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| 'glGenFramebuffersEXT': identifier not found |
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AverageJoeSSU Member since: 6/30/2007 From: Santa Clara, CA, United States |
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 Posted - 1/8/2008 3:01:17 AM |
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| i have been at this for the past hour... i checked my gl.h.. its 1.1 i dont have glee... im using glext.h i see the definition of the functions.... #include <windows.h> #include "TCHAR.H" #include <gl\gl.h> // Header File For The OpenGL32 Library #include <gl\glu.h> // Header File For The GLu32 Library #include <gl\glext.h> DeferredShading::DeferredShading() { this->Position = 100; this->DiffuseColor = 101; this->Normal = 102; glGenFramebuffersEXT(1, &Position); // ERROR is here } error is 'glGenFramebuffersEXT': identifier not found im using VS6.1 i believe. |
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Arex Member since: 7/1/2004 From: Helsinki, Finland |
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Posted - 1/8/2008 3:11:58 AM |
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| Are you sure glext.h contains it? Do you have the right library? Sincerely, Arto Ruotsalainen Dawn Bringer 3D - Tips & Tricks |
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Serge K Member since: 6/29/2000 From: CA, USA |
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Posted - 1/8/2008 4:29:02 AM |
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| glext.h only provides the types and constants. You have to declare and initialize the function pointers yourself. PFNGLGENFRAMEBUFFERSEXTPROC glGenFramebuffersEXT; glGenFramebuffersEXT = (PFNGLGENFRAMEBUFFERSEXTPROC) wglGetProcAddress( "glGenFramebuffersEXT" ); |
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Arex Member since: 7/1/2004 From: Helsinki, Finland |
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Posted - 1/8/2008 4:59:21 AM |
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| Yeah, GL spec doesn't require extension functions to be exported from library. That is why those need to be handled by yourself. :) Sincerely, Arto Ruotsalainen Dawn Bringer 3D - Tips & Tricks |
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V-man Member since: 3/2/2002 From: Montreal, Canada |
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Posted - 1/8/2008 10:27:14 AM |
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| Everything you need to know to get started is explained here http://www.opengl.org/wiki/index.php/Getting_started Don't waste time writing "wglGetProcAddress" for every function you need. glew and glee can do that for you and the link I gave gives you the links. |
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AverageJoeSSU Member since: 6/30/2007 From: Santa Clara, CA, United States |
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Posted - 1/8/2008 10:52:55 AM |
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| Thanks guys... im glad its that easy |
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AverageJoeSSU Member since: 6/30/2007 From: Santa Clara, CA, United States |
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Posted - 1/8/2008 1:14:36 PM |
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| So close! im getting..... unresolved external symbol __imp____glewGenFramebuffersEXT here is the order of what i am including.... #include <windows.h> #include "TCHAR.H" #include<gl\glew.h> #include<gl\glext.h> //#include<gl\glee.h> //#include <gl\gl.h> // Header File For The OpenGL32 Library //#include <gl\glu.h> // Header File For The GLu32 Library //#include <gl\glaux.h> // Header File For The Glaux Library when i include the others there are problems, and i cant seem to find the right order. ugh |
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NineYearCycle Member since: 8/30/2004 From: Nottingham, United Kingdom |
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Posted - 1/8/2008 5:56:08 PM |
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Quote: I don't think you need the other <glext.h> when you're including <glew.h> as it will probably pull it in as well but you'll still need the <gl.h> and <glu.h> headers if you want to use something in them... maybe, I think. I'm not sure as I use glew or glee with GLUT most of the time so ymmv. Andy *EDIT* also are you linking with the correct lib? glew32.lib You can do it with a pragma comment like below, just put it above the #includes. #pragma comment( lib, "glew32.lib" ) or you can make sure that you've got them all in your linker inputs. bring up your projects properties (this part might be different for VS6 as i'm using VSExpress) then open: linker->inputs->additional dependencies = "glu32.lib glut32.lib opengl32.lib glew32.lib" |
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AverageJoeSSU Member since: 6/30/2007 From: Santa Clara, CA, United States |
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Posted - 1/8/2008 6:10:46 PM |
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| YES! Good call on the EDIT, that is EXACTLY what was wrong. thanks a bunch -J |
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NineYearCycle Member since: 8/30/2004 From: Nottingham, United Kingdom |
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Posted - 1/8/2008 6:24:12 PM |
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| Glad to help out, it's always a much simpler problem than it seems at first and that's one that I always forget about ;) Andy |
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