scripts/modules/bl_keymap_utils/keymap_hierarchy.py

@@ -204,6 +204,9 @@ _km_hierarchy = [
         ('Grease Pencil Stroke Sculpt (Clone)', 'EMPTY', 'WINDOW', []),
         ('Grease Pencil Stroke Weight Mode', 'EMPTY', 'WINDOW', []),
         ('Grease Pencil Stroke Weight (Draw)', 'EMPTY', 'WINDOW', []),
+        ('Grease Pencil Stroke Weight (Blur)', 'EMPTY', 'WINDOW', []),
+        ('Grease Pencil Stroke Weight (Average)', 'EMPTY', 'WINDOW', []),
+        ('Grease Pencil Stroke Weight (Smear)', 'EMPTY', 'WINDOW', []),
         ('Grease Pencil Stroke Vertex Mode', 'EMPTY', 'WINDOW', []),
         ('Grease Pencil Stroke Vertex (Draw)', 'EMPTY', 'WINDOW', []),
         ('Grease Pencil Stroke Vertex (Blur)', 'EMPTY', 'WINDOW', []),

scripts/presets/keyconfig/keymap_data/blender_default.py

@@ -4178,6 +4178,9 @@ def km_grease_pencil_stroke_weight_mode(params):
         # Brush size
         ("wm.radial_control", {"type": 'F', "value": 'PRESS'},
          {"properties": [("data_path_primary", 'tool_settings.gpencil_weight_paint.brush.size')]}),
+        # Brush weight
+        ("wm.radial_control", {"type": 'F', "value": 'PRESS', "ctrl": True},
+         {"properties": [("data_path_primary", 'tool_settings.gpencil_weight_paint.brush.weight')]}),
         # Increase/Decrease brush size
         ("brush.scale_size", {"type": 'LEFT_BRACKET', "value": 'PRESS', "repeat": True},
          {"properties": [("scalar", 0.9)]}),
@@ -4197,6 +4200,10 @@ def km_grease_pencil_stroke_weight_mode(params):
         op_menu("VIEW3D_MT_gpencil_animation", {"type": 'I', "value": 'PRESS'}),
         # Context menu
         *_template_items_context_panel("VIEW3D_PT_gpencil_weight_context_menu", params.context_menu_event),
+        # Toggle Add/Subtract for weight draw tool
+        ("gpencil.weight_toggle_direction", {"type": 'D', "value": 'PRESS'}, None),
+        # Weight sample
+        ("gpencil.weight_sample", {"type": params.action_mouse, "value": 'PRESS', "ctrl": True}, None),
     ])
 
     if params.select_mouse == 'LEFTMOUSE':
@@ -4220,6 +4227,59 @@ def km_grease_pencil_stroke_weight_draw(_params):
         # Draw
         ("gpencil.weight_paint", {"type": 'LEFTMOUSE', "value": 'PRESS'},
          {"properties": [("wait_for_input", False)]}),
+        ("gpencil.weight_paint", {"type": 'LEFTMOUSE', "value": 'PRESS', "ctrl": True},
+         {"properties": [("wait_for_input", False)]}),
+    ])
+
+    return keymap
+
+
+def km_grease_pencil_stroke_weight_blur(_params):
+    items = []
+    keymap = (
+        "Grease Pencil Stroke Weight (Blur)",
+        {"space_type": 'EMPTY', "region_type": 'WINDOW'},
+        {"items": items},
+    )
+
+    items.extend([
+        # Blur
+        ("gpencil.weight_paint", {"type": 'LEFTMOUSE', "value": 'PRESS'},
+         {"properties": [("wait_for_input", False)]}),
+    ])
+
+    return keymap
+
+
+def km_grease_pencil_stroke_weight_average(_params):
+    items = []
+    keymap = (
+        "Grease Pencil Stroke Weight (Average)",
+        {"space_type": 'EMPTY', "region_type": 'WINDOW'},
+        {"items": items},
+    )
+
+    items.extend([
+        # Average
+        ("gpencil.weight_paint", {"type": 'LEFTMOUSE', "value": 'PRESS'},
+         {"properties": [("wait_for_input", False)]}),
+    ])
+
+    return keymap
+
+
+def km_grease_pencil_stroke_weight_smear(_params):
+    items = []
+    keymap = (
+        "Grease Pencil Stroke Weight (Smear)",
+        {"space_type": 'EMPTY', "region_type": 'WINDOW'},
+        {"items": items},
+    )
+
+    items.extend([
+        # Smear
+        ("gpencil.weight_paint", {"type": 'LEFTMOUSE', "value": 'PRESS'},
+         {"properties": [("wait_for_input", False)]}),
     ])
 
