Example usage for com.google.gwt.webgl.client WebGLContextAttributes setPremultipliedAlpha

Introduction

In this page you can find the example usage for com.google.gwt.webgl.client WebGLContextAttributes setPremultipliedAlpha.

Prototype

public final native void setPremultipliedAlpha(boolean premultipliedAlpha) ;

Source Link

Document

Default: true.

Usage

From source file:com.badlogic.gdx.backends.gwt.GwtGraphics.java

License:Apache License

public GwtGraphics(Panel root, GwtApplicationConfiguration config) {
    Canvas canvasWidget = Canvas.createIfSupported();
    if (canvasWidget == null)
        throw new GdxRuntimeException("Canvas not supported");
    canvas = canvasWidget.getCanvasElement();
    root.add(canvasWidget);// w w  w .  j av a 2  s. c  om
    canvas.setWidth(config.width);
    canvas.setHeight(config.height);
    this.config = config;

    WebGLContextAttributes attributes = WebGLContextAttributes.create();
    attributes.setAntialias(config.antialiasing);
    attributes.setStencil(config.stencil);
    attributes.setAlpha(config.alpha);
    attributes.setPremultipliedAlpha(config.premultipliedAlpha);
    attributes.setPreserveDrawingBuffer(config.preserveDrawingBuffer);

    context = WebGLRenderingContext.getContext(canvas, attributes);
    context.viewport(0, 0, config.width, config.height);
    this.gl = config.useDebugGL ? new GwtGL20Debug(context) : new GwtGL20(context);

    String versionString = gl.glGetString(GL20.GL_VERSION);
    String vendorString = gl.glGetString(GL20.GL_VENDOR);
    String rendererString = gl.glGetString(GL20.GL_RENDERER);
    glVersion = new GLVersion(Application.ApplicationType.WebGL, versionString, vendorString, rendererString);
}

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From source file:org.parallax3d.parallax.platforms.gwt.GwtRenderingContext.java

License:Open Source License

public GwtRenderingContext(Panel root, GwtAppConfiguration config) throws ParallaxRuntimeException {
    this.root = root;
    root.clear();//ww  w  .  j  a v  a  2 s. co  m

    Canvas canvasWidget = Canvas.createIfSupported();
    if (canvasWidget == null)
        throw new ParallaxRuntimeException("Canvas not supported");

    int width = root.getOffsetWidth();
    int height = root.getOffsetHeight();

    if (width == 0 || height == 0)
        new ParallaxRuntimeException("Width or Height of the Panel is 0");

    lastWidth = width;
    lastHeight = height;

    canvas = canvasWidget.getCanvasElement();
    root.add(canvasWidget);
    canvas.setWidth(width);
    canvas.setHeight(height);
    this.config = config;

    WebGLContextAttributes attributes = WebGLContextAttributes.create();
    attributes.setAntialias(config.antialiasing);
    attributes.setStencil(config.stencil);
    attributes.setAlpha(config.alpha);
    attributes.setPremultipliedAlpha(config.premultipliedAlpha);
    attributes.setPreserveDrawingBuffer(config.preserveDrawingBuffer);

    context = WebGLRenderingContext.getContext(canvas, attributes);
    context.viewport(0, 0, width, height);

    gl = new GwtGL20(context);

    renderer = new GLRenderer(gl, width, height);

    input = new GwtInput(canvas);

    addEventListeners();

    Window.addResizeHandler(this);
}

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