Created
February 28, 2014 06:49
-
-
Save scottbyrns/9266528 to your computer and use it in GitHub Desktop.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
var texture = THREE.ImageUtils.loadTexture(this.data.sun.representation.texture); | |
var shaderMaterial = new THREE.ShaderMaterial( { | |
uniforms: { | |
surface: { | |
type: "t", | |
value: texture | |
}, | |
time: { | |
type: "f", | |
value: 0.0 | |
} | |
}, | |
vertexShader: document.getElementById( 'sunSurfaceVertexShader' ).textContent, | |
fragmentShader: document.getElementById( 'sunSurfaceFragmentShader' ).textContent | |
} ); | |
MessageController.sendMessage("app-controller", "add-render-stage", { | |
name: "render-planet-surface-sun", | |
stage: function (shaderMaterial, start) { | |
return function (delta) { | |
shaderMaterial.uniforms[ 'time' ].value = .00025 * ( start - new Date() ); | |
} | |
}.bind(this)(shaderMaterial, new Date()) | |
}); | |
<script id="sunSurfaceVertexShader" type="x-shader/x-vertex"> | |
vec3 mod289(vec3 x) | |
{ | |
return x - floor(x * (1.0 / 289.0)) * 289.0; | |
} | |
vec4 mod289(vec4 x) | |
{ | |
return x - floor(x * (1.0 / 289.0)) * 289.0; | |
} | |
vec4 permute(vec4 x) | |
{ | |
return mod289(((x*34.0)+1.0)*x); | |
} | |
vec4 taylorInvSqrt(vec4 r) | |
{ | |
return 1.79284291400159 - 0.85373472095314 * r; | |
} | |
vec3 fade(vec3 t) { | |
return t*t*t*(t*(t*6.0-15.0)+10.0); | |
} | |
// Classic Perlin noise | |
float cnoise(vec3 P) | |
{ | |
vec3 Pi0 = floor(P); // Integer part for indexing | |
vec3 Pi1 = Pi0 + vec3(1.0); // Integer part + 1 | |
Pi0 = mod289(Pi0); | |
Pi1 = mod289(Pi1); | |
vec3 Pf0 = fract(P); // Fractional part for interpolation | |
vec3 Pf1 = Pf0 - vec3(1.0); // Fractional part - 1.0 | |
vec4 ix = vec4(Pi0.x, Pi1.x, Pi0.x, Pi1.x); | |
vec4 iy = vec4(Pi0.yy, Pi1.yy); | |
vec4 iz0 = Pi0.zzzz; | |
vec4 iz1 = Pi1.zzzz; | |
vec4 ixy = permute(permute(ix) + iy); | |
vec4 ixy0 = permute(ixy + iz0); | |
vec4 ixy1 = permute(ixy + iz1); | |
vec4 gx0 = ixy0 * (1.0 / 7.0); | |
vec4 gy0 = fract(floor(gx0) * (1.0 / 7.0)) - 0.5; | |
gx0 = fract(gx0); | |
vec4 gz0 = vec4(0.5) - abs(gx0) - abs(gy0); | |
vec4 sz0 = step(gz0, vec4(0.0)); | |
gx0 -= sz0 * (step(0.0, gx0) - 0.5); | |
gy0 -= sz0 * (step(0.0, gy0) - 0.5); | |
vec4 gx1 = ixy1 * (1.0 / 7.0); | |
vec4 gy1 = fract(floor(gx1) * (1.0 / 7.0)) - 0.5; | |
gx1 = fract(gx1); | |
vec4 gz1 = vec4(0.5) - abs(gx1) - abs(gy1); | |
vec4 sz1 = step(gz1, vec4(0.0)); | |
gx1 -= sz1 * (step(0.0, gx1) - 0.5); | |
