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st/wgl: fix WGL_SWAP_METHOD_ARB query

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There are three possible return values (not two): WGL_SWAP_COPY_ARB,
WGL_SWAP_EXCHANGE_EXT and WGL_SWAP_UNDEFINED_ARB.

VMware bug 1431184

Reviewed-by: Jose Fonseca <jfonseca@vmware.com>
Reviewed-by: Charmaine Lee <charmainel@vmware.com>
This commit is contained in:
Brian Paul 2015-06-16 15:32:46 -06:00
parent 73bdf4ba86
commit 4c11008eba
1 changed files with 6 additions and 1 deletions
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7
src/gallium/state_trackers/wgl/stw_ext_pixelformat.c
View file

@ -88,7 +88,12 @@ stw_query_attrib(
return TRUE;
case WGL_SWAP_METHOD_ARB:
*pvalue = pfi->pfd.dwFlags & PFD_SWAP_COPY ? WGL_SWAP_COPY_ARB : WGL_SWAP_UNDEFINED_ARB;
if (pfi->pfd.dwFlags & PFD_SWAP_COPY)
*pvalue = WGL_SWAP_COPY_ARB;
else if (pfi->pfd.dwFlags & PFD_SWAP_EXCHANGE)
*pvalue = WGL_SWAP_EXCHANGE_EXT;
else
*pvalue = WGL_SWAP_UNDEFINED_ARB;
return TRUE;
case WGL_SWAP_LAYER_BUFFERS_ARB: