I''ve wrote a small app to test some texture fonts from NeHe''s tutorial to work with JPG''s instead of BMPs. Anyway...when I call glGenTextures it works in my test program ... but not in my app. glGenTextures returns whatever I give it.

        tImageJPG *pImage = LoadJPG(aFile);

	if(pImage == NULL)					
		return false;

	glGenTextures(1, &mGLTexture);
	if(mGLTexture == GL_INVALID_VALUE)
		return false;

	glBindTexture(GL_TEXTURE_2D, mGLTexture);

so if I set mGLTexture = 666 ... it will return 666...or whatever I tell it too. Never Invalid value ... any ideas on why this is happening? I checked the code to make sure I have textures enabled ... and like I said, I have a test app that it works in ... but not here. both apps use the same code so I''m guessing its something I''m doing BEFORE I call this that is the difference.

give it twice the same number and i bet it will return different numbers..

glGetError could return GL_INVALID_VALUE. always check errors with glGetError.

"take a look around" - limp bizkit
www.google.com

Thanks for the tip ...

I checked it with glGetError and got an GL_INVALID_OPERATION

so now to figure out how/why its making it do that ...

Error Codes
The following are the error codes generated and their conditions.

Error code Condition
GL_INVALID_VALUE n was a negative value.
GL_INVALID_OPERATION glGenTextures was called between a call to glBegin and the corresponding call to glEnd.



straight from MSDN in your favourite visual studio or webbrowser:D



uhm.. and check if glGetError does really return GL_NO_ERROR right before the call..

"take a look around" - limp bizkit
www.google.com

Why do you want to pass numbers to it any way? glGenTextures returns the ID for the texture.

was a test ... glGenTextures wasnt assigning the textureid. In other programs glGentextures reassigns it ... it appears to go in order 1, 2, 3 ect.

anyway ... lved the problem ... it wasnt in a glBegin or End. opengl wasnt completely initilized before I started loading textures. :\