50 lines
1.1 KiB
JavaScript
50 lines
1.1 KiB
JavaScript
/**
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* @author mrdoob / http://mrdoob.com/
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*/
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THREE.WebGLExtensions = function ( gl ) {
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var extensions = {};
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this.get = function ( name ) {
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if ( extensions[ name ] !== undefined ) {
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return extensions[ name ];
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}
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var extension;
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switch ( name ) {
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case 'EXT_texture_filter_anisotropic':
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extension = gl.getExtension( 'EXT_texture_filter_anisotropic' ) || gl.getExtension( 'MOZ_EXT_texture_filter_anisotropic' ) || gl.getExtension( 'WEBKIT_EXT_texture_filter_anisotropic' );
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break;
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case 'WEBGL_compressed_texture_s3tc':
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extension = gl.getExtension( 'WEBGL_compressed_texture_s3tc' ) || gl.getExtension( 'MOZ_WEBGL_compressed_texture_s3tc' ) || gl.getExtension( 'WEBKIT_WEBGL_compressed_texture_s3tc' );
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break;
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case 'WEBGL_compressed_texture_pvrtc':
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extension = gl.getExtension( 'WEBGL_compressed_texture_pvrtc' ) || gl.getExtension( 'WEBKIT_WEBGL_compressed_texture_pvrtc' );
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break;
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default:
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extension = gl.getExtension( name );
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}
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if ( extension === null ) {
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THREE.warn( 'THREE.WebGLRenderer: ' + name + ' extension not supported.' );
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}
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extensions[ name ] = extension;
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return extension;
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};
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};
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