From: Brian P. <bri...@tu...> - 2004-02-23 17:43:28
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Chris Ison wrote: >>What do you mean by "hardware TexSubImage"? >> > > Maybe I'm reading it wrong but looking at these texbubimage functions, they > all copy out a the part of the texture to use, what I'm wondering is if > there is a way to tell the card to do that. I believe a DMA transfer is used to move texture data from main memory to the card. What else do you have in mind? > Also, atm Mesa falls back to software for vertex arrays, is it possable (and > is it planned) to push the vertex arrays to the r200 instead of falling > back to software. Is the DRM missing somthing that has prevented this from > happening already? Typically, OpenGL's vertex arrays have to be translated into DirectX-style arrays of vertex structures. That's done by Mesa / the driver. Thereafter, the gfx hardware is doing the vertex processing/rendering. I wouldn't call that a software fallback since I don't think the gfx cards can do the SOA->AOS conversion anyway. The DRM doesn't figure into this. Keith's the expert on this stuff but he's on vacation for 2 weeks. -Brian |