diff --git a/source/blender/blenkernel/BKE_DerivedMesh.h b/source/blender/blenkernel/BKE_DerivedMesh.h
index 65946d7188c..3099875c145 100644
--- a/source/blender/blenkernel/BKE_DerivedMesh.h
+++ b/source/blender/blenkernel/BKE_DerivedMesh.h
@@ -566,7 +566,6 @@ void makeDerivedMesh(
         struct Depsgraph *depsgraph, struct Scene *scene, struct Object *ob, struct BMEditMesh *em,
         CustomDataMask dataMask, const bool build_shapekey_layers);
 
-void weight_to_rgb(float r_rgb[3], const float weight);
 /** Update the weight MCOL preview layer.
  * If weights are NULL, use object's active vgroup(s).
  * Else, weights must be an array of weight float values.
diff --git a/source/blender/blenkernel/BKE_deform.h b/source/blender/blenkernel/BKE_deform.h
index a20c5a4240c..a29f4197299 100644
--- a/source/blender/blenkernel/BKE_deform.h
+++ b/source/blender/blenkernel/BKE_deform.h
@@ -116,4 +116,6 @@ void BKE_defvert_extract_vgroup_to_polyweights(
         struct MDeformVert *dvert, const int defgroup, const int num_verts, struct MLoop *loops, const int num_loops,
         struct MPoly *polys, const int num_polys, float *r_weights, const bool invert_vgroup);
 
+void BKE_defvert_weight_to_rgb(float r_rgb[3], const float weight);
+
 #endif  /* __BKE_DEFORM_H__ */
diff --git a/source/blender/blenkernel/intern/DerivedMesh.c b/source/blender/blenkernel/intern/DerivedMesh.c
index a77e6ec12c7..4aee616580e 100644
--- a/source/blender/blenkernel/intern/DerivedMesh.c
+++ b/source/blender/blenkernel/intern/DerivedMesh.c
@@ -1394,39 +1394,6 @@ static void add_orco_mesh(
  * happens on enter/exit wpaint.
  */
 
-void weight_to_rgb(float r_rgb[3], const float weight)
-{
-	const float blend = ((weight / 2.0f) + 0.5f);
-
-	if (weight <= 0.25f) {    /* blue->cyan */
-		r_rgb[0] = 0.0f;
-		r_rgb[1] = blend * weight * 4.0f;
-		r_rgb[2] = blend;
-	}
-	else if (weight <= 0.50f) {  /* cyan->green */
-		r_rgb[0] = 0.0f;
-		r_rgb[1] = blend;
-		r_rgb[2] = blend * (1.0f - ((weight - 0.25f) * 4.0f));
-	}
-	else if (weight <= 0.75f) {  /* green->yellow */
-		r_rgb[0] = blend * ((weight - 0.50f) * 4.0f);
-		r_rgb[1] = blend;
-		r_rgb[2] = 0.0f;
-	}
-	else if (weight <= 1.0f) {  /* yellow->red */
-		r_rgb[0] = blend;
-		r_rgb[1] = blend * (1.0f - ((weight - 0.75f) * 4.0f));
-		r_rgb[2] = 0.0f;
-	}
-	else {
-		/* exceptional value, unclamped or nan,
-		 * avoid uninitialized memory use */
-		r_rgb[0] = 1.0f;
-		r_rgb[1] = 0.0f;
-		r_rgb[2] = 1.0f;
-	}
-}
-
 /* draw_flag's for calc_weightpaint_vert_color */
 enum {
 	/* only one of these should be set, keep first (for easy bit-shifting) */
@@ -1461,7 +1428,7 @@ static void weightpaint_color(unsigned char r_col[4], MERuntimeWeightColorInfo *
 		BKE_colorband_evaluate(dm_wcinfo->coba, input, colf);
 	}
 	else {
-		weight_to_rgb(colf, input);
+		BKE_defvert_weight_to_rgb(colf, input);
 	}
 
 	/* don't use rgb_float_to_uchar() here because
diff --git a/source/blender/blenkernel/intern/deform.c b/source/blender/blenkernel/intern/deform.c
index 2da157d5b88..d08e3643ca7 100644
--- a/source/blender/blenkernel/intern/deform.c
+++ b/source/blender/blenkernel/intern/deform.c
@@ -1293,3 +1293,43 @@ bool data_transfer_layersmapping_vgroups(
 }
 
