diff --git a/game/res/shaders/chunk.frag b/game/res/shaders/chunk.frag
index 3799d9f..0c7b037 100644
--- a/game/res/shaders/chunk.frag
+++ b/game/res/shaders/chunk.frag
@@ -17,5 +17,5 @@ void main ()
   result = mix (result, texture2D (materials[2], f_uv), f_material[1]);
   result = mix (result, texture2D (materials[3], f_uv), f_material[2]);
   
-  gl_FragColor = result * vec4(f_height, f_height, f_height, 1.0);
+  gl_FragColor = result;
 }
diff --git a/game/res/shaders/chunk.vert b/game/res/shaders/chunk.vert
index 50abf04..d75c126 100644
--- a/game/res/shaders/chunk.vert
+++ b/game/res/shaders/chunk.vert
@@ -12,7 +12,7 @@ varying float f_height;
 
 void main ()
 {
-  f_uv = position.xy / 8.0;
+  f_uv = position.xz / 4.0;
   f_material = material;
   f_height = position.y;
   
diff --git a/game/src/chunk/chunk.c b/game/src/chunk/chunk.c
index 080e170..ce8e310 100644
--- a/game/src/chunk/chunk.c
+++ b/game/src/chunk/chunk.c
@@ -23,7 +23,7 @@ Chunk_noise (Chunk *chunk, int xoffset, int yoffset)
 	  (void) xoffset; (void) yoffset;
 	  float val = sinf (x) + sinf (y);
 	  (void) val;
-	  chunk->heightmap[INDEX (x, y)] = (val + 0.5);
+	  chunk->heightmap[INDEX (x, y)] = val;
 	  chunk->materialmap[INDEX (x, y)] = (int) val;
 	}
     }
diff --git a/game/src/chunk/chunkmesh.h b/game/src/chunk/chunkmesh.h
index 110ba02..abee039 100644
--- a/game/src/chunk/chunkmesh.h
+++ b/game/src/chunk/chunkmesh.h
@@ -6,6 +6,7 @@
 #include "../math_3d.h"
 #include "chunk.h"
 
+/* TODO: set to + 1 */
 #define CHUNKMESH_DIM (CHUNK_DIM+1)
 #define CHUNKMESH_SIZE (CHUNKMESH_DIM*CHUNKMESH_DIM)
 #define CMINDEX(x, y) (CHUNKMESH_DIM * (y) + (x))
diff --git a/game/src/main.c b/game/src/main.c
index 5ed9db9..4169b2d 100644
--- a/game/src/main.c
+++ b/game/src/main.c
@@ -78,6 +78,10 @@ SDL_AppInit (void **appstate, int argc, char **argv)
   Chunk_noise (&chunk, 0, 0);
   test_chunkmesh = ChunkMesh_from_Chunk_and_neighbors (&chunk, NULL, NULL, NULL);
 
+  program_use (resources.programs[1]);
+  int arr[4] = { 0, 1, 2, 3 };
+  program_set_int_array (resources.programs[1], "materials", 4, arr);
+
   /* Set up game state. */
   game_state.last_time = SDL_GetTicks ();
   
diff --git a/game/src/program.c b/game/src/program.c
index 882a50e..e220ccc 100644
--- a/game/src/program.c
+++ b/game/src/program.c
@@ -72,6 +72,12 @@ program_create (const char *v_src, const char *f_src)
   return program;
 }
 
+void
+program_set_int_array (int program, const char *name, size_t count, int *value)
+{
+  glUniform1iv (glGetUniformLocation (program, name), count, value);
+}
+
 void
 program_set_mat4 (int program, const char *name, mat4_t value)
 {
diff --git a/game/src/program.h b/game/src/program.h
index f3dab10..d2ed27b 100644
--- a/game/src/program.h
+++ b/game/src/program.h
@@ -11,5 +11,6 @@
 void shader_fail (int shader);
 void program_fail (int program);
 int program_create (const char *v_src, const char *f_src);
+void program_set_int_array (int program, const char *name, size_t count, int *value);
 void program_set_mat4 (int program, const char *name, mat4_t value);
 void program_print (int program);