Commit: 4fe5a105f6da5131396f93658389103475d89b09
Author: Sybren A. Stüvel
Date:   Wed May 9 17:37:54 2018 +0200
Branches: blender2.8
https://developer.blender.org/rB4fe5a105f6da5131396f93658389103475d89b09

Fix bad pointer cast when modifier is used on non-mesh object

===================================================================

M       source/blender/modifiers/intern/MOD_armature.c
M       source/blender/modifiers/intern/MOD_cast.c
M       source/blender/modifiers/intern/MOD_curve.c
M       source/blender/modifiers/intern/MOD_displace.c
M       source/blender/modifiers/intern/MOD_hook.c
M       source/blender/modifiers/intern/MOD_lattice.c
M       source/blender/modifiers/intern/MOD_simpledeform.c
M       source/blender/modifiers/intern/MOD_util.c

===================================================================

diff --git a/source/blender/modifiers/intern/MOD_armature.c 
b/source/blender/modifiers/intern/MOD_armature.c
index fc077a4ca61..26fe2ff2e4c 100644
--- a/source/blender/modifiers/intern/MOD_armature.c
+++ b/source/blender/modifiers/intern/MOD_armature.c
@@ -135,11 +135,7 @@ static void deformVertsEM(
         Mesh *mesh, float (*vertexCos)[3], int numVerts)
 {
        ArmatureModifierData *amd = (ArmatureModifierData *) md;
-       Mesh *mesh_src = mesh;
-
-       if (!mesh) {
-               mesh_src = BKE_bmesh_to_mesh_nomain(em->bm, &(struct 
BMeshToMeshParams){0});
-       }
+       Mesh *mesh_src = get_mesh(ctx->object, em, mesh, NULL, false, false);
 
        modifier_vgroup_cache(md, vertexCos); /* if next modifier needs 
original vertices */
 
@@ -152,7 +148,7 @@ static void deformVertsEM(
                amd->prevCos = NULL;
        }
 
-       if (!mesh) {
+       if (mesh_src != mesh) {
                BKE_id_free(NULL, mesh_src);
        }
 }
@@ -163,16 +159,12 @@ static void deformMatricesEM(
         float (*defMats)[3][3], int numVerts)
 {
        ArmatureModifierData *amd = (ArmatureModifierData *) md;
-       Mesh *mesh_src = mesh;
-
-       if (!mesh) {
-               mesh_src = BKE_bmesh_to_mesh_nomain(em->bm, &(struct 
BMeshToMeshParams){0});
-       }
+       Mesh *mesh_src = get_mesh(ctx->object, em, mesh, NULL, false, false);
 
        armature_deform_verts(amd->object, ctx->object, mesh_src, vertexCos, 
defMats, numVerts,
                              amd->deformflag, NULL, amd->defgrp_name);
 
-       if (!mesh) {
+       if (mesh_src != mesh) {
                BKE_id_free(NULL, mesh_src);
        }
 }
@@ -181,10 +173,14 @@ static void deformMatrices(ModifierData *md, const 
ModifierEvalContext *ctx, Mes
                            float (*vertexCos)[3], float (*defMats)[3][3], int 
numVerts)
 {
        ArmatureModifierData *amd = (ArmatureModifierData *) md;
-       Mesh *mesh_src = mesh ? mesh : ctx->object->data;
+       Mesh *mesh_src = get_mesh(ctx->object, NULL, mesh, NULL, false, false);
 
        armature_deform_verts(amd->object, ctx->object, mesh_src, vertexCos, 
defMats, numVerts,
                              amd->deformflag, NULL, amd->defgrp_name);
+
+       if (mesh_src != mesh) {
+               BKE_id_free(NULL, mesh_src);
+       }
 }
 
 ModifierTypeInfo modifierType_Armature = {
diff --git a/source/blender/modifiers/intern/MOD_cast.c 
b/source/blender/modifiers/intern/MOD_cast.c
index a2283fd66e9..2eee77c4dd7 100644
--- a/source/blender/modifiers/intern/MOD_cast.c
+++ b/source/blender/modifiers/intern/MOD_cast.c
@@ -428,12 +428,7 @@ static void deformVerts(ModifierData *md, const 
ModifierEvalContext *ctx,
                         int numVerts)
 {
        CastModifierData *cmd = (CastModifierData *)md;
-
-       Mesh *mesh_src = mesh;
-
-       if (mesh_src == NULL) {
-               mesh_src = ctx->object->data;
-       }
+       Mesh *mesh_src = get_mesh(ctx->object, NULL, mesh, NULL, false, false);
 
        BLI_assert(mesh_src->totvert == numVerts);
 