     return keymap
@@ -8115,6 +8175,9 @@ def generate_keymaps(params=None):
         km_grease_pencil_stroke_sculpt_clone(params),
         km_grease_pencil_stroke_weight_mode(params),
         km_grease_pencil_stroke_weight_draw(params),
+        km_grease_pencil_stroke_weight_blur(params),
+        km_grease_pencil_stroke_weight_average(params),
+        km_grease_pencil_stroke_weight_smear(params),
         km_grease_pencil_stroke_vertex_mode(params),
         km_grease_pencil_stroke_vertex_draw(params),
         km_grease_pencil_stroke_vertex_blur(params),

scripts/presets/keyconfig/keymap_data/industry_compatible_data.py

@@ -2777,6 +2777,56 @@ def km_grease_pencil_stroke_weight_draw(_params):
         {"items": items},
     )
 
+    items.extend([
+        ("gpencil.weight_paint", {"type": 'LEFTMOUSE', "value": 'PRESS'},
+         {"properties": [("wait_for_input", False)]}),
+        ("gpencil.weight_paint", {"type": 'LEFTMOUSE', "value": 'PRESS', "ctrl": True},
+         {"properties": [("wait_for_input", False)]}),
+    ])
+
+    return keymap
+
+
+def km_grease_pencil_stroke_weight_blur(_params):
+    items = []
+    keymap = (
+        "Grease Pencil Stroke Weight (Blur)",
+        {"space_type": 'EMPTY', "region_type": 'WINDOW'},
+        {"items": items},
+    )
+
+    items.extend([
+        ("gpencil.weight_paint", {"type": 'LEFTMOUSE', "value": 'PRESS'},
+         {"properties": [("wait_for_input", False)]}),
+    ])
+
+    return keymap
+
+
+def km_grease_pencil_stroke_weight_average(_params):
+    items = []
+    keymap = (
+        "Grease Pencil Stroke Weight (Average)",
+        {"space_type": 'EMPTY', "region_type": 'WINDOW'},
+        {"items": items},
+    )
+
+    items.extend([
+        ("gpencil.weight_paint", {"type": 'LEFTMOUSE', "value": 'PRESS'},
+         {"properties": [("wait_for_input", False)]}),
+    ])
+
+    return keymap
+
+
+def km_grease_pencil_stroke_weight_smear(_params):
+    items = []
+    keymap = (
+        "Grease Pencil Stroke Weight (Smear)",
+        {"space_type": 'EMPTY', "region_type": 'WINDOW'},
+        {"items": items},
+    )
+
     items.extend([
         ("gpencil.weight_paint", {"type": 'LEFTMOUSE', "value": 'PRESS'},
          {"properties": [("wait_for_input", False)]}),
@@ -4195,6 +4245,9 @@ def generate_keymaps_impl(params=None):
         km_grease_pencil_stroke_sculpt_clone(params),
         km_grease_pencil_stroke_weight_mode(params),
         km_grease_pencil_stroke_weight_draw(params),
+        km_grease_pencil_stroke_weight_blur(params),
+        km_grease_pencil_stroke_weight_average(params),
+        km_grease_pencil_stroke_weight_smear(params),
         km_grease_pencil_stroke_vertex_mode(params),
         km_grease_pencil_stroke_vertex_draw(params),
         km_grease_pencil_stroke_vertex_blur(params),

scripts/startup/bl_ui/properties_paint_common.py

@@ -1415,7 +1415,11 @@ def brush_basic_gpencil_weight_settings(layout, _context, brush, *, compact=Fals
     row.prop(brush, "strength", slider=True)
     row.prop(brush, "use_pressure_strength", text="")
     
-    layout.prop(brush, "weight", slider=True)
+    if brush.gpencil_weight_tool in {'WEIGHT'}:
+        layout.prop(brush, "weight", slider=True)
+        
+        gp_settings = brush.gpencil_settings
+        layout.prop(gp_settings, "direction", expand=True, text="" if compact else "Direction")
 
 
 def brush_basic_gpencil_vertex_settings(layout, _context, brush, *, compact=False):

scripts/startup/bl_ui/space_toolsystem_toolbar.py

@@ -68,6 +68,7 @@ def generate_from_enum_ex(
                 dict(
                     idname=idname_prefix + name,
                     label=name,
+                    description=enum.description,
                     icon=icon,
                     cursor=cursor,
                     data_block=idname,

scripts/startup/bl_ui/space_view3d.py

@@ -8,6 +8,7 @@ from bpy.types import (
 from bl_ui.properties_paint_common import (
     UnifiedPaintPanel,
     brush_basic_texpaint_settings,
+    brush_basic_gpencil_weight_settings,
 )
 from bl_ui.properties_grease_pencil_common import (
     AnnotationDataPanel,
@@ -414,11 +415,13 @@ class _draw_tool_settings_context_mode:
         paint = context.tool_settings.gpencil_weight_paint
         brush = paint.brush
         
