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1 | // |
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2 | // Vertex shader for producing animated clouds (mostly cloudy) |
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3 | // |
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4 | // Authors: John Kessenich, 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 vec3 LightPos; |
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15 | uniform float Scale; |
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16 | |
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17 | void main(void) |
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18 | { |
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19 | vec3 ECposition = vec3 (gl_ModelViewMatrix * gl_Vertex); |
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20 | MCposition = vec3 (gl_Vertex) * Scale; |
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21 | vec3 tnorm = normalize(vec3 (gl_NormalMatrix * gl_Normal)); |
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22 | LightIntensity = dot(normalize(LightPos - ECposition), tnorm); |
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23 | LightIntensity *= 1.5; |
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24 | gl_Position = ftransform(); |
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25 | } |
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