[vtkusers] OpenGL version error on macOS

Thu Aug 30 04:14:53 EDT 2018

2018-08-30 10:13 GMT+02:00 Elvis Stansvik <elvis.stansvik at orexplore.com>:
> 2018-08-29 23:10 GMT+02:00 Langer, Stephen A. (Fed) <stephen.langer at nist.gov>:
>> Thanks for the suggestion, but that didn't make any difference.
>>
>>
>>
>> I don't think the problem is the frameworks, actually.   I don't believe
>> that the OpenGL framework provided by Apple supports X11, so there's no
>> point in directing vtk towards it.
>>
>>
>>
>> I can get vtk to link to the OpenGL libraries provided by the MacPorts' mesa
>> and libGLU, but when it does, it complains about the OpenGL version.   The
>> mesa in MacPorts is version is 17.1.6, which supports OpenGL 4.5, so it
>> ought to work.  However, the Mesa release notes
>> (https://www.mesa3d.org/relnotes/17.1.6.html) say this, which I don't
>> completely understand:
>>
>>
>>
>> Mesa 17.1.6 implements the OpenGL 4.5 API, but the version reported by
>> glGetString(GL_VERSION) or glGetIntegerv(GL_MAJOR_VERSION) /
>> glGetIntegerv(GL_MINOR_VERSION) depends on the particular driver being used.
>> Some drivers don't support all the features required in OpenGL 4.5. OpenGL
>> 4.5 is only available if requested at context creation because compatibility
>> contexts are not supported.
>>
>>
>>
>> That doesn't way what version is provided if 4.5 isn't requested.  But is it
>> possible that vtk isn't getting the OpenGL context correctly?  I tried
>> looking at the code but didn't get very far.  I'm not at all familiar with
>> OpenGL.
>
> This is a bit out of my league, but I also don't understand that last
> sentence. And your diagnosis sounds correct, VTK seems to not get a
> capable enough context when you point it at MacPorts' mesa. Don't know
> why :/

I guess you could try running with the MESA_GL_VERSION_OVERRIDE
environment variable set to 3.2.