-        from bl_ui.properties_paint_common import (
+        layout.template_ID_preview(paint, "brush", rows=3, cols=8, hide_buttons=True)
-            brush_basic_gpencil_weight_settings,
+        
-        )
         brush_basic_gpencil_weight_settings(layout, context, brush, compact=True)
         
+        layout.popover("VIEW3D_PT_tools_grease_pencil_weight_options", text="Options")
+        layout.popover("VIEW3D_PT_tools_grease_pencil_brush_weight_falloff", text="Falloff")
+
         return True
 
     @staticmethod
@@ -7662,12 +7665,10 @@ class VIEW3D_PT_gpencil_weight_context_menu(Panel):
         tool_settings = context.tool_settings
         settings = tool_settings.gpencil_weight_paint
         brush = settings.brush
-
         layout = self.layout
         
-        layout.prop(brush, "size", slider=True)
+        # Weight settings
-        layout.prop(brush, "strength")
+        brush_basic_gpencil_weight_settings(layout, context, brush)
-        layout.prop(brush, "weight")
 
         # Layers
         draw_gpencil_layer_active(context, layout)

scripts/startup/bl_ui/space_view3d_toolbar.py

@@ -2021,6 +2021,9 @@ class VIEW3D_PT_tools_grease_pencil_weight_paint_settings(Panel, View3DPanel, Gr
     bl_label = "Brush Settings"
 
     def draw(self, context):
+        if self.is_popover:
+            return
+            
         layout = self.layout
         layout.use_property_split = True
         layout.use_property_decorate = False
@@ -2029,15 +2032,15 @@ class VIEW3D_PT_tools_grease_pencil_weight_paint_settings(Panel, View3DPanel, Gr
         settings = tool_settings.gpencil_weight_paint
         brush = settings.brush
 
-        if not self.is_popover:
+        from bl_ui.properties_paint_common import (
-            from bl_ui.properties_paint_common import (
+            brush_basic_gpencil_weight_settings,
-                brush_basic_gpencil_weight_settings,
+        )
-            )
+        brush_basic_gpencil_weight_settings(layout, context, brush)
-            brush_basic_gpencil_weight_settings(layout, context, brush)
 
 
 class VIEW3D_PT_tools_grease_pencil_brush_weight_falloff(GreasePencilBrushFalloff, Panel, View3DPaintPanel):
     bl_context = ".greasepencil_weight"
+    bl_parent_id = 'VIEW3D_PT_tools_grease_pencil_weight_paint_settings'
     bl_label = "Falloff"
     bl_options = {'DEFAULT_CLOSED'}
 
@@ -2049,6 +2052,20 @@ class VIEW3D_PT_tools_grease_pencil_brush_weight_falloff(GreasePencilBrushFallof
         return (brush and brush.curve)
 
 
+class VIEW3D_PT_tools_grease_pencil_weight_options(Panel, View3DPanel, GreasePencilWeightPanel):
+    bl_label = "Options"
+    bl_options = {'DEFAULT_CLOSED'}
+    
+    def draw(self, context):
+        layout = self.layout
+        layout.use_property_split = True
+        layout.use_property_decorate = False
+        tool_settings = context.scene.tool_settings
+        
+        col = layout.column()
+        col.prop(tool_settings, "use_auto_normalize", text="Auto Normalize")
+
+
 # Grease Pencil vertex painting tools
 class GreasePencilVertexPanel:
     bl_context = ".greasepencil_vertex"
@@ -2425,6 +2442,7 @@ classes = (
     VIEW3D_PT_tools_grease_pencil_sculpt_appearance,
     VIEW3D_PT_tools_grease_pencil_weight_paint_select,
     VIEW3D_PT_tools_grease_pencil_weight_paint_settings,
+    VIEW3D_PT_tools_grease_pencil_weight_options,
     VIEW3D_PT_tools_grease_pencil_weight_appearance,
     VIEW3D_PT_tools_grease_pencil_vertex_paint_select,
     VIEW3D_PT_tools_grease_pencil_vertex_paint_settings,

source/blender/blenkernel/intern/brush.cc

@@ -1276,14 +1276,57 @@ void BKE_gpencil_brush_preset_set(Main *bmain, Brush *brush, const short type)
 
       break;
     }
-    case GP_BRUSH_PRESET_DRAW_WEIGHT: {
+    case GP_BRUSH_PRESET_WEIGHT_DRAW: {
       brush->gpencil_settings->icon_id = GP_BRUSH_ICON_GPBRUSH_WEIGHT;
       brush->gpencil_weight_tool = GPWEIGHT_TOOL_DRAW;
 
       brush->size = 25.0f;
       brush->gpencil_settings->flag |= GP_BRUSH_USE_PRESSURE;
 
