From 66e7613e89b623e9a7b3354918090998ecaf8bfd Mon Sep 17 00:00:00 2001 From: Timothy Pearson Date: Wed, 21 Nov 2012 20:28:05 -0600 Subject: Add comment --- tdegtk/tqtcairopainter.cpp | 3 +++ 1 file changed, 3 insertions(+) (limited to 'tdegtk') diff --git a/tdegtk/tqtcairopainter.cpp b/tdegtk/tqtcairopainter.cpp index 041e076..4c64df8 100644 --- a/tdegtk/tqtcairopainter.cpp +++ b/tdegtk/tqtcairopainter.cpp @@ -159,6 +159,9 @@ void TQt3CairoPaintDevice::resetIntermediateSurface() { // Cairo however does not allow the target surface of a context to be switched, effectively preventing // direct drawing with dynamic switching to and from the intermediate surface on clip or ROP set/unset // See upstream Cairo bug report https://bugs.freedesktop.org/show_bug.cgi?id=57289 +// NOTE +// This has been worked around by applying the same transformations, saves, and restores to both the device and intermediate surface contexts +// If there is not much performance penalty from doing so, this method should probably be left alone void TQt3CairoPaintDevice::transferIntermediateSurface() { bool overlayMerge = true; cairo_surface_flush(m_intermediateSurface); -- cgit v1.2.3