@@ -443,6 +438,10 @@ static void deformVerts(ModifierData *md, const 
ModifierEvalContext *ctx,
        else { /* MOD_CAST_TYPE_SPHERE or MOD_CAST_TYPE_CYLINDER */
                sphere_do(cmd, ctx->object, mesh_src, vertexCos, numVerts);
        }
+
+       if (mesh_src != mesh) {
+               BKE_id_free(NULL, mesh_src);
+       }
 }
 
 static void deformVertsEM(
@@ -451,12 +450,7 @@ static void deformVertsEM(
         Mesh *mesh, float (*vertexCos)[3], int numVerts)
 {
        CastModifierData *cmd = (CastModifierData *)md;
-
-       Mesh *mesh_src = mesh;
-
-       if (mesh_src == NULL) {
-               mesh_src = BKE_bmesh_to_mesh_nomain(editData->bm, &(struct 
BMeshToMeshParams){0});
-       }
+       Mesh *mesh_src = get_mesh(ctx->object, editData, mesh, NULL, false, 
false);
 
        BLI_assert(mesh_src->totvert == numVerts);
 
@@ -467,7 +461,7 @@ static void deformVertsEM(
                sphere_do(cmd, ctx->object, mesh_src, vertexCos, numVerts);
        }
 
-       if (!mesh) {
+       if (mesh_src != mesh) {
                BKE_id_free(NULL, mesh_src);
        }
 }
diff --git a/source/blender/modifiers/intern/MOD_curve.c 
b/source/blender/modifiers/intern/MOD_curve.c
index 805d27de273..deda8213a65 100644
--- a/source/blender/modifiers/intern/MOD_curve.c
+++ b/source/blender/modifiers/intern/MOD_curve.c
@@ -51,6 +51,7 @@
 #include "DEG_depsgraph_build.h"
 
 #include "MOD_modifiertypes.h"
+#include "MOD_util.h"
 
 static void initData(ModifierData *md)
 {
@@ -112,18 +113,17 @@ static void deformVerts(
         int numVerts)
 {
        CurveModifierData *cmd = (CurveModifierData *) md;
-
-       Mesh *mesh_src = mesh;
-
-       if (mesh_src == NULL) {
-               mesh_src = ctx->object->data;
-       }
+       Mesh *mesh_src = get_mesh(ctx->object, NULL, mesh, NULL, false, false);
 
        BLI_assert(mesh_src->totvert == numVerts);
 
        /* silly that defaxis and curve_deform_verts are off by 1
         * but leave for now to save having to call do_versions */
        curve_deform_verts(cmd->object, ctx->object, mesh_src, vertexCos, 
numVerts, cmd->name, cmd->defaxis - 1);
+
+       if (mesh_src != mesh) {
+               BKE_id_free(NULL, mesh_src);
+       }
 }
 
 static void deformVertsEM(
@@ -134,17 +134,13 @@ static void deformVertsEM(
         float (*vertexCos)[3],
         int numVerts)
 {
-       Mesh *mesh_src = mesh;
-
-       if (mesh_src == NULL) {
-               mesh_src = BKE_bmesh_to_mesh_nomain(em->bm, &(struct 
BMeshToMeshParams){0});
-       }
+       Mesh *mesh_src = get_mesh(ctx->object, em, mesh, NULL, false, false);
 
        BLI_assert(mesh_src->totvert == numVerts);
 
        deformVerts(md, ctx, mesh_src, vertexCos, numVerts);
 
-       if (!mesh) {
+       if (mesh_src != mesh) {
                BKE_id_free(NULL, mesh_src);
        }
 }
diff --git a/source/blender/modifiers/intern/MOD_displace.c 
b/source/blender/modifiers/intern/MOD_displace.c
index c28bb41647f..853787245a4 100644
--- a/source/blender/modifiers/intern/MOD_displace.c
+++ b/source/blender/modifiers/intern/MOD_displace.c
@@ -367,33 +367,29 @@ static void deformVerts(
         float (*vertexCos)[3],
         int numVerts)
 {
-       Mesh *mesh_src = mesh;
-
-       if (mesh_src == NULL) {
-               mesh_src = ctx->object->data;
-       }
+       Mesh *mesh_src = get_mesh(ctx->object, NULL, mesh, NULL, false, false);
 
        BLI_assert(mesh_src->totvert == numVerts);
 
        displaceModifier_do((DisplaceModifierData *)md, ctx->object, mesh_src,
                            vertexCos, numVerts);
+
+       if (mesh_src != mesh) {
+               BKE_id_free(NULL, mesh_src);
+       }
 }
 
 static void deformVertsEM(
         ModifierData *md, const ModifierEvalContext *ctx, struct BMEditMesh 
*editData,
         Mesh *mesh, float (*vertexCos)[3], int numVerts)
 {
-       Mesh *mesh_src = mesh;
-
-       if (mesh_src == NULL) {
-               mesh_src = BKE_bmesh_to_mesh_nomain(editData->bm, &(struct 
BMeshToMeshParams){0});
-       }
+       Mesh *mesh_src = get_mesh(ctx->object, editData, mesh, NULL, false, 
false);
 
        BLI_assert(mesh_src->totvert == numVerts);
 
        displaceModifier_do((DisplaceModifierData *)md, ctx->object, mesh_src, 
vertexCos, numVerts);
 
