魔王撒旦
中国异度联盟盟主
When the PlayStation 2 came out, one unique characteristic of that system was that the screen fill rate was very fast. Even looking back now, it’s very fast. In some cases, it’s faster than the PS3. There, we were able to use a lot of textures. It was able to do that read-modify-write, where it reads the screen, you take the screenshot, and you modify it and send it back. It could do that very quickly. “I don’t know if anybody remembers, but when the PS2 first came out, the first thing I did on that was a demo for the announcement. I showed a demo of GT3 that showed the Seattle course at sunset with the heat rising off the ground and shimmering. You can’t re-create that heat haze effect on the PS3 because the read-modify-write just isn’t as fast as when we were using the PS2. There are things like that. Another reason is because of the transition to full HD.
PS2 跟 X360 的 frame buffer 都是 eDRAM,比較適合alpha blending 所需要的記憶體操作,PS3 則否 360有個10MB大的eDRAM,頻寬256GB/s,使得alpha blending幾乎是免費的,所以ZOE HD的X360版帧数要好于PS3版 顯示記憶體頻寬 PS2 2560bit 48GB/s PS3 128bit 22.4GB/s 解析度 PS2 480P PS3 720P alpha blending沒針對PS3最佳化的話, 效能會輸是正常的
查看个人网站
查看详细资料
TOP
元始天尊
足总杯冠军!
小黑屋
片反主
原帖由 @阿森纳 于 2013-8-18 09:00 发表 看来GT6也就能比GT5多这个热浪效果了~:D
侠客
禁止访问
微乳爆炸观察员
原帖由 富兰克林 于 2013-8-18 09:46 发表 PS2 没有GPU的概念吧,就靠那个很大的带宽,但是内存显存都和鼻屎一样大。
赵大爷
你们亲爱的大大爷
天外飞仙
魔神至尊