test_glsl_validation.nit:24,0: Shader error on 'binding' : not supported for this version or the enabled extensions 
test_glsl_validation.nit:24,0: Shader error on 'binding' : requires uniform or buffer storage qualifier 
test_glsl_validation.nit:24,0: Shader error on 'binding' : requires block, or sampler/image, or atomic-counter type 
test_glsl_validation.nit:28,0: Shader error on 'gl_FragColor' : undeclared identifier 
test_glsl_validation.nit:28,0: Shader error on 'assign' :  cannot convert from 'mediump 4-component vector of float' to 'float'
test_glsl_validation.nit:29,0: Shader error on 'b' : undeclared identifier