check drawable is available
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@ -69,10 +69,13 @@ xglComposite (CARD8 op,
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pPictureScreen = GetPictureScreen (pScreen);
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if (!xglSyncBits (pSrc->pDrawable, NullBox))
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FatalError (XGL_SW_FAILURE_STRING);
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if (pSrc->pDrawable)
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{
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if (!xglSyncBits (pSrc->pDrawable, NullBox))
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FatalError (XGL_SW_FAILURE_STRING);
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}
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if (pMask)
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if (pMask && pMask->pDrawable)
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{
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if (!xglSyncBits (pMask->pDrawable, NullBox))
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FatalError (XGL_SW_FAILURE_STRING);
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