gy1 -= sz1 * (step(0.0, gy1) - 0.5); | |
vec3 g000 = vec3(gx0.x,gy0.x,gz0.x); | |
vec3 g100 = vec3(gx0.y,gy0.y,gz0.y); | |
vec3 g010 = vec3(gx0.z,gy0.z,gz0.z); | |
vec3 g110 = vec3(gx0.w,gy0.w,gz0.w); | |
vec3 g001 = vec3(gx1.x,gy1.x,gz1.x); | |
vec3 g101 = vec3(gx1.y,gy1.y,gz1.y); | |
vec3 g011 = vec3(gx1.z,gy1.z,gz1.z); | |
vec3 g111 = vec3(gx1.w,gy1.w,gz1.w); | |
vec4 norm0 = taylorInvSqrt(vec4(dot(g000, g000), dot(g010, g010), dot(g100, g100), dot(g110, g110))); | |
g000 *= norm0.x; | |
g010 *= norm0.y; | |
g100 *= norm0.z; | |
g110 *= norm0.w; | |
vec4 norm1 = taylorInvSqrt(vec4(dot(g001, g001), dot(g011, g011), dot(g101, g101), dot(g111, g111))); | |
g001 *= norm1.x; | |
g011 *= norm1.y; | |
g101 *= norm1.z; | |
g111 *= norm1.w; | |
float n000 = dot(g000, Pf0); | |
float n100 = dot(g100, vec3(Pf1.x, Pf0.yz)); | |
float n010 = dot(g010, vec3(Pf0.x, Pf1.y, Pf0.z)); | |
float n110 = dot(g110, vec3(Pf1.xy, Pf0.z)); | |
float n001 = dot(g001, vec3(Pf0.xy, Pf1.z)); | |
float n101 = dot(g101, vec3(Pf1.x, Pf0.y, Pf1.z)); | |
float n011 = dot(g011, vec3(Pf0.x, Pf1.yz)); | |
float n111 = dot(g111, Pf1); | |
vec3 fade_xyz = fade(Pf0); | |
vec4 n_z = mix(vec4(n000, n100, n010, n110), vec4(n001, n101, n011, n111), fade_xyz.z); | |
vec2 n_yz = mix(n_z.xy, n_z.zw, fade_xyz.y); | |
float n_xyz = mix(n_yz.x, n_yz.y, fade_xyz.x); | |
return 2.2 * n_xyz; | |
} | |
// Classic Perlin noise, periodic variant | |
float pnoise(vec3 P, vec3 rep) | |
{ | |
vec3 Pi0 = mod(floor(P), rep); // Integer part, modulo period | |
vec3 Pi1 = mod(Pi0 + vec3(1.0), rep); // Integer part + 1, mod period | |
Pi0 = mod289(Pi0); | |
Pi1 = mod289(Pi1); | |
vec3 Pf0 = fract(P); // Fractional part for interpolation | |
vec3 Pf1 = Pf0 - vec3(1.0); // Fractional part - 1.0 | |
vec4 ix = vec4(Pi0.x, Pi1.x, Pi0.x, Pi1.x); | |
vec4 iy = vec4(Pi0.yy, Pi1.yy); | |
vec4 iz0 = Pi0.zzzz; | |
vec4 iz1 = Pi1.zzzz; | |
vec4 ixy = permute(permute(ix) + iy); | |
vec4 ixy0 = permute(ixy + iz0); | |
vec4 ixy1 = permute(ixy + iz1); | |
vec4 gx0 = ixy0 * (1.0 / 7.0); | |
vec4 gy0 = fract(floor(gx0) * (1.0 / 7.0)) - 0.5; | |
gx0 = fract(gx0); | |
vec4 gz0 = vec4(0.5) - abs(gx0) - abs(gy0); | |
vec4 sz0 = step(gz0, vec4(0.0)); | |
gx0 -= sz0 * (step(0.0, gx0) - 0.5); | |
gy0 -= sz0 * (step(0.0, gy0) - 0.5); | |
vec4 gx1 = ixy1 * (1.0 / 7.0); | |
vec4 gy1 = fract(floor(gx1) * (1.0 / 7.0)) - 0.5; | |
gx1 = fract(gx1); | |
vec4 gz1 = vec4(0.5) - abs(gx1) - abs(gy1); | |
vec4 sz1 = step(gz1, vec4(0.0)); | |
