OpenGL and QtAda 3.1
in [ADA]
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From: Alexis on 13 Jan 2010 15:40 Hello, I'm interested in using OpenGL with QtAda on Windows and GNAT 2009. So far I have managed to subclass a Q_GL_Widget, but OpenGL support seems to be lacking, thus I cannot call any glXXX functions like glClearColor. In the past I have managed to use OpenGL with Ada using the Win32 bindings in Win32Ada, but I'd like to do it in a "proper" and portable way for Qt. From checking the MSVC version it seems that Qt in Windows falls back to whatever native OpenGL implementation it can find on the machine. I guess this is what we should do in QtAda? Or is it just that I've missed something on the way? Many thanks and best regards, Alexis.
From: Vadim Godunko on 14 Jan 2010 04:00 On Jan 13, 9:40 pm, Alexis <jose_alexis_paez_thurg...(a)hotmail.com> wrote: > > I'm interested in using OpenGL with QtAda on Windows and GNAT 2009. So > far I have managed to subclass a Q_GL_Widget, but OpenGL support seems > to be lacking, thus I cannot call any glXXX functions like > glClearColor. > > In the past I have managed to use OpenGL with Ada using the Win32 > bindings in Win32Ada, but I'd like to do it in a "proper" and portable > way for Qt. From checking the MSVC version it seems that Qt in Windows > falls back to whatever native OpenGL implementation it can find on the > machine. I guess this is what we should do in QtAda? > OpenGL is portable by its nature, except the interface with underling OS/window system. Qt just fill this hole and provide portable way to construct OpenGL window and handle events. Thus, you still need to use some OpenGL binding to access to portable part of OpenGL API.
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