(17): ERROR: '~' :  not supported  
(20): ERROR: '<<=' :  not supported  
(21): ERROR: '<<=' :  not supported  
(23): ERROR: '%=' :  not supported  
(24): ERROR: '&=' :  not supported  
(25): ERROR: '^=' :  not supported  
(26): ERROR: '|=' :  not supported  
(29): ERROR: '~' :  not supported  
(30): ERROR: '<<' :  wrong operand types  no operation '<<' exists that takes a left-hand operand of type 'vec4' and a right operand of type 'const int' (or there is no acceptable conversion)
(31): ERROR: '>>' :  wrong operand types  no operation '>>' exists that takes a left-hand operand of type 'vec4' and a right operand of type 'const int' (or there is no acceptable conversion)
(32): ERROR: '<<=' :  not supported  
(32): ERROR: 'assign' :  cannot convert from 'const int' to 'vec4'
(33): ERROR: '<<=' :  not supported  
(33): ERROR: 'assign' :  cannot convert from 'const int' to 'vec4'
(35): ERROR: '%=' :  not supported  
(36): ERROR: '&=' :  not supported  
(36): ERROR: 'assign' :  cannot convert from 'const int' to 'vec4'
(37): ERROR: '^=' :  not supported  
(37): ERROR: 'assign' :  cannot convert from 'const int' to 'vec4'
(38): ERROR: '|=' :  not supported  
(38): ERROR: 'assign' :  cannot convert from 'const int' to 'vec4'
(41): ERROR: '!' :  wrong operand type no operation '!' exists that takes an operand of type uniform vec4 (or there is no acceptable conversion)