diff --git a/basegraph.cpp b/basegraph.cpp
index c99aecf4..6c61c71d 100644
--- a/basegraph.cpp
+++ b/basegraph.cpp
@@ -363,20 +363,17 @@ void display_data::set_projection(int ed) {
       
       }
     
-    glUniform1i(glhr::current->tInvExpTable, glhr::INVERSE_EXP_BINDING);
     glActiveTexture(GL_TEXTURE0 + glhr::INVERSE_EXP_BINDING);
     glBindTexture(GL_TEXTURE_3D, invexpid);
 
     glActiveTexture(GL_TEXTURE0 + 0);
     
-    glUniform1f(glhr::current->uPRECX, solv::PRECX);
-    glUniform1f(glhr::current->uPRECY, solv::PRECY);
-    glUniform1f(glhr::current->uPRECZ, solv::PRECZ);
+    glhr::set_solv_prec(solv::PRECX, solv::PRECY, solv::PRECZ);    
     }
 
   if(glhr::new_shader_projection == glhr::shader_projection::standardSL2) {
-    glUniform1f(glhr::current->uIndexSL, 0);
-    glUniform1i(glhr::current->uIterations, slr::steps);
+    glhr::set_index_sl(0);
+    glhr::set_sl_iterations(slr::steps);
     }
 
   auto cd = current_display;
diff --git a/drawing.cpp b/drawing.cpp
index dcfaf823..fbab8013 100644
--- a/drawing.cpp
+++ b/drawing.cpp
@@ -661,7 +661,7 @@ void dqi_poly::gldraw() {
 
   if(min_slr < max_slr) {
     min_slr++;
-    glUniform1f(glhr::current->uIndexSL, M_PI * min_slr);
+    glhr::set_index_sl(M_PI * min_slr);
     goto next_slr;
     }
   }
@@ -1159,7 +1159,7 @@ void dqi_poly::draw() {
       min_slr = ceil((-zr - z) / M_PI);
       max_slr = floor((zr - z) / M_PI);
       if(min_slr > max_slr) return;
-      glUniform1f(glhr::current->uIndexSL, M_PI * min_slr);
+      glhr::set_index_sl(M_PI * min_slr);
       }
     set_width(get_width(this));
     flags &= ~POLY_INVERSE;
diff --git a/shaders.cpp b/shaders.cpp
index 9fddda03..297272c5 100644
--- a/shaders.cpp
+++ b/shaders.cpp
@@ -381,6 +381,21 @@ struct GLprogram {
   
   };
 
+EX void set_index_sl(ld x) {
+  glUniform1f(glhr::current->uIndexSL, x);
+  }
+
+EX void set_sl_iterations(int steps) {
+  glUniform1i(glhr::current->uIterations, steps);
+  }
+
+EX void set_solv_prec(int x, int y, int z) {
+  glUniform1i(glhr::current->tInvExpTable, glhr::INVERSE_EXP_BINDING);
+  glUniform1f(glhr::current->uPRECX, x);
+  glUniform1f(glhr::current->uPRECY, y);
+  glUniform1f(glhr::current->uPRECZ, z);
+  }
+
 GLprogram *programs[gmMAX][int(shader_projection::MAX)];
 
 string stringbuilder() { return ""; }