enable legacy gl emulation in fastcomp

emcc

@@ -1201,7 +1201,6 @@ try:
     assert shared.Settings.RESERVED_FUNCTION_POINTERS == 0, 'reserved function pointers not supported in fastcomp'
     assert shared.Settings.ASM_HEAP_LOG == 0, 'asm heap log not supported in fastcomp'
     assert shared.Settings.LABEL_DEBUG == 0, 'label debug not supported in fastcomp'
-    assert shared.Settings.LEGACY_GL_EMULATION == 0, 'legacy gl emulation not supported in fastcomp'
     assert shared.Settings.EXECUTION_TIMEOUT == -1, 'execution timeout not supported in fastcomp'
     assert shared.Settings.NAMED_GLOBALS == 0, 'named globals not supported in fastcomp'
     assert shared.Settings.PGO == 0, 'pgo not supported in fastcomp'

tests/runner.py

@@ -653,7 +653,6 @@ class BrowserCore(RunnerCore):
 
   def btest(self, filename, expected=None, reference=None, force_c=False, reference_slack=0, manual_reference=False, post_build=None,
       args=[], outfile='test.html', message='.'): # TODO: use in all other tests
-    if os.environ.get('EMCC_FAST_COMPILER') == '1' and 'LEGACY_GL_EMULATION=1' in args: return self.skip('no legacy gl emulation in fastcomp')
     # if we are provided the source and not a path, use that
     filename_is_src = '\n' in filename
     src = filename if filename_is_src else ''