<div dir="ltr">Thanks, looking forward to my next GPU purchase</div><div class="gmail_extra"><br><div class="gmail_quote">On 22 July 2015 at 09:12, Sergey Sharybin <span dir="ltr"><<a href="mailto:sergey.vfx@gmail.com" target="_blank">sergey.vfx@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Hi,<div><br></div><div>I can't tell on behalf of AMD team about plans for porting improvements from OSX to Windows/Linux. We are in contact with the team and when things becomes more clear we'll let the community to know. All i can say from myself here -- i'm really willing to have those improvements ported to other platforms as well.</div><div><br></div><div>The split kernel we'll continue improving/fixing. There are some issue in it which makes it unstable on certain platforms (some bad memory access or so, makes kernel to stuck). This thing is to be investigated and fixed there first. After that we'll be looking into supporting wider variety range of features there (SSS, Volume, branched path tracing). And eventually we'll need to switch to OpenCL 2.0 and use dynamic kernel scheduling, which will eliminate roundtrip to CPU for every kernel invokation.</div><div><br></div><div>As for CUDA -- it should also benefit from split kernel. In fact, one of the first ever tasks i did after picking op development of the initial patch was to organice the code in a way which will be most simple for reuse on CUDA.</div><div><br></div><div>it's also to be mentioned here that the work which was done by AMD OSX team will help us a lot improving performance of the split kernel and remove some workarounds in the code. So even in the scope of split kernel their work is really welcome and useful.</div><div><br></div><div>As for feature difference, you can check this <a href="https://blender.org/manual/render/cycles/features.html" target="_blank">https://blender.org/manual/render/cycles/features.html</a> Roughly speaking currently it's only transparent shadows which is a difference, but it should be possible to enable volume/SSS. I'm looking into this to happen for the 2.76.</div><div><br></div></div><div class="gmail_extra"><br><div class="gmail_quote"><div><div class="h5">On Wed, Jul 22, 2015 at 9:49 AM, Nazim Mer <span dir="ltr"><<a href="mailto:nazim.mer@gmail.com" target="_blank">nazim.mer@gmail.com</a>></span> wrote:<br></div></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div class="h5"><div dir="ltr">Hello Blender heads,<div>Its great that Blender Cycles is finally working on AMD GPUs. </div><div>However, I got to ask.</div><div>Are the osx amd opencl developers gonna move those improvements made in el capitan to the official amd driver for other users on windows and linux?</div><div><br></div><div>If the megakernel works in el Capitan, whilst also be better than the split kernel, where is the future for the split kernel?</div><div><br></div><div>I thought the split kernel was going to make its way into the cycles cuda code?</div><div>Especially since DUDE from luxrender has seen massive improvements from splitting the luxrender kernel?</div><div><br></div><div>Is the split kernel going to be shelfed, or is it going to be the new code face of cycles, as i heard that even nvidia gpus are starting struggle with the megakernal</div><div><br></div><div>What are the plans for the split kernel....</div><div><br></div><div>"<span style="color:rgb(51,51,51);font-family:'Lucida Grande','Lucida Sans Unicode','Lucida Sans',Lucida,Verdana,sans-serif;font-size:12px;line-height:1.5em;text-align:justify;background-color:rgb(238,238,238)">AMD team who's working on OSX drivers for El Capitan (OS X 10.11) did really nice work on improving the driver which is now capable of compiling and running OpenCL megakernel. The following features are supported:</span></div><ul style="color:rgb(51,51,51);font-family:'Lucida Grande','Lucida Sans Unicode','Lucida Sans',Lucida,Verdana,sans-serif;font-size:12px;line-height:17.3999996185303px;background-color:rgb(238,238,238)"><li>Hard and rough surface BSDF</li><li>Transparent shadows</li><li>Motion blur (camera, object, deformation)</li><li>Hair</li></ul><div> </div><div>"</div><div>Are these features working for the split kernel ?</div><div><br></div><div>Kind Regards,</div><div><br></div><div>Nazim</div></div>
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<br></blockquote></div><span class="HOEnZb"><font color="#888888"><br><br clear="all"><div><br></div>-- <br><div><div><span style="color:rgb(102,102,102)">With best regards, Sergey Sharybin</span></div></div>
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