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/*
* Copyright 2011, Blender Foundation.
*
* 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.
*/
CCL_NAMESPACE_BEGIN
/* Geometry Node */
__device void svm_node_geometry(ShaderData *sd, float *stack, uint type, uint out_offset)
{
float3 data;
switch(type) {
case NODE_GEOM_P: data = sd->P; break;
case NODE_GEOM_N: data = sd->N; break;
#ifdef __DPDU__
case NODE_GEOM_T: data = normalize(sd->dPdu); break;
#endif
case NODE_GEOM_I: data = sd->I; break;
case NODE_GEOM_Ng: data = sd->Ng; break;
#ifdef __UV__
case NODE_GEOM_uv: data = make_float3(sd->u, sd->v, 0.0f); break;
#endif
}
stack_store_float3(stack, out_offset, data);
}
__device void svm_node_geometry_bump_dx(ShaderData *sd, float *stack, uint type, uint out_offset)
{
#ifdef __RAY_DIFFERENTIALS__
float3 data;
switch(type) {
case NODE_GEOM_P: data = sd->P + sd->dP.dx; break;
case NODE_GEOM_uv: data = make_float3(sd->u + sd->du.dx, sd->v + sd->dv.dx, 0.0f); break;
default: svm_node_geometry(sd, stack, type, out_offset); return;
}
stack_store_float3(stack, out_offset, data);
#else
svm_node_geometry(sd, stack, type, out_offset);
#endif
}
__device void svm_node_geometry_bump_dy(ShaderData *sd, float *stack, uint type, uint out_offset)
{
#ifdef __RAY_DIFFERENTIALS__
float3 data;
switch(type) {
case NODE_GEOM_P: data = sd->P + sd->dP.dy; break;
case NODE_GEOM_uv: data = make_float3(sd->u + sd->du.dy, sd->v + sd->dv.dy, 0.0f); break;
default: svm_node_geometry(sd, stack, type, out_offset); return;
}
stack_store_float3(stack, out_offset, data);
#else
svm_node_geometry(sd, stack, type, out_offset);
#endif
}
CCL_NAMESPACE_END
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