1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
|
//
// Fragment shader for producing clouds (mostly cloudy)
//
// Author: Randi Rost
//
// Copyright (c) 2002-2004 3Dlabs Inc. Ltd.
//
// See 3Dlabs-License.txt for license information
//
varying float LightIntensity;
varying vec3 MCposition;
uniform sampler3D Noise;
uniform vec3 SkyColor; // (0.0, 0.0, 0.8)
uniform vec3 CloudColor; // (0.8, 0.8, 0.8)
void main (void)
{
vec4 noisevec = texture3D(Noise, MCposition);
float intensity = (noisevec[0] + noisevec[1] +
noisevec[2] + noisevec[3] + 0.03125) * 1.5;
vec3 color = mix(SkyColor, CloudColor, intensity) * LightIntensity;
gl_FragColor = vec4 (color, 1.0);
}
|
