- #Opengl extensions viewer gdi generic drivers#
- #Opengl extensions viewer gdi generic driver#
- #Opengl extensions viewer gdi generic software#
- #Opengl extensions viewer gdi generic code#
The Intel-recommended D3DERR_DEVICELOST handling would be roughly equivalent - in this case - to destroying and recreating the GL context, and could be handled by your standard display mode changing code. I can do a quick check to confirm later on if you're interested.
#Opengl extensions viewer gdi generic driver#
My best guess is that the driver for the low-power Intel GPU includes either no or downlevel GL support, but I haven't tested this. It's a bit of a hairy thing to expect end-users to have to do, but I considered it fine enough (and accepted the risks involved) for my own personal use.
#Opengl extensions viewer gdi generic code#
I've access to a switchable graphics machine and have tested code using a more-or-less completely-featured G元.3 program on it, but I did disable switchable graphics in the Bios, and did use an AMD-provided driver (rather than the vendor-provided one) that is not supported for use with switchable graphics but which worked despite that. THANKS to everyone contributing to this topic! I wonder if there is some general "what-you-need-to-know-about" for switchable graphics and OpenGL. However, searching the internet about this issue lead me only to support pages of HP or Lenovo offering some specific driver or BIOS updates for specific products. But which device refers to the current adapter?įrom bug-reports, we get the impression that there are a lot of compatibility problems related to systems with switchable graphics. For switchable graphics this list is at least of length two. As with all WMI Classes, one gets a list of objects. On Windows, it's possible to query the available adapters with Win32_VideoController class.Some Intel tech-sheet (section 3.9) recommends to handle somehow D3DERR_DEVICELOST or WM_DISPLAYCHANGE messages - but is there some way to re-connect OpenGL to new hardware explicitly?
![opengl extensions viewer gdi generic opengl extensions viewer gdi generic](https://www.cadblog.pl/TS_SVGA_SWRx(web).gif)
#Opengl extensions viewer gdi generic drivers#
(Be assured that I checked for the most recent drivers thoroughly enough!) But I would like to learn more about the general state of support for switchable graphics: Of course, this might be the case also for my system. I know, the first thing everyone will think of is "driver problem". If I switched to the "second" adapter however (integrated GPU) the applications quitted with an error message stating that the required extension (fbo, pbuffer respectively) do not exist. Case 3) was special: If the "first" adapter (discrete GPU) was attached, the examples ran successfully.
![opengl extensions viewer gdi generic opengl extensions viewer gdi generic](https://windows-cdn.softpedia.com/screenshots/Mono-Addins_1.png)
The Qt examples ran smoothly in modes 1) or 2). On a system that supports switchable graphics, you have usually three different choices:ġ) Discrete Graphics (ATI Mobility FireGL V7500)Ģ) Integrated Graphics (Mobile Intel 4 Express Chipset Family)ģ) Switchable Graphics (switch between ATI and Intel graphics without reboot)
![opengl extensions viewer gdi generic opengl extensions viewer gdi generic](https://wiki.mcneel.com/_media/rhino/5/video/troubleshooting/videocard.png)
In the Bios, I chose the type of GPU driver. I tested the OpenGL examples " framebufferobject" and " pBuffers" on a system with switchable graphics.
#Opengl extensions viewer gdi generic software#
Since we are using the Qt framework for software development, I did a few tests with examples coming along with Qt (4.7.4 and 4.8.0). My reference system (Lenovo W500) runs Win7.
![opengl extensions viewer gdi generic opengl extensions viewer gdi generic](https://developer.ibm.com/developer/default/articles/use-opencv-to-recognize-contours/images/images20.jpg)
The technology has been supported from Vista onwards. Apperantly, this technology gains importance, also on Windows platforms. Recently, we've been told that there are compatibility problems on systems with support for switchable graphics. For that job, we engage FBOs or pBuffers, depending on the availability. I'm working on a software project that uses OpenGL to create high-resolution results of an image stiching process.