>> 2. the palette_size can be bigger than crtc->gamma_size, [...] > > Can it really? In Aaron's example, both have 1024 entries. Isn't it 2^11 for palette_size but 2^10 gamma_size?
>> So according to the above understanding, I think there're two solution to >> the problem: >> 1. DDX is responsible for setting crtc->gamma_size to max hardware capable >> gamma >> CLUT size, and this patch is still needed for situation like Aaron >> described (11bit color >> but 10bit gamma CLUT) and old amdgpu KMS driver that can only support >> 256 gamma >> CLUT but need 10bit color. > > If amdgpu only programs 256 gamma CLUT entries, does the hardware > actually interpolate the missing entries as described by Aaron? Need get confirm from DCE and kernel guys. > Does this allow displaying gradients without banding, whereas the same > gradients show banding at depth 24? I don't quite get this question, can you describe in detail? Regards, Qiang _______________________________________________ xorg-devel@lists.x.org: X.Org development Archives: http://lists.x.org/archives/xorg-devel Info: https://lists.x.org/mailman/listinfo/xorg-devel
