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don't erase background in GL canvases to reduce flicker

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@45490 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Vadim Zeitlin 2007-04-15 23:29:45 +00:00
parent dc2819335f
commit 15b239c0eb
2 changed files with 12 additions and 6 deletions
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7
include/wx/glcanvas.h
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@ -77,12 +77,7 @@ class WXDLLIMPEXP_GL wxGLCanvasBase : public wxWindow
{ {
public: public:
// default ctor doesn't initialize the window, use Create() later // default ctor doesn't initialize the window, use Create() later
wxGLCanvasBase() wxGLCanvasBase();
{
#if WXWIN_COMPATIBILITY_2_8
m_glContext = NULL;
#endif
}
virtual ~wxGLCanvasBase(); virtual ~wxGLCanvasBase();

11
src/common/glcmn.cpp
View File

@ -41,6 +41,17 @@ IMPLEMENT_CLASS(wxGLApp, wxApp)
// implementation // implementation
// ============================================================================ // ============================================================================
wxGLCanvasBase::wxGLCanvasBase()
{
#if WXWIN_COMPATIBILITY_2_8
m_glContext = NULL;
#endif
// we always paint background entirely ourselves so prevent wx from erasing
// it to avoid flicker
SetBackgroundStyle(wxBG_STYLE_CUSTOM);
}
void wxGLCanvasBase::SetCurrent(const wxGLContext& context) const void wxGLCanvasBase::SetCurrent(const wxGLContext& context) const
{ {
// although on MSW it works even if the window is still hidden, it doesn't // although on MSW it works even if the window is still hidden, it doesn't