Function hasExt

src/renderer/webgl/WebGLRenderer.js:1357–1372

(gl, format)

        var extEXTString = 'EXT_texture_compression_';

        var hasExt = function (gl, format)
        {
            var results = gl.getExtension(extString + format) || gl.getExtension(wkExtString + format) || gl.getExtension(extEXTString + format);

            if (results)
            {
                var glEnums = {};

                for (var key in results)
                {
                    glEnums[results[key]] = key;
                }

                return glEnums;
            }
        };

        var gl = this.gl;