-      brush->gpencil_settings->draw_strength = 0.8f;
+      brush->alpha = 0.3f;
+      brush->gpencil_settings->draw_strength = 0.3f;
+      brush->gpencil_settings->flag |= GP_BRUSH_USE_STRENGTH_PRESSURE;
+      brush->gpencil_settings->sculpt_mode_flag |= GP_SCULPT_FLAGMODE_APPLY_POSITION;
+
+      break;
+    }
+    case GP_BRUSH_PRESET_WEIGHT_BLUR: {
+      brush->gpencil_settings->icon_id = GP_BRUSH_ICON_VERTEX_BLUR;
+      brush->gpencil_weight_tool = GPWEIGHT_TOOL_BLUR;
+
+      brush->size = 50.0f;
+      brush->gpencil_settings->flag |= GP_BRUSH_USE_PRESSURE;
+
+      brush->alpha = 0.3f;
+      brush->gpencil_settings->draw_strength = 0.3f;
+      brush->gpencil_settings->flag |= GP_BRUSH_USE_STRENGTH_PRESSURE;
+      brush->gpencil_settings->sculpt_mode_flag |= GP_SCULPT_FLAGMODE_APPLY_POSITION;
+
+      break;
+    }
+    case GP_BRUSH_PRESET_WEIGHT_AVERAGE: {
+      brush->gpencil_settings->icon_id = GP_BRUSH_ICON_VERTEX_BLUR;
+      brush->gpencil_weight_tool = GPWEIGHT_TOOL_AVERAGE;
+
+      brush->size = 50.0f;
+      brush->gpencil_settings->flag |= GP_BRUSH_USE_PRESSURE;
+
+      brush->alpha = 0.3f;
+      brush->gpencil_settings->draw_strength = 0.3f;
+      brush->gpencil_settings->flag |= GP_BRUSH_USE_STRENGTH_PRESSURE;
+      brush->gpencil_settings->sculpt_mode_flag |= GP_SCULPT_FLAGMODE_APPLY_POSITION;
+
+      break;
+    }
+    case GP_BRUSH_PRESET_WEIGHT_SMEAR: {
+      brush->gpencil_settings->icon_id = GP_BRUSH_ICON_VERTEX_BLUR;
+      brush->gpencil_weight_tool = GPWEIGHT_TOOL_SMEAR;
+
+      brush->size = 50.0f;
+      brush->gpencil_settings->flag |= GP_BRUSH_USE_PRESSURE;
+
+      brush->alpha = 0.3f;
+      brush->gpencil_settings->draw_strength = 0.3f;
       brush->gpencil_settings->flag |= GP_BRUSH_USE_STRENGTH_PRESSURE;
       brush->gpencil_settings->sculpt_mode_flag |= GP_SCULPT_FLAGMODE_APPLY_POSITION;
 
@@ -1569,13 +1612,32 @@ void BKE_brush_gpencil_weight_presets(Main *bmain, ToolSettings *ts, const bool
   Paint *weightpaint = &ts->gp_weightpaint->paint;
   Brush *brush_prev = weightpaint->brush;
   Brush *brush, *deft_weight;
-  /* Vertex Draw brush. */
+
-  brush = gpencil_brush_ensure(bmain, ts, "Draw Weight", OB_MODE_WEIGHT_GPENCIL, &r_new);
+  /* Weight Draw brush. */
+  brush = gpencil_brush_ensure(bmain, ts, "Weight Draw", OB_MODE_WEIGHT_GPENCIL, &r_new);
   if ((reset) || (r_new)) {
-    BKE_gpencil_brush_preset_set(bmain, brush, GP_BRUSH_PRESET_DRAW_WEIGHT);
+    BKE_gpencil_brush_preset_set(bmain, brush, GP_BRUSH_PRESET_WEIGHT_DRAW);
   }
   deft_weight = brush; /* save default brush. */
 
+  /* Weight Blur brush. */
+  brush = gpencil_brush_ensure(bmain, ts, "Weight Blur", OB_MODE_WEIGHT_GPENCIL, &r_new);
+  if ((reset) || (r_new)) {
+    BKE_gpencil_brush_preset_set(bmain, brush, GP_BRUSH_PRESET_WEIGHT_BLUR);
+  }
+
+  /* Weight Average brush. */
+  brush = gpencil_brush_ensure(bmain, ts, "Weight Average", OB_MODE_WEIGHT_GPENCIL, &r_new);
+  if ((reset) || (r_new)) {
+    BKE_gpencil_brush_preset_set(bmain, brush, GP_BRUSH_PRESET_WEIGHT_AVERAGE);
+  }
+
+  /* Weight Smear brush. */
+  brush = gpencil_brush_ensure(bmain, ts, "Weight Smear", OB_MODE_WEIGHT_GPENCIL, &r_new);
+  if ((reset) || (r_new)) {
+    BKE_gpencil_brush_preset_set(bmain, brush, GP_BRUSH_PRESET_WEIGHT_SMEAR);
+  }
+
   /* Set default brush. */
   if (reset || brush_prev == nullptr) {
     BKE_paint_brush_set(weightpaint, deft_weight);

source/blender/blenloader/intern/versioning_300.cc

@@ -4305,6 +4305,9 @@ void blo_do_versions_300(FileData *fd, Library * /*lib*/, Main *bmain)
                                             ARRAY_SIZE(tool_replace_table));
       }
     }
+
+    /* Rename Grease Pencil weight draw brush. */
+    do_versions_rename_id(bmain, ID_BR, "Draw Weight", "Weight Draw");
   }
 
   /**

source/blender/editors/datafiles/CMakeLists.txt

@@ -808,11 +808,14 @@ set_property(GLOBAL PROPERTY ICON_GEOM_NAMES
   ops.gpencil.primitive_line
   ops.gpencil.primitive_polyline
   ops.gpencil.radius
+  ops.gpencil.sculpt_average
+  ops.gpencil.sculpt_blur
   ops.gpencil.sculpt_clone
   ops.gpencil.sculpt_grab
   ops.gpencil.sculpt_pinch
   ops.gpencil.sculpt_push
   ops.gpencil.sculpt_randomize
+  ops.gpencil.sculpt_smear
   ops.gpencil.sculpt_smooth
   ops.gpencil.sculpt_strength
   ops.gpencil.sculpt_thickness

source/blender/editors/gpencil_legacy/gpencil_data.c

@@ -2079,7 +2079,7 @@ static void gpencil_brush_delete_mode_brushes(Main *bmain,
       }
 
       if (mode == CTX_MODE_WEIGHT_GPENCIL) {
-        if (preset != GP_BRUSH_PRESET_DRAW_WEIGHT) {
+        if ((preset < GP_BRUSH_PRESET_WEIGHT_DRAW) || (preset > GP_BRUSH_PRESET_WEIGHT_SMEAR)) {
           continue;
         }
         if ((brush_active) && (brush_active->gpencil_weight_tool != brush->gpencil_weight_tool)) {
@@ -2666,58 +2666,67 @@ static int gpencil_vertex_group_normalize_all_exec(bContext *C, wmOperator *op)
       continue;
     }
 
-    /* look for tot value */
+    /* Loop all points in stroke. */
-    float *tot_values = MEM_callocN(gps->totpoints * sizeof(float), __func__);
-
     for (int i = 0; i < gps->totpoints; i++) {
+      int v;
+      float sum = 0.0f;
+      float sum_lock = 0.0f;
+      float sum_unlock = 0.0f;
+
+      /* Get vertex groups and weights. */
       dvert = &gps->dvert[i];
-      for (int v = 0; v < defbase_tot; v++) {
+
+      /* Sum weights. */
+      for (v = 0; v < defbase_tot; v++) {
+        /* Get vertex group. */
         defgroup = BLI_findlink(&gpd->vertex_group_names, v);
-        /* skip NULL or locked groups */
+        if (defgroup == NULL) {
-        if ((defgroup == NULL) || (defgroup->flag & DG_LOCK_WEIGHT)) {
-          continue;
-        }
-
-        /* skip current */
-        if ((lock_active) && (v == def_nr)) {
           continue;
         }
 
+        /* Get weight in vertex group. */
         dw = BKE_defvert_find_index(dvert, v);
-        if (dw != NULL) {
+        if (dw == NULL) {
-          tot_values[i] += dw->weight;
+          continue;
+        }
+        sum += dw->weight;
+
+        /* Vertex group locked or unlocked? */
+        if ((defgroup->flag & DG_LOCK_WEIGHT) || ((lock_active) && (v == def_nr))) {
+          sum_lock += dw->weight;
+        }
+        else {
+          sum_unlock += dw->weight;
         }
       }
-    }
 
