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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,44 @@ | ||
| /* global AFRAME, THREE */ | ||
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| const vertexShader = require("./shaders/vertex.glsl"); | ||
| const fragmentShader = require("./shaders/fragment.glsl"); | ||
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| AFRAME.registerComponent("material-displacement", { | ||
| /** | ||
| * Creates a new THREE.ShaderMaterial using the two shaders defined | ||
| * in vertex.glsl and fragment.glsl. | ||
| */ | ||
| init: function() { | ||
| this.material = new THREE.ShaderMaterial({ | ||
| uniforms: { | ||
| tExplosion: { | ||
| type: "t", | ||
| value: THREE.ImageUtils.loadTexture( | ||
| require("./shaders/explosion.png") | ||
| ) | ||
| }, | ||
| time: { type: "f", value: 0.0 } | ||
| }, | ||
| vertexShader, | ||
| fragmentShader | ||
| }); | ||
| this.el.addEventListener("model-loaded", () => this.update()); | ||
| }, | ||
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| /** | ||
| * Apply the material to the current entity. | ||
| */ | ||
| update: function() { | ||
| const mesh = this.el.getObject3D("mesh"); | ||
| if (mesh) { | ||
| mesh.material = this.material; | ||
| } | ||
| }, | ||
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| /** | ||
| * On each frame, update the 'time' uniform in the shaders. | ||
| */ | ||
| tick: function(t) { | ||
| this.material.uniforms.time.value = t / 2000; | ||
| } | ||
| }); |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,16 @@ | ||
| varying float noise; | ||
| uniform sampler2D tExplosion; | ||
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| float random( vec3 scale, float seed ){ | ||
| return fract( sin( dot( gl_FragCoord.xyz + seed, scale ) ) * 43758.5453 + seed ) ; | ||
| } | ||
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| void main() { | ||
| // get a random offset | ||
| float r = .01 * random( vec3( 12.9898, 78.233, 151.7182 ), 0.0 ); | ||
| // lookup vertically in the texture, using noise and offset | ||
| // to get the right RGB colour | ||
| vec2 tPos = vec2( 0, 1.0 - 1.3 * noise + r ); | ||
| vec4 color = texture2D( tExplosion, tPos ); | ||
| gl_FragColor = vec4( color.rgb, 1.0 ); | ||
| } |
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,34 @@ | ||
| #pragma glslify: pnoise3 = require(glsl-noise/periodic/3d) | ||
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| // | ||
| // Based on @thespite's article: | ||
| // | ||
| // "Vertex displacement with a noise function using GLSL and three.js" | ||
| // Source: https://www.clicktorelease.com/blog/vertex-displacement-noise-3d-webgl-glsl-three-js/ | ||
| // | ||
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| varying float noise; | ||
| uniform float time; | ||
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| float turbulence( vec3 p ) { | ||
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| float w = 100.0; | ||
| float t = -.5; | ||
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| for (float f = 1.0 ; f <= 10.0 ; f++ ){ | ||
| float power = pow( 2.0, f ); | ||
| t += abs( pnoise3( vec3( power * p ), vec3( 10.0, 10.0, 10.0 ) ) / power ); | ||
| } | ||
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| return t; | ||
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| } | ||
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| void main() { | ||
| noise = 10.0 * -.10 * turbulence( .5 * normal + time / 3.0 ); | ||
| float b = 5.0 * pnoise3( 0.05 * position, vec3( 100.0 ) ); | ||
| float displacement = (- 10. * noise + b) / 50.0; | ||
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| vec3 newPosition = position + normal * displacement; | ||
| gl_Position = projectionMatrix * modelViewMatrix * vec4( newPosition, 1.0 ); | ||
| } |
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