diff --git a/ref/vk/TODO.md b/ref/vk/TODO.md
index 3580b6b3..96212ef4 100644
--- a/ref/vk/TODO.md
+++ b/ref/vk/TODO.md
@@ -1,7 +1,7 @@
 # 2023-11-21 E334
 - [ ] reproducible rendering
     - [ ] dump all components
-        - [ ] script
+        - [x] script
         - [ ] try also dumping in native code
     - [ ] script for running and comparing results
     - [ ] command for random seed fixation
diff --git a/ref/vk/tools/rendertest.py b/ref/vk/tools/rendertest.py
new file mode 100755
index 00000000..583c3868
--- /dev/null
+++ b/ref/vk/tools/rendertest.py
@@ -0,0 +1,40 @@
+#!/usr/bin/env python3
+
+displays = {
+	'full': '',
+	'basecolor': 'basecolor',
+	'emissive': 'emissive',
+	'nshade': 'nshade',
+	'ngeom': 'ngeom',
+	'lighting': 'lighting',
+	'direct': 'direct',
+	'indirect': 'indirect',
+	'indirect_spec': 'indirect_spec',
+	'indirect_diff': 'indirect_diff',
+}
+
+saves = [
+	'brush2_01',
+	'brush_01',
+	'brush_02',
+	'c0a0d_emissive',
+	'light_01',
+]
+
+header = '''m_ignore 1
+scr_conspeed 100000
+con_notifytime 0
+hud_draw 0
+r_speeds 0
+developer 0'''
+
+print(header)
+
+for save in saves:
+	screenshot_base = 'rendertest/'
+	print('')
+	print(f'load rendertest_{save}; wait 20')
+	for name, display in displays.items():
+		print(f'rt_debug_display_only "{display}"; screenshot {screenshot_base}{save}_{name}.png; wait 1')
+
+print('quit')
diff --git a/ref/vk/tools/rendertest.script b/ref/vk/tools/rendertest.script
deleted file mode 100644
index d8457603..00000000
--- a/ref/vk/tools/rendertest.script
+++ /dev/null
@@ -1,12 +0,0 @@
-m_ignore 1
-scr_conspeed 100000
-hud_draw 0
-r_speeds 0
-developer 0
-rt_debug_display_only indirect
-load rendertest_brush2_01; wait 20; screenshot rendertest/brush2_01.png; wait 1
-load rendertest_brush_01; wait 20; screenshot rendertest/brush_01.png; wait 1
-load rendertest_brush_02; wait 20; screenshot rendertest/brush_02.png; wait 1
-load rendertest_c0a0d_emissive; wait 20; screenshot rendertest/c0a0d_emissive.png; wait 1
-load rendertest_light_01; wait 20; screenshot rendertest/light_01.png; wait 1
-quit