Sign in to follow this  

Hardware support for algorithms

This topic is 4515 days old which is more than the 365 day threshold we allow for new replies. Please post a new topic.

If you intended to correct an error in the post then please contact us.

Recommended Posts

Can anyone tell me How does hardware support a rendering technique, for example DX 9 cards (NVIDIA 7800, RADEON X850XT) supporting shader model 3.0.

Share this post


Link to post
Share on other sites
i guess i am, as well as other non shader algoritms. For instance a DX 7 Card cant support SM 3.0 but A DX 9 card can, what allows the card to support that enhanced functionality?

Share this post


Link to post
Share on other sites
Well, the hardware is totally different. Modern GPU's (aka shader driven ones) have a series of ALU's that are used to run the shader instructions (over simplified - but you get the idea), and hence are programmable. Earlier GPU's - aka fixed function ones - don't have this at all, and are essentially "hardwired" in what they can do, all you have control over is what path is used. The Geforce 3/4 series of cards - even though they could support PS1.3 were still hardwired, in essentially a switches and dials type configuration.

Share this post


Link to post
Share on other sites
Sign in to follow this