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/*
* lighting.vert
*
* Lighting calculations
*
* (c) 2007-2008 Thomas White <taw27@cam.ac.uk>
*
* thrust3d - a silly game
*
*/
varying vec3 pos;
varying vec3 normal;
varying vec3 light0vc;
varying vec3 light1vc;
varying vec3 col_ambi_diff;
varying vec3 col_emit;
varying float shininess;
void main() {
vec4 vert;
vert = gl_ModelViewMatrix * gl_Vertex;
pos = vert.xyz;
normal = gl_NormalMatrix * gl_Normal;
/* Light 0: Lander craft's spotlight */
light0vc = gl_LightSource[0].position.xyz - vert.xyz; /* Don't normalise here */
/* Light 1: Diffuse background glow */
light1vc = normalize(vec3(gl_LightSource[1].position));
/* Material properties */
col_ambi_diff = gl_Color.rgb;
col_emit = gl_FrontMaterial.emission.rgb;
shininess = gl_FrontMaterial.shininess;
/* Coordinates */
gl_TexCoord[0] = gl_TextureMatrix[0] * gl_MultiTexCoord0;
gl_Position = ftransform();
}
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