150.frag
Warning, version 150 is not yet complete; some version-specific features are present, but many are missing.
ERROR: 0:4: 'redeclaration' : cannot redeclare with different qualification: gl_FragCoord
ERROR: 0:5: 'redeclaration' : cannot redeclare with different qualification: gl_FragCoord
ERROR: 0:6: 'layout qualifier' : can only apply origin_upper_left and pixel_center_origin to gl_FragCoord 
ERROR: 0:14: 'gl_FragCoord' : cannot redeclare after use 
ERROR: 4 compilation errors.  No code generated.


gl_FragCoord pixel center is integer
gl_FragCoord origin is upper left
ERROR: node is still EOpNull!
0:9  Function Definition: main( (void)
0:9    Function Parameters: 
0:11    Sequence
0:11      Sequence
0:11        move second child to first child (4-component vector of float)
0:11          'c' (4-component vector of float)
0:11          'gl_FragCoord' (gl_FragCoord 4-component vector of float)
0:?   Linker Objects
0:?     'gl_FragCoord' (gl_FragCoord 4-component vector of float)
0:?     'gl_FragCoord' (gl_FragCoord 4-component vector of float)
0:?     'foo' (smooth in 4-component vector of float)


Linked fragment stage: