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/*
* Copyright 2011-2013 Blender Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
CCL_NAMESPACE_BEGIN
/* Geometry Node */
ccl_device_inline void svm_node_geometry(KernelGlobals *kg,
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 = primitive_tangent(kg, sd); 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
default: data = make_float3(0.0f, 0.0f, 0.0f);
}
stack_store_float3(stack, out_offset, data);
}
ccl_device void svm_node_geometry_bump_dx(KernelGlobals *kg, 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(kg, sd, stack, type, out_offset); return;
}
stack_store_float3(stack, out_offset, data);
#else
svm_node_geometry(kg, sd, stack, type, out_offset);
#endif
}
ccl_device void svm_node_geometry_bump_dy(KernelGlobals *kg, 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(kg, sd, stack, type, out_offset); return;
}
stack_store_float3(stack, out_offset, data);
#else
svm_node_geometry(kg, sd, stack, type, out_offset);
#endif
}
/* Object Info */
ccl_device void svm_node_object_info(KernelGlobals *kg, ShaderData *sd, float *stack, uint type, uint out_offset)
{
float data;
switch(type) {
case NODE_INFO_OB_LOCATION: {
stack_store_float3(stack, out_offset, object_location(kg, sd));
return;
}
case NODE_INFO_OB_INDEX: data = object_pass_id(kg, sd->object); break;
case NODE_INFO_MAT_INDEX: data = shader_pass_id(kg, sd); break;
case NODE_INFO_OB_RANDOM: data = object_random_number(kg, sd->object); break;
default: data = 0.0f; break;
}
stack_store_float(stack, out_offset, data);
}
/* Particle Info */
ccl_device void svm_node_particle_info(KernelGlobals *kg,
ShaderData *sd,
float *stack,
uint type,
uint out_offset)
{
switch(type) {
case NODE_INFO_PAR_INDEX: {
int particle_id = object_particle_id(kg, sd->object);
stack_store_float(stack, out_offset, particle_index(kg, particle_id));
break;
}
case NODE_INFO_PAR_AGE: {
int particle_id = object_particle_id(kg, sd->object);
stack_store_float(stack, out_offset, particle_age(kg, particle_id));
break;
}
case NODE_INFO_PAR_LIFETIME: {
int particle_id = object_particle_id(kg, sd->object);
stack_store_float(stack, out_offset, particle_lifetime(kg, particle_id));
break;
}
case NODE_INFO_PAR_LOCATION: {
int particle_id = object_particle_id(kg, sd->object);
stack_store_float3(stack, out_offset, particle_location(kg, particle_id));
break;
}
#if 0 /* XXX float4 currently not supported in SVM stack */
case NODE_INFO_PAR_ROTATION: {
int particle_id = object_particle_id(kg, sd->object);
stack_store_float4(stack, out_offset, particle_rotation(kg, particle_id));
break;
}
#endif
case NODE_INFO_PAR_SIZE: {
int particle_id = object_particle_id(kg, sd->object);
stack_store_float(stack, out_offset, particle_size(kg, particle_id));
break;
}
case NODE_INFO_PAR_VELOCITY: {
int particle_id = object_particle_id(kg, sd->object);
stack_store_float3(stack, out_offset, particle_velocity(kg, particle_id));
break;
}
case NODE_INFO_PAR_ANGULAR_VELOCITY: {
int particle_id = object_particle_id(kg, sd->object);
stack_store_float3(stack, out_offset, particle_angular_velocity(kg, particle_id));
break;
}
}
}
#ifdef __HAIR__
/* Hair Info */
ccl_device void svm_node_hair_info(KernelGlobals *kg,
ShaderData *sd,
float *stack,
uint type,
uint out_offset)
{
float data;
float3 data3;
switch(type) {
case NODE_INFO_CURVE_IS_STRAND: {
data = (sd->type & PRIMITIVE_ALL_CURVE) != 0;
stack_store_float(stack, out_offset, data);
break;
}
case NODE_INFO_CURVE_INTERCEPT:
break; /* handled as attribute */
case NODE_INFO_CURVE_THICKNESS: {
data = curve_thickness(kg, sd);
stack_store_float(stack, out_offset, data);
break;
}
/*case NODE_INFO_CURVE_FADE: {
data = sd->curve_transparency;
stack_store_float(stack, out_offset, data);
break;
}*/
case NODE_INFO_CURVE_TANGENT_NORMAL: {
data3 = curve_tangent_normal(kg, sd);
stack_store_float3(stack, out_offset, data3);
break;
}
}
}
#endif
CCL_NAMESPACE_END
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