void BKE_linestyle_default_shader(const bContext *C, FreestyleLineStyle *linestyle)
{
bNode *uv_along_stroke, *input_texure, *output_linestyle;
bNodeSocket *fromsock, *tosock;
bNodeTree *ntree;
BLI_assert(linestyle->nodetree == NULL);
ntree = ntreeAddTree(NULL, "stroke_shader", "ShaderNodeTree");
linestyle->nodetree = ntree;
uv_along_stroke = nodeAddStaticNode(C, ntree, SH_NODE_UVALONGSTROKE);
uv_along_stroke->locx = 0.0f;
uv_along_stroke->locy = 300.0f;
uv_along_stroke->custom1 = 0; // use_tips
input_texure = nodeAddStaticNode(C, ntree, SH_NODE_TEX_IMAGE);
input_texure->locx = 200.0f;
input_texure->locy = 300.0f;
output_linestyle = nodeAddStaticNode(C, ntree, SH_NODE_OUTPUT_LINESTYLE);
output_linestyle->locx = 400.0f;
output_linestyle->locy = 300.0f;
output_linestyle->custom1 = MA_RAMP_BLEND;
output_linestyle->custom2 = 0; // use_clamp
nodeSetActive(ntree, input_texure);
fromsock = BLI_findlink(&uv_along_stroke->outputs, 0); // UV
tosock = BLI_findlink(&input_texure->inputs, 0); // UV
nodeAddLink(ntree, uv_along_stroke, fromsock, input_texure, tosock);
fromsock = BLI_findlink(&input_texure->outputs, 0); // Color
tosock = BLI_findlink(&output_linestyle->inputs, 0); // Color
nodeAddLink(ntree, input_texure, fromsock, output_linestyle, tosock);
ntreeUpdateTree(CTX_data_main(C), ntree);
}
/* Re-link displacement output to unconnected normal sockets via bump node.
* This way material with have proper displacement in the viewport.
*/
static void ntree_shader_relink_displacement(bNodeTree *ntree,
short compatibility)
{
if (compatibility != NODE_NEW_SHADING) {
/* We can only deal with new shading system here. */
return;
}
bNode *displacement_node;
bNodeSocket *displacement_socket;
bNodeLink *displacement_link;
if (!ntree_shader_has_displacement(ntree,
&displacement_node,
&displacement_socket,
&displacement_link))
{
/* There is no displacement output connected, nothing to re-link. */
return;
}
/* We have to disconnect displacement output socket, otherwise we'll have
* cycles in the Cycles material :)
*/
nodeRemLink(ntree, displacement_link);
/* We can't connect displacement to normal directly, use bump node for that
* and hope that it gives good enough approximation.
*/
bNode *bump_node = nodeAddStaticNode(NULL, ntree, SH_NODE_BUMP);
bNodeSocket *bump_input_socket = ntree_shader_node_find_input(bump_node, "Height");
bNodeSocket *bump_output_socket = ntree_shader_node_find_output(bump_node, "Normal");
BLI_assert(bump_input_socket != NULL);
BLI_assert(bump_output_socket != NULL);
/* Connect bump node to where displacement output was originally
* connected to.
*/
nodeAddLink(ntree,
displacement_node, displacement_socket,
bump_node, bump_input_socket);
/* Connect all free-standing Normal inputs. */
ntree_shader_link_builtin_normal(ntree,
bump_node,
bump_output_socket,
displacement_node,
displacement_socket);
/* TODO(sergey): Reconnect Geometry Info->Normal sockets to the new
* bump node.
