diff --git a/res/shaders/background.glslf b/res/shaders/background.glslf
index 466372c9..f7ff07c8 100644
--- a/res/shaders/background.glslf
+++ b/res/shaders/background.glslf
@@ -4,6 +4,6 @@ out vec4 f_color;
 uniform samplerCube u_cubemap;
 
 void main(){
-	vec3 dir = normalize(v_coord);
-	f_color = texture(u_cubemap, dir);
+    vec3 dir = normalize(v_coord);
+    f_color = texture(u_cubemap, dir);
 }
diff --git a/res/shaders/background.glslv b/res/shaders/background.glslv
index 1370e400..4de0d5b8 100644
--- a/res/shaders/background.glslv
+++ b/res/shaders/background.glslv
@@ -7,6 +7,6 @@ uniform float u_ar;
 uniform float u_zoom;
 
 void main(){
-	v_coord = (vec4(v_position*vec2(u_ar, 1.0f)*u_zoom, -1.0, 1.0) * u_view).xyz;
-	gl_Position = vec4(v_position, 0.0, 1.0);
+    v_coord = (vec4(v_position*vec2(u_ar, 1.0f)*u_zoom, -1.0, 1.0) * u_view).xyz;
+    gl_Position = vec4(v_position, 0.0, 1.0);
 }
diff --git a/res/shaders/lib/commons.glsl b/res/shaders/lib/commons.glsl
index f2f1b3bc..0a694422 100644
--- a/res/shaders/lib/commons.glsl
+++ b/res/shaders/lib/commons.glsl
@@ -1,12 +1,27 @@
+#ifndef COMMONS_GLSL_
+#define COMMONS_GLSL_
+
+#include <constants>
+
 #define PI 3.1415926535897932384626433832795
 #define PI2 (PI*2)
 
 vec4 decompress_light(float compressed_light) {
-	vec4 result;
+    vec4 result;
     int compressed = floatBitsToInt(compressed_light);
     result.r = ((compressed >> 24) & 0xFF) / 255.f;
     result.g = ((compressed >> 16) & 0xFF) / 255.f;
     result.b = ((compressed >> 8) & 0xFF) / 255.f;
     result.a = (compressed & 0xFF) / 255.f;
-	return result;
+    return result;
 }
+
+vec3 pick_sky_color(samplerCube cubemap) {
+    vec3 skyLightColor = texture(cubemap, vec3(0.4f, 0.0f, 0.4f)).rgb;
+    skyLightColor *= SKY_LIGHT_TINT;
+    skyLightColor = min(vec3(1.0), skyLightColor*SKY_LIGHT_MUL);
+    skyLightColor = max(MAX_SKY_LIGHT, skyLightColor);
+    return skyLightColor;
+}
+
+#endif // COMMONS_GLSL_
diff --git a/res/shaders/lib/constants.glsl b/res/shaders/lib/constants.glsl
new file mode 100644
index 00000000..161a505b
--- /dev/null
+++ b/res/shaders/lib/constants.glsl
@@ -0,0 +1,15 @@
+#ifndef CONSTANTS_GLSL_
+#define CONSTANTS_GLSL_
+
+// geometry
+#define CURVATURE_FACTOR 0.002
+
+// lighting
+#define SKY_LIGHT_MUL 2.5
+#define SKY_LIGHT_TINT vec3(0.9, 0.8, 1.0)
+#define MAX_SKY_LIGHT vec3(0.1, 0.11, 0.14)
+
+// fog
+#define FOG_POS_SCALE vec3(1.0, 0.2, 1.0)
+
+#endif // CONSTANTS_GLSL_
diff --git a/res/shaders/lines.glslf b/res/shaders/lines.glslf
index e5e415e8..61258235 100644
--- a/res/shaders/lines.glslf
+++ b/res/shaders/lines.glslf
@@ -2,5 +2,5 @@ in vec4 v_color;
 out vec4 f_color;
 
 void main(){
-	f_color = v_color;
+    f_color = v_color;
 }
diff --git a/res/shaders/lines.glslv b/res/shaders/lines.glslv
index 649f3f87..3fcd2fe4 100644
--- a/res/shaders/lines.glslv
+++ b/res/shaders/lines.glslv
@@ -6,6 +6,6 @@ out vec4 v_color;
 uniform mat4 u_projview;
 
 void main(){
-	v_color = a_color;
-	gl_Position = u_projview * vec4(a_position, 1.0);
+    v_color = a_color;
+    gl_Position = u_projview * vec4(a_position, 1.0);
 }
diff --git a/res/shaders/main.glslf b/res/shaders/main.glslf
index 97e49cfb..071c56b3 100644
--- a/res/shaders/main.glslf
+++ b/res/shaders/main.glslf
@@ -11,13 +11,14 @@ uniform float u_fogFactor;
 uniform float u_fogCurve;
 
