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[core,update] reset invalid regions at BeginPaint

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The client must handle graphics updates in EndPaint.
If we already reached BeginPaint again reset the invalidated regions
as they are already processed and start anew. Fixes #9672
This commit is contained in:
Armin Novak 2023-12-19 15:29:27 +01:00 committed by akallabeth
parent 65da185275
commit b02d4a81b5
1 changed files with 16 additions and 0 deletions
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16
libfreerdp/core/update.c
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@ -3293,9 +3293,25 @@ BOOL update_begin_paint(rdpUpdate* update)
WINPR_ASSERT(update);
rdp_update_lock(update);
WINPR_ASSERT(update->context);
/* Reset the invalid regions, we start a new frame here. */
rdpGdi* gdi = update->context->gdi;
WINPR_ASSERT(gdi);
if (gdi->hdc && gdi->primary && gdi->primary->hdc)
{
HGDI_WND hwnd = gdi->primary->hdc->hwnd;
WINPR_ASSERT(hwnd);
WINPR_ASSERT(hwnd->invalid);
hwnd->invalid->null = TRUE;
hwnd->ninvalid = 0;
}
BOOL rc = IFCALLRESULT(TRUE, update->BeginPaint, update->context);
if (!rc)
WLog_WARN(TAG, "BeginPaint call failed");
return rc;
}