apply high precision for iOS

Author: archmoj

shaders/contour-vertex.glsl

@@ -1,4 +1,4 @@
-precision mediump float;
+precision highp float;
 
 attribute vec4 uv;
 attribute float f;

shaders/fragment.glsl

@@ -1,4 +1,4 @@
-precision mediump float;
+precision highp float;
 
 #pragma glslify: beckmann = require(glsl-specular-beckmann)
 #pragma glslify: outOfRange = require(glsl-out-of-range)

shaders/pick.glsl

@@ -1,4 +1,4 @@
-precision mediump float;
+precision highp float;
 
 #pragma glslify: outOfRange = require(glsl-out-of-range)
 

shaders/vertex.glsl

@@ -1,4 +1,4 @@
-precision mediump float;
+precision highp float;
 
 attribute vec4 uv;
 attribute vec3 f;