import { Device } from './Device';
/**
 * @public
 */
export declare class Capabilities {
    device: Device<WebGLRenderingContext | WebGL2RenderingContext>;
    gl: WebGLRenderingContext;
    private capabilities;
    private extensions;
    private get gl2();
    get maxViewportWidth(): any;
    get maxViewportHeight(): any;
    get maxRenderBufferSize(): any;
    get maxTextureUnits(): any;
    get maxTextureSize(): any;
    get maxVertexAttributes(): any;
    get maxVertexTextureUnits(): any;
    get maxVertexUniformVectors(): any;
    get maxVaryingVectors(): any;
    get maxFragmentUniformVectors(): any;
    private $maxDrawBuffers;
    get maxDrawBuffers(): number;
    private $maxColorAttachments;
    get maxColorAttachments(): number;
    get textureFormatFloat(): boolean;
    get textureFormatHalfFloat(): boolean;
    constructor(device: Device<WebGLRenderingContext | WebGL2RenderingContext>);
    capability(name: string, extension?: string): any;
    extension(extensionName: 'EXT_blend_minmax'): EXT_blend_minmax | null;
    extension(extensionName: 'EXT_texture_filter_anisotropic'): EXT_texture_filter_anisotropic | null;
    extension(extensionName: 'EXT_frag_depth'): EXT_frag_depth | null;
    extension(extensionName: 'EXT_shader_texture_lod'): EXT_shader_texture_lod | null;
    extension(extensionName: 'EXT_sRGB'): EXT_sRGB | null;
    extension(extensionName: 'OES_vertex_array_object'): OES_vertex_array_object | null;
    extension(extensionName: 'WEBGL_color_buffer_float'): WEBGL_color_buffer_float | null;
    extension(extensionName: 'WEBGL_compressed_texture_astc'): WEBGL_compressed_texture_astc | null;
    extension(extensionName: 'WEBGL_compressed_texture_s3tc_srgb'): WEBGL_compressed_texture_s3tc_srgb | null;
    extension(extensionName: 'WEBGL_debug_shaders'): WEBGL_debug_shaders | null;
    extension(extensionName: 'WEBGL_draw_buffers'): WEBGL_draw_buffers | null;
    extension(extensionName: 'WEBGL_lose_context'): WEBGL_lose_context | null;
    extension(extensionName: 'WEBGL_depth_texture'): WEBGL_depth_texture | null;
    extension(extensionName: 'WEBGL_debug_renderer_info'): WEBGL_debug_renderer_info | null;
    extension(extensionName: 'WEBGL_compressed_texture_s3tc'): WEBGL_compressed_texture_s3tc | null;
    extension(extensionName: 'OES_texture_half_float_linear'): OES_texture_half_float_linear | null;
    extension(extensionName: 'OES_texture_half_float'): OES_texture_half_float | null;
    extension(extensionName: 'OES_texture_float_linear'): OES_texture_float_linear | null;
    extension(extensionName: 'OES_texture_float'): OES_texture_float | null;
    extension(extensionName: 'OES_standard_derivatives'): OES_standard_derivatives | null;
    extension(extensionName: 'OES_element_index_uint'): OES_element_index_uint | null;
    extension(extensionName: 'ANGLE_instanced_arrays'): ANGLE_instanced_arrays | null;
}
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