Frederic,
I think you can't limit the OpenGL drawing to a limited region of a window
HANDLE. You could embed a window in the region you want to use OGL, and just
draw to it. Or you could first draw the OGL/OSG code, and then get the window
handle and draw all your other stuff using GDI or
This might be want you are looking for:
http://factor-language.blogspot.com/2007_08_01_archive.html
and
http://factor-language.blogspot.com/2007/08/opengl-redraw-bug-on-windows.html
Basically enable the scissor test, then tell OpenGl what part of the
window to update when calling SwapBuffers.
HI Simon,
I'm afraid the OSG already uses the sissor test to make sure that the
viewport clear only affects the region of interest. It work, but the
problem Fredric has really all about the fact that the OpenGL context
affects the whole window it's assigned to.
Robert.
On Thu, Mar 26, 2009 at
Yes I know.
The magic is in the use of glAddSwapHintRectWIN which is a wgl function.
I've just tested this and it works, so you can update part of the window using
plain GDI calls and do the rest with opengl.
Mind you I wouldn't trust it work on all machines.
It's probably less of head ache to
hello world,
on a win32 project, I would like to display an osg Viewer in a part of
the window.
I set my osg::GraphicsContext::Traits with coords I want, set the
inheritedWindowData with osgViewer::GraphicsWindowWin32::WindowData(
hwnd )
my model is well placed and displayed (in the area I
Hi Fred,
Just set the Camera's viewport so it only covers the part you want to render
to.
Robert.
On Wed, Mar 25, 2009 at 2:06 PM, Frederic Marmond fmarm...@gmail.comwrote:
hello world,
on a win32 project, I would like to display an osg Viewer in a part of
the window.
I set my
thanks Robert,
I already did it (here is my test code):
RECT rect;
GetWindowRect(hwnd,rect);
// Set window traits and gc
m_Traits = new osg::GraphicsContext::Traits;
osg::ref_ptrosg::Referenced windata = new
osgViewer::GraphicsWindowWin32::WindowData( hwnd
Hi Fred,
Ahh you're code tells the story... You are enabling the graphics window
clear by the line:
gc-setClearMask( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
Just leave this in it's default value of 0 and it won't clear, the only
clear that will happen is the camera's viewport clear.
hum, it didn't work :(
both
// gc-setClearColor( osg::Vec4f(1.2f, 0.2f, 0.6f, 1.0f) );
// gc-setClearMask( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
and
gc-setClearColor( osg::Vec4f(1.2f, 0.2f, 0.6f, 1.0f) );
gc-setClearMask( 0 );
do the same: instead of the shiny
hum, the (black) color was not the problem in itself :)
If I do this (update from my whole code):
gc-setClearColor( osg::Vec4f(1.2f, 0.2f, 0.6f, 1.0f) );
gc-setClearMask( 0) ;
camera-setClearColor( osg::Vec4f(0.2f, 0.2f, 1.6f, 1.0f) );
camera-setClearMask(
On Wed, Mar 25, 2009 at 3:03 PM, Frederic Marmond fmarm...@gmail.comwrote:
hum, it didn't work :(
both
// gc-setClearColor( osg::Vec4f(1.2f, 0.2f, 0.6f, 1.0f) );
// gc-setClearMask( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
and
gc-setClearColor( osg::Vec4f(1.2f, 0.2f,
Hi Fred,
Perhaps you are expecting too much from a graphics context. Is that you
just want the graphics context to cover a small part of your window and want
conventional 2D GUI in the rest of the window? I don't believe this is
possible without creating a subwindow just for the graphics
ha, thanks Robert, you've got it ! :)
So I stop investigate in the OSG part, and will concentrate on windows
API side...
cheers!
Fred
2009/3/25 Robert Osfield robert.osfi...@gmail.com:
Hi Fred,
Perhaps you are expecting too much from a graphics context. Is that you
just want the graphics
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