Last change
on this file since 4509 was
3939,
checked in by bensch, 18 years ago
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data/trunk: merged the data from the atmos branche back
|
File size:
752 bytes
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Line | |
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1 | // |
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2 | // Fragment shader for producing animated clouds (mostly cloudy) |
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3 | // |
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4 | // Author: Randi Rost |
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5 | // |
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6 | // Copyright (c) 2002-2004 3Dlabs Inc. Ltd. |
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7 | // |
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8 | // See 3Dlabs-License.txt for license information |
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9 | // |
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10 | |
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11 | varying float LightIntensity; |
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12 | varying vec3 MCposition; |
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13 | |
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14 | uniform sampler3D Noise; |
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15 | uniform vec3 SkyColor; // (0.0, 0.0, 0.8) |
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16 | uniform vec3 CloudColor; // (0.8, 0.8, 0.8) |
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17 | uniform vec3 Offset; // updated each frame by the application |
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18 | |
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19 | void main (void) |
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20 | { |
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21 | vec4 noisevec = texture3D(Noise, MCposition + Offset); |
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22 | |
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23 | float intensity = (noisevec[0] + noisevec[1] + |
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24 | noisevec[2] + noisevec[3]) * 1.5; |
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25 | |
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26 | vec3 color = mix(SkyColor, CloudColor, intensity) * LightIntensity; |
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27 | |
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28 | gl_FragColor = vec4 (color, 1.0); |
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29 | } |
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