StackGenVis: Alignment of Data, Algorithms, and Models for Stacking Ensemble Learning Using Performance Metrics
https://doi.org/10.1109/TVCG.2020.3030352
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43 lines
1.3 KiB
43 lines
1.3 KiB
4 years ago
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precision highp float;
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#pragma glslify: beckmann = require(glsl-specular-beckmann)
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#pragma glslify: outOfRange = require(glsl-out-of-range)
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uniform vec3 lowerBound, upperBound;
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uniform float contourTint;
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uniform vec4 contourColor;
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uniform sampler2D colormap;
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uniform vec3 clipBounds[2];
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uniform float roughness, fresnel, kambient, kdiffuse, kspecular, opacity;
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uniform float vertexColor;
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varying float value, kill;
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varying vec3 worldCoordinate;
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varying vec3 lightDirection, eyeDirection, surfaceNormal;
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varying vec4 vColor;
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void main() {
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if ((kill > 0.0) ||
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(outOfRange(clipBounds[0], clipBounds[1], worldCoordinate))) discard;
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vec3 N = normalize(surfaceNormal);
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vec3 V = normalize(eyeDirection);
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vec3 L = normalize(lightDirection);
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if(gl_FrontFacing) {
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N = -N;
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}
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float specular = max(beckmann(L, V, N, roughness), 0.);
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float diffuse = min(kambient + kdiffuse * max(dot(N, L), 0.0), 1.0);
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//decide how to interpolate color — in vertex or in fragment
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vec4 surfaceColor =
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step(vertexColor, .5) * texture2D(colormap, vec2(value, value)) +
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step(.5, vertexColor) * vColor;
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vec4 litColor = surfaceColor.a * vec4(diffuse * surfaceColor.rgb + kspecular * vec3(1,1,1) * specular, 1.0);
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gl_FragColor = mix(litColor, contourColor, contourTint) * opacity;
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}
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