-    /* normalize weights */
+      if ((sum == 1.0f) || (sum_unlock == 0.0f)) {
-    for (int i = 0; i < gps->totpoints; i++) {
-      if (tot_values[i] == 0.0f) {
         continue;
       }
 
-      dvert = &gps->dvert[i];
+      /* Normalize weights. */
-      for (int v = 0; v < defbase_tot; v++) {
+      float fac = MAX2(0, (1.0f - sum_lock) / sum_unlock);
+
+      for (v = 0; v < defbase_tot; v++) {
+        /* Get vertex group. */
         defgroup = BLI_findlink(&gpd->vertex_group_names, v);
-        /* skip NULL or locked groups */
+        if (defgroup == NULL) {
-        if ((defgroup == NULL) || (defgroup->flag & DG_LOCK_WEIGHT)) {
-          continue;
-        }
-
-        /* skip current */
-        if ((lock_active) && (v == def_nr)) {
           continue;
         }
 
+        /* Get weight in vertex group. */
         dw = BKE_defvert_find_index(dvert, v);
-        if (dw != NULL) {
+        if (dw == NULL) {
-          dw->weight = dw->weight / tot_values[i];
+          continue;
+        }
+
+        /* Normalize in unlocked vertex groups only. */
+        if (!((defgroup->flag & DG_LOCK_WEIGHT) || ((lock_active) && (v == def_nr)))) {
+          dw->weight *= fac;
+          CLAMP(dw->weight, 0.0f, 1.0f);
         }
       }
     }
-
-    /* free temp array */
-    MEM_SAFE_FREE(tot_values);
   }
   CTX_DATA_END;
 

source/blender/editors/gpencil_legacy/gpencil_intern.h

@@ -518,6 +518,8 @@ void GPENCIL_OT_stroke_editcurve_set_handle_type(struct wmOperatorType *ot);
  */
 void GPENCIL_OT_sculpt_paint(struct wmOperatorType *ot);
 void GPENCIL_OT_weight_paint(struct wmOperatorType *ot);
+void GPENCIL_OT_weight_toggle_direction(struct wmOperatorType *ot);
+void GPENCIL_OT_weight_sample(struct wmOperatorType *ot);
 
 /* buttons editing --- */
 

source/blender/editors/gpencil_legacy/gpencil_ops.c

@@ -292,6 +292,24 @@ static bool gpencil_stroke_weightmode_draw_poll(bContext *C)
   return gpencil_stroke_weightmode_poll_with_tool(C, GPWEIGHT_TOOL_DRAW);
 }
 
+/* Poll callback for weight paint (Blur) */
+static bool gpencil_stroke_weightmode_blur_poll(bContext *C)
+{
+  return gpencil_stroke_weightmode_poll_with_tool(C, GPWEIGHT_TOOL_BLUR);
+}
+
+/* Poll callback for weight paint (Average) */
+static bool gpencil_stroke_weightmode_average_poll(bContext *C)
+{
+  return gpencil_stroke_weightmode_poll_with_tool(C, GPWEIGHT_TOOL_AVERAGE);
+}
+
+/* Poll callback for weight paint (Smear) */
+static bool gpencil_stroke_weightmode_smear_poll(bContext *C)
+{
+  return gpencil_stroke_weightmode_poll_with_tool(C, GPWEIGHT_TOOL_SMEAR);
+}
+
 /* Stroke Editing Keymap - Only when editmode is enabled */
 static void ed_keymap_gpencil_editing(wmKeyConfig *keyconf)
 {
@@ -460,6 +478,24 @@ static void ed_keymap_gpencil_weightpainting_draw(wmKeyConfig *keyconf)
   wmKeyMap *keymap = WM_keymap_ensure(keyconf, "Grease Pencil Stroke Weight (Draw)", 0, 0);
   keymap->poll = gpencil_stroke_weightmode_draw_poll;
 }
+/* keys for weight with a blur brush */
+static void ed_keymap_gpencil_weightpainting_blur(wmKeyConfig *keyconf)
+{
+  wmKeyMap *keymap = WM_keymap_ensure(keyconf, "Grease Pencil Stroke Weight (Blur)", 0, 0);
+  keymap->poll = gpencil_stroke_weightmode_blur_poll;
+}
+/* keys for weight with a average brush */
+static void ed_keymap_gpencil_weightpainting_average(wmKeyConfig *keyconf)
+{
+  wmKeyMap *keymap = WM_keymap_ensure(keyconf, "Grease Pencil Stroke Weight (Average)", 0, 0);
+  keymap->poll = gpencil_stroke_weightmode_average_poll;
+}
+/* keys for weight with a smear brush */
+static void ed_keymap_gpencil_weightpainting_smear(wmKeyConfig *keyconf)
+{
+  wmKeyMap *keymap = WM_keymap_ensure(keyconf, "Grease Pencil Stroke Weight (Smear)", 0, 0);
+  keymap->poll = gpencil_stroke_weightmode_smear_poll;
+}
 
 /* ==================== */
 
@@ -485,6 +521,9 @@ void ED_keymap_gpencil(wmKeyConfig *keyconf)
   ed_keymap_gpencil_sculptpainting_clone(keyconf);
   ed_keymap_gpencil_weightpainting(keyconf);
   ed_keymap_gpencil_weightpainting_draw(keyconf);
+  ed_keymap_gpencil_weightpainting_blur(keyconf);
+  ed_keymap_gpencil_weightpainting_average(keyconf);
+  ed_keymap_gpencil_weightpainting_smear(keyconf);
   ed_keymap_gpencil_vertexpainting(keyconf);
   ed_keymap_gpencil_vertexpainting_draw(keyconf);
   ed_keymap_gpencil_vertexpainting_blur(keyconf);
@@ -564,6 +603,8 @@ void ED_operatortypes_gpencil(void)
 
   WM_operatortype_append(GPENCIL_OT_sculpt_paint);
   WM_operatortype_append(GPENCIL_OT_weight_paint);
+  WM_operatortype_append(GPENCIL_OT_weight_toggle_direction);
+  WM_operatortype_append(GPENCIL_OT_weight_sample);
 
   /* Edit stroke editcurve */
 

source/blender/editors/interface/interface_icons.cc

@@ -2215,6 +2215,15 @@ static int ui_id_brush_get_icon(const bContext *C, ID *id)
         case GP_BRUSH_ICON_GPBRUSH_WEIGHT:
           br->id.icon_id = ICON_GPBRUSH_WEIGHT;
           break;
+        case GP_BRUSH_ICON_GPBRUSH_BLUR:
+          br->id.icon_id = ICON_BRUSH_BLUR;
+          break;
+        case GP_BRUSH_ICON_GPBRUSH_AVERAGE:
+          br->id.icon_id = ICON_BRUSH_BLUR;
+          break;
+        case GP_BRUSH_ICON_GPBRUSH_SMEAR:
+          br->id.icon_id = ICON_BRUSH_BLUR;
+          break;
         default:
           br->id.icon_id = ICON_GPBRUSH_PEN;
           break;

source/blender/editors/screen/area.cc

@@ -1845,6 +1845,18 @@ static void ed_default_handlers(
     wmKeyMap *keymap_weight_draw = WM_keymap_ensure(
         wm->defaultconf, "Grease Pencil Stroke Weight (Draw)", 0, 0);
     WM_event_add_keymap_handler(handlers, keymap_weight_draw);
+
+    wmKeyMap *keymap_weight_blur = WM_keymap_ensure(
+        wm->defaultconf, "Grease Pencil Stroke Weight (Blur)", 0, 0);
+    WM_event_add_keymap_handler(handlers, keymap_weight_blur);
+
+    wmKeyMap *keymap_weight_average = WM_keymap_ensure(
+        wm->defaultconf, "Grease Pencil Stroke Weight (Average)", 0, 0);
+    WM_event_add_keymap_handler(handlers, keymap_weight_average);
+
+    wmKeyMap *keymap_weight_smear = WM_keymap_ensure(
+        wm->defaultconf, "Grease Pencil Stroke Weight (Smear)", 0, 0);
+    WM_event_add_keymap_handler(handlers, keymap_weight_smear);
   }
 }
 

source/blender/editors/sculpt_paint/paint_ops.cc

@@ -132,7 +132,19 @@ static eGPBrush_Presets gpencil_get_brush_preset_from_tool(bToolRef *tool,
       break;
     }
     case CTX_MODE_WEIGHT_GPENCIL: {
-      return GP_BRUSH_PRESET_DRAW_WEIGHT;
+      if (STREQ(tool->runtime->data_block, "DRAW")) {
+        return GP_BRUSH_PRESET_WEIGHT_DRAW;
+      }
+      if (STREQ(tool->runtime->data_block, "BLUR")) {
+        return GP_BRUSH_PRESET_WEIGHT_BLUR;
+      }
+      if (STREQ(tool->runtime->data_block, "AVERAGE")) {
+        return GP_BRUSH_PRESET_WEIGHT_AVERAGE;
+      }
+      if (STREQ(tool->runtime->data_block, "SMEAR")) {
+        return GP_BRUSH_PRESET_WEIGHT_SMEAR;
+      }
+      break;
     }
     case CTX_MODE_VERTEX_GPENCIL: {
       if (STREQ(tool->runtime->data_block, "DRAW")) {

