@luma.gl/shadertools
Version:
Shader module system for luma.gl
31 lines • 1.15 kB
JavaScript
import { random } from '../utils/random';
const fs = "uniform float radius;\nuniform vec2 delta;\n\nvec4 triangleBlur_sampleColor(sampler2D texture, vec2 texSize, vec2 texCoord) {\n vec2 adjustedDelta = delta * radius / texSize;\n\n vec4 color = vec4(0.0);\n float total = 0.0;\n float offset = random(vec3(12.9898, 78.233, 151.7182), 0.0);\n\n for (float t = -30.0; t <= 30.0; t++) {\n float percent = (t + offset - 0.5) / 30.0;\n float weight = 1.0 - abs(percent);\n vec4 sample = texture2D(texture, texCoord + adjustedDelta * percent);\n sample.rgb *= sample.a;\n\n color += sample * weight;\n total += weight;\n }\n\n color = color / total;\n color.rgb /= color.a + 0.00001;\n\n return color;\n}\n";
const uniforms = {
radius: {
value: 20,
min: 0,
softMax: 100
},
delta: {
value: [1, 0],
private: true
}
};
export const triangleBlur = {
name: 'triangleBlur',
uniforms,
fs,
dependencies: [random],
passes: [{
sampler: true,
uniforms: {
delta: [1, 0]
}
}, {
sampler: true,
uniforms: {
delta: [0, 1]
}
}]
};
//# sourceMappingURL=triangleblur.js.map