diff --git a/src/main.rs b/src/main.rs
index 14d00e6..6fff253 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -121,8 +121,6 @@ fn main() {
             fragment: "
                 #version 140
 
-                // warning: that way maybe have a null normal
-                flat in vec3 normal;
                 in vec2 v_tex_coords;
                 flat in uint v_biome;
 
@@ -130,71 +128,65 @@ fn main() {
 
                 uniform sampler2D tex0, tex1, tex2, tex3, tex4, tex5, tex6, tex7, tex8, tex9, tex10, tex11, tex12, tex13, tex14, tex15, tex16, tex17, tex18;
 
-                const vec3 LIGHT = vec3(0.0, -1.0, 0.0);
-
                 void main() {
-                    float lum = max(dot(normalize(normal), normalize(LIGHT)), 0.0);
-                    vec4 tex;
-
                     switch (v_biome) {
                         case 0u:
-                            tex = texture(tex0, v_tex_coords);
+                            f_color = texture(tex0, v_tex_coords);
                             break;
                         case 1u:
-                            tex = texture(tex1, v_tex_coords);
+                            f_color = texture(tex1, v_tex_coords);
                             break;
                         case 2u:
-                            tex = texture(tex2, v_tex_coords);
+                            f_color = texture(tex2, v_tex_coords);
                             break;
                         case 3u:
-                            tex = texture(tex3, v_tex_coords);
+                            f_color = texture(tex3, v_tex_coords);
                             break;
                         case 4u:
-                            tex = texture(tex4, v_tex_coords);
+                            f_color = texture(tex4, v_tex_coords);
                             break;
                         case 5u:
-                            tex = texture(tex5, v_tex_coords);
+                            f_color = texture(tex5, v_tex_coords);
                             break;
                         case 6u:
-                            tex = texture(tex6, v_tex_coords);
+                            f_color = texture(tex6, v_tex_coords);
                             break;
                         case 7u:
-                            tex = texture(tex7, v_tex_coords);
+                            f_color = texture(tex7, v_tex_coords);
                             break;
                         case 8u:
-                            tex = texture(tex8, v_tex_coords);
+                            f_color = texture(tex8, v_tex_coords);
                             break;
                         case 9u:
-                            tex = texture(tex9, v_tex_coords);
+                            f_color = texture(tex9, v_tex_coords);
                             break;
                         case 10u:
-                            tex = texture(tex10, v_tex_coords);
+                            f_color = texture(tex10, v_tex_coords);
                             break;
                         case 11u:
-                            tex = texture(tex11, v_tex_coords);
+                            f_color = texture(tex11, v_tex_coords);
                             break;
                         case 12u:
-                            tex = texture(tex12, v_tex_coords);
+                            f_color = texture(tex12, v_tex_coords);
                             break;
                         case 13u:
-                            tex = texture(tex13, v_tex_coords);
+                            f_color = texture(tex13, v_tex_coords);
                             break;
                         case 14u:
-                            tex = texture(tex14, v_tex_coords);
+                            f_color = texture(tex14, v_tex_coords);
                             break;
                         case 15u:
-                            tex = texture(tex15, v_tex_coords);
+                            f_color = texture(tex15, v_tex_coords);
                             break;
                         case 16u:
-                            tex = texture(tex16, v_tex_coords);
+                            f_color = texture(tex16, v_tex_coords);
                             break;
                         case 17u:
-                            tex = texture(tex17, v_tex_coords);
+                            f_color = texture(tex17, v_tex_coords);
                             break;
                         default: // case 18u:
-                            tex = texture(tex18, v_tex_coords);
+                            f_color = texture(tex18, v_tex_coords);
                     }
-                    f_color = (0.3 + 0.7 * lum, 1.0) * tex;
                 }
             "
         },
diff --git a/src/support/mod.rs b/src/support/mod.rs
index d3f25b9..c10bc2f 100644
--- a/src/support/mod.rs
+++ b/src/support/mod.rs
@@ -78,13 +78,12 @@ pub fn load_ground(display: &Display) -> VertexBufferAny {
     #[derive(Copy, Clone)]
     struct Vertex {
         altitude: f32,
-        normal: [f32; 3],
         index: u32,
         biome: u32,
         chunk: [u32; 2],
     }
 
-    implement_vertex!(Vertex, altitude, normal, index, biome, chunk);
+    implement_vertex!(Vertex, altitude, index, biome, chunk);
 
     let mut vertex_data: Vec<Vertex> = Vec::new();
 
@@ -152,7 +151,6 @@ pub fn load_ground(display: &Display) -> VertexBufferAny {
 
                 vertex_data.push(Vertex {
                     altitude: column,
-                    normal: [0.0, 0.0, 1.0],
                     index,
                     biome,
                     chunk,
@@ -161,7 +159,6 @@ pub fn load_ground(display: &Display) -> VertexBufferAny {
 
                 vertex_data.push(Vertex {
                     altitude: column_right,
-                    normal: [0.0, 0.0, 1.0],
                     index,
                     biome,
                     chunk,
@@ -170,7 +167,6 @@ pub fn load_ground(display: &Display) -> VertexBufferAny {
 
                 vertex_data.push(Vertex {
                     altitude: column_below,
-                    normal: [0.0, 0.0, 1.0],
                     index,
                     biome,
                     chunk,
@@ -181,7 +177,6 @@ pub fn load_ground(display: &Display) -> VertexBufferAny {
 
                 vertex_data.push(Vertex {
                     altitude: column_below,
-                    normal: [0.0, 0.0, 1.0],
                     index,
                     biome,
                     chunk,
@@ -190,7 +185,6 @@ pub fn load_ground(display: &Display) -> VertexBufferAny {
 
                 vertex_data.push(Vertex {
                     altitude: column_right,
-                    normal: [0.0, 0.0, 1.0],
                     index,
                     biome,
                     chunk,
@@ -199,7 +193,6 @@ pub fn load_ground(display: &Display) -> VertexBufferAny {
 
                 vertex_data.push(Vertex {
                     altitude: column_below_right,
-                    normal: [0.0, 0.0, 1.0],
                     index,
                     biome,
                     chunk,
@@ -209,7 +202,7 @@ pub fn load_ground(display: &Display) -> VertexBufferAny {
         }
         i += 1;
         // i == 250 thread 'main' panicked at 'called `Result::unwrap()` on an `Err` value: BufferCreationError(OutOfMemory)', src/support/mod.rs:203:10
-        if i == 175 {
+        if i == 286 {
             break;
         }
     }