From 721a4beddcf019d07dac5f69316ca4bd93e7e4a0 Mon Sep 17 00:00:00 2001
From: Zeno Rogue <zeno@attnam.com>
Date: Sat, 11 Apr 2020 00:42:41 +0200
Subject: [PATCH] auto-switch to pure

---
 system.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/system.cpp b/system.cpp
index 2e3a7dd6..4fc33f68 100644
--- a/system.cpp
+++ b/system.cpp
@@ -1282,6 +1282,8 @@ EX void set_geometry(eGeometry target) {
     if(bt::in() || WDIM == 3 || kite::in() || arb::in()) if(!hybri) variation = eVariation::pure;
     #endif
     if(S3 >= OINF) variation = eVariation::pure;
+    if(ginf[target].default_variation == eVariation::pure && geometry != gArchimedean)
+      variation = eVariation::pure;
     if(was_default) pmodel = default_model();
     if(nonisotropic && old_DIM == 2 && vid.texture_step < 4) vid.texture_step = 4;
     if(prod) { pmodel = mdPerspective; if(vid.texture_step < 4) vid.texture_step = 4; }