<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> </head> <body> <p>On RADV, we already support fp16 with the LLVM backend (not saying it's always optimized though) and with ACO it should be mostly working but not yet enabled because I think we would like fast packed math support first and I'm not sure if fp16 I/O are implemented.<br> </p> <p>There is also some missing fp16 optimizations in the ACO backend which makes some games (eg. Youngblood) a bit slower if fp16 features/extensions are exposed but the gap should be filled soon hopefully.<br> </p> <p>I think the most important thing missing is a SLP vectorizer in NIR for us.<br> </p> <div class="moz-cite-prefix">On 5/4/20 8:43 PM, Marek Olšák wrote:<br> </div> <blockquote type="cite" cite="mid:CAAxE2A5gO3V70XKoS0JrjwBbbenp=Y0YH0AEbELg8pyGzH+4CA@mail.gmail.com"> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> <div dir="ltr"> <div>Hi,</div> <div><br> </div> <div>This is the status of mediump support in Mesa. What I listed is what AMD GPUs can do. "Yes" means what Mesa supports.</div> <div><br> </div> <div> <span></span> <table style="font-family:"Liberation Sans";font-size:x-small" cellspacing="0" border="0"> <colgroup width="590"></colgroup> <colgroup width="184"></colgroup> <colgroup width="86"></colgroup> <tbody style="font-family:"Liberation Sans";font-size:x-small"> <tr style="font-family:"Liberation Sans";font-size:x-small"> <td style="font-family:"Liberation Sans";font-size:x-small" height="19" align="left"><b><font color="#000000">Feature</font></b></td> <td style="font-family:"Liberation Sans";font-size:x-small" align="left"><b><font color="#000000">FP16 support</font></b></td> <td style="font-family:"Liberation Sans";font-size:x-small" align="left"><b><font color="#000000">Int16 support</font></b></td> </tr> <tr style="font-family:"Liberation Sans";font-size:x-small"> <td style="font-family:"Liberation Sans";font-size:x-small" height="19" align="left"><font color="#000000">ALU</font></td> <td style="font-family:"Liberation Sans";font-size:x-small" align="left"><font color="#000000">Yes</font></td> <td style="font-family:"Liberation Sans";font-size:x-small" align="left"><font color="#000000">No</font></td> </tr> <tr style="font-family:"Liberation Sans";font-size:x-small"> <td style="font-family:"Liberation Sans";font-size:x-small" height="19" align="left"><font color="#000000">Uniforms</font></td> <td style="font-family:"Liberation Sans";font-size:x-small" align="left"><font color="#000000">No</font></td> <td style="font-family:"Liberation Sans";font-size:x-small" align="left"><font color="#000000">No</font></td> </tr> <tr style="font-family:"Liberation Sans";font-size:x-small"> <td style="font-family:"Liberation Sans";font-size:x-small" height="19" align="left"><font color="#000000">VS in</font></td> <td style="font-family:"Liberation Sans";font-size:x-small" align="left"><font color="#000000">No</font></td> <td style="font-family:"Liberation Sans";font-size:x-small" align="left"><font color="#000000">No</font></td> </tr> <tr style="font-family:"Liberation Sans";font-size:x-small"> <td style="font-family:"Liberation Sans";font-size:x-small" height="19" align="left"><font color="#000000">VS out / FS in</font></td> <td style="font-family:"Liberation Sans";font-size:x-small" align="left"><font color="#000000">No</font></td> <td style="font-family:"Liberation Sans";font-size:x-small" align="left"><font color="#000000">No</font></td> </tr> <tr style="font-family:"Liberation Sans";font-size:x-small"> <td style="font-family:"Liberation Sans";font-size:x-small" height="18" align="left"><font color="#000000">FS out</font></td> <td style="font-family:"Liberation Sans";font-size:x-small" align="left"><font color="#000000">No</font></td> <td style="font-family:"Liberation Sans";font-size:x-small" align="left"><font color="#000000">No</font></td> </tr> <tr style="font-family:"Liberation Sans";font-size:x-small"> <td