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/**
* @file terrainV.glsl
*
* $LicenseInfo:firstyear=2007&license=viewerlgpl$
* $/LicenseInfo$
*/
vec4 calcLighting(vec3 pos, vec3 norm, vec4 color, vec4 baseCol);
vec4 texgen_object(vec4 vpos, vec4 tc, mat4 mat, vec4 tp0, vec4 tp1)
{
vec4 tcoord;
tcoord.x = dot(vpos, tp0);
tcoord.y = dot(vpos, tp1);
tcoord.z = tc.z;
tcoord.w = tc.w;
tcoord = mat * tcoord;
return tcoord;
}
void main()
{
//transform vertex
gl_Position = gl_ModelViewProjectionMatrix * gl_Vertex;
vec4 pos = gl_ModelViewMatrix * gl_Vertex;
vec3 norm = normalize(gl_NormalMatrix * gl_Normal);
vec4 color = calcLighting(pos.xyz, norm, vec4(1,1,1,1), gl_Color);
gl_FrontColor = color;
gl_TexCoord[0] = texgen_object(gl_Vertex,gl_MultiTexCoord0,gl_TextureMatrix[0],gl_ObjectPlaneS[0],gl_ObjectPlaneT[0]);
gl_TexCoord[1] = gl_TextureMatrix[1]*gl_MultiTexCoord1;
gl_TexCoord[2] = texgen_object(gl_Vertex,gl_MultiTexCoord2,gl_TextureMatrix[2],gl_ObjectPlaneS[2],gl_ObjectPlaneT[2]);
gl_TexCoord[3] = gl_TextureMatrix[3]*gl_MultiTexCoord3;
}
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