 /** \} */
+
+/* -------------------------------------------------------------------- */
+
+/** \name Various utils & helpers.
+ * \{ */
+
+void BKE_defvert_weight_to_rgb(float r_rgb[3], const float weight)
+{
+	const float blend = ((weight / 2.0f) + 0.5f);
+
+	if (weight <= 0.25f) {    /* blue->cyan */
+		r_rgb[0] = 0.0f;
+		r_rgb[1] = blend * weight * 4.0f;
+		r_rgb[2] = blend;
+	}
+	else if (weight <= 0.50f) {  /* cyan->green */
+		r_rgb[0] = 0.0f;
+		r_rgb[1] = blend;
+		r_rgb[2] = blend * (1.0f - ((weight - 0.25f) * 4.0f));
+	}
+	else if (weight <= 0.75f) {  /* green->yellow */
+		r_rgb[0] = blend * ((weight - 0.50f) * 4.0f);
+		r_rgb[1] = blend;
+		r_rgb[2] = 0.0f;
+	}
+	else if (weight <= 1.0f) {  /* yellow->red */
+		r_rgb[0] = blend;
+		r_rgb[1] = blend * (1.0f - ((weight - 0.75f) * 4.0f));
+		r_rgb[2] = 0.0f;
+	}
+	else {
+		/* exceptional value, unclamped or nan,
+		 * avoid uninitialized memory use */
+		r_rgb[0] = 1.0f;
+		r_rgb[1] = 0.0f;
+		r_rgb[2] = 1.0f;
+	}
+}
+
+/** \} */
diff --git a/source/blender/blenkernel/intern/editderivedmesh.c b/source/blender/blenkernel/intern/editderivedmesh.c
index f5e5a37c7d7..4c2f513007a 100644
--- a/source/blender/blenkernel/intern/editderivedmesh.c
+++ b/source/blender/blenkernel/intern/editderivedmesh.c
@@ -49,6 +49,7 @@
 #include "BLI_task.h"
 
 #include "BKE_cdderivedmesh.h"
+#include "BKE_deform.h"
 #include "BKE_mesh.h"
 #include "BKE_editmesh.h"
 #include "BKE_editmesh_bvh.h"
@@ -1082,7 +1083,7 @@ static void statvis_calc_overhang(
 	/* fallback max */
 	{
 		float fcol[3];
-		weight_to_rgb(fcol, 1.0f);
+		BKE_defvert_weight_to_rgb(fcol, 1.0f);
 		rgb_float_to_uchar(col_fallback_max, fcol);
 	}
 
@@ -1096,7 +1097,7 @@ static void statvis_calc_overhang(
 			fac = (fac - min) * minmax_irange;
 			fac = 1.0f - fac;
 			CLAMP(fac, 0.0f, 1.0f);
-			weight_to_rgb(fcol, fac);
+			BKE_defvert_weight_to_rgb(fcol, fac);
 			rgb_float_to_uchar(r_face_colors[index], fcol);
 		}
 		else {
@@ -1231,7 +1232,7 @@ static void statvis_calc_thickness(
 			fac = (fac - min) * minmax_irange;
 			fac = 1.0f - fac;
 			CLAMP(fac, 0.0f, 1.0f);
-			weight_to_rgb(fcol, fac);
+			BKE_defvert_weight_to_rgb(fcol, fac);
 			rgb_float_to_uchar(r_face_colors[i], fcol);
 		}
 		else {
@@ -1270,7 +1271,7 @@ static void statvis_calc_intersect(
 	overlap = BKE_bmbvh_overlap(bmtree, bmtree, &overlap_len);
 
 	/* same for all faces */
-	weight_to_rgb(fcol, 1.0f);
+	BKE_defvert_weight_to_rgb(fcol, 1.0f);
 	rgb_float_to_uchar(col, fcol);
 
