Shaders: better preprocessor code formatting.

src/Shaders/compatibility.glsl

@@ -23,38 +23,36 @@
 */
 
 #if (!defined(GL_ES) && __VERSION__ >= 130) || (defined(GL_ES) && __VERSION__ >= 300)
-#define NEW_GLSL
+    #define NEW_GLSL
 #endif
 
 /* On NVidia and GLSL 1.20 layout qualifiers result in parsing error, even if
    the extension is defined as supported */
 #if !defined(GL_ES) && __VERSION__ >= 130
-
+    #ifdef GL_ARB_explicit_attrib_location
-#ifdef GL_ARB_explicit_attrib_location
         #extension GL_ARB_explicit_attrib_location: enable
         #define EXPLICIT_ATTRIB_LOCATION
-#endif
+    #endif
-#if defined(GL_ARB_shading_language_420pack)
+    #if defined(GL_ARB_shading_language_420pack)
         #extension GL_ARB_shading_language_420pack: enable
         #define EXPLICIT_TEXTURE_LAYER
         #define RUNTIME_CONST
-#endif
+    #endif
-#ifdef GL_ARB_explicit_uniform_location
+    #ifdef GL_ARB_explicit_uniform_location
         #extension GL_ARB_explicit_uniform_location: enable
         #define EXPLICIT_UNIFORM_LOCATION
-#endif
+    #endif
-
 #endif
 
 #if defined(GL_ES) && __VERSION__ >= 300
-#define EXPLICIT_ATTRIB_LOCATION
+    #define EXPLICIT_ATTRIB_LOCATION
-/* EXPLICIT_TEXTURE_LAYER, EXPLICIT_UNIFORM_LOCATION and RUNTIME_CONST is not
+    /* EXPLICIT_TEXTURE_LAYER, EXPLICIT_UNIFORM_LOCATION and RUNTIME_CONST is not
        available in OpenGL ES */
 #endif
 
 /* Precision qualifiers are not supported in GLSL 1.20 */
 #if !defined(GL_ES) && __VERSION__ == 120
-#define highp
+    #define highp
-#define mediump
+    #define mediump
-#define lowp
+    #define lowp
 #endif