The GtkRadiant sources as originally released under the GPL license.

setup/data/tools/gl/zfill_fp.glp

@@ -0,0 +1,19 @@
+!!ARBfp1.0
+# cgc version 1.3.0001, build date Aug  4 2004 10:01:10
+# command line args: -profile arbfp1
+# source file: ..\..\setup\data\tools\gl\zfill_arbfp1.cg
+#vendor NVIDIA Corporation
+#version 1.0.02
+#profile arbfp1
+#program main
+#semantic main.colormap
+#var float4 IN.position :  :  : 0 : 0
+#var float4 IN.tex0 : $vin.TEX0 : TEX0 : 0 : 1
+#var sampler2D colormap :  : texunit 0 : 1 : 1
+#var float4 main.color : $vout.COL : COL : -1 : 1
+#const c[0] = 0
+PARAM c[1] = { { 0 } };
+MOV result.color.xyz, c[0].x;
+TEX result.color.w, fragment.texcoord[0], texture[0], 2D;
+END
+# 2 instructions, 0 R-regs