Re: [PyOpenGL-Devel] Build problems from CVS source on win32

SourceForge Headquarters 225 Broadway Suite 1600 San Diego, CA 92101 +1 (858) 454-5900

Thanks Charlie,

I wasn't sure if I was just using CSV incorrectly or it was a problem 
with the code... opensource is great but there's always a steep learning 
curve.

To remove dependencies I put on glext.h, I manually added this to 
'src/config.h'. This was added to config.h because it is also used in 
vertex_shader.i. Mabye it should go in util.inc as it's swig counterpart 
is in there...
/* This is from glext.h and used by shader_objects.i and vertex_shader.i */
#ifndef GL_ARB_shader_objects
typedef char GLcharARB;
typedef unsigned int GLhandleARB;
#endif

I wonder how GLhandleARB is getting defined on linux. I'm using the GL.h 
headers provided by SGI. Does your GL.h file define these ?

There are a few defines that the shader_objects.i wrapper functions use. 
I manually added this to shader_objects.i:
/*
 The following defined needed to be declared in the swig generated .inc file
 because they are used by some of the wrappers functions.
*/
%{
#ifndef GL_ARB_shader_objects
#define GL_OBJECT_INFO_LOG_LENGTH_ARB 0x8B84
#define GL_OBJECT_ATTACHED_OBJECTS_ARB 0x8B85
#endif
%}

Macro declaration of glGetShaderSourceARB is incorrect, Line 71.
    DECLARE_VOID_EXT(glGetglShaderSourceARB, (GLhandleARB obj, GLsizei 
maxLength, GLsizei *length, GLcharARB *source), (obj, maxLength, length, 
source))
Needs to be:
    DECLARE_VOID_EXT(glGetShaderSourceARB, (GLhandleARB obj, GLsizei 
maxLength, GLsizei *length, GLcharARB *source), (obj, maxLength, length, 
source))

I see you also fixed the issue with _glGetObjectParameterivARB and 
_glGetInfoLogARB calling proc_glGetObjectParameterivARB in the latest 
CVS, great.

In vertex_progam.i line 34. GLboolean is cased incorrectly:
    DECLARE_EXT(glIsProgramARB, Glboolean, 0, (GLuint program), (program))
Needs to be:
    DECLARE_EXT(glIsProgramARB, GLboolean, 0, (GLuint program), (program))

Finally, it compiles and runs! The only change I needed to make to my 
python GL code was with glutCreateWindow. It gave an error saying it 
only accepted char* and I was passing a unicode string read from XML. 
This worked with the binary release of PyOpenGL, oh well. Simple fix on 
my part but I'm wondering if I need to compile PyOpenGL with unicode for 
this to work?

On to the reason I'm compiling from CSV in the first place, using GLSL...

Thanks,
-Simon

Charles Moad wrote:

>     I committed your fixes to cvs, but it looks like the cvs is in 
> kinda bad shape right now.  Typically I have no problems with the 
> linux build, but that's not the case now.  I don't have a windows 
> build environment unfortunately.  The shader related wrappers compile 
> fine for me with linux now though.
>
> Thanks,
>     Charlie
>
> simon wrote:
>
>> Hello,
>> I'm new to both CVS and SWIG so bare with me. (familiar with 
>> boost.python extension programming for whatever it's worth)
>>
>> I'm trying to build the latest PyOpenGL from CVS on win32 with VC7.1. 
>> I'm getting the following error when generating the swig wrappers:
>>    interface\GL\ARB\shader_objects.i(73): Error: Syntax error in input.
>>
>> The problem seems to be with the line:
>>    /* turn the exception handler on */
>>    GL_EXCEPTION_HANDLER()
>>
>> I replaced this line with what all the other interface files use...:
>>    %include py_exception_handler.inc
>>
>> This needed to be done in the following files:  (shader_objects.i, 
>> vertex_program.i, vertex_shader.i, EXT\framebuffer_object.i)
>>
>> It seems shader_objects.i is using the wrong define here:
>>    #if !EXT_DEFINES_PROTO || !defined(GL_EXT_framebuffer_object)
>> should be:
>>    #if !EXT_DEFINES_PROTO || !defined(GL_ARB_shader_objects)
>>
>> The macro declaration of glGetActiveUniformARB also has a wrong 
>> parameter type for 'index', uGLint needs to be changed to GLuint 
>> otherwise you get a compile error.
>>    DECLARE_VOID_EXT(glGetActiveUniformARB, (GLhandleARB programObj, 
>> uGLint index, GLsizei maxLength, GLsizei *length, GLint *size, GLenum 
>> *type, GLcharARB *name), (programObj, index, maxLength, length, size, 
>> type, name))
>>
>> Once I got to compiling, more problems with the shader_object stuff. 
>> I needed to include 'glext.h' in my config.h to get a bunch of 
>> typedefs and defines needed.
>> On to linking in which of course I don't have win32 libs for using 
>> shader objects so I get link unresolved externals for 
>> _glGetShaderSourceARB...
>>
>> Has anyone ever got this to work on win32 ? any help would be greatly 
>> appreciated.
>>
>> Thanks,
>> Simon Feltman
>> REZN8 Productions
>> www.rezn8.com
>>
>>
>>
>>
>>
>> -------------------------------------------------------
>> SF.Net email is sponsored by:
>> Tame your development challenges with Apache's Geronimo App Server. 
>> Download
>> it for free - -and be entered to win a 42" plasma tv or your very own
>> Sony(tm)PSP.  Click here to play: http://sourceforge.net/geronimo.php
>> _______________________________________________
>> PyOpenGL Homepage
>> http://pyopengl.sourceforge.net
>> _______________________________________________
>> PyOpenGL-Devel mailing list
>> PyO...@li...
>> https://lists.sourceforge.net/lists/listinfo/pyopengl-devel
>
>