import * as spec from '@galacean/effects-specification';
export * from './create-gl-context';
export * from './gpu-time';
export declare const initErrors: string[];
export declare const glContext: WebGL2RenderingContext;
export declare function initGLContext(): void;
export declare function isWebGL2(gl: WebGLRenderingContext | WebGL2RenderingContext): gl is WebGL2RenderingContext;
export declare function vertexFormatType2GLType(formatType: spec.VertexFormatType): spec.BufferType;
export declare function glType2VertexFormatType(webglType: spec.BufferType): spec.VertexFormatType;