precision mediummp float

libcygnet/src/shaders.cc

 namespace Cygnet::Shaders {
 
 const char *chunkVx = R"glsl(
+	precision mediump float;
 	uniform mat3 camera;
 	uniform vec2 pos;
 	attribute vec2 vertex;
 )glsl";
 
 const char *spriteVx = R"glsl(
+	precision mediump float;
 	#define TILE_SIZE 32.0
 
 	uniform mat3 camera;
 )glsl";
 
 const char *rectVx = R"glsl(
+	precision mediump float;
 	uniform mat3 camera;
 	uniform vec2 pos;
 	uniform vec2 size;