An Interactive Introduction to OpenGL Programming
An Interactive Introduction to OpenGL Programming
An Interactive Introduction to OpenGL Programming
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Working with <strong>OpenGL</strong><br />
Extensions<br />
• <strong>OpenGL</strong> is always changing<br />
– features are first introduced as extensions<br />
• Call glGetString( GL_EXTENSIONS ) <strong>to</strong> see<br />
the extensions for your <strong>OpenGL</strong> implementation<br />
• glext.h contains latest function names and<br />
<strong>to</strong>kens<br />
• May need <strong>to</strong> query a function pointer <strong>to</strong><br />
gain access <strong>to</strong> extension’s function<br />
– Window system dependent pointer request<br />
function<br />
• glXGetProcAddress(), wglGetProcAddress()
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