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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 | //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\
vec2 st = materialInput.st;\n\
\n\
// From Stefan Gustavson's Procedural Textures in GLSL in OpenGL Insights\n\
float b = mod(floor(repeat.s * st.s) + floor(repeat.t * st.t), 2.0); // 0.0 or 1.0\n\
\n\
// Find the distance from the closest separator (region between two colors)\n\
float scaledWidth = fract(repeat.s * st.s);\n\
scaledWidth = abs(scaledWidth - floor(scaledWidth + 0.5));\n\
float scaledHeight = fract(repeat.t * st.t);\n\
scaledHeight = abs(scaledHeight - floor(scaledHeight + 0.5));\n\
float value = min(scaledWidth, scaledHeight);\n\
\n\
vec4 currentColor = mix(lightColor, darkColor, b);\n\
vec4 color = czm_antialias(lightColor, darkColor, currentColor, value, 0.03);\n\
\n\
color = czm_gammaCorrect(color);\n\
material.diffuse = color.rgb;\n\
material.alpha = color.a;\n\
\n\
return material;\n\
}\n\
";
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