update

shader/panel.vert

@@ -0,0 +1,19 @@
+#version 330 core
+
+layout(location = 0) in vec3 aPos;
+layout(location = 1) in vec3 aN;
+
+uniform mat4 model;
+uniform mat4 view;
+uniform mat4 projection;
+
+out vec3 vWorldPos;
+out vec3 vWorldNormal;
+
+void main() {
+    vec4 worldPos = model * vec4(aPos, 1.0);
+    mat3 normalMat = transpose(inverse(mat3(model)));
+    vWorldPos = worldPos.xyz;
+    vWorldNormal = normalize(normalMat * aN);
+    gl_Position = projection * view * worldPos;
+}