--- cvsroot/libgender/material.C	2004/11/07 02:28:18	1.45
+++ cvsroot/libgender/material.C	2004/11/07 02:36:38	1.46
@@ -90,7 +90,11 @@
       {
         using namespace shader::compile;
 
-        z (vout.position) = (log2 (max (z (vout.position), 0)) * (2 / log2 (1e10)) - 1) * w (vout.position);
+        temp_1f lz;
+        
+        // TODO: negative z is not calculated in an acceptable way
+        lz = z (vout.position);
+        z (vout.position) = (log2 (lz) * (2 / log2 (1e10)) - 1) * w (vout.position);
       }
 
       vsh_src = shader::shader_builder::stop ();
@@ -106,13 +110,6 @@
       else
         shader::compile::fout.frag_color = shader::compile::float4 (1., 0., 1., 1.);
 
-       {
-        using namespace shader::compile;
-        //x (fout.frag_color) = Z;//D
-        //y (fout.frag_color) = Z;//D
-        //z (fout.frag_color) = Z;//D
-       }
-
       fsh_src = shader::shader_builder::stop ();
 
       shader::program_object po = shader::get_program (vsh_src, fsh_src);