I didn't dig the TGSI code, but it seems the only difference is that
before: input_semantic_name = "\000\001", '\000' <repeats 13 times>,
after: input_semantic_name = "\000' <repeats 15 times>,
and in tgsi_scan_shader, this value is set as SemanticName which is zero
already. please take a look at line 133:
info->input_semantic_name[reg] = (ubyte)fulldecl->Semantic.SemanticName;
Cooper
On Mon, Sep 28, 2009 at 6:01 PM, Keith Whitwell <kei...@vmware.com> wrote:
> On Mon, 2009-09-28 at 02:56 -0700, Cooper Yuan wrote:
> > Module: Mesa
> > Branch: master
> > Commit: 99e1745af9a6a1fe1ebc65b17afb5f1a975348d2
> > URL:
> http://cgit.freedesktop.org/mesa/mesa/commit/?id=99e1745af9a6a1fe1ebc65b17afb5f1a975348d2
> >
> > Author: Cooper Yuan <coopery...@gmail.com>
> > Date: Mon Sep 28 17:55:38 2009 +0800
> >
> > r300g: fix r300g cause GPU hang issue.
> >
> > why there are two input position semantic tags is that ureg doesn't
> > set vs input semantic due to commit: 6d8dbd3d1ec888
> >
> > so use vs input index instead of semantic name.
> >
>
> Note that the previous code before ureg didn't put semantics in VS
> inputs either, so there was only a short window where this was
> happening.
>
> Keith
>
>
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