h i g h precision shaders

(I shouldn't need to do this)

core/assets/shaders/fog.frag

@@ -1,3 +1,4 @@
+#define HIGHP
 
 uniform sampler2D u_texture;
 

core/assets/shaders/slag.frag

@@ -1,3 +1,5 @@
+#define HIGHP
+
 //shades of slag
 #define S2 vec3(100.0, 93.0, 49.0) / 100.0
 #define S1 vec3(100.0, 60.0, 25.0) / 100.0

core/assets/shaders/tar.frag

@@ -1,3 +1,5 @@
+#define HIGHP
+
 #define NSCALE 180.0 / 2.0
 
 uniform sampler2D u_texture;