CODEWITHSUNDEEP
macosopenglglsl
TheAmateurProgrammer
TheAmateurProgrammer

Reputation: 9392

GLSL "out" 4.2 to 1.2

I'm trying port a GLSL 4.2 to 1.2 (Because I'm using a mac), however, I'm not sure how I can convert an out parameter to 1.2 (as it generates an error).

out vec3 vNormal;
out vec2 texcoord; 
out vec3 vPosition;

The compiler error is as following.


Invalid qualifiers 'out' in global variable context
ERROR: 0:13: Invalid qualifiers 'out' in global variable context
ERROR: 0:14: Invalid qualifiers 'out' in global variable context
ERROR: 0:19: Use of undeclared identifier 'texcoord'
ERROR: 0:20: Use of undeclared identifier 'vNormal'
ERROR: 0:21: Use of undeclared identifier 'vPosition'

Upvotes: 1

Views: 2642

Answers (1)

Nicol Bolas
Nicol Bolas

Reputation: 473437

The GLSL 1.30 and above out qualifier represents a shader stage output. What that means for 1.20 and below depends on which shader stage you're talking about.

Since you're using identifiers like texcoord and vNormal, I'm guessing that you are writing a vertex shader. Then the keyword you should use is varying. Your fragment shader inputs that correspond to these should also be varying too.

Upvotes: 6

Related Questions