diff --git a/openrndr-demos/src/demo/kotlin/DemoGeometryShader01.kt b/openrndr-demos/src/demo/kotlin/DemoGeometryShader01.kt
index 0c9798fc..9d6922c6 100644
--- a/openrndr-demos/src/demo/kotlin/DemoGeometryShader01.kt
+++ b/openrndr-demos/src/demo/kotlin/DemoGeometryShader01.kt
@@ -2,7 +2,6 @@ import org.openrndr.application
 import org.openrndr.color.ColorRGBa
 import org.openrndr.draw.DrawPrimitive
 import org.openrndr.draw.Shader
-import org.openrndr.draw.shadeStyle
 import org.openrndr.extras.camera.Orbital
 import org.openrndr.extras.meshgenerators.boxMesh
 import org.openrndr.resourceUrl
@@ -26,11 +25,6 @@ fun main() {
                 shader.uniform("model", drawer.model)
                 driver.drawVertexBuffer(shader, listOf(vb), DrawPrimitive.TRIANGLES, 0, vb.vertexCount)
                 shader.end()
-
-                drawer.shadeStyle = shadeStyle {
-                    vertexPreamble = "krak"
-              }
-                //drawer.vertexBuffer(vb, DrawPrimitive.TRIANGLES, 0, vb.vertexCount)
             }
         }
     }
diff --git a/openrndr-demos/src/demo/resources/shaders/gs-01.frag b/openrndr-demos/src/demo/resources/shaders/gs-01.frag
index cf332b7a..2a60498a 100644
--- a/openrndr-demos/src/demo/resources/shaders/gs-01.frag
+++ b/openrndr-demos/src/demo/resources/shaders/gs-01.frag
@@ -1,8 +1,8 @@
-#version 430 core
+#version 410 core
 
 out vec4 o_color;
 
 
 void main() {
-    o_color = v_addedProperty;
+    o_color = vec4(1.0, 0.0, 0.0, 1.0);
 }
\ No newline at end of file
diff --git a/openrndr-demos/src/demo/resources/shaders/gs-01.geom b/openrndr-demos/src/demo/resources/shaders/gs-01.geom
index b68b3cf6..422ee2e2 100644
--- a/openrndr-demos/src/demo/resources/shaders/gs-01.geom
+++ b/openrndr-demos/src/demo/resources/shaders/gs-01.geom
@@ -1,4 +1,4 @@
-#version 430 core
+#version 410 core
 
 layout (triangles) in;
 layout (triangle_strip, max_vertices = 3) out;
diff --git a/openrndr-demos/src/demo/resources/shaders/gs-01.vert b/openrndr-demos/src/demo/resources/shaders/gs-01.vert
index e53a745c..6a81c839 100644
--- a/openrndr-demos/src/demo/resources/shaders/gs-01.vert
+++ b/openrndr-demos/src/demo/resources/shaders/gs-01.vert
@@ -1,4 +1,4 @@
-#version 430 core
+#version 410 core
 
 in vec3 a_position;
 in vec3 a_normal;
diff --git a/openrndr-demos/src/demo/resources/shaders/ts-01.frag b/openrndr-demos/src/demo/resources/shaders/ts-01.frag
index eae18655..660dc5e4 100644
--- a/openrndr-demos/src/demo/resources/shaders/ts-01.frag
+++ b/openrndr-demos/src/demo/resources/shaders/ts-01.frag
@@ -1,4 +1,4 @@
-#version 430 core
+#version 410 core
 
 out vec4 o_color;
 
diff --git a/openrndr-demos/src/demo/resources/shaders/ts-01.tesc b/openrndr-demos/src/demo/resources/shaders/ts-01.tesc
index 43b682e2..e9ca834d 100644
--- a/openrndr-demos/src/demo/resources/shaders/ts-01.tesc
+++ b/openrndr-demos/src/demo/resources/shaders/ts-01.tesc
@@ -1,4 +1,4 @@
-#version 430 core
+#version 410 core
 
 layout(vertices = 4) out; // 4 points per patch
 
diff --git a/openrndr-demos/src/demo/resources/shaders/ts-01.tese b/openrndr-demos/src/demo/resources/shaders/ts-01.tese
index fdf7a038..bb107c62 100644
--- a/openrndr-demos/src/demo/resources/shaders/ts-01.tese
+++ b/openrndr-demos/src/demo/resources/shaders/ts-01.tese
@@ -1,5 +1,5 @@
 
