declare const _default: "precision highp float;\n\nczm_modelVertexOutput defaultVertexOutput(vec3 positionMC) {\n    czm_modelVertexOutput vsOutput;\n    vsOutput.positionMC = positionMC;\n    vsOutput.pointSize = 1.0;\n    return vsOutput;\n}\n\nvoid main()\n{\n    // Initialize the attributes struct with all\n    // attributes except quantized ones.\n    ProcessedAttributes attributes;\n    initializeAttributes(attributes);\n\n    // Dequantize the quantized ones and add them to the\n    // attributes struct.\n    #ifdef USE_DEQUANTIZATION\n    dequantizationStage(attributes);\n    #endif\n\n    #ifdef HAS_MORPH_TARGETS\n    morphTargetsStage(attributes);\n    #endif\n\n    #ifdef HAS_SKINNING\n    skinningStage(attributes);\n    #endif\n\n    #ifdef HAS_PRIMITIVE_OUTLINE\n    primitiveOutlineStage();\n    #endif\n\n    // Compute the bitangent according to the formula in the glTF spec.\n    // Normal and tangents can be affected by morphing and skinning, so\n    // the bitangent should not be computed until their values are finalized.\n    #ifdef HAS_BITANGENTS\n    attributes.bitangentMC = normalize(cross(attributes.normalMC, attributes.tangentMC) * attributes.tangentSignMC);\n    #endif\n\n    FeatureIds featureIds;\n    featureIdStage(featureIds, attributes);\n\n    #ifdef HAS_SELECTED_FEATURE_ID\n    SelectedFeature feature;\n    selectedFeatureIdStage(feature, featureIds);\n    // Handle any show properties that come from the style.\n    cpuStylingStage(attributes.positionMC, feature);\n    #endif\n\n    #if defined(USE_2D_POSITIONS) || defined(USE_2D_INSTANCING)\n    // The scene mode 2D pipeline stage and instancing stage add a different\n    // model view matrix to accurately project the model to 2D. However, the\n    // output positions and normals should be transformed by the 3D matrices\n    // to keep the data the same for the fragment shader.\n    mat4 modelView = czm_modelView3D;\n    mat3 normal = czm_normal3D;\n    #else\n    // These are used for individual model projection because they will\n    // automatically change based on the scene mode.\n    mat4 modelView = czm_modelView;\n    mat3 normal = czm_normal;\n    #endif\n\n    // Update the position for this instance in place\n    #ifdef HAS_INSTANCING\n\n        // The legacy instance stage is used when rendering i3dm models that\n        // encode instances transforms in world space, as opposed to glTF models\n        // that use EXT_mesh_gpu_instancing, where instance transforms are encoded\n        // in object space.\n        #ifdef USE_LEGACY_INSTANCING\n        mat4 instanceModelView;\n        mat3 instanceModelViewInverseTranspose;\n\n        legacyInstancingStage(attributes, instanceModelView, instanceModelViewInverseTranspose);\n\n        modelView = instanceModelView;\n        normal = instanceModelViewInverseTranspose;\n        #else\n        instancingStage(attributes);\n        #endif\n\n        #ifdef USE_PICKING\n        v_pickColor = a_pickColor;\n        #endif\n\n    #endif\n\n    Metadata metadata;\n    MetadataClass metadataClass;\n    MetadataStatistics metadataStatistics;\n    metadataStage(metadata, metadataClass, metadataStatistics, attributes);\n\n    #ifdef HAS_VERTICAL_EXAGGERATION\n    verticalExaggerationStage(attributes);\n    #endif\n\n    #ifdef HAS_CUSTOM_VERTEX_SHADER\n    czm_modelVertexOutput vsOutput = defaultVertexOutput(attributes.positionMC);\n    customShaderStage(vsOutput, attributes, featureIds, metadata, metadataClass, metadataStatistics);\n    #endif\n\n    // Compute the final position in each coordinate system needed.\n    // This returns the value that will be assigned to gl_Position.\n    vec4 positionClip = geometryStage(attributes, modelView, normal);\n\n    // This must go after the geometry stage as it needs v_positionWC\n    #ifdef HAS_ATMOSPHERE\n    atmosphereStage(attributes);\n    #endif\n\n    #ifdef ENABLE_CLIPPING_POLYGONS\n    modelClippingPolygonsStage(attributes);\n    #endif\n\n    #ifdef HAS_SILHOUETTE\n    silhouetteStage(attributes, positionClip);\n    #endif\n\n    #ifdef HAS_POINT_CLOUD_SHOW_STYLE\n    float show = pointCloudShowStylingStage(attributes, metadata);\n    #else\n    float show = 1.0;\n    #endif\n\n    #ifdef HAS_POINT_CLOUD_BACK_FACE_CULLING\n    show *= pointCloudBackFaceCullingStage();\n    #endif\n\n    #ifdef HAS_POINT_CLOUD_COLOR_STYLE\n    v_pointCloudColor = pointCloudColorStylingStage(attributes, metadata);\n    #endif\n\n    #ifdef PRIMITIVE_TYPE_POINTS\n        #ifdef HAS_CUSTOM_VERTEX_SHADER\n        gl_PointSize = vsOutput.pointSize;\n        #elif defined(HAS_POINT_CLOUD_POINT_SIZE_STYLE) || defined(HAS_POINT_CLOUD_ATTENUATION)\n        gl_PointSize = pointCloudPointSizeStylingStage(attributes, metadata);\n        #else\n        gl_PointSize = 1.0;\n        #endif\n        \n        gl_PointSize *= show;\n    #endif\n\n    #ifdef HAS_GAUSSIAN_SPLATS\n    gaussianSplatStage(attributes, positionClip);\n    #endif\n\n    // Important NOT to compute gl_Position = show * positionClip or we hit:\n    // https://github.com/CesiumGS/cesium/issues/11270\n    //\n    // We will discard points with v_pointCloudShow == 0 in the fragment shader.\n    gl_Position = positionClip;\n\n    #ifdef HAS_POINT_CLOUD_SHOW_STYLE\n    v_pointCloudShow = show;\n    #endif\n}\n";
export default _default;