I/trace   ( 5522): Shader.hx:397:    i / shader / failed to create shader : default_shader_bitmapfont
I/trace   ( 5522):
I/trace   ( 5522):
I/trace   ( 5522):      Failed to compile shader (fragment(default bitmapfont shader)) :
I/trace   ( 5522):              (3) : warning C7572: OpenGL requires extension names to begin with 'GL_'
I/trace   ( 5522): (28) : error C1101: ambiguous overloaded function reference "smoothstep(mediump float, mediump float, lowp float)"
I/trace   ( 5522):     (0) : ps gp4 cp50 fp50 vp50 gp50 lowp float smoothstep(lowp float, lowp float, lowp float)
I/trace   ( 5522):     (0) : ps gp4 cp50 fp50 vp50 gp50 mediump vec4 smoothstep(mediump float, mediump float, mediump vec4)
I/trace   ( 5522):     (0) : ps gp4 cp50 fp50 vp50 gp50 mediump vec3 smoothstep(mediump float, mediump float, mediump vec3)
I/trace   ( 5522):     (0) : ps gp4 cp50 fp50 vp50 gp50 mediump vec2 smoothstep(mediump float, mediump float, mediump vec2)
I/trace   ( 5522):     (0) : ps gp4 cp50 fp50 vp50 gp50 mediump vec1 smoothstep(mediump float, mediump float, mediump vec1)
I/trace   ( 5522):     (0) : ps gp4 cp50 fp50 vp50 gp50 mediump float smoothstep(mediump float, mediump float, mediump float)
E/Exception( 5522): :( shader errors