source/blender/editors/space_view3d/view3d_select.cc

@@ -3665,8 +3665,7 @@ static bool do_mesh_box_select(ViewContext *vc,
   }
   if (ts->selectmode & SCE_SELECT_EDGE) {
     /* Does both use_zbuf and non-use_zbuf versions (need screen cos for both) */
-    struct BoxSelectUserData_ForMeshEdge cb_data {
+    struct BoxSelectUserData_ForMeshEdge cb_data {};
-    };
     cb_data.data = &data;
     cb_data.esel = use_zbuf ? esel : nullptr;
     cb_data.backbuf_offset = use_zbuf ? DRW_select_buffer_context_offset_for_object_elem(

source/blender/makesdna/DNA_brush_enums.h

@@ -50,7 +50,10 @@ typedef enum eGPBrush_Presets {
   GP_BRUSH_PRESET_CLONE_STROKE = 208,
 
   /* Weight Paint 300-399. */
-  GP_BRUSH_PRESET_DRAW_WEIGHT = 300,
+  GP_BRUSH_PRESET_WEIGHT_DRAW = 300,
+  GP_BRUSH_PRESET_WEIGHT_BLUR = 301,
+  GP_BRUSH_PRESET_WEIGHT_AVERAGE = 302,
+  GP_BRUSH_PRESET_WEIGHT_SMEAR = 303,
 } eGPBrush_Presets;
 
 /* BrushGpencilSettings->flag */
@@ -187,6 +190,9 @@ typedef enum eGP_BrushIcons {
   GP_BRUSH_ICON_GPBRUSH_PINCH = 26,
   GP_BRUSH_ICON_GPBRUSH_CLONE = 27,
   GP_BRUSH_ICON_GPBRUSH_WEIGHT = 28,
+  GP_BRUSH_ICON_GPBRUSH_BLUR = 29,
+  GP_BRUSH_ICON_GPBRUSH_AVERAGE = 30,
+  GP_BRUSH_ICON_GPBRUSH_SMEAR = 31,
 } eGP_BrushIcons;
 
 typedef enum eBrushCurvePreset {
@@ -607,6 +613,9 @@ typedef enum eBrushGPSculptTool {
 /* BrushGpencilSettings->brush type */
 typedef enum eBrushGPWeightTool {
   GPWEIGHT_TOOL_DRAW = 0,
+  GPWEIGHT_TOOL_BLUR = 1,
+  GPWEIGHT_TOOL_AVERAGE = 2,
+  GPWEIGHT_TOOL_SMEAR = 3,
 } eBrushGPWeightTool;
 
 /* direction that the brush displaces along */

source/blender/makesrna/intern/rna_brush.c

@@ -293,7 +293,18 @@ const EnumPropertyItem rna_enum_brush_gpencil_weight_types_items[] = {
      "WEIGHT",
      ICON_GPBRUSH_WEIGHT,
      "Weight",
-     "Weight Paint for Vertex Groups"},
+     "Paint weight in active vertex group"},
+    {GPWEIGHT_TOOL_BLUR, "BLUR", ICON_BRUSH_BLUR, "Blur", "Blur weight in active vertex group"},
+    {GPWEIGHT_TOOL_AVERAGE,
+     "AVERAGE",
+     ICON_BRUSH_BLUR,
+     "Average",
+     "Average weight in active vertex group"},
+    {GPWEIGHT_TOOL_SMEAR,
+     "SMEAR",
+     ICON_BRUSH_SMEAR,
+     "Smear",
+     "Smear weight in active vertex group"},
     {0, NULL, 0, NULL, NULL},
 };
 
@@ -401,6 +412,9 @@ static EnumPropertyItem rna_enum_gpencil_brush_sculpt_icons_items[] = {
 
 static EnumPropertyItem rna_enum_gpencil_brush_weight_icons_items[] = {
     {GP_BRUSH_ICON_GPBRUSH_WEIGHT, "DRAW", ICON_GPBRUSH_WEIGHT, "Draw", ""},
+    {GP_BRUSH_ICON_GPBRUSH_BLUR, "BLUR", ICON_BRUSH_BLUR, "Blur", ""},
+    {GP_BRUSH_ICON_GPBRUSH_AVERAGE, "AVERAGE", ICON_BRUSH_BLUR, "Average", ""},
+    {GP_BRUSH_ICON_GPBRUSH_SMEAR, "SMEAR", ICON_BRUSH_BLUR, "Smear", ""},
     {0, NULL, 0, NULL, NULL},
 };
 static EnumPropertyItem rna_enum_gpencil_brush_vertex_icons_items[] = {