With IRIS GL, the way that feedback is handled differs depending on the computer running IRIS GL. OpenGL standardizes feedback functions so you can rely on consistent feedback among various hardware platforms. The following table lists the IRIS GL feedback functions and their equivalent OpenGL functions.
| IRIS GL Function | OpenGL Function | Meaning |
|---|---|---|
| feedback | glRenderMode(GL_FEEDBACK) | Switch to feedback mode. |
| endfeedback | glRenderMode(GL_RENDER) | Switch to rendering mode. |
| passthrough | glPassThrough | Place a token marker in the feedback buffer. |