DRW: Support wire overlay clipping

1 files changed, 32 insertions, 9 deletions

diff --git a/source/blender/draw/modes/shaders/overlay_face_wireframe_geom.glsl b/source/blender/draw/modes/shaders/overlay_face_wireframe_geom.glsl
index 9249b29436b..2f3acc2a050 100644
--- a/source/blender/draw/modes/shaders/overlay_face_wireframe_geom.glsl
+++ b/source/blender/draw/modes/shaders/overlay_face_wireframe_geom.glsl
@@ -8,6 +8,10 @@ layout(line_strip, max_vertices = 6) out;
 layout(triangle_strip, max_vertices = 3) out;
 #endif
 
+#ifdef USE_WORLD_CLIP_PLANES
+uniform int  WorldClipPlanesLen;
+#endif
+
 in float facing_g[];
 in float edgeSharpness_g[];
 
@@ -17,25 +21,44 @@ out vec3 barycentric;
 flat out vec3 edgeSharpness;
 #endif
 
+void vert_from_gl_in(int v)
+{
+	gl_Position = gl_in[v].gl_Position;
+#ifdef USE_WORLD_CLIP_PLANES
+	for (int i = 0; i < WorldClipPlanesLen; i++) {
+		gl_ClipDistance[i] = gl_in[v].gl_ClipDistance[i];
+	}
+#endif
+}
+
 void main(void)
 {
 #ifdef SELECT_EDGES
 	const float edge_select_threshold = 0.3;
 	if (edgeSharpness_g[0] > edge_select_threshold) {
-		gl_Position = gl_in[0].gl_Position; EmitVertex();
-		gl_Position = gl_in[1].gl_Position; EmitVertex();
+		vert_from_gl_in(0);
+		EmitVertex();
+		vert_from_gl_in(1);
+		EmitVertex();
+
 		EndPrimitive();
 	}
 
 	if (edgeSharpness_g[1] > edge_select_threshold) {
-		gl_Position = gl_in[1].gl_Position; EmitVertex();
-		gl_Position = gl_in[2].gl_Position; EmitVertex();
+		vert_from_gl_in(1);
+		EmitVertex();
+		vert_from_gl_in(2);
+		EmitVertex();
+
 		EndPrimitive();
 	}
 
 	if (edgeSharpness_g[2] > edge_select_threshold) {
-		gl_Position = gl_in[2].gl_Position; EmitVertex();
-		gl_Position = gl_in[0].gl_Position; EmitVertex();
+		vert_from_gl_in(2);
+		EmitVertex();
+		vert_from_gl_in(0);
+		EmitVertex();
+
 		EndPrimitive();
 	}
 #else
@@ -50,17 +73,17 @@ void main(void)
 	edgeSharpness = vec3(1.0);
 
 	barycentric = vec3(1.0, 0.0, 0.0);
-	gl_Position = gl_in[0].gl_Position;
+	vert_from_gl_in(0);
 	facing = facing_g[0];
 	EmitVertex();
 
 	barycentric = vec3(0.0, 1.0, 0.0);
-	gl_Position = gl_in[1].gl_Position;
+	vert_from_gl_in(1);
 	facing = facing_g[1];
 	EmitVertex();
 
 	barycentric = vec3(0.0, 0.0, 1.0);
-	gl_Position = gl_in[2].gl_Position;
+	vert_from_gl_in(2);
 	facing = facing_g[2];
 	EmitVertex();
 	EndPrimitive();