`trim` shader's source when check precision (#4510)
Some users like add `one blank line` before & after the source code.
if no trim , `substring(0, 9)` can't work correct.
1 parent bb09bbb commit fb5f40bfd0a1070dda15380a6c2153fd599954d2
@finscn finscn authored on 3 Dec 2017
Matt Karl committed on 3 Dec 2017
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src/core/Shader.js