diff --git a/test/renders/Makefile b/test/renders/Makefile
index bed120bed..78a0b791e 100644
--- a/test/renders/Makefile
+++ b/test/renders/Makefile
@@ -1,4 +1,4 @@
-# RCSid $Id: Makefile,v 1.27 2020/07/30 02:19:27 greg Exp $
+# RCSid $Id: Makefile,v 1.28 2021/01/01 20:15:35 greg Exp $
 #
 # Render and primitive type testing
 #
@@ -14,7 +14,7 @@ endif
 RDU_PFILT = pfilt -1 -r 1 -x 128 -y 128 -pa 1
 
 # Image comparison command
-IMG_CMP = radcompare -rms 0.07 -max 1.5
+IMG_CMP = radcompare -rms 0.08 -max 1.5
 
 # Default target is to test everything
 all:	test-xform test-oconv test-rad test-rfluxmtx test-rpiece \
diff --git a/test/renders/mixtex.rif b/test/renders/mixtex.rif
index 761ecb8b5..758c4cd93 100644
--- a/test/renders/mixtex.rif
+++ b/test/renders/mixtex.rif
@@ -1,4 +1,4 @@
-# RCSid $Id: mixtex.rif,v 1.6 2020/08/10 20:48:12 greg Exp $
+# RCSid $Id: mixtex.rif,v 1.7 2021/01/01 20:15:35 greg Exp $
 #
 # A test of different mixtures and textures on disks
 #
@@ -20,7 +20,7 @@ ZONE = I -8 0 0 5 0 3
 
 EXP = 1.5
 
-PGMAP = mixtex.gpm 1M 40
+PGMAP = mixtex.gpm 1M 40 100
 PCMAP = mixtex.cpm 10M 40
 
 RES = 1024
diff --git a/test/renders/ref/mixtex_def.hdr b/test/renders/ref/mixtex_def.hdr
index 020cbde09..d5c99c2b4 100644
Binary files a/test/renders/ref/mixtex_def.hdr and b/test/renders/ref/mixtex_def.hdr differ
diff --git a/test/renders/ref/mixtex_fish.hdr b/test/renders/ref/mixtex_fish.hdr
index 04dd56ed0..19ce61c2c 100644
Binary files a/test/renders/ref/mixtex_fish.hdr and b/test/renders/ref/mixtex_fish.hdr differ
diff --git a/test/renders/ref/mixtex_plan.hdr b/test/renders/ref/mixtex_plan.hdr
index c24ce885f..0a6919a2a 100644
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diff --git a/test/renders/ref/mixtex_rplan.hdr b/test/renders/ref/mixtex_rplan.hdr
index 15e687d03..f2efaa24b 100644
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