if(!stage->required_features.glsl_version)
stage->required_features.glsl_version = Version(1, (stage->required_features.gl_api==OPENGL_ES2 ? 0 : 10));
if(!stage->required_features.glsl_version)
stage->required_features.glsl_version = Version(1, (stage->required_features.gl_api==OPENGL_ES2 ? 0 : 10));