Shader Flags

Shader.FLAG_NO_DEFAULT_HEADER

Suppress the automatic addition of a default header for GLSL programs.

The default header for a desktop OpenGL is:

#version 120
#define highp
#define mediump
#define lowp

And for OpenGL ES 2.0:

#version 100
#define GLES2

Shader.FLAG_FROM_CODE

The string contains Shader code rather than the filename of the shader file.