Source: dependencies/pixi-gl-core/setVertexAttribArrays.js

// var GL_MAP = {};
/**
 * @param gl {WebGLRenderingContext} The current WebGL context
 * @param attribs {*}
 * @param state {*}
 */
var setVertexAttribArrays = function (gl, attribs, state)
{
    var i;
    if(state)
    {
        var tempAttribState = state.tempAttribState,
            attribState = state.attribState;
        for (i = 0; i < tempAttribState.length; i++)
        {
            tempAttribState[i] = false;
        }
        // set the new attribs
        for (i = 0; i < attribs.length; i++)
        {
            tempAttribState[attribs[i].attribute.location] = true;
        }
        for (i = 0; i < attribState.length; i++)
        {
            if (attribState[i] !== tempAttribState[i])
            {
                attribState[i] = tempAttribState[i];
                if (state.attribState[i])
                {
                    gl.enableVertexAttribArray(i);
                }
                else
                {
                    gl.disableVertexAttribArray(i);
                }
            }
        }
    }
    else
    {
        for (i = 0; i < attribs.length; i++)
        {
            var attrib = attribs[i];
            gl.enableVertexAttribArray(attrib.attribute.location);
        }
    }
};
module.exports = setVertexAttribArrays;