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b=567272; wglMakeCurrent is expensive; r=bas

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This commit is contained in:
Vladimir Vukicevic 2010-05-20 17:20:39 -07:00
parent 14ac9d5f07
commit 525840a488
1 changed files with 11 additions and 2 deletions
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13
gfx/thebes/src/GLContextProviderWGL.cpp
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@ -207,8 +207,17 @@ public:
PRBool MakeCurrent()
{
BOOL succeeded = sWGLLibrary.fMakeCurrent(mDC, mContext);
NS_ASSERTION(succeeded, "Failed to make GL context current!");
BOOL succeeded = PR_TRUE;
// wglGetCurrentContext seems to just pull the HGLRC out
// of its TLS slot, so no need to do our own tls slot.
// You would think that wglMakeCurrent would avoid doing
// work if mContext was already current, but not so much..
if (sWGLLibrary.fGetCurrentContext() != mContext) {
succeeded = sWGLLibrary.fMakeCurrent(mDC, mContext);
NS_ASSERTION(succeeded, "Failed to make GL context current!");
}
return succeeded;
}