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2aebfb596e2f2f83f103ce3c852498fa9efb92ef
test2/source/blender/modifiers/intern/MOD_displace.cc
Campbell Barton e955c94ed3 License Headers: Set copyright to "Blender Authors", add AUTHORS 
Listing the "Blender Foundation" as copyright holder implied the Blender
Foundation holds copyright to files which may include work from many
developers.

While keeping copyright on headers makes sense for isolated libraries,
Blender's own code may be refactored or moved between files in a way
that makes the per file copyright holders less meaningful.

Copyright references to the "Blender Foundation" have been replaced with
"Blender Authors", with the exception of `./extern/` since these this
contains libraries which are more isolated, any changed to license
headers there can be handled on a case-by-case basis.

Some directories in `./intern/` have also been excluded:

- `./intern/cycles/` it's own `AUTHORS` file is planned.
- `./intern/opensubdiv/`.

An "AUTHORS" file has been added, using the chromium projects authors
file as a template.

Design task: #110784

Ref !110783.
2023-08-16 00:20:26 +10:00

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/* SPDX-FileCopyrightText: 2005 Blender Authors
*
* SPDX-License-Identifier: GPL-2.0-or-later */
/** \file
* \ingroup modifiers
*/
#include "BLI_utildefines.h"
#include "BLI_math_matrix.h"
#include "BLI_math_vector.h"
#include "BLI_task.h"
#include "BLT_translation.h"
#include "DNA_defaults.h"
#include "DNA_mesh_types.h"
#include "DNA_meshdata_types.h"
#include "DNA_object_types.h"
#include "DNA_screen_types.h"
#include "BKE_context.h"
#include "BKE_customdata.h"
#include "BKE_deform.h"
#include "BKE_editmesh.h"
#include "BKE_image.h"
#include "BKE_lib_id.h"
#include "BKE_lib_query.h"
#include "BKE_mesh.hh"
#include "BKE_mesh_wrapper.hh"
#include "BKE_modifier.h"
#include "BKE_object.h"
#include "BKE_screen.h"
#include "BKE_texture.h"
#include "UI_interface.hh"
#include "UI_resources.hh"
#include "RNA_access.hh"
#include "RNA_prototypes.h"
#include "DEG_depsgraph.h"
#include "DEG_depsgraph_query.h"
#include "MEM_guardedalloc.h"
#include "MOD_ui_common.hh"
#include "MOD_util.hh"
#include "RE_texture.h"
/* Displace */
static void init_data(ModifierData *md)
{
DisplaceModifierData *dmd = (DisplaceModifierData *)md;
BLI_assert(MEMCMP_STRUCT_AFTER_IS_ZERO(dmd, modifier));
MEMCPY_STRUCT_AFTER(dmd, DNA_struct_default_get(DisplaceModifierData), modifier);
}
static void required_data_mask(ModifierData *md, CustomData_MeshMasks *r_cddata_masks)
{
DisplaceModifierData *dmd = (DisplaceModifierData *)md;
/* Ask for vertex-groups if we need them. */
if (dmd->defgrp_name[0] != '\0') {
r_cddata_masks->vmask |= CD_MASK_MDEFORMVERT;
}
/* ask for UV coordinates if we need them */
if (dmd->texmapping == MOD_DISP_MAP_UV) {
r_cddata_masks->fmask |= CD_MASK_MTFACE;
}
if (dmd->direction == MOD_DISP_DIR_CLNOR) {
r_cddata_masks->lmask |= CD_MASK_CUSTOMLOOPNORMAL;
}
}
static bool depends_on_time(Scene * /*scene*/, ModifierData *md)
{
DisplaceModifierData *dmd = (DisplaceModifierData *)md;
if (dmd->texture) {
return BKE_texture_dependsOnTime(dmd->texture);
}
return false;
}
static bool depends_on_normals(ModifierData *md)
{
DisplaceModifierData *dmd = (DisplaceModifierData *)md;
return ELEM(dmd->direction, MOD_DISP_DIR_NOR, MOD_DISP_DIR_CLNOR);
}
static void foreach_ID_link(ModifierData *md, Object *ob, IDWalkFunc walk, void *user_data)
{
DisplaceModifierData *dmd = (DisplaceModifierData *)md;