*/
/* We modified the tree, it needs to be updated now. */
ntreeUpdateTree(G.main, ntree);
}
static void node_group_make_insert_selected(const bContext *C, bNodeTree *ntree, bNode *gnode)
{
bNodeTree *ngroup = (bNodeTree *)gnode->id;
bNodeLink *link, *linkn;
bNode *node, *nextn;
bNodeSocket *sock;
ListBase anim_basepaths = {NULL, NULL};
float min[2], max[2], center[2];
int totselect;
int expose_all = FALSE;
bNode *input_node, *output_node;
/* XXX rough guess, not nice but we don't have access to UI constants here ... */
static const float offsetx = 200;
static const float offsety = 0.0f;
/* deselect all nodes in the target tree */
for (node = ngroup->nodes.first; node; node = node->next)
nodeSetSelected(node, FALSE);
totselect = node_get_selected_minmax(ntree, gnode, min, max);
add_v2_v2v2(center, min, max);
mul_v2_fl(center, 0.5f);
/* auto-add interface for "solo" nodes */
if (totselect == 1)
expose_all = TRUE;
/* move nodes over */
for (node = ntree->nodes.first; node; node = nextn) {
nextn = node->next;
if (node_group_make_use_node(node, gnode)) {
/* keep track of this node's RNA "base" path (the part of the pat identifying the node)
* if the old nodetree has animation data which potentially covers this node
*/
if (ntree->adt) {
PointerRNA ptr;
char *path;
RNA_pointer_create(&ntree->id, &RNA_Node, node, &ptr);
path = RNA_path_from_ID_to_struct(&ptr);
if (path)
BLI_addtail(&anim_basepaths, BLI_genericNodeN(path));
}
/* ensure valid parent pointers, detach if parent stays outside the group */
if (node->parent && !(node->parent->flag & NODE_SELECT))
nodeDetachNode(node);
/* change node-collection membership */
BLI_remlink(&ntree->nodes, node);
BLI_addtail(&ngroup->nodes, node);
/* ensure unique node name in the ngroup */
nodeUniqueName(ngroup, node);
}
}
/* move animation data over */
if (ntree->adt) {
LinkData *ld, *ldn = NULL;
BKE_animdata_separate_by_basepath(&ntree->id, &ngroup->id, &anim_basepaths);
/* paths + their wrappers need to be freed */
for (ld = anim_basepaths.first; ld; ld = ldn) {
ldn = ld->next;
MEM_freeN(ld->data);
BLI_freelinkN(&anim_basepaths, ld);
}
}
/* node groups don't use internal cached data */
ntreeFreeCache(ngroup);
/* create input node */
input_node = nodeAddStaticNode(C, ngroup, NODE_GROUP_INPUT);
input_node->locx = min[0] - center[0] - offsetx;
input_node->locy = -offsety;
/* create output node */
output_node = nodeAddStaticNode(C, ngroup, NODE_GROUP_OUTPUT);
output_node->locx = max[0] - center[0] + offsetx;
output_node->locy = -offsety;
/* relink external sockets */
for (link = ntree->links.first; link; link = linkn) {
int fromselect = node_group_make_use_node(link->fromnode, gnode);
int toselect = node_group_make_use_node(link->tonode, gnode);
linkn = link->next;
if ((fromselect && link->tonode == gnode) || (toselect && link->fromnode == gnode)) {
/* remove all links to/from the gnode.
* this can remove link information, but there's no general way to preserve it.
*/
nodeRemLink(ntree, link);
}
else if (fromselect && toselect) {
BLI_remlink(&ntree->links, link);
BLI_addtail(&ngroup->links, link);
}
else if (toselect) {
bNodeSocket *iosock = ntreeAddSocketInterfaceFromSocket(ngroup, link->tonode, link->tosock);
bNodeSocket *input_sock;
/* update the group node and interface node sockets,
* so the new interface socket can be linked.
*/
node_group_verify(ntree, gnode, (ID *)ngroup);
node_group_input_verify(ngroup, input_node, (ID *)ngroup);
/* create new internal link */
input_sock = node_group_input_find_socket(input_node, iosock->identifier);
nodeAddLink(ngroup, input_node, input_sock, link->tonode, link->tosock);
/* redirect external link */
link->tonode = gnode;
link->tosock = node_group_find_input_socket(gnode, iosock->identifier);
}
else if (fromselect) {
bNodeSocket *iosock = ntreeAddSocketInterfaceFromSocket(ngroup, link->fromnode, link->fromsock);
bNodeSocket *output_sock;
/* update the group node and interface node sockets,
* so the new interface socket can be linked.