 	if (overlap) {
@@ -1357,7 +1358,7 @@ static void statvis_calc_distort(
 			float fcol[3];
 			fac = (fac - min) * minmax_irange;
 			CLAMP(fac, 0.0f, 1.0f);
-			weight_to_rgb(fcol, fac);
+			BKE_defvert_weight_to_rgb(fcol, fac);
 			rgb_float_to_uchar(r_face_colors[index], fcol);
 		}
 		else {
@@ -1407,7 +1408,7 @@ static void statvis_calc_sharp(
 			float fcol[3];
 			fac = (fac - min) * minmax_irange;
 			CLAMP(fac, 0.0f, 1.0f);
-			weight_to_rgb(fcol, fac);
+			BKE_defvert_weight_to_rgb(fcol, fac);
 			rgb_float_to_uchar(r_vert_colors[i], fcol);
 		}
 		else {
diff --git a/source/blender/blenkernel/intern/particle.c b/source/blender/blenkernel/intern/particle.c
index aec4d8b735a..82514f0c92d 100644
--- a/source/blender/blenkernel/intern/particle.c
+++ b/source/blender/blenkernel/intern/particle.c
@@ -2767,7 +2767,7 @@ static void psys_cache_edit_paths_iter(
 		/* selection coloring in edit mode */
 		if (use_weight) {
 			if (k == 0) {
-				weight_to_rgb(ca->col, pind.hkey[1]->weight);
+				BKE_defvert_weight_to_rgb(ca->col, pind.hkey[1]->weight);
 			}
 			else {
 				/* warning: copied from 'do_particle_interpolation' (without 'mvert' array stepping) */
@@ -2789,8 +2789,8 @@ static void psys_cache_edit_paths_iter(
 				float w1[3], w2[3];
 				keytime = (t - (*pind.ekey[0]->time)) / ((*pind.ekey[1]->time) - (*pind.ekey[0]->time));
 
-				weight_to_rgb(w1, pind.hkey[0]->weight);
-				weight_to_rgb(w2, pind.hkey[1]->weight);
+				BKE_defvert_weight_to_rgb(w1, pind.hkey[0]->weight);
+				BKE_defvert_weight_to_rgb(w2, pind.hkey[1]->weight);
 
 				interp_v3_v3v3(ca->col, w1, w2, keytime);
 			}
diff --git a/source/blender/blenkernel/intern/particle_system.c b/source/blender/blenkernel/intern/particle_system.c
index 8f94c7b3c8d..35c8761f671 100644
--- a/source/blender/blenkernel/intern/particle_system.c
+++ b/source/blender/blenkernel/intern/particle_system.c
@@ -70,7 +70,6 @@
 
 #include "BKE_animsys.h"
 #include "BKE_boids.h"
-#include "BKE_cdderivedmesh.h"
 #include "BKE_collision.h"
 #include "BKE_colortools.h"
 #include "BKE_effect.h"
@@ -81,7 +80,6 @@
 #include "BKE_particle.h"
 
 #include "BKE_collection.h"
-#include "BKE_DerivedMesh.h"
 #include "BKE_object.h"
 #include "BKE_material.h"
 #include "BKE_cloth.h"
@@ -328,7 +326,7 @@ void psys_calc_dmcache(Object *ob, Mesh *mesh_final, Mesh *mesh_original, Partic
 
 	/* CACHE LOCATIONS */
 	if (!mesh_final->runtime.deformed_only) {
-		/* Will use later to speed up subsurf/derivedmesh */
+		/* Will use later to speed up subsurf/evaluated mesh. */
 		LinkNode *node, *nodedmelem, **nodearray;
 		int totdmelem, totelem, i, *origindex, *origindex_poly = NULL;
 
diff --git a/source/blender/bmesh/intern/bmesh_mesh_conv.c b/source/blender/bmesh/intern/bmesh_mesh_conv.c
index 00bb0110e74..7e1e1c53a8f 100644
--- a/source/blender/bmesh/intern/bmesh_mesh_conv.c
+++ b/source/blender/bmesh/intern/bmesh_mesh_conv.c
@@ -550,7 +550,7 @@ BLI_INLINE void bmesh_quick_edgedraw_flag(MEdge *med, BMEdge *e)
 
 /**
  *
- * \param bmain May be NULL in case \a calc_object_remap parameter option is set.
+ * \param bmain May be NULL in case \a calc_object_remap parameter option is not set.
  */
 void BM_mesh_bm_to_me(
         Main *bmain, BMesh *bm, Mesh *me,
diff --git a/source/blender/editors/mesh/editmesh_knife.c b/source/blender/editors/mesh/editmesh_knife.c
index 2ee8918c5da..a511100ff4e 100644
--- a/source/blender/editors/mesh/editmesh_knife.c
+++ b/source/blender/editors/mesh/editmesh_knife.c
@@ -48,7 +48,7 @@
 
 #include "BLT_translation.h"
 
