“Running this code through NVShaderPerf gives (from memory) 5 cycles for 9 instructions. When inserted at the end of a longer shader where there is plenty of room for instruction pairing, the total overhead for the LogLuv conversion will be less than this, perhaps around 3 cycles. I haven’t checked with Marco to see how this compares to what he’s doing, but it matches the cycle numbers he mentioned in various posts so it’ll be pretty close.”作者: lwmq 时间: 2008-1-11 13:24
啊...e文 不太好....在慢慢的看,谢谢~~~作者: 以前的密码没了 时间: 2008-1-11 20:23
nao32 hdr 主要是应用rgbe作纹理、像素的数据格式。
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rgba 常见的带通道格式，每个8位共32位
rgbe 也是每个8位共32位，只是e是指数，不是通道。