Add shading for shapes and the floor

shader/shape/basic.frag

@@ -1,10 +1,14 @@
 #version 450 core
 in vec4 vCol;
 in vec4 vPos;
+in vec4 vNorm;
 layout (location=0) out vec4 fCol;
 layout (location=1) out vec4 fPos;
+layout (location=2) out vec4 fNorm;
 void main()
 {
   fCol = vCol;
-  fPos = vec4(vPos.xyz,1);
+  fPos = vPos;
+  fNorm = vNorm;
+  //fNorm = vec4(vPos.x,vPos.y+2,vPos.z,1);
 }