300block.frag
ERROR: 0:10: '' : cannot nest a structure definition inside a structure or block 
ERROR: 0:21: '' : cannot nest a structure definition inside a structure or block 
ERROR: 0:20: 'sampler' : member of block cannot be a sampler type 
ERROR: 0:45: 'variable indexing block array' : not supported with this profile: es
ERROR: 4 compilation errors.  No code generated.


ERROR: node is still EOpNull!
0:42  Function Definition: main( (void)
0:42    Function Parameters: 
0:44    Sequence
0:44      Function Call: texture(is31;vf3; (mediump 4-component vector of int)
0:44        sampler: direct index for structure (lowp isampler3D)
0:44          's' (uniform structure{u,v,sampler,w,t})
0:44          Constant:
0:44            2 (const int)
0:44        Construct vec3 (3-component vector of float)
0:44          Convert int to float (float)
0:44            ni: direct index for structure (layout(column_major shared ) mediump int)
0:44              'inst' (layout(column_major shared ) uniform block{nbv,ni})
0:44              Constant:
0:44                1 (const int)
0:44          Convert uint to float (float)
0:44            direct index (mediump uint)
0:44              bv: direct index for structure (layout(column_major shared ) mediump 4-component vector of uint)
0:44                '__anon__0' (layout(column_major shared ) uniform block{bv,bm2,sampler,t,fbs})
0:44                Constant:
0:44                  0 (const uint)
0:44              Constant:
0:44                1 (const int)
0:44          Convert uint to float (float)
0:44            direct index (mediump uint)
0:44              nbv: direct index for structure (layout(column_major shared ) mediump 4-component vector of uint)
0:44                direct index (layout(column_major shared ) block{nbv,ni})
0:44                  'insts' (layout(column_major shared ) uniform 4-element array of block{nbv,ni})
0:44                  Constant:
0:44                    2 (const int)
0:44                Constant:
0:44                  0 (const int)
0:44              Constant:
0:44                2 (const int)
0:45      indirect index (layout(column_major shared ) block{nbv,ni})
0:45        'insts' (layout(column_major shared ) uniform 4-element array of block{nbv,ni})
0:45        direct index (mediump uint)
0:45          v: direct index for structure (mediump 4-component vector of uint)
0:45            's' (uniform structure{u,v,sampler,w,t})
0:45            Constant:
0:45              1 (const int)
0:45          Constant:
0:45            0 (const int)
0:?   Linker Objects
0:?     's' (uniform structure{u,v,sampler,w,t})
0:?     '__anon__0' (layout(column_major shared ) uniform block{bv,bm2,sampler,t,fbs})
0:?     'inst' (layout(column_major shared ) uniform block{nbv,ni})
0:?     'insts' (layout(column_major shared ) uniform 4-element array of block{nbv,ni})
0:?     '__anon__1' (layout(column_major shared ) uniform block{f,u})


Linked fragment stage: