Hmm so would that apply to all vector alu ops? Weird (dx10 certainly does not generally clamp NaNs to zero).
Roland Am 10.12.2014 um 21:40 schrieb Marek Olšák: > From the SI ISA: > > "Used by the vector ALU to force DX10-style treatment of NaNs: when > set, clamp NaN to zero; otherwise, pass NaN through." > > Marek > > On Wed, Dec 10, 2014 at 9:33 PM, Roland Scheidegger <srol...@vmware.com> > wrote: >> I am curious, how does this bit change the shader (or shader operations, >> export, or whatever). >> I guess you're referring to the bit saying "Drives dx10 clamp in spi_sq >> newWave cmd" settable separately for each shader type but that doesn't >> mean much to me :-). >> >> Roland >> >> Am 10.12.2014 um 21:16 schrieb Marek Olšák: >>> Wow, yes! The DX10_CLAMP bit fixes this issue too. I guess we don't >>> have to use legacy instructions now. >>> >>> Marek >>> >>> On Mon, Dec 8, 2014 at 5:05 AM, Michel Dänzer <mic...@daenzer.net> wrote: >>>> On 04.12.2014 21:34, Marek Olšák wrote: >>>>> From: Marek Olšák <marek.ol...@amd.com> >>>>> >>>>> Discussion: >>>>> https://urldefense.proofpoint.com/v2/url?u=https-3A__bugs.freedesktop.org_show-5Fbug.cgi-3Fid-3D83510-23c8&d=AAIGaQ&c=Sqcl0Ez6M0X8aeM67LKIiDJAXVeAw-YihVMNtXt-uEs&r=Vjtt0vs_iqoI31UfJxBl7yv9I2FeiaeAYgMTLKRBc_I&m=wYbokNJOnFBGstvWMmYoGPCVEP9QfPQw0wnRl42Jw0Q&s=rVzVSrX2MYZiMDzqraJyiS53MdcsrSnVfVdG6WQyWOs&e= >>>> >>>> I wonder if we could avoid at least some of this trouble using the DX10 >>>> / IEEE bits in the shader MODE register. >>>> >>>> >>>> -- >>>> Earthling Michel Dänzer | >>>> https://urldefense.proofpoint.com/v2/url?u=http-3A__www.amd.com_&d=AAIGaQ&c=Sqcl0Ez6M0X8aeM67LKIiDJAXVeAw-YihVMNtXt-uEs&r=Vjtt0vs_iqoI31UfJxBl7yv9I2FeiaeAYgMTLKRBc_I&m=wYbokNJOnFBGstvWMmYoGPCVEP9QfPQw0wnRl42Jw0Q&s=j8yXvz073rSQDrLT-gDX9jMI3wFgZNH4XNK78KVjwF4&e= >>>> Libre software enthusiast | Mesa and X developer >>> _______________________________________________ >>> mesa-dev mailing list >>> mesa-dev@lists.freedesktop.org >>> https://urldefense.proofpoint.com/v2/url?u=http-3A__lists.freedesktop.org_mailman_listinfo_mesa-2Ddev&d=AAIGaQ&c=Sqcl0Ez6M0X8aeM67LKIiDJAXVeAw-YihVMNtXt-uEs&r=Vjtt0vs_iqoI31UfJxBl7yv9I2FeiaeAYgMTLKRBc_I&m=wYbokNJOnFBGstvWMmYoGPCVEP9QfPQw0wnRl42Jw0Q&s=6RdqH9tgdRJ6eAyvHuK6hKxQ2yBJY8p0v3vGiVT1Y20&e= >>> >> _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/mesa-dev
