From 8ae9a9116e4931a43ee25a1aa1160403b627e27d Mon Sep 17 00:00:00 2001
From: m11 <m@chaospott.de>
Date: Wed, 28 Jan 2026 19:16:39 +0100
Subject: [PATCH] Simple wrapper script for shady

---
 README.md            | 17 +++++++++++++++++
 pixelthudconf.py     |  1 +
 setup.sh             |  4 ++++
 shaders/example.glsl | 35 +++++++++++++++++++++++++++++++++++
 shady.sh             |  8 ++++++++
 5 files changed, 65 insertions(+)
 create mode 100644 shaders/example.glsl
 create mode 100755 shady.sh

diff --git a/README.md b/README.md
index 960d2bc..58c92e9 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,20 @@
 # Pixelthud
 
 Animationen für die Decken-LED-Matrix im Chaospott. Kompatibel zu pixelserver2.
+
+## Shady wrapper
+
+Wrapper script for https://codeberg.org/polyfloyd/shady
+
+go install github.com/polyfloyd/shady/cmd/shady@latest
+
+### Preview with https://codeberg.org/polyfloyd/ledcat:
+
+cargo install ledcat
+
+export EGL_PLATFORM=surfaceless 
+export MESA_GL_VERSION_OVERRIDE=3.3
+export LEDCAT_GEOMETRY=80x40
+
+./shady.sh 80 40 20 | ledcat -f 20 show
+
diff --git a/pixelthudconf.py b/pixelthudconf.py
index 6be5ddb..439c4df 100644
--- a/pixelthudconf.py
+++ b/pixelthudconf.py
@@ -5,4 +5,5 @@ Apps = [
     {"guiname": "Rock-paper-scissors-spock-lizard", "name": "rps", "cmd": "apps/rps.py", "persistent": False},
     {"guiname": "Doom Fire", "name": "doomfire", "cmd": "apps/doom_fire_psx2.py", "persistent": False},
     {"guiname": "Maxwell FDTD", "name": "fdtd", "cmd": "apps/fdtd.py", "persistent": False},
+    {"guiname": "Shady wrapper", "name": "shady", "cmd": "apps/shady.sh", "persistent": False},
 ]
diff --git a/setup.sh b/setup.sh
index 992ca1c..5581ea4 100755
--- a/setup.sh
+++ b/setup.sh
@@ -5,12 +5,16 @@ cp -f plane_wave.py ../../apps/
 cp -f rps.py ../../apps/
 cp -f doom_fire_psx2.py ../../apps/
 cp -f fdtd.py ../../apps/
+cp -f shady.sh ../../apps/
 
+mkdir -p ../../apps/shaders/
+cp -a shaders/. ../../apps/shaders/
 
 chmod +x ../../apps/fading_pixels.py
 chmod +x ../../apps/plane_wave.py
 chmod +x ../../apps/rps.py
 chmod +x ../../apps/doom_fire_psx2.py
 chmod +x ../../apps/fdtd.py
+chmod +x ../../apps/shady.sh
 
 cp -f pixelthudconf.py ../../configs/
diff --git a/shaders/example.glsl b/shaders/example.glsl
new file mode 100644
index 0000000..aaae69a
--- /dev/null
+++ b/shaders/example.glsl
@@ -0,0 +1,35 @@
+/**
+ * The MIT License
+ *
+ * Copyright (c) 2011 Mr.doob
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+void mainImage(out vec4 fragColor, in vec2 fragCoord) {
+    vec2 position = ( fragCoord.xy / iResolution.xy );
+
+    float color = 0.0;
+    color += sin( position.x * cos( iTime / 15.0 ) * 80.0 ) + cos( position.y * cos( iTime / 15.0 ) * 10.0 );
+    color += sin( position.y * sin( iTime / 10.0 ) * 40.0 ) + cos( position.x * sin( iTime / 25.0 ) * 40.0 );
+    color += sin( position.x * sin( iTime / 5.0 ) * 10.0 ) + sin( position.y * sin( iTime / 35.0 ) * 80.0 );
+    color *= sin( iTime / 10.0 ) * 0.5;
+
+    fragColor = vec4( vec3( color, color * 0.5, sin( color + iTime / 3.0 ) * 0.75 ), 1.0 );
+}
diff --git a/shady.sh b/shady.sh
new file mode 100755
index 0000000..df17a4f
--- /dev/null
+++ b/shady.sh
@@ -0,0 +1,8 @@
+#!/bin/bash
+
+shaderfile="$(shuf -n1 -e shaders/*)"
+
+
+shady -i "${shaderfile}" -ofmt rgb24 -g "${1}x${2}" -f "${3:-20}" -rt
+
+exit 0