add raptor engienering link

diff --git a/3d_gpu.mdwn b/3d_gpu.mdwn
index 8bdb992820cfc734ab89dde623e5c450ddcd386b..b611d76bd8a00e01a303de73d1965a497bc3e055 100644 (file)
--- a/3d_gpu.mdwn
+++ b/3d_gpu.mdwn
@@ -82,6 +82,7 @@ Progress:
 * <http://bugs.libre-riscv.org/buglist.cgi?columnlist=assigned_to%2Cbug_status%2Cresolution%2Cshort_desc%2Ccf_budget&f1=cf_nlnet_milestone&o1=equals&query_format=advanced&resolution=---&v1=NLnet.2019.02>
 * <https://pdfs.semanticscholar.org/5060/4e9aff0e37089c4ab9a376c3f35761ffe28b.pdf>
 * <http://www.acsel-lab.com/arithmetic/arith15/papers/ARITH15_Takagi.pdf>
+* <https://youtu.be/o5Ihqg72T3c>
 
 # Analog Simulation