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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
/* Attribute Node */
ccl_device AttributeDescriptor svm_node_attr_init(KernelGlobals *kg, ShaderData *sd,
uint4 node, NodeAttributeType *type,
uint *out_offset)
{
*out_offset = node.z;
*type = (NodeAttributeType)node.w;
AttributeDescriptor desc;
if(ccl_fetch(sd, object) != OBJECT_NONE) {
desc = find_attribute(kg, sd, node.y);
if(desc.offset == ATTR_STD_NOT_FOUND) {
desc = attribute_not_found();
desc.offset = 0;
desc.type = (NodeAttributeType)node.w;
}
}
else {
/* background */
desc = attribute_not_found();
desc.offset = 0;
desc.type = (NodeAttributeType)node.w;
}
return desc;
}
ccl_device void svm_node_attr(KernelGlobals *kg, ShaderData *sd, float *stack, uint4 node)
{
NodeAttributeType type;
uint out_offset;
AttributeDescriptor desc = svm_node_attr_init(kg, sd, node, &type, &out_offset);
/* fetch and store attribute */
if(type == NODE_ATTR_FLOAT) {
if(desc.type == NODE_ATTR_FLOAT) {
float f = primitive_attribute_float(kg, sd, desc, NULL, NULL);
stack_store_float(stack, out_offset, f);
}
else {
float3 f = primitive_attribute_float3(kg, sd, desc, NULL, NULL);
stack_store_float(stack, out_offset, average(f));
}
}
else {
if(desc.type == NODE_ATTR_FLOAT3) {
float3 f = primitive_attribute_float3(kg, sd, desc, NULL, NULL);
stack_store_float3(stack, out_offset, f);
}
else {
float f = primitive_attribute_float(kg, sd, desc, NULL, NULL);
stack_store_float3(stack, out_offset, make_float3(f, f, f));
}
}
}
#ifndef __KERNEL_CUDA__
ccl_device
#else
ccl_device_noinline
#endif
void svm_node_attr_bump_dx(KernelGlobals *kg, ShaderData *sd, float *stack, uint4 node)
{
NodeAttributeType type;
uint out_offset;
AttributeDescriptor desc = svm_node_attr_init(kg, sd, node, &type, &out_offset);
/* fetch and store attribute */
if(type == NODE_ATTR_FLOAT) {
if(desc.type == NODE_ATTR_FLOAT) {
float dx;
float f = primitive_attribute_float(kg, sd, desc, &dx, NULL);
stack_store_float(stack, out_offset, f+dx);
}
else {
float3 dx;
float3 f = primitive_attribute_float3(kg, sd, desc, &dx, NULL);
stack_store_float(stack, out_offset, average(f+dx));
}
}
else {
if(desc.type == NODE_ATTR_FLOAT3) {
float3 dx;
float3 f = primitive_attribute_float3(kg, sd, desc, &dx, NULL);
stack_store_float3(stack, out_offset, f+dx);
}
else {
float dx;
float f = primitive_attribute_float(kg, sd, desc, &dx, NULL);
stack_store_float3(stack, out_offset, make_float3(f+dx, f+dx, f+dx));
}
}
}
#ifndef __KERNEL_CUDA__
ccl_device
#else
ccl_device_noinline
#endif
void svm_node_attr_bump_dy(KernelGlobals *kg,
ShaderData *sd,
float *stack,
uint4 node)
{
NodeAttributeType type;
uint out_offset;
AttributeDescriptor desc = svm_node_attr_init(kg, sd, node, &type, &out_offset);
/* fetch and store attribute */
if(type == NODE_ATTR_FLOAT) {
if(desc.type == NODE_ATTR_FLOAT) {
float dy;
float f = primitive_attribute_float(kg, sd, desc, NULL, &dy);
stack_store_float(stack, out_offset, f+dy);
}
else {
float3 dy;
float3 f = primitive_attribute_float3(kg, sd, desc, NULL, &dy);
stack_store_float(stack, out_offset, average(f+dy));
}
}
else {
if(desc.type == NODE_ATTR_FLOAT3) {
float3 dy;
float3 f = primitive_attribute_float3(kg, sd, desc, NULL, &dy);
stack_store_float3(stack, out_offset, f+dy);
}
else {
float dy;
float f = primitive_attribute_float(kg, sd, desc, NULL, &dy);
stack_store_float3(stack, out_offset, make_float3(f+dy, f+dy, f+dy));
}
}
}
CCL_NAMESPACE_END
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