gx1 -= sz1 * (step(0.0, gx1) - 0.5); | |
gy1 -= sz1 * (step(0.0, gy1) - 0.5); | |
vec3 g000 = vec3(gx0.x,gy0.x,gz0.x); | |
vec3 g100 = vec3(gx0.y,gy0.y,gz0.y); | |
vec3 g010 = vec3(gx0.z,gy0.z,gz0.z); | |
vec3 g110 = vec3(gx0.w,gy0.w,gz0.w); | |
vec3 g001 = vec3(gx1.x,gy1.x,gz1.x); | |
vec3 g101 = vec3(gx1.y,gy1.y,gz1.y); | |
vec3 g011 = vec3(gx1.z,gy1.z,gz1.z); | |
vec3 g111 = vec3(gx1.w,gy1.w,gz1.w); | |
vec4 norm0 = taylorInvSqrt(vec4(dot(g000, g000), dot(g010, g010), dot(g100, g100), dot(g110, g110))); | |
g000 *= norm0.x; | |
g010 *= norm0.y; | |
g100 *= norm0.z; | |
g110 *= norm0.w; | |
vec4 norm1 = taylorInvSqrt(vec4(dot(g001, g001), dot(g011, g011), dot(g101, g101), dot(g111, g111))); | |
g001 *= norm1.x; | |
g011 *= norm1.y; | |
g101 *= norm1.z; | |
g111 *= norm1.w; | |
float n000 = dot(g000, Pf0); | |
float n100 = dot(g100, vec3(Pf1.x, Pf0.yz)); | |
float n010 = dot(g010, vec3(Pf0.x, Pf1.y, Pf0.z)); | |
float n110 = dot(g110, vec3(Pf1.xy, Pf0.z)); | |
float n001 = dot(g001, vec3(Pf0.xy, Pf1.z)); | |
float n101 = dot(g101, vec3(Pf1.x, Pf0.y, Pf1.z)); | |
float n011 = dot(g011, vec3(Pf0.x, Pf1.yz)); | |
float n111 = dot(g111, Pf1); | |
vec3 fade_xyz = fade(Pf0); | |
vec4 n_z = mix(vec4(n000, n100, n010, n110), vec4(n001, n101, n011, n111), fade_xyz.z); | |
vec2 n_yz = mix(n_z.xy, n_z.zw, fade_xyz.y); | |
float n_xyz = mix(n_yz.x, n_yz.y, fade_xyz.x); | |
return 2.2 * n_xyz; | |
} | |
varying vec2 vUv; | |
varying float noise; | |
uniform float time; | |
float turbulence( vec3 p ) { | |
float w = 100.0; | |
float t = -.5; | |
for (float f = 1.0 ; f <= 10.0 ; f++ ){ | |
float power = pow( 2.0, f ); | |
t += abs( pnoise( vec3( power * p ), vec3( 10.0, 10.0, 10.0 ) ) / power ); | |
} | |
return t; | |
} | |
void main() { | |
vUv = uv; | |
// add time to the noise parameters so it's animated | |
noise = 10.0 * -.10 * turbulence( 1.0 * normal + time ); | |
float b = 2.0 * pnoise( 0.25 * position + vec3( 2.0 * time ), vec3( 100.0 ) ); | |
float displacement = - noise + b; | |
vec3 newPosition = position + normal * (displacement/2.0); | |
gl_Position = projectionMatrix * modelViewMatrix * vec4( newPosition, 1.0 ); | |
} | |
</script> | |
<script id="sunSurfaceFragmentShader" type="x-shader/x-fragment"> | |
varying vec2 vUv; | |
varying float noise; | |
uniform sampler2D surface; | |
void main() { | |
vec4 color = texture2D( surface, vUv ); | |
gl_FragColor = vec4( color.rgb, 1.0 ); | |
} | |
</script> |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment