forked from bartvdbraak/blender
Fix for bad imbuf creation by compositor viewers if resolution is (0,0).
This can happen if no image buffers are used to define a sensible resolution. Then the viewer will stiff create a float buffer in the output imbuf, which defies the usual ibuf->rect_float check and leads to invalid memory access. Float buffer should not be created in this case.
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@ -143,7 +143,9 @@ void ViewerOperation::initImage()
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IMB_freezbuffloatImBuf(ibuf);
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ibuf->x = getWidth();
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ibuf->y = getHeight();
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imb_addrectfloatImBuf(ibuf);
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/* zero size can happen if no image buffers exist to define a sensible resolution */
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if (ibuf->x > 0 && ibuf->y > 0)
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imb_addrectfloatImBuf(ibuf);
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ima->ok = IMA_OK_LOADED;
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ibuf->userflags |= IB_DISPLAY_BUFFER_INVALID;
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