-#version 430 core
+#version 410 core
 
 vec3 bezier2(vec3 a, vec3 b, float t) {
     return mix(a, b, t);
diff --git a/openrndr-demos/src/demo/resources/shaders/ts-01.vert b/openrndr-demos/src/demo/resources/shaders/ts-01.vert
index bbd9d98c..a5f37377 100644
--- a/openrndr-demos/src/demo/resources/shaders/ts-01.vert
+++ b/openrndr-demos/src/demo/resources/shaders/ts-01.vert
@@ -1,4 +1,4 @@
-#version 430 core
+#version 410 core
 
 in vec3 a_position;
 
diff --git a/openrndr-demos/src/demo/resources/shaders/ts-02.frag b/openrndr-demos/src/demo/resources/shaders/ts-02.frag
index eae18655..660dc5e4 100644
--- a/openrndr-demos/src/demo/resources/shaders/ts-02.frag
+++ b/openrndr-demos/src/demo/resources/shaders/ts-02.frag
@@ -1,4 +1,4 @@
-#version 430 core
+#version 410 core
 
 out vec4 o_color;
 
diff --git a/openrndr-demos/src/demo/resources/shaders/ts-02.geom b/openrndr-demos/src/demo/resources/shaders/ts-02.geom
index 24b57728..7c706234 100644
--- a/openrndr-demos/src/demo/resources/shaders/ts-02.geom
+++ b/openrndr-demos/src/demo/resources/shaders/ts-02.geom
@@ -1,4 +1,4 @@
-#version 430 core
+#version 410 core
 
 layout (lines) in;
 layout (line_strip, max_vertices = 2) out;
diff --git a/openrndr-demos/src/demo/resources/shaders/ts-02.tesc b/openrndr-demos/src/demo/resources/shaders/ts-02.tesc
index ed78fe82..0dd13870 100644
--- a/openrndr-demos/src/demo/resources/shaders/ts-02.tesc
+++ b/openrndr-demos/src/demo/resources/shaders/ts-02.tesc
@@ -1,4 +1,4 @@
-#version 430 core
+#version 410 core
 
 layout(vertices = 4) out; // 4 points per patch
 
diff --git a/openrndr-demos/src/demo/resources/shaders/ts-02.tese b/openrndr-demos/src/demo/resources/shaders/ts-02.tese
index 96cfc370..04a7e26f 100644
--- a/openrndr-demos/src/demo/resources/shaders/ts-02.tese
+++ b/openrndr-demos/src/demo/resources/shaders/ts-02.tese
@@ -1,5 +1,5 @@
 
-#version 430 core
+#version 410 core
 
 vec3 bezier2(vec3 a, vec3 b, float t) {
     return mix(a, b, t);
diff --git a/openrndr-demos/src/demo/resources/shaders/ts-02.vert b/openrndr-demos/src/demo/resources/shaders/ts-02.vert
index bbd9d98c..a5f37377 100644
--- a/openrndr-demos/src/demo/resources/shaders/ts-02.vert
+++ b/openrndr-demos/src/demo/resources/shaders/ts-02.vert
@@ -1,4 +1,4 @@
-#version 430 core
+#version 410 core
 
 in vec3 a_position;
 
diff --git a/openrndr-demos/src/demo/resources/shaders/ts-03.frag b/openrndr-demos/src/demo/resources/shaders/ts-03.frag
index 1d56f915..5604a5ff 100644
--- a/openrndr-demos/src/demo/resources/shaders/ts-03.frag
+++ b/openrndr-demos/src/demo/resources/shaders/ts-03.frag
@@ -1,4 +1,4 @@
-#version 430 core
+#version 410 core
 
 out vec4 o_color;
 
diff --git a/openrndr-demos/src/demo/resources/shaders/ts-03.geom b/openrndr-demos/src/demo/resources/shaders/ts-03.geom
index 97728fbc..3e485133 100644
--- a/openrndr-demos/src/demo/resources/shaders/ts-03.geom
+++ b/openrndr-demos/src/demo/resources/shaders/ts-03.geom
@@ -1,4 +1,4 @@
-#version 430 core
+#version 410 core
 
