Sha256: eaea267bb92352968ad7ed1818a3ebb500b26fadb3b0f71bd9622db9aa3a0186
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Versions: 14
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Stored size: 1.39 KB
Contents
uniform vec4 brickColor;
uniform vec4 mortarColor;
uniform vec2 brickSize;
uniform vec2 brickPct;
uniform float brickRoughness;
uniform float mortarRoughness;
#define Integral(x, p) ((floor(x) * p) + max(fract(x) - (1.0 - p), 0.0))
czm_material czm_getMaterial(czm_materialInput materialInput)
{
czm_material material = czm_getDefaultMaterial(materialInput);
// From OpenGL Shading Language (3rd edition) pg. 194, 501
vec2 st = materialInput.st;
vec2 position = st / brickSize;
if(fract(position.y * 0.5) > 0.5) {
position.x += 0.5;
}
//calculate whether to use brick or mortar (does AA)
vec2 filterWidth = vec2(0.02);
vec2 useBrick = (Integral(position + filterWidth, brickPct) -
Integral(position, brickPct)) / filterWidth;
float useBrickFinal = useBrick.x * useBrick.y;
vec4 color = mix(mortarColor, brickColor, useBrickFinal);
//Apply noise to brick
vec2 brickScaled = vec2(st.x / 0.1, st.y / 0.006);
float brickNoise = abs(czm_snoise(brickScaled) * brickRoughness / 5.0);
color.rg += brickNoise * useBrickFinal;
//Apply noise to mortar
vec2 mortarScaled = st / 0.005;
float mortarNoise = max(czm_snoise(mortarScaled) * mortarRoughness, 0.0);
color.rgb += mortarNoise * (1.0 - useBrickFinal);
material.diffuse = color.rgb;
material.alpha = color.a;
return material;
}
Version data entries
14 entries across 14 versions & 1 rubygems