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  • Hash : 32e97315
    Author : zmo@google.com
    Date : 2011-08-24T01:03:11

    Emulate certain buil-in functions to work around driver bugs.
    
    This is implemented by adding a new compile option SH_EMULATE_BUILT_IN_FUNCTIONS.  The emulated functions are names as webgl_originalName_emu so there will never be naming conflicts.
    
    At the moment only three functions are emulated: normalize, abs, sign.  Also, the compile option will emulate all three.  However, the mechanism to emulate only a selected subset is also imeplemented.  It can be turned on easily.
    
    ANGLEBUG=196
    TEST=with this option, the failed test with abs.frag passes.
    Review URL: http://codereview.appspot.com/4916043
    
    git-svn-id: https://angleproject.googlecode.com/svn/trunk@738 736b8ea6-26fd-11df-bfd4-992fa37f6226
    

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