-#include "BKE_DerivedMesh.h"
+#include "BKE_bvhutils.h"
 #include "BKE_context.h"
 #include "BKE_editmesh.h"
 #include "BKE_editmesh_bvh.h"
diff --git a/source/blender/editors/mesh/editmesh_undo.c b/source/blender/editors/mesh/editmesh_undo.c
index 97445ebc9e0..11606840b42 100644
--- a/source/blender/editors/mesh/editmesh_undo.c
+++ b/source/blender/editors/mesh/editmesh_undo.c
@@ -27,6 +27,7 @@
 #include "CLG_log.h"
 
 #include "DNA_mesh_types.h"
+#include "DNA_meshdata_types.h"
 #include "DNA_object_types.h"
 #include "DNA_key_types.h"
 #include "DNA_layer_types.h"
@@ -35,7 +36,6 @@
 #include "BLI_array_utils.h"
 #include "BLI_alloca.h"
 
-#include "BKE_DerivedMesh.h"
 #include "BKE_context.h"
 #include "BKE_key.h"
 #include "BKE_layer.h"
diff --git a/source/blender/editors/render/render_update.c b/source/blender/editors/render/render_update.c
index a78617fde8c..97fd7295a7b 100644
--- a/source/blender/editors/render/render_update.c
+++ b/source/blender/editors/render/render_update.c
@@ -49,7 +49,6 @@
 #include "BLI_utildefines.h"
 
 #include "BKE_context.h"
-#include "BKE_DerivedMesh.h"
 #include "BKE_icons.h"
 #include "BKE_layer.h"
 #include "BKE_main.h"
diff --git a/source/blender/editors/space_image/image_ops.c b/source/blender/editors/space_image/image_ops.c
index 7fbf7889551..40311594512 100644
--- a/source/blender/editors/space_image/image_ops.c
+++ b/source/blender/editors/space_image/image_ops.c
@@ -57,7 +57,6 @@
 
 #include "BKE_colortools.h"
 #include "BKE_context.h"
-#include "BKE_DerivedMesh.h"
 #include "BKE_icons.h"
 #include "BKE_image.h"
 #include "BKE_global.h"
diff --git a/source/blender/editors/space_view3d/drawvolume.c b/source/blender/editors/space_view3d/drawvolume.c
index d90f1b16d29..c6874a663a5 100644
--- a/source/blender/editors/space_view3d/drawvolume.c
+++ b/source/blender/editors/space_view3d/drawvolume.c
@@ -40,8 +40,8 @@
 #include "BLI_utildefines.h"
 #include "BLI_math.h"
 
-#include "BKE_DerivedMesh.h"
 #include "BKE_colorband.h"
+#include "BKE_deform.h"
 #include "BKE_particle.h"
 
 #include "smoke_API.h"
@@ -685,7 +685,7 @@ static void add_needle(float (*verts)[3], float (*colors)[3], float center[3],
 	float len = len_v3(dir);
 
 	float rgb[3];
-	weight_to_rgb(rgb, len);
+	BKE_defvert_weight_to_rgb(rgb, len);
 
 	if (len != 0.0f) {
 		mul_v3_fl(dir, 1.0f / len);
@@ -725,7 +725,7 @@ static void add_streamline(float (*verts)[3], float(*colors)[3], float center[3]
 	const float len = len_v3(dir);
 
 	float rgb[3];
-	weight_to_rgb(rgb, len);
+	BKE_defvert_weight_to_rgb(rgb, len);
 
 	copy_v3_v3(colors[(*offset)], rgb);
 	copy_v3_v3(verts[(*offset)++], center);
diff --git a/source/blender/editors/space_view3d/view3d_draw_legacy.c b/source/blender/editors/space_view3d/view3d_draw_legacy.c
index 6acec568bf4..06cdba3f537 100644
--- a/source/blender/editors/space_view3d/view3d_draw_legacy.c
+++ b/source/blender/editors/space_view3d/view3d_draw_legacy.c
@@ -57,7 +57,6 @@
 #include "BKE_camera.h"
 #include "BKE_context.h"
 #include "BKE_customdata.h"
-#include "BKE_DerivedMesh.h"
 #include "BKE_image.h"
 #include "BKE_key.h"
 #include "BKE_layer.h"
diff --git a/source/blender/editors/space_view3d/view3d_intern.h b/source/blender/editors/space_view3d/view3d_intern.h
index 4eb2a016b94..8263d1d892c 100644
--- a/source/blender/editors/space_view3d/view3d_intern.h
+++ b/source/blender/editors/space_view3d/view3d_intern.h
@@ -41,7 +41,6 @@ struct Base;
 struct BoundBox;
 struct Gwn_Batch;
 struct Depsgraph;
-struct DerivedMesh;
 struct Object;
 struct SmokeDomainSettings;
 struct bAnimVizSettings;
diff --git a/source/blender/editors/transform/transform_conversions.c b/source/blender/editors/transform/transform_conversions.c
index 8462004c549..c622a50ff11 100644
--- a/source/blender/editors/transform/transform_conversions.c
+++ b/source/blender/editors/transform/transform_conversions.c
@@ -61,7 +61,6 @@
 #include "BLI_bitmap.h"
 #include "BLI_rect.h"
 
