| Summary: | Feature request: implement wglMakeContextCurrentARB in Gallium | ||
|---|---|---|---|
| Product: | Mesa | Reporter: | Keith Kriewall <keith.kriewall> |
| Component: | Mesa core | Assignee: | mesa-dev |
| Status: | RESOLVED MOVED | QA Contact: | |
| Severity: | normal | ||
| Priority: | medium | CC: | brianp, jfonseca |
| Version: | 9.0 | ||
| Hardware: | All | ||
| OS: | Windows (All) | ||
| Whiteboard: | |||
| i915 platform: | i915 features: | ||
| Attachments: | Zip of wincopy for Windows | ||
This sort of WGL extensions are quite tricky to get implemented right, because we have to workaround Microsoft OpenGL runtime and cheat it. Could you provide a simple test case for this? The mesa demo wincopy uses glMakeContextCurrent. If you need a test case beyond this, please let me know. mesademos/src/xdemos/wincopy.c is an X11 sample, not WGL. And to test this I'd really need a wglMakeContextCurrentARB. Please note that, spite the similarties between glXMakeContextCurrent and wglMakeContextCurrentARB the implementation of these are miles apart. A port of wincopy.c to WGL should be fine though. OK, we'll look at porting wincopy to Windows, or writing another test application. We're booked up for several days, but I'll get it to you ASAP. Created attachment 75990 [details]
Zip of wincopy for Windows
Wincopy ported to Windows is attached, as a Dev Studio 2010 solution/project and source. Build as debug or release, and run on any machine with reasonably recent video hardware to see the application run. Then copy the gallium Mesa3D library (either softpipe or llvmpipe drivers) into the Debug or Release folder with the *.exe, and run again. The program will fail on an assert for the missing wglMakeContextCurrentARB function.
Thanks, -Keith.
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Please implement wglMakeContextCurrentARB in the Gallium state-tracker. The declaration would be at: /gallium/state_trackers/wgl/stw_getprocaddress.c stw_extension_entries[] : /* WGL_ARB_make_current_read */ STW_EXTENSION_ENTRY( wglMakeContextCurrentARB ), We have a need for support of glXMakeContextCurrent in the Gallium software renderers (softpipe and/or llvmpipe). Specification docs: (GLX 1.3, GL 1.2) http://www.opengl.org/sdk/docs/man2/xhtml/glXMakeContextCurrent.xml (WGL) http://www.opengl.org/registry/specs/ARB/wgl_make_current_read.txt