Fix T75910 Overlay: Face Orientation not working for "In Front" objects

3 files changed, 37 insertions, 10 deletions

diff --git a/source/blender/draw/engines/overlay/overlay_engine.c b/source/blender/draw/engines/overlay/overlay_engine.c
index a9f0b0958fd..395ea9f9a8f 100644
--- a/source/blender/draw/engines/overlay/overlay_engine.c
+++ b/source/blender/draw/engines/overlay/overlay_engine.c
@@ -482,6 +482,12 @@ static void OVERLAY_draw_scene(void *vedata)
   OVERLAY_xray_depth_infront_copy(vedata);
 
   if (DRW_state_is_fbo()) {
+    GPU_framebuffer_bind(fbl->overlay_in_front_fb);
+  }
+
+  OVERLAY_facing_infront_draw(vedata);
+
+  if (DRW_state_is_fbo()) {
     GPU_framebuffer_bind(fbl->overlay_line_in_front_fb);
   }
 
diff --git a/source/blender/draw/engines/overlay/overlay_facing.c b/source/blender/draw/engines/overlay/overlay_facing.c
index 872fa0e8796..e98181ea718 100644
--- a/source/blender/draw/engines/overlay/overlay_facing.c
+++ b/source/blender/draw/engines/overlay/overlay_facing.c
@@ -34,28 +34,41 @@ void OVERLAY_facing_cache_init(OVERLAY_Data *vedata)
   OVERLAY_PassList *psl = vedata->psl;
   OVERLAY_PrivateData *pd = vedata->stl->pd;
 
-  DRWState state = DRW_STATE_WRITE_COLOR | DRW_STATE_DEPTH_EQUAL | DRW_STATE_BLEND_ALPHA;
-  DRW_PASS_CREATE(psl->facing_ps, state | pd->clipping_state);
+  for (int i = 0; i < 2; i++) {
+    /* Non Meshes Pass (Camera, empties, lights ...) */
+    DRWState state = DRW_STATE_WRITE_COLOR | DRW_STATE_DEPTH_EQUAL | DRW_STATE_BLEND_ALPHA;
+    DRW_PASS_CREATE(psl->facing_ps[i], state | pd->clipping_state);
 
-  GPUShader *sh = OVERLAY_shader_facing();
-  pd->facing_grp = DRW_shgroup_create(sh, psl->facing_ps);
-  DRW_shgroup_uniform_block_persistent(pd->facing_grp, "globalsBlock", G_draw.block_ubo);
+    GPUShader *sh = OVERLAY_shader_facing();
+    pd->facing_grp[i] = DRW_shgroup_create(sh, psl->facing_ps[i]);
+    DRW_shgroup_uniform_block_persistent(pd->facing_grp[i], "globalsBlock", G_draw.block_ubo);
+  }
+
+  if (!pd->use_in_front) {
+    pd->facing_grp[IN_FRONT] = pd->facing_grp[NOT_IN_FRONT];
+  }
 }
 
 void OVERLAY_facing_cache_populate(OVERLAY_Data *vedata, Object *ob)
 {
   OVERLAY_PrivateData *pd = vedata->stl->pd;
 
+  if (pd->xray_enabled) {
+    return;
+  }
+
   const DRWContextState *draw_ctx = DRW_context_state_get();
   const bool use_sculpt_pbvh = BKE_sculptsession_use_pbvh_draw(ob, draw_ctx->v3d) &&
                                !DRW_state_is_image_render();
+  const bool is_xray = (ob->dtx & OB_DRAWXRAY) != 0;
+
   if (use_sculpt_pbvh) {
-    DRW_shgroup_call_sculpt(pd->facing_grp, ob, false, false, false);
+    DRW_shgroup_call_sculpt(pd->facing_grp[is_xray], ob, false, false, false);
   }
   else {
     struct GPUBatch *geom = DRW_cache_object_surface_get(ob);
     if (geom) {
-      DRW_shgroup_call(pd->facing_grp, geom, ob);
+      DRW_shgroup_call(pd->facing_grp[is_xray], geom, ob);
     }
   }
 }
@@ -64,5 +77,12 @@ void OVERLAY_facing_draw(OVERLAY_Data *vedata)
 {
   OVERLAY_PassList *psl = vedata->psl;
 
-  DRW_draw_pass(psl->facing_ps);
+  DRW_draw_pass(psl->facing_ps[NOT_IN_FRONT]);
+}
+
+void OVERLAY_facing_infront_draw(OVERLAY_Data *vedata)
+{
+  OVERLAY_PassList *psl = vedata->psl;
+
+  DRW_draw_pass(psl->facing_ps[IN_FRONT]);
 }
diff --git a/source/blender/draw/engines/overlay/overlay_private.h b/source/blender/draw/engines/overlay/overlay_private.h
index 1870d9c7516..995c9aa6b3d 100644
--- a/source/blender/draw/engines/overlay/overlay_private.h
+++ b/source/blender/draw/engines/overlay/overlay_private.h
@@ -78,7 +78,7 @@ typedef struct OVERLAY_PassList {
   DRWPass *extra_centers_ps;
   DRWPass *extra_grid_ps;
   DRWPass *gpencil_canvas_ps;
-  DRWPass *facing_ps;
+  DRWPass *facing_ps[2];
   DRWPass *grid_ps;
   DRWPass *image_background_ps;
   DRWPass *image_empties_ps;
@@ -239,7 +239,7 @@ typedef struct OVERLAY_PrivateData {
   DRWShadingGroup *edit_text_overlay_grp;
   DRWShadingGroup *edit_text_wire_grp[2];
   DRWShadingGroup *extra_grid_grp;
-  DRWShadingGroup *facing_grp;
+  DRWShadingGroup *facing_grp[2];
   DRWShadingGroup *motion_path_lines_grp;
   DRWShadingGroup *motion_path_points_grp;
   DRWShadingGroup *outlines_grp;
@@ -500,6 +500,7 @@ void OVERLAY_facing_init(OVERLAY_Data *vedata);
 void OVERLAY_facing_cache_init(OVERLAY_Data *vedata);
 void OVERLAY_facing_cache_populate(OVERLAY_Data *vedata, Object *ob);
 void OVERLAY_facing_draw(OVERLAY_Data *vedata);
+void OVERLAY_facing_infront_draw(OVERLAY_Data *vedata);
 
 void OVERLAY_grid_init(OVERLAY_Data *vedata);
 void OVERLAY_grid_cache_init(OVERLAY_Data *vedata);