I have a Radeon 5000 series video card. Creating an OpenGL texture, glTexImage3D, causes a segmentation fault when the texture is above a certain size. The glTexImage command does not return, it crashes the application. I can not find the maximum size by checking the OpenGL error because glTexImage does not return. How can I find out what the maximum texture size is? The size that causes the crash is variable. The dimension 512x512 and depth over 692 to 750 will cause the seg fault. Thanks for any help. Apologies if discussion has been covered.