Context Attributes

We saw in the topic of Stencil Shadow Volume that we can pass a second parameter to .getContext(). Here we show the other attributes available.

alpha (true): If true, requests a drawing buffer with an alpha channel.

depth (true): If true, requests a drawing buffer with a depth buffer of at least 16 bits.

stencil (false): If true, requests a stencil buffer of at least 8 bits.

antialias (true): If true, requests a drawing buffer with antialiasing.

premultipliedAlpha (true): If true, requests a drawing buffer which contains colors with premultiplied alpha.

preserveDrawingBuffer (true): If true, requests that contents of the drawing buffer remain in-between frames, at a potential performance cost.