> As for images, there are special image upload/download commands. > They're just privileged. And the GPU can't directly access host > memory. Instead, you have to upload an image (via DMA) before you can > use it. The advantage (besides not allowing the GPU to look at kernel > memory) is that uploading an image is more efficient than accessing it > nonlinearly like you would get with a texture lookup. The > disadvantage is that texture lookups may not look at all pixels in the > texture. You win some, you lose some. But our major goal is to make > the design small, resulting in some tradeoffs
Do you have some docs already about what this DMA engine would look like ? Ben. _______________________________________________ Open-graphics mailing list [email protected] http://lists.duskglow.com/mailman/listinfo/open-graphics List service provided by Duskglow Consulting, LLC (www.duskglow.com)
