problems with Opengl

[SlawQ]

Hi.

I have some problems with compiling code using 3D textures. My compiler complains exactly on function glTexImage3D. I iclude all necessary headers:

#include <GL/gl.h>
#include <GL/glu.h>
#include <GL/glext.h>

#include <GL/gl.h>
#include <GL/glu.h>
#include <GL/glext.h>

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and i get theese errors:

GlClass.cpp: In member function `virtual void GlClass::initializeGL()':
GlClass.cpp:35: error: `glTexImage3D' was not declared in this scope
GlClass.cpp:35: warning: unused variable 'glTexImage3D'

GlClass.cpp: In member function `virtual void GlClass::initializeGL()':
GlClass.cpp:35: error: `glTexImage3D' was not declared in this scope
GlClass.cpp:35: warning: unused variable 'glTexImage3D'

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I know that I have my system configured properly because I can compile simple programs without qt that use 3D textures. I wonder if it's some qt's opengl limitation because 2D textures work fine. I use qt 4.

Thanks for help.

[jacek]

Could you show us line 35 from GlClass.cpp?

[SlawQ]

This is my opengl initialisation:

void GlClass::initializeGL()
{
	glEnable(GL_TEXTURE_3D);
	glShadeModel(GL_SMOOTH);							
	glClearColor(0.0f, 0.0f, 0.0f, 0.5f);				
	glClearDepth(1.0f);									
	glEnable(GL_DEPTH_TEST);							
	glDepthFunc(GL_LEQUAL);								
	glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);
 
	glGenTextures(1, &texture[0]);
	glBindTexture(GL_TEXTURE_3D, texture[0]);
 
       /* Line 35 */
	glTexImage3D(GL_TEXTURE_3D, 0, GL_LUMINANCE, 32, 32, 32, 0, GL_LUMINANCE, GL_UNSIGNED_BYTE, tekstura);
 
	glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
	glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
 
}

void GlClass::initializeGL()
{
	glEnable(GL_TEXTURE_3D);
	glShadeModel(GL_SMOOTH);							
	glClearColor(0.0f, 0.0f, 0.0f, 0.5f);				
	glClearDepth(1.0f);									
	glEnable(GL_DEPTH_TEST);							
	glDepthFunc(GL_LEQUAL);								
	glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);

	glGenTextures(1, &texture[0]);
	glBindTexture(GL_TEXTURE_3D, texture[0]);

       /* Line 35 */
	glTexImage3D(GL_TEXTURE_3D, 0, GL_LUMINANCE, 32, 32, 32, 0, GL_LUMINANCE, GL_UNSIGNED_BYTE, tekstura);
	
	glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
	glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);

}

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[jacek]

It appears that the problem is in OpenGL itself.

Try this:

#define GL_GLEXT_PROTOTYPES
#include <GL/gl.h>
#include <GL/glu.h>
#include <GL/glext.h>

#define GL_GLEXT_PROTOTYPES
#include <GL/gl.h>
#include <GL/glu.h>
#include <GL/glext.h>

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[SlawQ]

It works!!
Thanks.