2 files changed, 49 insertions, 0 deletions
diff --git a/mesh_snap_utilities_line/snap_context_l/shaders/ID_color_frag.glsl b/mesh_snap_utilities_line/snap_context_l/shaders/ID_color_frag.glsl
new file mode 100644
index 00000000..3e01f7b0
--- /dev/null
+++ b/mesh_snap_utilities_line/snap_context_l/shaders/ID_color_frag.glsl
@@ -0,0 +1,24 @@
+uniform int offset;
+
+#ifdef USE_CLIP_PLANES
+uniform bool use_clip_planes;
+in vec4 clip_distance;
+#endif
+
+out uint FragColor;
+
+void main()
+{
+#ifdef USE_CLIP_PLANES
+	if (use_clip_planes &&
+	   ((clip_distance[0] < 0) ||
+	    (clip_distance[1] < 0) ||
+	    (clip_distance[2] < 0) ||
+	    (clip_distance[3] < 0)))
+	{
+		discard;
+	}
+#endif
+
+	FragColor = uint(gl_PrimitiveID + offset);
+}
diff --git a/mesh_snap_utilities_line/snap_context_l/shaders/ID_color_vert.glsl b/mesh_snap_utilities_line/snap_context_l/shaders/ID_color_vert.glsl
new file mode 100644
index 00000000..fa0afec6
--- /dev/null
+++ b/mesh_snap_utilities_line/snap_context_l/shaders/ID_color_vert.glsl
@@ -0,0 +1,25 @@
+uniform mat4 ModelViewProjectionMatrix;
+
+#ifdef USE_CLIP_PLANES
+uniform mat4 ModelViewMatrix;
+uniform bool use_clip_planes;
+uniform vec4 clip_plane[4];
+out vec4 clip_distance;
+#endif
+
+in vec3 pos;
+
+void main()
+{
+#ifdef USE_CLIP_PLANES
+	if (use_clip_planes) {
+		vec4 g_pos = ModelViewMatrix * vec4(pos, 1.0);
+
+		for (int i = 0; i != 4; i++) {
+			clip_distance[i] = dot(clip_plane[i], g_pos);
+		}
+	}
+#endif
+
+	gl_Position = ModelViewProjectionMatrix * vec4(pos, 1.0);
+}