Commit before attempt to remove geometry shaders from shadow extrusion

2023-02-23 23:10:00 +00:00
parent f98f95d92f
commit c73e8af72a
15 changed files with 28 additions and 31 deletions
@@ -18,24 +18,19 @@ void main()
    vec4 p0 = gl_in[0].gl_Position ;
    vec4 p1 = gl_in[1].gl_Position ;
    vec4 p2 = gl_in[2].gl_Position ;
-    if ( //dot( p0.xyz - vec3 (0,0,1), cross( p0.xyz - p1.xyz, p1.xyz - p2.xyz)) < 0
-           // && 
+    if ( //if Light Source is below all vertices, draw cap 
+        // TODO think about when LS is beside the object
            ( p0.z - lightPos.z > 0 )
            && ( p1.z - lightPos.z > 0 )
            && ( p2.z - lightPos.z > 0 )
            )
    {
-        // front cap
+        // the front cap
        vec4 v1 = vec4 (0,0,1,0) ;
        gl_Position = theMat * projNear(p0); EmitVertex();
        gl_Position = theMat * projNear(p1); EmitVertex();
        gl_Position = theMat * projNear(p2); EmitVertex();
        EndPrimitive();
-        // if light points downwards onto surface, draw back cap too
-        if (dot ( p0.xyz - lightPos, vec3 ( 0,0,1) ) > 0)
-        {
-        }
-        else {}
    }
    else {}
 }