 void main(){
-	vec3 fogColor = texture(u_cubemap, a_dir).rgb;
-	vec4 tex_color = texture(u_texture0, a_texCoord);
-	float depth = (a_distance/256.0);
-	float alpha = a_color.a * tex_color.a;
-	// anyway it's any alpha-test alternative required
-	if (alpha < 0.3f)
-		discard;
-	f_color = mix(a_color * tex_color, vec4(fogColor,1.0), min(1.0, pow(depth*u_fogFactor, u_fogCurve)));
-	f_color.a = alpha;
+    vec3 fogColor = texture(u_cubemap, a_dir).rgb;
+    vec4 tex_color = texture(u_texture0, a_texCoord);
+    float depth = (a_distance/256.0);
+    float alpha = a_color.a * tex_color.a;
+    // anyway it's any alpha-test alternative required
+    if (alpha < 0.3f)
+        discard;
+    f_color = mix(a_color * tex_color, vec4(fogColor,1.0), 
+              min(1.0, pow(depth*u_fogFactor, u_fogCurve)));
+    f_color.a = alpha;
 }
diff --git a/res/shaders/main.glslv b/res/shaders/main.glslv
index e59839a0..90b0d82f 100644
--- a/res/shaders/main.glslv
+++ b/res/shaders/main.glslv
@@ -20,29 +20,22 @@ uniform samplerCube u_cubemap;
 uniform vec3 u_torchlightColor;
 uniform float u_torchlightDistance;
 
-#define SKY_LIGHT_MUL 2.5
-
-
 void main(){
-    vec3 pos3d = (u_model * vec4(v_position, 1.0)).xyz-u_cameraPos.xyz;
-	vec4 modelpos = u_model * vec4(v_position, 1.0);
-    modelpos.y -= pow(length(pos3d.xz)*0.002, 3.0);
-	vec4 viewmodelpos = u_view * modelpos;
-	vec4 decomp_light = decompress_light(v_light);
-	vec3 light = decomp_light.rgb;
-	float torchlight = max(0.0, 1.0-distance(u_cameraPos, modelpos.xyz)/u_torchlightDistance);
-	a_dir = modelpos.xyz - u_cameraPos;
-	light += torchlight * u_torchlightColor;
-	a_color = vec4(pow(light, vec3(u_gamma)),1.0f);
-	a_texCoord = v_texCoord;
+    vec4 modelpos = u_model * vec4(v_position, 1.0);
+    vec3 pos3d = modelpos.xyz-u_cameraPos.xyz;
+    modelpos.y -= pow(length(pos3d.xz)*CURVATURE_FACTOR, 3.0);
+    vec4 viewmodelpos = u_view * modelpos;
+    vec4 decomp_light = decompress_light(v_light);
+    
+    vec3 light = decomp_light.rgb;
+    float torchlight = max(0.0, 1.0-distance(u_cameraPos, modelpos.xyz)/u_torchlightDistance);
+    light += torchlight * u_torchlightColor;
+    a_color = vec4(pow(light, vec3(u_gamma)),1.0f);
+    a_texCoord = v_texCoord;
 
-	vec3 skyLightColor = texture(u_cubemap, vec3(0.4f, 0.0f, 0.4f)).rgb;
-	skyLightColor.g *= 0.9;
-	skyLightColor.b *= 0.8;
-	skyLightColor = min(vec3(1.0), skyLightColor*SKY_LIGHT_MUL);
-    skyLightColor = max(vec3(0.1, 0.11, 0.14), skyLightColor);
-	
-	a_color.rgb = max(a_color.rgb, skyLightColor.rgb*decomp_light.a);
-	a_distance = length(u_view * u_model * vec4(pos3d.x, pos3d.y*0.2, pos3d.z, 0.0));
-	gl_Position = u_proj * viewmodelpos;
+    a_dir = modelpos.xyz - u_cameraPos;
+    vec3 skyLightColor = pick_sky_color(u_cubemap);
+    a_color.rgb = max(a_color.rgb, skyLightColor.rgb*decomp_light.a);
+    a_distance = length(u_view * u_model * vec4(pos3d * FOG_POS_SCALE, 0.0));
+    gl_Position = u_proj * viewmodelpos;
 }
diff --git a/res/shaders/screen.glslf b/res/shaders/screen.glslf
index 00041cbc..e7523d10 100644
--- a/res/shaders/screen.glslf
+++ b/res/shaders/screen.glslf
@@ -19,7 +19,7 @@ vec4 apply_vignette(vec4 color) {
 }
 
 void main() {
-	f_color = texture(u_texture0, v_coord);
-	f_color = apply_vignette(f_color);
+    f_color = texture(u_texture0, v_coord);
+    f_color = apply_vignette(f_color);
 }
 
diff --git a/res/shaders/screen.glslv b/res/shaders/screen.glslv
index b319c53f..593e5f19 100644
--- a/res/shaders/screen.glslv
+++ b/res/shaders/screen.glslv
@@ -7,7 +7,7 @@ uniform float u_timer;
 uniform float u_dayTime;
 
 void main(){
-	v_coord = v_position * 0.5 + 0.5;
-	gl_Position = vec4(v_position, 0.0, 1.0);
+    v_coord = v_position * 0.5 + 0.5;
+    gl_Position = vec4(v_position, 0.0, 1.0);
 }
 
