source/blender/nodes/shader/nodes/node_shader_geom.c

   1 /*
   2  * ***** BEGIN GPL LICENSE BLOCK *****
   3  *
   4  * This program is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU General Public License
   6  * as published by the Free Software Foundation; either version 2
   7  * of the License, or (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software Foundation,
  16  * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  17  *
  18  * The Original Code is Copyright (C) 2005 Blender Foundation.
  19  * All rights reserved.
  20  *
  21  * The Original Code is: all of this file.
  22  *
  23  * Contributor(s): none yet.
  24  *
  25  * ***** END GPL LICENSE BLOCK *****
  26  */
  27
  28 /** \file blender/nodes/shader/nodes/node_shader_geom.c
  29  *  \ingroup shdnodes
  30  */
  31
  32
  33 #include "node_shader_util.h"
  34
  35 #include "DNA_customdata_types.h"
  36
  37 /* **************** GEOMETRY  ******************** */
  38
  39 /* output socket type definition */
  40 static bNodeSocketTemplate sh_node_geom_out[]= {
  41         {       SOCK_VECTOR, 0, "Global"},
  42         {       SOCK_VECTOR, 0, "Local"},
  43         {       SOCK_VECTOR, 0, "View"},
  44         {       SOCK_VECTOR, 0, "Orco"},
  45         {       SOCK_VECTOR, 0, "UV"},
  46         {       SOCK_VECTOR, 0, "Normal"},
  47         {       SOCK_RGBA,   0, "Vertex Color"},
  48         {       SOCK_FLOAT,   0, "Front/Back"},
  49         {       -1, 0, ""       }
  50 };
  51
  52 /* node execute callback */
  53 static void node_shader_exec_geom(void *data, bNode *node, bNodeStack **UNUSED(in), bNodeStack **out)
  54 {
  55         if(data) {
  56                 ShadeInput *shi= ((ShaderCallData *)data)->shi;
  57                 NodeGeometry *ngeo= (NodeGeometry*)node->storage;
  58                 ShadeInputUV *suv= &shi->uv[shi->actuv];
  59                 static float defaultvcol[4] = {1.0f, 1.0f, 1.0f, 1.0f};
  60                 int i;
  61
  62                 if(ngeo->uvname[0]) {
  63                         /* find uv layer by name */
  64                         for(i = 0; i < shi->totuv; i++) {
  65                                 if(strcmp(shi->uv[i].name, ngeo->uvname)==0) {
  66                                         suv= &shi->uv[i];
  67                                         break;
  68                                 }
  69                         }
  70                 }
  71
  72                 /* out: global, local, view, orco, uv, normal, vertex color */
  73                 copy_v3_v3(out[GEOM_OUT_GLOB]->vec, shi->gl);
  74                 copy_v3_v3(out[GEOM_OUT_LOCAL]->vec, shi->co);
  75                 copy_v3_v3(out[GEOM_OUT_VIEW]->vec, shi->view);
  76                 copy_v3_v3(out[GEOM_OUT_ORCO]->vec, shi->lo);
  77                 copy_v3_v3(out[GEOM_OUT_UV]->vec, suv->uv);
  78                 copy_v3_v3(out[GEOM_OUT_NORMAL]->vec, shi->vno);
  79
  80                 if (shi->totcol) {
  81                         /* find vertex color layer by name */
  82                         ShadeInputCol *scol= &shi->col[0];
  83
  84                         if(ngeo->colname[0]) {
  85                                 for(i = 0; i < shi->totcol; i++) {
  86                                         if(strcmp(shi->col[i].name, ngeo->colname)==0) {
  87                                                 scol= &shi->col[i];
  88                                                 break;
  89                                         }
  90                                 }
  91                         }
  92
  93                         VECCOPY(out[GEOM_OUT_VCOL]->vec, scol->col);
  94                         out[GEOM_OUT_VCOL]->vec[3]= 1.0f;
  95                 }
  96                 else
  97                         memcpy(out[GEOM_OUT_VCOL]->vec, defaultvcol, sizeof(defaultvcol));
  98
  99                 if(shi->osatex) {
 100                         out[GEOM_OUT_GLOB]->data= shi->dxgl;
 101                         out[GEOM_OUT_GLOB]->datatype= NS_OSA_VECTORS;
 102                         out[GEOM_OUT_LOCAL]->data= shi->dxco;
 103                         out[GEOM_OUT_LOCAL]->datatype= NS_OSA_VECTORS;
 104                         out[GEOM_OUT_VIEW]->data= &shi->dxview;
 105                         out[GEOM_OUT_VIEW]->datatype= NS_OSA_VALUES;
 106                         out[GEOM_OUT_ORCO]->data= shi->dxlo;
 107                         out[GEOM_OUT_ORCO]->datatype= NS_OSA_VECTORS;
 108                         out[GEOM_OUT_UV]->data= suv->dxuv;
 109                         out[GEOM_OUT_UV]->datatype= NS_OSA_VECTORS;
 110                         out[GEOM_OUT_NORMAL]->data= shi->dxno;
 111                         out[GEOM_OUT_NORMAL]->datatype= NS_OSA_VECTORS;
 112                 }
 113
 114                 /* front/back, normal flipping was stored */
 115                 out[GEOM_OUT_FRONTBACK]->vec[0]= (shi->flippednor)? 0.0f: 1.0f;
 116         }
 117 }
 118
 119 static void node_shader_init_geometry(bNodeTree *UNUSED(ntree), bNode* node, bNodeTemplate *UNUSED(ntemp))
 120 {
 121         node->storage= MEM_callocN(sizeof(NodeGeometry), "NodeGeometry");
 122 }
 123
 124 static int gpu_shader_geom(GPUMaterial *mat, bNode *node, GPUNodeStack *in, GPUNodeStack *out)
 125 {
 126         NodeGeometry *ngeo= (NodeGeometry*)node->storage;
 127         GPUNodeLink *orco = GPU_attribute(CD_ORCO, "");
 128         GPUNodeLink *mtface = GPU_attribute(CD_MTFACE, ngeo->uvname);
 129         GPUNodeLink *mcol = GPU_attribute(CD_MCOL, ngeo->colname);
 130
 131         return GPU_stack_link(mat, "geom", in, out,
 132                 GPU_builtin(GPU_VIEW_POSITION), GPU_builtin(GPU_VIEW_NORMAL),
 133                 GPU_builtin(GPU_INVERSE_VIEW_MATRIX), orco, mtface, mcol);
 134 }
 135
 136 /* node type definition */
 137 void register_node_type_sh_geom(ListBase *lb)
 138 {
 139         static bNodeType ntype;
 140
 141         node_type_base(&ntype, SH_NODE_GEOM, "Geometry", NODE_CLASS_INPUT, NODE_OPTIONS);
 142         node_type_compatibility(&ntype, NODE_OLD_SHADING);
 143         node_type_socket_templates(&ntype, NULL, sh_node_geom_out);
 144         node_type_size(&ntype, 120, 80, 160);
 145         node_type_init(&ntype, node_shader_init_geometry);
 146         node_type_storage(&ntype, "NodeGeometry", node_free_standard_storage, node_copy_standard_storage);
 147         node_type_exec(&ntype, node_shader_exec_geom);
 148         node_type_gpu(&ntype, gpu_shader_geom);
 149
 150         nodeRegisterType(lb, &ntype);
 151 }
 152