Elvis

>
> Elvis
>
>>
>>
>>
>> -- Steve
>>
>>
>>
>>
>>
>> On 8/29/18, 7:03 AM, "Elvis Stansvik" <elvis.stansvik at orexplore.com> wrote:
>>
>>
>>
>>     I've only ever built with Cocoa. But it looks like VTK is using
>>
>>     find_package(OpenGL ...) to find OpenGL, which in turn
>>
>>     (FindOpenGL.cmake) uses find_library(OPENGL_gl_LIBRARY OpenGL DOC
>>
>>     "OpenGL library for OS X") to find the library.
>>
>>
>>
>>     Where find_library looks for macOS frameworks can be controlled using
>>
>>     CMAKE_FRAMEWORK_PATH
>>
>>
>> (https://cmake.org/cmake/help/latest/variable/CMAKE_FRAMEWORK_PATH.html#variable:CMAKE_FRAMEWORK_PATH),
>>
>>     so perhaps try with
>>
>>
>>
>>         -DCMAKE_FRAMEWORK_PATH:PATH=/path/to/where/your/GL/libs/are
>>
>>
>>
>>     HTH,
>>
>>     Elvis
>>
>>
>>
>>     2018-08-27 17:54 GMT+02:00 Langer, Stephen A. (Fed)
>> <stephen.langer at nist.gov>:
>>
>>     > Hi --
>>
>>     >
>>
>>     >
>>
>>     >
>>
>>     > I finally need to actually solve a problem I encountered a year ago...
>> How
>>
>>     > do I get vtk to use the correct version of OpenGL on macOS using X11?
>>
>>     >
>>
>>     >
>>
>>     >
>>
>>     > I downloaded and built CylinderRenderingProperties from the VTK
>> examples
>>
>>     > site.  When I run it, it says
>>
>>     >
>>
>>     >
>>
>>     >
>>
>>     > Warning: In
>>
>>     >
>> /Users/langer/UTIL/VTK/VTK-8.1.1/Rendering/OpenGL2/vtkOpenGLRenderWindow.cxx,
>>
>>     > line 804
>>
>>     >
>>
>>     > vtkXOpenGLRenderWindow (0x7fa9fa81f800): VTK is designed to work with
>> OpenGL
>>
>>     > version 3.2 but it appears it has been given a context that does not
>> support
>>
>>     > 3.2. VTK will run in a compatibility mode designed to work with
>> earlier
>>
>>     > versions of OpenGL but some features may not work.
>>
>>     >
>>
>>     >
>>
>>     >
>>
>>     > and then seg faults.
>>
>>     >
>>
>>     >
>>
>>     >
>>
>>     > That was using vtk 8.1.1 build with VTK_USE_X11=ON and
>> VTK_USE_COCOA=OFF.
>>
>>     > OpenGL was provided by the MacPorts mesa and libGLU ports.  X11 was
>> also
>>
>>     > installed via MacPorts.
>>
>>     >
>>
>>     >
>>
>>     >
>>
>>     > If, on the other hand, I build vtk 8.1.1 with VTK_USE_COCOA=ON and
>>
>>     > VTK_USE_X11=OFF, then it uses OpenGL from
>>
>>     > /System/Library/Frameworks/OpenGL.framework, and
>> CylinderRenderingProperties
>>
>>     > compiles and runs correctly.
>>
>>     >
>>
>>     >
>>
>>     >
>>
>>     > Do I need to do something special when building or using VTK to get it
>> to
>>
>>     > find the correct version of OpenGL?
>>
>>     >
>>
>>     >
>>
>>     >
>>
>>     > (I'm running macOS High Sierra, but the problem existed with the
>> previous OS
>>
>>     > as well.)
>>
>>     >
>>
>>     >
>>
>>     >
>>
>>     > Thanks.
>>
>>     >
>>
>>     >     -- Steve
>>
>>     >
>>
>>     >
>>
>>     >
>>
>>     >
>>
>>     > _______________________________________________
>>
>>     > Powered by
>> https://na01.safelinks.protection.outlook.com/?url=www.kitware.com&data=02%7C01%7Cstephen.langer%40nist.gov%7C4daf5756210546585ab808d60d9efef4%7C2ab5d82fd8fa4797a93e054655c61dec%7C1%7C0%7C636711373868698381&sdata=zw2bxe3tqPD5fssLtnBuG%2FRl85OjPbTsfcC91Z%2BOw8o%3D&reserved=0
>>
>>     >
>>
>>     > Visit other Kitware open-source projects at
>>
>>     >
>> https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.kitware.com%2Fopensource%2Fopensource.html&data=02%7C01%7Cstephen.langer%40nist.gov%7C4daf5756210546585ab808d60d9efef4%7C2ab5d82fd8fa4797a93e054655c61dec%7C1%7C0%7C636711373868698381&sdata=PcYBqXP0j4eVWPzKggeLrqAQ7WiY9LnNtUkiZDxknRs%3D&reserved=0
>>
>>     >
>>
>>     > Please keep messages on-topic and check the VTK FAQ at:
>>
>>     >
>> https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.vtk.org%2FWiki%2FVTK_FAQ&data=02%7C01%7Cstephen.langer%40nist.gov%7C4daf5756210546585ab808d60d9efef4%7C2ab5d82fd8fa4797a93e054655c61dec%7C1%7C0%7C636711373868698381&sdata=uGa1FqKpH99%2FCE%2F6fuqHCtHT1aB8ZIF1whf3WOAbU5E%3D&reserved=0
>>
>>     >
>>
>>     > Search the list archives at:
>> https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fmarkmail.org%2Fsearch%2F%3Fq%3Dvtkusers&data=02%7C01%7Cstephen.langer%40nist.gov%7C4daf5756210546585ab808d60d9efef4%7C2ab5d82fd8fa4797a93e054655c61dec%7C1%7C0%7C636711373868698381&sdata=W8JHLG0N9x3mhkk4XC3ESXsQxcbq73fpsp0zArKboPQ%3D&reserved=0
>>
>>     >
>>
>>     > Follow this link to subscribe/unsubscribe:
>>
>>     >
>> https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fpublic.kitware.com%2Fmailman%2Flistinfo%2Fvtkusers&data=02%7C01%7Cstephen.langer%40nist.gov%7C4daf5756210546585ab808d60d9efef4%7C2ab5d82fd8fa4797a93e054655c61dec%7C1%7C0%7C636711373868698381&sdata=ez3xU4rzNT7kcWNTGsTOKs8HleLU1ykmGsgigHwvwxU%3D&reserved=0
>>
>>     >
>>
>>