diff --git a/crt/crt-pi.slangp b/crt/crt-pi.slangp
new file mode 100644
index 0000000..281c9c6
--- /dev/null
+++ b/crt/crt-pi.slangp
@@ -0,0 +1,4 @@
+shaders = 1
+
+shader0 = shaders/crt-pi.slang
+filter_linear0 = false