83 lines
2.4 KiB
JavaScript
83 lines
2.4 KiB
JavaScript
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/**
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* Alternative torch illumination shader
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*/
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class FlameIlluminationShader extends AdaptiveIlluminationShader {
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static fragmentShader = `
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${this.SHADER_HEADER}
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${this.PERCEIVED_BRIGHTNESS}
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void main() {
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${this.FRAGMENT_BEGIN}
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${this.TRANSITION}
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finalColor *= brightnessPulse;
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${this.ADJUSTMENTS}
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${this.FALLOFF}
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${this.FRAGMENT_END}
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}`;
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/** @inheritdoc */
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static defaultUniforms = ({...super.defaultUniforms, brightnessPulse: 1});
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}
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/* -------------------------------------------- */
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/**
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* Alternative torch coloration shader
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*/
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class FlameColorationShader extends AdaptiveColorationShader {
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static fragmentShader = `
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${this.SHADER_HEADER}
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${this.PRNG}
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${this.NOISE}
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${this.FBMHQ(3)}
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${this.PERCEIVED_BRIGHTNESS}
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vec2 scale(in vec2 uv, in float scale) {
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mat2 scalemat = mat2(scale, 0.0, 0.0, scale);
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uv -= PIVOT;
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uv *= scalemat;
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uv += PIVOT;
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return uv;
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}
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void main() {
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${this.FRAGMENT_BEGIN}
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vec2 uv = scale(vUvs, 10.0 * ratio);
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float intens = pow(0.1 * intensity, 2.0);
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float fratioInner = ratio * (intens * 0.5) -
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(0.005 *
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fbm( vec2(
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uv.x + time * 8.01,
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uv.y + time * 10.72), 1.0));
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float fratioOuter = ratio - (0.007 *
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fbm( vec2(
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uv.x + time * 7.04,
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uv.y + time * 9.51), 2.0));
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float fdist = max(dist - fratioInner * intens, 0.0);
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float flameDist = smoothstep(clamp(0.97 - fratioInner, 0.0, 1.0),
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clamp(1.03 - fratioInner, 0.0, 1.0),
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1.0 - fdist);
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float flameDistInner = smoothstep(clamp(0.95 - fratioOuter, 0.0, 1.0),
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clamp(1.05 - fratioOuter, 0.0, 1.0),
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1.0 - fdist);
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vec3 flameColor = color * 8.0;
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vec3 flameFlickerColor = color * 1.2;
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finalColor = mix(mix(color, flameFlickerColor, flameDistInner),
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flameColor,
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flameDist) * brightnessPulse * colorationAlpha;
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${this.COLORATION_TECHNIQUES}
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${this.ADJUSTMENTS}
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${this.FALLOFF}
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${this.FRAGMENT_END}
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}
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`;
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/** @inheritdoc */
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static defaultUniforms = ({ ...super.defaultUniforms, brightnessPulse: 1});
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}
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