    public static native WebGLContextAttributes create() /*-{
                                                         return { premultipliedAlpha:false };
                                                         }-*/;

    protected WebGLContextAttributes() {
    }

    /** Default: true. If the value is true, the drawing buffer has an alpha channel for the purposes of performing OpenGL
     * destination alpha operations and compositing with the page. If the value is false, no alpha buffer is available. */
    public final native void setAlpha(boolean alpha) /*-{
                                                      this.alpha = alpha;
                                                      }-*/;

    public final native void clearAlpha() /*-{
                                          delete this.alpha;
                                          }-*/;

    /** Default: true. If the value is true, the drawing buffer has a depth buffer of at least 16 bits. If the value is false, no
     * depth buffer is available. */
    public final native void setDepth(boolean depth) /*-{
                                                      this.depth = depth;
                                                      }-*/;

    public final native void clearDepth() /*-{
                                          delete this.depth;
                                          }-*/;

    /** Default: false. If the value is true, the drawing buffer has a stencil buffer of at least 8 bits. If the value is false, no
     * stencil buffer is available. */
    public final native void setStencil(boolean stencil) /*-{
                                                         this.stencil = stencil;
                                                         }-*/;

    public final native void clearStencil() /*-{
                                             delete this.stencil;
                                             }-*/;

    /** Default: true. If the value is true and the implementation supports antialiasing the drawing buffer will perform
     * antialiasing using its choice of technique (multisample/supersample) and quality. If the value is false or the
     * implementation does not support antialiasing, no antialiasing is performed. */
    public final native void setAntialias(boolean antialias) /*-{
                                                               this.antialias = antialias;
                                                               }-*/;

    public final native void clearAntialias() /*-{
                                                delete this.antialias;
                                                }-*/;

    /** Default: true. If the value is true the page compositor will assume the drawing buffer contains colors with premultiplied
     * alpha. If the value is false the page compositor will assume that colors in the drawing buffer are not premultiplied. This
     * flag is ignored if the alpha flag is false. See Premultiplied Alpha for more information on the effects of the
     * premultipliedAlpha flag. */
    public final native void setPremultipliedAlpha(boolean premultipliedAlpha) /*-{
                                                                                 this.premultipliedAlpha = premultipliedAlpha;
                                                                                 }-*/;

    public final native void clearPremultipliedAlpha() /*-{
                                                         delete this.premultipliedAlpha;
                                                         }-*/;

    public final native void setPreserveDrawingBuffer(boolean preserveDrawingBuffer) /*-{
                                                                                     this.preserveDrawingBuffer = preserveDrawingBuffer;
                                                                                     }-*/;
}