style="font-family:"Liberation Sans";font-size:x-small" height="19" align="left"><font color="#000000">TCS, TES, GS out / in</font></td> <td style="font-family:"Liberation Sans";font-size:x-small" align="left"><font color="#000000">No</font></td> <td style="font-family:"Liberation Sans";font-size:x-small" align="left"><font color="#000000">No</font></td> </tr> <tr style="font-family:"Liberation Sans";font-size:x-small"> <td style="font-family:"Liberation Sans";font-size:x-small" height="19" align="left"><font color="#000000">Sampler coordinates (only coord, derivs, lod, bias; not offset and compare)</font></td> <td style="font-family:"Liberation Sans";font-size:x-small" align="left"><font color="#000000">No</font></td> <td style="font-family:"Liberation Sans";font-size:x-small" align="left"><font color="#000000">---</font></td> </tr> <tr style="font-family:"Liberation Sans";font-size:x-small"> <td style="font-family:"Liberation Sans";font-size:x-small" height="19" align="left"><font color="#000000">Image coordinates</font></td> <td style="font-family:"Liberation Sans";font-size:x-small" align="left"><font color="#000000">---</font></td> <td style="font-family:"Liberation Sans";font-size:x-small" align="left"><font color="#000000">No</font></td> </tr> <tr style="font-family:"Liberation Sans";font-size:x-small"> <td style="font-family:"Liberation Sans";font-size:x-small" height="19" align="left"><font color="#000000">Return value from samplers (incl. sampler buffers)</font></td> <td style="font-family:"Liberation Sans";font-size:x-small" align="left"><font color="#000000">Yes</font><br> </td> <td style="font-family:"Liberation Sans";font-size:x-small" align="left"><font color="#000000">No</font></td> </tr> <tr style="font-family:"Liberation Sans";font-size:x-small"> <td style="font-family:"Liberation Sans";font-size:x-small" height="19" align="left"><font color="#000000">Return value from image loads (incl. image buffers)</font></td> <td style="font-family:"Liberation Sans";font-size:x-small" align="left"><font color="#000000">No</font></td> <td style="font-family:"Liberation Sans";font-size:x-small" align="left"><font color="#000000">No</font></td> </tr> <tr style="font-family:"Liberation Sans";font-size:x-small"> <td style="font-family:"Liberation Sans";font-size:x-small" height="19" align="left"><font color="#000000">Data source for image stores (incl. image buffers)</font></td> <td style="font-family:"Liberation Sans";font-size:x-small" align="left"><font color="#000000">No</font></td> <td style="font-family:"Liberation Sans";font-size:x-small" align="left"><font color="#000000">No</font></td> </tr> <tr style="font-family:"Liberation Sans";font-size:x-small"> <td style="font-family:"Liberation Sans";font-size:x-small" height="19" align="left"><font color="#000000">If 16-bit sampler/image instructions are surrounded by conversions, promote them to 32 bits</font></td> <td style="font-family:"Liberation Sans";font-size:x-small" align="left"><font color="#000000">No</font></td> <td style="font-family:"Liberation Sans";font-size:x-small" align="left"><font color="#000000">No</font></td> </tr> </tbody> </table> </div> <div><br> </div> <div>Please let me know if you don't see the table correctly.</div> <div><br> </div> <div> I'd like to know if I can enable some of them using the existing FP16 CAP. The only drivers supporting FP16 are currently Freedreno and Panfrost.</div> <div><br> </div> <div>Thanks,</div> <div>Marek<br> </div> </div> <br> <fieldset class="mimeAttachmentHeader"></fieldset> <pre class="moz-quote-pre" wrap="">_______________________________________________ mesa-dev mailing list <a class="moz-txt-link-abbreviated" href="mailto:mesa-dev@lists.freedesktop.org">mesa-dev@lists.freedesktop.org</a> <a class="moz-txt-link-freetext" href="https://lists.freedesktop.org/mailman/listinfo/mesa-dev">https://lists.freedesktop.org/mailman/listinfo/mesa-dev</a> </pre> </blockquote> </body> </html>