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varying vec3 normalVec;
varying vec3 viewVec;
varying vec4 diffuse, ambient, specular;
varying vec3 lightDir, /* halfVector, */ normalView;
//varying float dist;
void main()
{
gl_TexCoord[0] = gl_MultiTexCoord0;
//gl_TexCoord[0] = gl_MultiTexCoord1;
gl_Position = gl_ModelViewProjectionMatrix * gl_Vertex;
gl_FrontColor = gl_FrontMaterial.diffuse;
gl_BackColor = gl_BackMaterial.diffuse;
// Compute position and normal in world space
vec3 positionW = gl_Vertex.xyz; ;
vec3 normalW = normalize(gl_Normal);
vec3 eyePositionW = gl_ModelViewMatrixInverse[3].xyz;
// Compute the incident and reflected vectors
vec3 I = positionW - eyePositionW;
//reflectVec = reflect(I, normalW);
normalVec = normalW;
viewVec = I;
normalView = gl_NormalMatrix * gl_Normal;
vec4 ecPos = gl_ModelViewMatrix * gl_Vertex;
vec3 aux = vec3(gl_LightSource[0].position-ecPos);
lightDir = normalize(aux);
//dist = length(aux);
//halfVector = normalize(gl_LightSource[0].halfVector.xyz);
/* Compute the diffuse, ambient and globalAmbient terms */
diffuse = gl_FrontMaterial.diffuse * gl_LightSource[0].diffuse;
ambient = gl_FrontMaterial.ambient * gl_LightSource[0].ambient + gl_LightModel.ambient * gl_FrontMaterial.ambient;
specular = gl_FrontMaterial.specular * gl_LightSource[0].specular;
}
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