 layout (lines) in;
 layout (triangle_strip, max_vertices = 4) out;
diff --git a/openrndr-demos/src/demo/resources/shaders/ts-03.tesc b/openrndr-demos/src/demo/resources/shaders/ts-03.tesc
index d23e30e9..698180ce 100644
--- a/openrndr-demos/src/demo/resources/shaders/ts-03.tesc
+++ b/openrndr-demos/src/demo/resources/shaders/ts-03.tesc
@@ -1,4 +1,4 @@
-#version 430 core
+#version 410 core
 
 layout(vertices = 4) out; // 4 points per patch
 
diff --git a/openrndr-demos/src/demo/resources/shaders/ts-03.tese b/openrndr-demos/src/demo/resources/shaders/ts-03.tese
index 7ea74b8b..600844ff 100644
--- a/openrndr-demos/src/demo/resources/shaders/ts-03.tese
+++ b/openrndr-demos/src/demo/resources/shaders/ts-03.tese
@@ -1,4 +1,4 @@
-#version 430 core
+#version 410 core
 
 vec3 bezier2(vec3 a, vec3 b, float t) {
     return mix(a, b, t);
diff --git a/openrndr-demos/src/demo/resources/shaders/ts-03.vert b/openrndr-demos/src/demo/resources/shaders/ts-03.vert
index 9cafb623..44f14186 100644
--- a/openrndr-demos/src/demo/resources/shaders/ts-03.vert
+++ b/openrndr-demos/src/demo/resources/shaders/ts-03.vert
@@ -1,4 +1,4 @@
-#version 430 core
+#version 410 core
 
 in vec3 a_position;
 
diff --git a/openrndr-demos/src/demo/resources/shaders/ts-04.frag b/openrndr-demos/src/demo/resources/shaders/ts-04.frag
index 1d56f915..5604a5ff 100644
--- a/openrndr-demos/src/demo/resources/shaders/ts-04.frag
+++ b/openrndr-demos/src/demo/resources/shaders/ts-04.frag
@@ -1,4 +1,4 @@
-#version 430 core
+#version 410 core
 
 out vec4 o_color;
 
diff --git a/openrndr-demos/src/demo/resources/shaders/ts-04.geom b/openrndr-demos/src/demo/resources/shaders/ts-04.geom
index b08c0ecc..820f504f 100644
--- a/openrndr-demos/src/demo/resources/shaders/ts-04.geom
+++ b/openrndr-demos/src/demo/resources/shaders/ts-04.geom
@@ -1,4 +1,4 @@
-#version 430 core
+#version 410 core
 
 layout (lines) in;
 layout (triangle_strip, max_vertices = 4) out;
diff --git a/openrndr-demos/src/demo/resources/shaders/ts-04.tesc b/openrndr-demos/src/demo/resources/shaders/ts-04.tesc
index d23e30e9..698180ce 100644
--- a/openrndr-demos/src/demo/resources/shaders/ts-04.tesc
+++ b/openrndr-demos/src/demo/resources/shaders/ts-04.tesc
@@ -1,4 +1,4 @@
-#version 430 core
+#version 410 core
 
 layout(vertices = 4) out; // 4 points per patch
 
diff --git a/openrndr-demos/src/demo/resources/shaders/ts-04.tese b/openrndr-demos/src/demo/resources/shaders/ts-04.tese
index 7ea74b8b..600844ff 100644
--- a/openrndr-demos/src/demo/resources/shaders/ts-04.tese
+++ b/openrndr-demos/src/demo/resources/shaders/ts-04.tese
@@ -1,4 +1,4 @@
-#version 430 core
+#version 410 core
 
 vec3 bezier2(vec3 a, vec3 b, float t) {
     return mix(a, b, t);
diff --git a/openrndr-demos/src/demo/resources/shaders/ts-04.vert b/openrndr-demos/src/demo/resources/shaders/ts-04.vert
index da99b146..79a8af65 100644
--- a/openrndr-demos/src/demo/resources/shaders/ts-04.vert
+++ b/openrndr-demos/src/demo/resources/shaders/ts-04.vert
@@ -1,4 +1,4 @@
-#version 430 core
+#version 410 core
 
 #pragma import org.openrndr.extra.noise.phrases.SimplexKt.phraseSimplex3;