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楼主 |
发表于 2006-11-13 10:46:00
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Re:D3D VB是不是分一大块。然后其他的都只放到其中一部分
下面这段,最后一句看不明白。
"VAR Memory Allocation and Issues
Video memory has faster GPU access, but precious
• Same memory used for framebuffer and textures
• Could cause texture thrashing
• On systems without Fast Writes, writes will be slow
AGP memory typically easier to use
• Write sequentially to take advantage of CPU’s write
combiners (and maximize memory bandwidth)
• Usually as fast as Video memory
Best to use either one large chunk of AGP or one
large chunk of Video; switching is expensive
"
他的意思是开个大的AGP,大的 VIDEO?
switching 是交换的什么东西?
文件来源:OpenGL Performance
nvidia |
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