*/
node_group_verify(ntree, gnode, (ID *)ngroup);
node_group_output_verify(ngroup, output_node, (ID *)ngroup);
/* create new internal link */
output_sock = node_group_output_find_socket(output_node, iosock->identifier);
nodeAddLink(ngroup, link->fromnode, link->fromsock, output_node, output_sock);
/* redirect external link */
link->fromnode = gnode;
link->fromsock = node_group_find_output_socket(gnode, iosock->identifier);
}
}
/* move nodes in the group to the center */
for (node = ngroup->nodes.first; node; node = node->next) {
if (node_group_make_use_node(node, gnode) && !node->parent) {
node->locx -= center[0];
node->locy -= center[1];
}
}
/* expose all unlinked sockets too */
if (expose_all) {
for (node = ngroup->nodes.first; node; node = node->next) {
if (node_group_make_use_node(node, gnode)) {
for (sock = node->inputs.first; sock; sock = sock->next) {
bNodeSocket *iosock, *input_sock;
int skip = FALSE;
for (link = ngroup->links.first; link; link = link->next) {
if (link->tosock == sock) {
skip = TRUE;
break;
}
}
if (skip)
continue;
iosock = ntreeAddSocketInterfaceFromSocket(ngroup, node, sock);
node_group_input_verify(ngroup, input_node, (ID *)ngroup);
/* create new internal link */
input_sock = node_group_input_find_socket(input_node, iosock->identifier);
nodeAddLink(ngroup, input_node, input_sock, node, sock);
}
for (sock = node->outputs.first; sock; sock = sock->next) {
bNodeSocket *iosock, *output_sock;
int skip = FALSE;
for (link = ngroup->links.first; link; link = link->next)
if (link->fromsock == sock)
skip = TRUE;
if (skip)
continue;
iosock = ntreeAddSocketInterfaceFromSocket(ngroup, node, sock);
node_group_output_verify(ngroup, output_node, (ID *)ngroup);
/* create new internal link */
output_sock = node_group_output_find_socket(output_node, iosock->identifier);
nodeAddLink(ngroup, node, sock, output_node, output_sock);
}
}
}
}
/* update of the group tree */
ngroup->update |= NTREE_UPDATE | NTREE_UPDATE_LINKS;
/* update of the tree containing the group instance node */
ntree->update |= NTREE_UPDATE_NODES | NTREE_UPDATE_LINKS;
}
/* add new node connected to this socket, or replace an existing one */
static void node_socket_add_replace(const bContext *C, bNodeTree *ntree, bNode *node_to, bNodeSocket *sock_to,
int type, NodeLinkItem *item)
{
bNode *node_from;
bNodeSocket *sock_from_tmp;
bNode *node_prev = NULL;
/* unlink existing node */
if (sock_to->link) {
node_prev = sock_to->link->fromnode;
nodeRemLink(ntree, sock_to->link);
}
/* find existing node that we can use */
for (node_from = ntree->nodes.first; node_from; node_from = node_from->next)
if (node_from->type == type)
break;
if (node_from)
if (node_from->inputs.first || node_from->typeinfo->draw_buttons || node_from->typeinfo->draw_buttons_ex)
node_from = NULL;
if (node_prev && node_prev->type == type && node_link_item_compare(node_prev, item)) {
/* keep the previous node if it's the same type */
node_from = node_prev;
}
else if (!node_from) {
node_from = nodeAddStaticNode(C, ntree, type);
if (node_prev != NULL) {
/* If we're replacing existing node, use it's location. */
node_from->locx = node_prev->locx;
node_from->locy = node_prev->locy;
node_from->offsetx = node_prev->offsetx;
node_from->offsety = node_prev->offsety;
}
else {
/* Avoid exact intersection of nodes.
* TODO(sergey): Still not ideal, but better than nothing.