walk(user_data, ob, (ID **)&dmd->texture, IDWALK_CB_USER);
walk(user_data, ob, (ID **)&dmd->map_object, IDWALK_CB_NOP);
}
static void foreach_tex_link(ModifierData *md, Object *ob, TexWalkFunc walk, void *user_data)
{
walk(user_data, ob, md, "texture");
}
static bool is_disabled(const Scene * /*scene*/, ModifierData *md, bool /*use_render_params*/)
{
DisplaceModifierData *dmd = (DisplaceModifierData *)md;
return ((!dmd->texture && dmd->direction == MOD_DISP_DIR_RGB_XYZ) || dmd->strength == 0.0f);
}
static void update_depsgraph(ModifierData *md, const ModifierUpdateDepsgraphContext *ctx)
{
DisplaceModifierData *dmd = (DisplaceModifierData *)md;
bool need_transform_relation = false;
if (dmd->space == MOD_DISP_SPACE_GLOBAL &&
ELEM(dmd->direction, MOD_DISP_DIR_X, MOD_DISP_DIR_Y, MOD_DISP_DIR_Z, MOD_DISP_DIR_RGB_XYZ))
{
need_transform_relation = true;
}
if (dmd->texture != nullptr) {
DEG_add_generic_id_relation(ctx->node, &dmd->texture->id, "Displace Modifier");
if (dmd->map_object != nullptr && dmd->texmapping == MOD_DISP_MAP_OBJECT) {
MOD_depsgraph_update_object_bone_relation(
ctx->node, dmd->map_object, dmd->map_bone, "Displace Modifier");
need_transform_relation = true;
}
if (dmd->texmapping == MOD_DISP_MAP_GLOBAL) {
need_transform_relation = true;
}
}
if (need_transform_relation) {
DEG_add_depends_on_transform_relation(ctx->node, "Displace Modifier");
}
}
struct DisplaceUserdata {
/*const*/ DisplaceModifierData *dmd;
Scene *scene;
ImagePool *pool;
const MDeformVert *dvert;
float weight;
int defgrp_index;
int direction;
bool use_global_direction;
Tex *tex_target;
float (*tex_co)[3];
float (*vertexCos)[3];
float local_mat[4][4];
blender::Span<blender::float3> vert_normals;
float (*vert_clnors)[3];
};
static void displaceModifier_do_task(void *__restrict userdata,
const int iter,
const TaskParallelTLS *__restrict /*tls*/)
{
DisplaceUserdata *data = (DisplaceUserdata *)userdata;
DisplaceModifierData *dmd = data->dmd;
const MDeformVert *dvert = data->dvert;
const bool invert_vgroup = (dmd->flag & MOD_DISP_INVERT_VGROUP) != 0;
float weight = data->weight;
int defgrp_index = data->defgrp_index;
int direction = data->direction;
bool use_global_direction = data->use_global_direction;
float(*tex_co)[3] = data->tex_co;
float(*vertexCos)[3] = data->vertexCos;
float(*vert_clnors)[3] = data->vert_clnors;
/* When no texture is used, we fallback to white. */
const float delta_fixed = 1.0f - dmd->midlevel;
TexResult texres;
float strength = dmd->strength;
float delta;
float local_vec[3];
if (dvert) {
weight = invert_vgroup ? 1.0f - BKE_defvert_find_weight(dvert + iter, defgrp_index) :
BKE_defvert_find_weight(dvert + iter, defgrp_index);
if (weight == 0.0f) {
return;
}
}
if (data->tex_target) {
BKE_texture_get_value_ex(data->tex_target, tex_co[iter], &texres, data->pool, false);
delta = texres.tin - dmd->midlevel;
}
else {
delta = delta_fixed; /* (1.0f - dmd->midlevel) */ /* never changes */
}
if (dvert) {
strength *= weight;
}
delta *= strength;
CLAMP(delta, -10000, 10000);
switch (direction) {
case MOD_DISP_DIR_X:
if (use_global_direction) {
vertexCos[iter][0] += delta * data->local_mat[0][0];
vertexCos[iter][1] += delta * data->local_mat[1][0];
vertexCos[iter][2] += delta * data->local_mat[2][0];
}
else {
vertexCos[iter][0] += delta;
}
break;
case MOD_DISP_DIR_Y:
if (use_global_direction) {
vertexCos[iter][0] += delta * data->local_mat[0][1];
vertexCos[iter][1] += delta * data->local_mat[1][1];
vertexCos[iter][2] += delta * data->local_mat[2][1];
}
else {
vertexCos[iter][1] += delta;
}
break;
case MOD_DISP_DIR_Z:
if (use_global_direction) {
vertexCos[iter][0] += delta * data->local_mat[0][2];
vertexCos[iter][1] += delta * data->local_mat[1][2];
vertexCos[iter][2] += delta * data->local_mat[2][2];
}
else {
vertexCos[iter][2] += delta;
}
break;
case MOD_DISP_DIR_RGB_XYZ:
local_vec[0] = texres.trgba[0] - dmd->midlevel;
local_vec[1] = texres.trgba[1] - dmd->midlevel;
local_vec[2] = texres.trgba[2] - dmd->midlevel;
if (use_global_direction) {
mul_transposed_mat3_m4_v3(data->local_mat, local_vec);
}
mul_v3_fl(local_vec, strength);
add_v3_v3(vertexCos[iter], local_vec);
break;
case MOD_DISP_DIR_NOR:
madd_v3_v3fl(vertexCos[iter], data->vert_normals[iter], delta);
break;
case MOD_DISP_DIR_CLNOR:
madd_v3_v3fl(vertexCos[iter], vert_clnors[iter], delta);
break;
}
}
static void displaceModifier_do(DisplaceModifierData *dmd,
const ModifierEvalContext *ctx,
Mesh *mesh,
float (*vertexCos)[3],
const int verts_num)
{
Object *ob = ctx->object;
const MDeformVert *dvert;
int direction = dmd->direction;
int defgrp_index;
float(*tex_co)[3];
float weight = 1.0f; /* init value unused but some compilers may complain */
float(*vert_clnors)[3] = nullptr;
float local_mat[4][4] = {{0}};
const bool use_global_direction = dmd->space == MOD_DISP_SPACE_GLOBAL;
if (dmd->texture == nullptr && dmd->direction == MOD_DISP_DIR_RGB_XYZ) {
return;
}
if (dmd->strength == 0.0f) {
return;
}
MOD_get_vgroup(ob, mesh, dmd->defgrp_name, &dvert, &defgrp_index);
if (defgrp_index >= 0 && dvert == nullptr) {
/* There is a vertex group, but it has no vertices. */
return;
}
Tex *tex_target = dmd->texture;
if (tex_target != nullptr) {
tex_co = static_cast<float(*)[3]>(
MEM_calloc_arrayN(size_t(verts_num), sizeof(*tex_co), "displaceModifier_do tex_co"));
MOD_get_texture_coords((MappingInfoModifierData *)dmd, ctx, ob, mesh, vertexCos, tex_co);
MOD_init_texture((MappingInfoModifierData *)dmd, ctx);
}
else {
tex_co = nullptr;
}
if (direction == MOD_DISP_DIR_CLNOR) {
CustomData *ldata = &mesh->loop_data;
if (CustomData_has_layer(ldata, CD_CUSTOMLOOPNORMAL)) {
if (!CustomData_has_layer(ldata, CD_NORMAL)) {
BKE_mesh_calc_normals_split(mesh);
}
float(*clnors)[3] = static_cast<float(*)[3]>(
CustomData_get_layer_for_write(ldata, CD_NORMAL, mesh->totloop));
vert_clnors = static_cast<float(*)[3]>(
MEM_malloc_arrayN(verts_num, sizeof(*vert_clnors), __func__));
BKE_mesh_normals_loop_to_vertex(verts_num,
mesh->corner_verts().data(),
mesh->totloop,
(const float(*)[3])clnors,
vert_clnors);
}
else {
direction = MOD_DISP_DIR_NOR;
}
}
else if (ELEM(direction, MOD_DISP_DIR_X, MOD_DISP_DIR_Y, MOD_DISP_DIR_Z, MOD_DISP_DIR_RGB_XYZ) &&
use_global_direction)
{
copy_m4_m4(local_mat, ob->object_to_world);
}
DisplaceUserdata data = {nullptr};
data.scene = DEG_get_evaluated_scene(ctx->depsgraph);
data.dmd = dmd;
data.dvert = dvert;
data.weight = weight;
data.defgrp_index = defgrp_index;
data.direction = direction;
data.use_global_direction = use_global_direction;
data.tex_target = tex_target;
data.tex_co = tex_co;
data.vertexCos = vertexCos;
copy_m4_m4(data.local_mat, local_mat);
if (direction == MOD_DISP_DIR_NOR) {
data.vert_normals = mesh->vert_normals();
}
data.vert_clnors = vert_clnors;
if (tex_target != nullptr) {
data.pool = BKE_image_pool_new();
BKE_texture_fetch_images_for_pool(tex_target, data.pool);
}
TaskParallelSettings settings;
BLI_parallel_range_settings_defaults(&settings);
settings.use_threading = (verts_num > 512);
BLI_task_parallel_range(0, verts_num, &data, displaceModifier_do_task, &settings);
if (data.pool != nullptr) {
BKE_image_pool_free(data.pool);