-#include "BKE_DerivedMesh.h"
 #include "BKE_action.h"
 #include "BKE_armature.h"
 #include "BKE_constraint.h"
diff --git a/source/blender/editors/uvedit/uvedit_draw.c b/source/blender/editors/uvedit/uvedit_draw.c
index 08df08dafb4..5fb328a922d 100644
--- a/source/blender/editors/uvedit/uvedit_draw.c
+++ b/source/blender/editors/uvedit/uvedit_draw.c
@@ -48,7 +48,7 @@
 #include "BLI_buffer.h"
 #include "BLI_bitmap.h"
 
-#include "BKE_DerivedMesh.h"
+#include "BKE_deform.h"
 #include "BKE_editmesh.h"
 #include "BKE_material.h"
 #include "BKE_layer.h"
@@ -277,7 +277,7 @@ static void draw_uvs_stretch(SpaceImage *sima, Scene *scene, Object *obedit, BME
 						else
 							areadiff = 1.0f - (area / uvarea);
 
-						weight_to_rgb(col, areadiff);
+						BKE_defvert_weight_to_rgb(col, areadiff);
 						immUniformColor3fv(col);
 
 						/* TODO: use editmesh tessface */
@@ -357,7 +357,7 @@ static void draw_uvs_stretch(SpaceImage *sima, Scene *scene, Object *obedit, BME
 					BM_ITER_ELEM_INDEX (l, &liter, efa, BM_LOOPS_OF_FACE, i) {
 						luv = BM_ELEM_CD_GET_VOID_P(l, cd_loop_uv_offset);
 						a = fabsf(uvang[i] - ang[i]) / (float)M_PI;
-						weight_to_rgb(col, 1.0f - pow2f(1.0f - a));
+						BKE_defvert_weight_to_rgb(col, 1.0f - pow2f(1.0f - a));
 						immAttrib3fv(color, col);
 						immVertex2fv(pos, luv->uv);
 					}
diff --git a/source/blender/modifiers/intern/MOD_particlesystem.c b/source/blender/modifiers/intern/MOD_particlesystem.c
index 784e44f5758..2d725a821db 100644
--- a/source/blender/modifiers/intern/MOD_particlesystem.c
+++ b/source/blender/modifiers/intern/MOD_particlesystem.c
@@ -41,7 +41,6 @@
 #include "BLI_utildefines.h"
 
 
-#include "BKE_cdderivedmesh.h"
 #include "BKE_editmesh.h"
 #include "BKE_mesh.h"
 #include "BKE_library.h"
@@ -218,20 +217,24 @@ static void deformVerts(
 	}
 }
 
-/* disabled particles in editmode for now, until support for proper derivedmesh
+/* disabled particles in editmode for now, until support for proper evaluated mesh
  * updates is coded */
 #if 0
 static void deformVertsEM(
-        ModifierData *md, Object *ob, EditMesh *editData,
-        DerivedMesh *derivedData, float (*vertexCos)[3], int numVerts)
+        ModifierData *md, Object *ob, BMEditMesh *editData,
+        Mesh *mesh, float (*vertexCos)[3], int numVerts)
 {
-	DerivedMesh *dm = derivedData;
+	const bool do_temp_mesh = (mesh == NULL);
+	if (do_temp_mesh) {
+		mesh = BKE_id_new_nomain(ID_ME, ((ID *)ob->data)->name);
+		BM_mesh_bm_to_me(NULL, editData->bm, mesh, &((BMeshToMeshParams){0}));
+	}
 
-	if (!derivedData) dm = CDDM_from_editmesh(editData, ob->data);
+	deformVerts(md, ob, mesh, vertexCos, numVerts);
 
-	deformVerts(md, ob, dm, vertexCos, numVerts);
-
-	if (!derivedData) dm->release(dm);
+	if (derivedData) {
+		BKE_id_free(NULL, mesh);
+	}
 }
 #endif