How is functionality already implemented by Mesa added to a driver?
I want to try adding vertex program support to the r200 driver.
I took a look at the i915 driver to see what is done there. The only things I could find where the added extensions in the extension string and the added vertex program stage in the pipeline struct.
Where else should I look and modify the r200 driver?
You normally would only need to turn the extension on. However, there is a conflict in the r200 driver, as that hardware implements TNL but not vertex programs. So, you'll need to modify the driver to recognize when a vertex program is active, and make sure that a TNL fallback takes place so that Mesa gets to handle the program.
Keith
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