!!ARBvp1.0

 

# Eingangsattribute

ATTRIB iPos    = vertex.position;

ATTRIB iNormal = vertex.normal;

 

# Programmparameter

PARAM mvinv[4]    = { state.matrix.modelview.invtrans };

PARAM mvp[4]      = { state.matrix.mvp };

PARAM lightDir    = state.light[0].position;

PARAM halfDir     = state.light[0].half;

PARAM specExp     = state.material.shininess;

PARAM ambientCol  = state.lightprod[0].ambient;

PARAM diffuseCol  = state.lightprod[0].diffuse;

PARAM specularCol = state.lightprod[0].specular;

 

# Temporäre Variablen

TEMP eyeNormal, temp, dots, lightcoefs;

 

# Ausgangsattribute

OUTPUT oPos   = result.position;

OUTPUT oColor = result.color;

 

# Vertex in Clipkoordinaten umwandeln

DP4 oPos.x, mvp[0], iPos;

DP4 oPos.y, mvp[1], iPos;

DP4 oPos.z, mvp[2], iPos;

DP4 oPos.w, mvp[3], iPos;

 

# Normale in eyespace transformieren

DP3 eyeNormal.x, mvinv[0], iNormal;

DP3 eyeNormal.y, mvinv[1], iNormal;

DP3 eyeNormal.z, mvinv[2], iNormal;

 

# Diffuses und spekulatives Punktprodukt berechnen

# und unter Nutzung von LIT die

# Beleuchtungskoeffizienten berechnen

DP3 dots.x, eyeNormal, lightDir;

DP3 dots.y, eyeNormal, halfDir;

MOV dots.w, specExp.x;

LIT lightcoefs, dots;

 

# Farbbestandteile sammeln und addieren

MAD temp, lightcoefs.y, diffuseCol, ambientCol;

MAD oColor.xyz, lightcoefs.z, specularCol, temp;

MOV oColor.w, diffuseCol.w;

MUL oColor.xyz, temp, vertex.color.primary;

 

# Texturkoordinaten durchschleifen

MOV result.texcoord, vertex.texcoord;

 

END