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/*
* $Id$
*
* ***** BEGIN GPL LICENSE BLOCK *****
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* The Original Code is Copyright (C) 2005 Blender Foundation.
* All rights reserved.
*
* The Original Code is: all of this file.
*
* Contributor(s): none yet.
*
* ***** END GPL LICENSE BLOCK *****
*/
/** \file blender/nodes/intern/SHD_util.c
* \ingroup nodes
*/
#include "SHD_util.h"
/* ****** */
void nodestack_get_vec(float *in, short type_in, bNodeStack *ns)
{
float *from= ns->vec;
if(type_in==SOCK_VALUE) {
if(ns->sockettype==SOCK_VALUE)
*in= *from;
else
*in= 0.333333f*(from[0]+from[1]+from[2]);
}
else if(type_in==SOCK_VECTOR) {
if(ns->sockettype==SOCK_VALUE) {
in[0]= from[0];
in[1]= from[0];
in[2]= from[0];
}
else {
VECCOPY(in, from);
}
}
else { /* type_in==SOCK_RGBA */
if(ns->sockettype==SOCK_RGBA) {
QUATCOPY(in, from);
}
else if(ns->sockettype==SOCK_VALUE) {
in[0]= from[0];
in[1]= from[0];
in[2]= from[0];
in[3]= 1.0f;
}
else {
VECCOPY(in, from);
in[3]= 1.0f;
}
}
}
/* ******************* execute and parse ************ */
void ntreeShaderExecTree(bNodeTree *ntree, ShadeInput *shi, ShadeResult *shr)
{
ShaderCallData scd;
/*
@note: preserve material from ShadeInput for material id, nodetree execs change it
fix for bug "[#28012] Mat ID messy with shader nodes"
*/
Material *mat = shi->mat;
/* convert caller data to struct */
scd.shi= shi;
scd.shr= shr;
/* each material node has own local shaderesult, with optional copying */
memset(shr, 0, sizeof(ShadeResult));
ntreeExecTree(ntree, &scd, shi->thread); /* threads */
// @note: set material back to preserved material
shi->mat = mat;
/* better not allow negative for now */
if(shr->combined[0]<0.0f) shr->combined[0]= 0.0f;
if(shr->combined[1]<0.0f) shr->combined[1]= 0.0f;
if(shr->combined[2]<0.0f) shr->combined[2]= 0.0f;
}
/* go over all used Geometry and Texture nodes, and return a texco flag */
/* no group inside needed, this function is called for groups too */
void ntreeShaderGetTexcoMode(bNodeTree *ntree, int r_mode, short *texco, int *mode)
{
bNode *node;
bNodeSocket *sock;
int a;
ntreeSocketUseFlags(ntree);
for(node= ntree->nodes.first; node; node= node->next) {
if(node->type==SH_NODE_TEXTURE) {
if((r_mode & R_OSA) && node->id) {
Tex *tex= (Tex *)node->id;
if ELEM3(tex->type, TEX_IMAGE, TEX_PLUGIN, TEX_ENVMAP)
*texco |= TEXCO_OSA|NEED_UV;
}
/* usability exception... without input we still give the node orcos */
sock= node->inputs.first;
if(sock==NULL || sock->link==NULL)
*texco |= TEXCO_ORCO|NEED_UV;
}
else if(node->type==SH_NODE_GEOMETRY) {
/* note; sockets always exist for the given type! */
for(a=0, sock= node->outputs.first; sock; sock= sock->next, a++) {
if(sock->flag & SOCK_IN_USE) {
switch(a) {
case GEOM_OUT_GLOB:
*texco |= TEXCO_GLOB|NEED_UV; break;
case GEOM_OUT_VIEW:
*texco |= TEXCO_VIEW|NEED_UV; break;
case GEOM_OUT_ORCO:
*texco |= TEXCO_ORCO|NEED_UV; break;
case GEOM_OUT_UV:
*texco |= TEXCO_UV|NEED_UV; break;
case GEOM_OUT_NORMAL:
*texco |= TEXCO_NORM|NEED_UV; break;
case GEOM_OUT_VCOL:
*texco |= NEED_UV; *mode |= MA_VERTEXCOL; break;
}
}
}
}
}
}
/* nodes that use ID data get synced with local data */
void nodeShaderSynchronizeID(bNode *node, int copyto)
{
if(node->id==NULL) return;
if(ELEM(node->type, SH_NODE_MATERIAL, SH_NODE_MATERIAL_EXT)) {
bNodeSocket *sock;
Material *ma= (Material *)node->id;
int a;
/* hrmf, case in loop isnt super fast, but we dont edit 100s of material at same time either! */
for(a=0, sock= node->inputs.first; sock; sock= sock->next, a++) {
if(!(sock->flag & SOCK_HIDDEN)) {
if(copyto) {
switch(a) {
case MAT_IN_COLOR:
VECCOPY(&ma->r, sock->ns.vec); break;
case MAT_IN_SPEC:
VECCOPY(&ma->specr, sock->ns.vec); break;
case MAT_IN_REFL:
ma->ref= sock->ns.vec[0]; break;
case MAT_IN_MIR:
VECCOPY(&ma->mirr, sock->ns.vec); break;
case MAT_IN_AMB:
ma->amb= sock->ns.vec[0]; break;
case MAT_IN_EMIT:
ma->emit= sock->ns.vec[0]; break;
case MAT_IN_SPECTRA:
ma->spectra= sock->ns.vec[0]; break;
case MAT_IN_RAY_MIRROR:
ma->ray_mirror= sock->ns.vec[0]; break;
case MAT_IN_ALPHA:
ma->alpha= sock->ns.vec[0]; break;
case MAT_IN_TRANSLUCENCY:
ma->translucency= sock->ns.vec[0]; break;
}
}
else {
switch(a) {
case MAT_IN_COLOR:
VECCOPY(sock->ns.vec, &ma->r); break;
case MAT_IN_SPEC:
VECCOPY(sock->ns.vec, &ma->specr); break;
case MAT_IN_REFL:
sock->ns.vec[0]= ma->ref; break;
case MAT_IN_MIR:
VECCOPY(sock->ns.vec, &ma->mirr); break;
case MAT_IN_AMB:
sock->ns.vec[0]= ma->amb; break;
case MAT_IN_EMIT:
sock->ns.vec[0]= ma->emit; break;
case MAT_IN_SPECTRA:
sock->ns.vec[0]= ma->spectra; break;
case MAT_IN_RAY_MIRROR:
sock->ns.vec[0]= ma->ray_mirror; break;
case MAT_IN_ALPHA:
sock->ns.vec[0]= ma->alpha; break;
case MAT_IN_TRANSLUCENCY:
sock->ns.vec[0]= ma->translucency; break;
}
}
}
}
}
}
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