[vtk-developers] vtkGenericOpenGLRenderWindow crashes TestSetGet

[David Gobbi]

I added a very rough wiki page for the wrapping tools:
http://www.vtk.org/Wiki/VTK/Wrappers

 - David

On Fri, May 11, 2012 at 12:04 PM, Jean-Christophe Fillion-Robin
<jchris.fillionr at kitware.com> wrote:
> +1 for to centralize the wrapper documentation :) Would be happy to read
> through it.
> Thanks
> Jc
>
> On Fri, May 11, 2012 at 11:46 AM, David Gobbi <david.gobbi at gmail.com> wrote:
>>
>> Hi Brad,
>>
>> It seems that vtkTextureUnitManager isn't in
>> vtkRenderingOpenGLHierarchy.txt, so the wrappers no longer
>> automatically exclude methods that use it as a parameter.  I'll
>> look into this, I think that something is missing either from the
>> CMakeLists.txt or from one of the cmake wrapping macros.
>> The new BTX/ETX behavior that was brought into VTK in 5.8
>> is documented here:
>>
>> http://www.vtk.org/Wiki/VTK/Remove_BTX_ETX
>>
>> I need to add a "Wrapping" section to the wiki that links to the
>> various wiki pages that are related to wrapping... there's a fair bit
>> of documentation for the wrappers, but none of it is easy to find.
>>
>>  - David
>>
>>
>> On Fri, May 11, 2012 at 9:08 AM, Brad King <brad.king at kitware.com> wrote:
>> > Hi Folks,
>> >
>> > TestSetGet currently crashes:
>> >
>> >  http://open.cdash.org/testDetails.php?test=145727028&build=2266971
>> >
>> > when running against a Mesa GL library.  It appears to call
>> > glGetString(GL_RENDERER) without a GL context.
>> >
>> > At some point during the modularization transition the Tcl wrappers
>> > started seeing vtkOpenGLRenderWindow::GetTextureUnitManager even
>> > though it is in a BTX/ETX block (David G?).  That exposes this
>> > existing problem.
>> >
>> > Essentially the test runs
>> >
>> >  package require vtk
>> >  vtkGenericOpenGLRenderWindow x
>> >  x GetTextureUnitManager
>> >
>> > but one can simplify it to
>> >
>> >  package require vtk
>> >  vtkGenericOpenGLRenderWindow x
>> >  [x GetHardwareSupport] GetNumberOfTextureUnits
>> >
>> > or even just
>> >
>> >  vtkGenericOpenGLRenderWindow x
>> >  [x GetExtensionManager] ExtensionSupported "GL_VERSION_2_0"
>> >
>> > The method vtkOpenGLExtensionManager::ExtensionSupported has:
>> >
>> >  const char *gl_renderer=
>> >    reinterpret_cast<const char *>(glGetString(GL_RENDERER));
>> >
>> > but it is not safe to call glGetString without a context.
>> >
>> > -Brad