diff --git a/res/shaders/skybox_gen.glslf b/res/shaders/skybox_gen.glslf
index 27c8f567..b63ae0ee 100644
--- a/res/shaders/skybox_gen.glslf
+++ b/res/shaders/skybox_gen.glslf
@@ -43,7 +43,7 @@ SOFTWARE.
 #define LIGHT_STEPS 4
 
 vec3 calculate_scattering(
-	vec3 start, 				// the start of the ray (the camera position)
+    vec3 start, 				// the start of the ray (the camera position)
     vec3 dir, 					// the direction of the ray (the camera vector)
     float max_dist, 			// the maximum distance the ray can travel (because something is in the way, like an object)
     vec3 scene_color,			// the color of the scene
@@ -201,16 +201,16 @@ vec3 calculate_scattering(
 
         // and increment the position on this ray
         ray_pos_i += step_size_i;
-    	
+        
     }
     
     // calculate how much light can pass through the atmosphere
     vec3 opacity = exp(-(beta_mie * opt_i.y + beta_ray * opt_i.x + beta_absorption * opt_i.z));
     
-	// calculate and return the final color
+    // calculate and return the final color
     return (
-        	phase_ray * beta_ray * total_ray // rayleigh color
-       		+ phase_mie * beta_mie * total_mie // mie
+            phase_ray * beta_ray * total_ray // rayleigh color
+               + phase_mie * beta_mie * total_mie // mie
             + opt_i.x * beta_ambient // and ambient
     ) * light_intensity + scene_color * opacity; // now make sure the background is rendered correctly
 }
@@ -264,7 +264,7 @@ void main() {
     vec3 col = vec3(0.0);//scene.xyz;
     // get the atmosphere color
     col += calculate_scattering(
-    	camera_position,				// the position of the camera
+        camera_position,				// the position of the camera
         camera_vector, 					// the camera vector (ray direction of this pixel)
         1e12f, 						    // max dist, essentially the scene depth
         vec3(0.0f),						// scene color, the color of the current pixel being rendered
diff --git a/res/shaders/skybox_gen.glslv b/res/shaders/skybox_gen.glslv
index fdd0667c..bd6981ce 100644
--- a/res/shaders/skybox_gen.glslv
+++ b/res/shaders/skybox_gen.glslv
@@ -3,6 +3,6 @@ layout (location = 0) in vec2 v_position;
 out vec2 v_coord;
 
 void main(){
-	v_coord = v_position;
-	gl_Position = vec4(v_position, 0.0, 1.0);
+    v_coord = v_position;
+    gl_Position = vec4(v_position, 0.0, 1.0);
 }
diff --git a/res/shaders/ui.glslf b/res/shaders/ui.glslf
index 2e189a81..4d040068 100644
--- a/res/shaders/ui.glslf
+++ b/res/shaders/ui.glslf
@@ -5,5 +5,5 @@ out vec4 f_color;
 uniform sampler2D u_texture;
 
 void main(){
-	f_color = a_color * texture(u_texture, a_textureCoord);
+    f_color = a_color * texture(u_texture, a_textureCoord);
 }
diff --git a/res/shaders/ui.glslv b/res/shaders/ui.glslv
index d567e05d..eace7d38 100644
--- a/res/shaders/ui.glslv
+++ b/res/shaders/ui.glslv
@@ -8,7 +8,7 @@ out vec4 a_color;
 uniform mat4 u_projview;
 
 void main(){
-	a_textureCoord = v_textureCoord;
-	a_color = v_color;
-	gl_Position = u_projview * vec4(v_position, 0.5, 1.0);
+    a_textureCoord = v_textureCoord;
+    a_color = v_color;
+    gl_Position = u_projview * vec4(v_position, 0.5, 1.0);
 }
diff --git a/res/shaders/ui3d.glslf b/res/shaders/ui3d.glslf
index 5b2fc4fd..550a5e94 100644
--- a/res/shaders/ui3d.glslf
+++ b/res/shaders/ui3d.glslf
@@ -5,6 +5,6 @@ out vec4 f_color;
 uniform sampler2D u_texture;
 
 void main(){
-	f_color = a_color * texture(u_texture, a_textureCoord);
+    f_color = a_color * texture(u_texture, a_textureCoord);
     if (f_color.a == 0.0) discard;
 }
diff --git a/res/shaders/ui3d.glslv b/res/shaders/ui3d.glslv
index 65ccf0df..e9541419 100644
--- a/res/shaders/ui3d.glslv
+++ b/res/shaders/ui3d.glslv
@@ -9,7 +9,7 @@ uniform mat4 u_projview;
 uniform mat4 u_apply;
 
 void main(){
-	a_textureCoord = v_textureCoord;
-	a_color = v_color;
-	gl_Position = u_apply * u_projview * vec4(v_position, 1.0);
+    a_textureCoord = v_textureCoord;
+    a_color = v_color;
+    gl_Position = u_apply * u_projview * vec4(v_position, 1.0);
 }