uniform vec4 lightColor;
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uniform vec4 darkColor;
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uniform vec2 repeat;
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czm_material czm_getMaterial(czm_materialInput materialInput)
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{
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czm_material material = czm_getDefaultMaterial(materialInput);
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// From Stefan Gustavson's Procedural Textures in GLSL in OpenGL Insights
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float b = smoothstep(0.3, 0.32, length(fract(repeat * materialInput.st) - 0.5)); // 0.0 or 1.0
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vec4 color = mix(lightColor, darkColor, b);
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color = czm_gammaCorrect(color);
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material.diffuse = color.rgb;
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material.alpha = color.a;
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return material;
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}
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