29 lines
728 B
GLSL
29 lines
728 B
GLSL
// -*-C++-*-
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// -*-C++-*-
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// Texture switching based on face slope and snow level
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// based on earlier work by Frederic Bouvier, Tim Moore, and Yves Sablonier.
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// © Emilian Huminiuc 2011
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#version 120
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varying float RawPosZ;
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varying vec3 WorldPos;
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varying vec3 normal;
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varying vec3 Vnormal;
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uniform mat4 osg_ViewMatrixInverse;
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void setupShadows(vec4 eyeSpacePos);
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void main()
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{
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RawPosZ = gl_Vertex.z;
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vec4 eyePos = gl_ModelViewMatrix * gl_Vertex;
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WorldPos = (osg_ViewMatrixInverse * eyePos).xyz;
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gl_Position = ftransform();
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gl_TexCoord[0] = gl_TextureMatrix[0] * gl_MultiTexCoord0;
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normal = normalize(gl_Normal);
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Vnormal = normalize(gl_NormalMatrix * gl_Normal);
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setupShadows(eyePos);
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}
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