minimal example of 15ms lag

resources/shaders/color-passthrough.vertex

@@ -1,7 +1,10 @@
 #version 450
+
+// These come in from the vertex definition
 layout(location = 0) in vec2 position;
 layout(location = 1) in vec4 color;
 
+// These are made up in the shader themselves
 layout(location = 0) out vec4 out_color;
 
 void main() {