}
if (tex_co) {
MEM_freeN(tex_co);
}
if (vert_clnors) {
MEM_freeN(vert_clnors);
}
}
static void deform_verts(ModifierData *md,
const ModifierEvalContext *ctx,
Mesh *mesh,
float (*vertexCos)[3],
int verts_num)
{
displaceModifier_do((DisplaceModifierData *)md, ctx, mesh, vertexCos, verts_num);
}
static void panel_draw(const bContext *C, Panel *panel)
{
uiLayout *col;
uiLayout *layout = panel->layout;
PointerRNA ob_ptr;
PointerRNA *ptr = modifier_panel_get_property_pointers(panel, &ob_ptr);
PointerRNA obj_data_ptr = RNA_pointer_get(&ob_ptr, "data");
PointerRNA texture_ptr = RNA_pointer_get(ptr, "texture");
bool has_texture = !RNA_pointer_is_null(&texture_ptr);
int texture_coords = RNA_enum_get(ptr, "texture_coords");
uiLayoutSetPropSep(layout, true);
uiTemplateID(layout, C, ptr, "texture", "texture.new", nullptr, nullptr, 0, ICON_NONE, nullptr);
col = uiLayoutColumn(layout, false);
uiLayoutSetActive(col, has_texture);
uiItemR(col, ptr, "texture_coords", UI_ITEM_NONE, IFACE_("Coordinates"), ICON_NONE);
if (texture_coords == MOD_DISP_MAP_OBJECT) {
uiItemR(col, ptr, "texture_coords_object", UI_ITEM_NONE, IFACE_("Object"), ICON_NONE);
PointerRNA texture_coords_obj_ptr = RNA_pointer_get(ptr, "texture_coords_object");
if (!RNA_pointer_is_null(&texture_coords_obj_ptr) &&
(RNA_enum_get(&texture_coords_obj_ptr, "type") == OB_ARMATURE))
{
PointerRNA texture_coords_obj_data_ptr = RNA_pointer_get(&texture_coords_obj_ptr, "data");
uiItemPointerR(col,
ptr,
"texture_coords_bone",
&texture_coords_obj_data_ptr,
"bones",
IFACE_("Bone"),
ICON_NONE);
}
}
else if (texture_coords == MOD_DISP_MAP_UV && RNA_enum_get(&ob_ptr, "type") == OB_MESH) {
uiItemPointerR(col, ptr, "uv_layer", &obj_data_ptr, "uv_layers", nullptr, ICON_NONE);
}
uiItemS(layout);
col = uiLayoutColumn(layout, false);
uiItemR(col, ptr, "direction", UI_ITEM_NONE, nullptr, ICON_NONE);
if (ELEM(RNA_enum_get(ptr, "direction"),
MOD_DISP_DIR_X,
MOD_DISP_DIR_Y,
MOD_DISP_DIR_Z,
MOD_DISP_DIR_RGB_XYZ))
{
uiItemR(col, ptr, "space", UI_ITEM_NONE, nullptr, ICON_NONE);
}
uiItemS(layout);
col = uiLayoutColumn(layout, false);
uiItemR(col, ptr, "strength", UI_ITEM_NONE, nullptr, ICON_NONE);
uiItemR(col, ptr, "mid_level", UI_ITEM_NONE, nullptr, ICON_NONE);
modifier_vgroup_ui(col, ptr, &ob_ptr, "vertex_group", "invert_vertex_group", nullptr);
modifier_panel_end(layout, ptr);
}
static void panel_register(ARegionType *region_type)
{
modifier_panel_register(region_type, eModifierType_Displace, panel_draw);
}
ModifierTypeInfo modifierType_Displace = {
/*idname*/ "Displace",
/*name*/ N_("Displace"),
/*struct_name*/ "DisplaceModifierData",
/*struct_size*/ sizeof(DisplaceModifierData),
/*srna*/ &RNA_DisplaceModifier,
/*type*/ eModifierTypeType_OnlyDeform,
/*flags*/ eModifierTypeFlag_AcceptsMesh | eModifierTypeFlag_SupportsEditmode,
/*icon*/ ICON_MOD_DISPLACE,
/*copy_data*/ BKE_modifier_copydata_generic,
/*deform_verts*/ deform_verts,
/*deform_matrices*/ nullptr,
/*deform_verts_EM*/ nullptr,
/*deform_matrices_EM*/ nullptr,
/*modify_mesh*/ nullptr,
/*modify_geometry_set*/ nullptr,
/*init_data*/ init_data,
/*required_data_mask*/ required_data_mask,
/*free_data*/ nullptr,
/*is_disabled*/ is_disabled,
/*update_depsgraph*/ update_depsgraph,
/*depends_on_time*/ depends_on_time,
/*depends_on_normals*/ depends_on_normals,
/*foreach_ID_link*/ foreach_ID_link,
/*foreach_tex_link*/ foreach_tex_link,
/*free_runtime_data*/ nullptr,
/*panel_register*/ panel_register,
/*blend_write*/ nullptr,
/*blend_read*/ nullptr,
};
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