Sha256: 05006092cbcfcaeb89fd54b49a5173cc41f4c445170cb92ad627cbbc732703da
Contents?: true
Size: 1.04 KB
Versions: 14
Compression:
Stored size: 1.04 KB
Contents
uniform vec4 lightWoodColor;
uniform vec4 darkWoodColor;
uniform float ringFrequency;
uniform vec2 noiseScale;
uniform float grainFrequency;
czm_material czm_getMaterial(czm_materialInput materialInput)
{
czm_material material = czm_getDefaultMaterial(materialInput);
//Based on wood shader from OpenGL Shading Language (3rd edition) pg. 455
vec2 st = materialInput.st;
vec2 noisevec;
noisevec.x = czm_snoise(st * noiseScale.x);
noisevec.y = czm_snoise(st * noiseScale.y);
vec2 location = st + noisevec;
float dist = sqrt(location.x * location.x + location.y * location.y);
dist *= ringFrequency;
float r = fract(dist + noisevec[0] + noisevec[1]) * 2.0;
if(r > 1.0)
r = 2.0 - r;
vec4 color = mix(lightWoodColor, darkWoodColor, r);
//streaks
r = abs(czm_snoise(vec2(st.x * grainFrequency, st.y * grainFrequency * 0.02))) * 0.2;
color.rgb += lightWoodColor.rgb * r;
material.diffuse = color.rgb;
material.alpha = color.a;
return material;
}
Version data entries
14 entries across 14 versions & 1 rubygems