*/
int index = BLI_findindex(&node_to->inputs, sock_to);
BLI_assert(index != -1);
node_from->locx = node_to->locx - (node_from->typeinfo->width + 50);
node_from->locy = node_to->locy - (node_from->typeinfo->height * index);
}
node_link_item_apply(node_from, item);
}
nodeSetActive(ntree, node_from);
/* add link */
sock_from_tmp = BLI_findlink(&node_from->outputs, item->socket_index);
nodeAddLink(ntree, node_from, sock_from_tmp, node_to, sock_to);
sock_to->flag &= ~SOCK_COLLAPSED;
/* copy input sockets from previous node */
if (node_prev && node_from != node_prev) {
bNodeSocket *sock_prev, *sock_from;
for (sock_prev = node_prev->inputs.first; sock_prev; sock_prev = sock_prev->next) {
for (sock_from = node_from->inputs.first; sock_from; sock_from = sock_from->next) {
if (nodeCountSocketLinks(ntree, sock_from) >= sock_from->limit)
continue;
if (STREQ(sock_prev->name, sock_from->name) && sock_prev->type == sock_from->type) {
bNodeLink *link = sock_prev->link;
if (link && link->fromnode) {
nodeAddLink(ntree, link->fromnode, link->fromsock, node_from, sock_from);
nodeRemLink(ntree, link);
}
node_socket_copy_default_value(sock_from, sock_prev);
}
}
}
/* also preserve mapping for texture nodes */
if (node_from->typeinfo->nclass == NODE_CLASS_TEXTURE &&
node_prev->typeinfo->nclass == NODE_CLASS_TEXTURE)
{
memcpy(node_from->storage, node_prev->storage, sizeof(NodeTexBase));
}
/* remove node */
node_remove_linked(ntree, node_prev);
}
nodeUpdate(ntree, node_from);
nodeUpdate(ntree, node_to);
ntreeUpdateTree(CTX_data_main(C), ntree);
ED_node_tag_update_nodetree(CTX_data_main(C), ntree);
}
static void ntree_shader_link_builtin_group_normal(
bNodeTree *ntree,
bNode *group_node,
bNode *node_from,
bNodeSocket *socket_from,
bNode *displacement_node,
bNodeSocket *displacement_socket)
{
bNodeTree *group_ntree = (bNodeTree *)group_node->id;
/* Create input socket to plug displacement connection to. */
bNodeSocket *group_normal_socket =
ntreeAddSocketInterface(group_ntree,
SOCK_IN,
"NodeSocketVector",
"Normal");
/* Need to update tree so all node instances nodes gets proper sockets. */
bNode *group_input_node = ntreeFindType(group_ntree, NODE_GROUP_INPUT);
node_group_verify(ntree, group_node, &group_ntree->id);
if (group_input_node)
node_group_input_verify(group_ntree, group_input_node, &group_ntree->id);
ntreeUpdateTree(G.main, group_ntree);
/* Assumes sockets are always added at the end. */
bNodeSocket *group_node_normal_socket = group_node->inputs.last;
if (displacement_node == group_node) {
/* If displacement is coming from this node group we need to perform
* some internal re-linking in order to avoid cycles.
*/
bNode *group_output_node = ntreeFindType(group_ntree, NODE_GROUP_OUTPUT);
BLI_assert(group_output_node != NULL);
bNodeSocket *group_output_node_displacement_socket =
nodeFindSocket(group_output_node,
SOCK_IN,
displacement_socket->identifier);
bNodeLink *group_displacement_link = group_output_node_displacement_socket->link;
if (group_displacement_link == NULL) {
/* Displacement output is not connected to anything, can just stop
* right away.
*/
return;
}
/* This code is similar to ntree_shader_relink_displacement() */
bNode *group_displacement_node = group_displacement_link->fromnode;
bNodeSocket *group_displacement_socket = group_displacement_link->fromsock;
/* Create and link bump node.
* Can't re-use bump node from parent tree because it'll cause cycle.
*/
bNode *bump_node = nodeAddStaticNode(NULL, group_ntree, SH_NODE_BUMP);
bNodeSocket *bump_input_socket = ntree_shader_node_find_input(bump_node, "Height");
bNodeSocket *bump_output_socket = ntree_shader_node_find_output(bump_node, "Normal");
BLI_assert(bump_input_socket != NULL);
BLI_assert(bump_output_socket != NULL);
nodeAddLink(group_ntree,
group_displacement_node, group_displacement_socket,
bump_node, bump_input_socket);
/* Relink normals inside of the instanced tree. */
ntree_shader_link_builtin_normal(group_ntree,
bump_node,
bump_output_socket,
group_displacement_node,
group_displacement_socket);
ntreeUpdateTree(G.main, group_ntree);
}
else if (group_input_node) {
/* Connect group node normal input. */
nodeAddLink(ntree,
node_from, socket_from,
group_node, group_node_normal_socket);
BLI_assert(group_input_node != NULL);
bNodeSocket *group_input_node_normal_socket =
nodeFindSocket(group_input_node,
SOCK_OUT,
group_normal_socket->identifier);
BLI_assert(group_input_node_normal_socket != NULL);
/* Relink normals inside of the instanced tree. */
ntree_shader_link_builtin_normal(group_ntree,
group_input_node,
group_input_node_normal_socket,
displacement_node,
displacement_socket);
ntreeUpdateTree(G.main, group_ntree);
}
}
