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GLOW » The Global GL
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2011+06+08

The Global GL

GLOW can handle multiple WebGL contexts, the only thing you have to do is switch context when you’re updating and drawing shaders. This is because of the global GL-variable.

When you create a context it’s automatically set as the current context. You can switch context by…

GLOW.enableContext( mySecondContext );

And then start modifying and drawing shaders that belong to this context. Note that each context has it’s own cache, so it’s important to clear all of them. When switching context the global GL-variable is updated. The global GL-variable is the actual context and can be used like…

myContext.setupBlend( { equation: GL.FUNC_ADD } );

Please check out Khronos’ official documentation for more information on what can be done with the global GL-variable.