export declare const EFFECTS_COPY_MESH_NAME = "effects-internal-copy";
export declare const COPY_MESH_SHADER_ID = "effects-internal-copy-mesh";
export declare const COPY_VERTEX_SHADER = "\nprecision highp float;\nattribute vec2 aPos;\nvarying vec2 vTex;\nvoid main(){\n    gl_Position = vec4(aPos,0.,1.0);\n    vTex = (aPos + vec2(1.0))/2.;\n}";
export declare const COPY_FRAGMENT_SHADER = "precision mediump float;\nvarying vec2 vTex;\n\n#ifdef DEPTH_TEXTURE\nuniform sampler2D uDepth;\n#extension GL_EXT_frag_depth : enable\n#endif\nvoid main(){\n    #ifdef DEPTH_TEXTURE\n    gl_FragDepthEXT = texture2D(uDepth,vTex).r;\n    #endif\n}\n";