-       if (!mesh) {
+       if (mesh_src != mesh) {
                BKE_id_free(NULL, mesh_src);
        }
 }
diff --git a/source/blender/modifiers/intern/MOD_hook.c 
b/source/blender/modifiers/intern/MOD_hook.c
index 572254bbbf6..0a2510ba2be 100644
--- a/source/blender/modifiers/intern/MOD_hook.c
+++ b/source/blender/modifiers/intern/MOD_hook.c
@@ -352,9 +352,13 @@ static void deformVerts(struct ModifierData *md, const 
struct ModifierEvalContex
                         float (*vertexCos)[3], int numVerts)
 {
        HookModifierData *hmd = (HookModifierData *)md;
-       Mesh *mesh_src = mesh ? mesh : ctx->object->data;
+       Mesh *mesh_src = get_mesh(ctx->object, NULL, mesh, NULL, false, false);
 
        deformVerts_do(hmd, ctx->object, mesh_src, vertexCos, numVerts);
+
+       if (mesh_src != mesh) {
+               BKE_id_free(NULL, mesh_src);
+       }
 }
 
 static void deformVertsEM(struct ModifierData *md, const struct 
ModifierEvalContext *ctx,
@@ -362,10 +366,7 @@ static void deformVertsEM(struct ModifierData *md, const 
struct ModifierEvalCont
                           struct Mesh *mesh, float (*vertexCos)[3], int 
numVerts)
 {
        HookModifierData *hmd = (HookModifierData *)md;
-       Mesh *mesh_src = mesh;
-       if (!mesh) {
-               mesh_src = BKE_bmesh_to_mesh_nomain(editData->bm, &(struct 
BMeshToMeshParams){0});
-       }
+       Mesh *mesh_src = get_mesh(ctx->object, editData, mesh, NULL, false, 
false);
 
        deformVerts_do(hmd, ctx->object, mesh_src, vertexCos, numVerts);
 
diff --git a/source/blender/modifiers/intern/MOD_lattice.c 
b/source/blender/modifiers/intern/MOD_lattice.c
index 548480acdd8..9487841af95 100644
--- a/source/blender/modifiers/intern/MOD_lattice.c
+++ b/source/blender/modifiers/intern/MOD_lattice.c
@@ -99,27 +99,26 @@ static void deformVerts(ModifierData *md, const 
ModifierEvalContext *ctx,
                         int numVerts)
 {
        LatticeModifierData *lmd = (LatticeModifierData *) md;
-       struct Mesh *mesh_src = mesh ? mesh : ctx->object->data;
+       struct Mesh *mesh_src = get_mesh(ctx->object, NULL, mesh, NULL, false, 
false);
 
        modifier_vgroup_cache(md, vertexCos); /* if next modifier needs 
original vertices */
 
        lattice_deform_verts(lmd->object, ctx->object, mesh_src,
                             vertexCos, numVerts, lmd->name, lmd->strength);
-}
+
+       if (mesh_src != mesh) {
+               BKE_id_free(NULL, mesh_src);
+       }}
 
 static void deformVertsEM(
         ModifierData *md, const ModifierEvalContext *ctx, struct BMEditMesh 
*em,
         struct Mesh *mesh, float (*vertexCos)[3], int numVerts)
 {
-       struct Mesh *mesh_src = mesh;
-
-       if (!mesh) {
-               mesh_src = BKE_bmesh_to_mesh_nomain(em->bm, &(struct 
BMeshToMeshParams){0});
-       }
+       struct Mesh *mesh_src = get_mesh(ctx->object, em, mesh, NULL, false, 
false);
 
        deformVerts(md, ctx, mesh_src, vertexCos, numVerts);
 
-       if (!mesh) {
+       if (mesh_src != mesh) {
                BKE_id_free(NULL, mesh_src);
        }
 }
diff --git a/source/blender/modifiers/intern/MOD_simpledeform.c 
b/source/blender/modifiers/intern/MOD_simpledeform.c
index 4e9b5b20871..f054c89ea90 100644
--- a/source/blender/modifiers/intern/MOD_simpledeform.c
+++ b/source/blender/modifiers/intern/MOD_simpledeform.c
@@ -42,6 +42,7 @@
 #include "BKE_cdderivedmesh.h"
 #include "BKE_editmesh.h"
 #include "BKE_mesh.h"
+#include "BKE_library.h"
 #include "BKE_library_query.h"
 #include "BKE_modifier.h"
 #include "BKE_deform.h"
@@ -383,8 +384,13 @@ static void deformVerts(ModifierData *md, const 
ModifierEvalContext *ctx,
                         float (*vertexCos)[3],
                         int numVerts)
 {
-       Mesh *mesh_src = mesh ? mesh : ctx->object->data;
+       Mesh *mesh_src = get_mesh(ctx->object, NULL, mesh, NULL, false, false);
+
        SimpleDeformModifier_do((SimpleDeformModifierData *)md, ctx->object, 

@@ Diff output truncated at 10240 characters. @@

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