Add existing to tracked

node_modules/@cesium/engine/Source/Shaders/Materials/DotMaterial.js

@@ -0,0 +1,20 @@
+//This file is automatically rebuilt by the Cesium build process.
+export default "uniform vec4 lightColor;\n\
+uniform vec4 darkColor;\n\
+uniform vec2 repeat;\n\
+\n\
+czm_material czm_getMaterial(czm_materialInput materialInput)\n\
+{\n\
+    czm_material material = czm_getDefaultMaterial(materialInput);\n\
+\n\
+    // From Stefan Gustavson's Procedural Textures in GLSL in OpenGL Insights\n\
+    float b = smoothstep(0.3, 0.32, length(fract(repeat * materialInput.st) - 0.5));  // 0.0 or 1.0\n\
+\n\
+    vec4 color = mix(lightColor, darkColor, b);\n\
+    color = czm_gammaCorrect(color);\n\
+    material.diffuse = color.rgb;\n\
+    material.alpha = color.a;\n\
+\n\
+    return material;\n\
+}\n\
+";