mad ro.xy v1.xyxx, l(1.000000,-1.000000,0.0000,0.000000), l(0.000000,1.000000,0.0000,0.000000)
这个东西真让我困惑
好吧 是 l(1.000000,-1.000000,0.0000,0.000000)×v1.xyxx+l(0.000000,1.000000,0.0000,0.000000)-》ro.xy
viewpor不知道有没有 y -y这个问题
感觉是viewport 本来是这样的 in ps4
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现在变成
in
d3d11
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还有个现象是 viewport 为局部的clearscene都不好使了，我觉得也许我应该先把clearscene的问题解决，然后再做blur的viewport有问题这个问题
全屏的clearscene或者cleartarget都好使
这明显是viewport和显示的不一样
ishl 左移
ishl ro, s0, l(2)
把s0左移两位放入ro