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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 (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 = NODE_ATTR_FLOAT;
uint out_offset = 0;
AttributeDescriptor desc = svm_node_attr_init(kg, sd, node, &type, &out_offset);
#ifdef __VOLUME__
/* Volumes
* NOTE: moving this into its own node type might help improve performance. */
if (primitive_is_volume_attribute(sd, desc)) {
const float4 value = volume_attribute_float4(kg, sd, desc);
if (type == NODE_ATTR_FLOAT) {
const float f = volume_attribute_value_to_float(value);
stack_store_float(stack, out_offset, f);
}
else {
const float3 f = volume_attribute_value_to_float3(value);
stack_store_float3(stack, out_offset, f);
}
return;
}
#endif
/* Surface */
if (desc.type == NODE_ATTR_FLOAT) {
float f = primitive_surface_attribute_float(kg, sd, desc, NULL, NULL);
if (type == NODE_ATTR_FLOAT) {
stack_store_float(stack, out_offset, f);
}
else {
stack_store_float3(stack, out_offset, make_float3(f, f, f));
}
}
else if (desc.type == NODE_ATTR_FLOAT2) {
float2 f = primitive_surface_attribute_float2(kg, sd, desc, NULL, NULL);
if (type == NODE_ATTR_FLOAT) {
stack_store_float(stack, out_offset, f.x);
}
else {
stack_store_float3(stack, out_offset, make_float3(f.x, f.y, 0.0f));
}
}
else if (desc.type == NODE_ATTR_FLOAT4 || desc.type == NODE_ATTR_RGBA) {
float4 f = primitive_surface_attribute_float4(kg, sd, desc, NULL, NULL);
if (type == NODE_ATTR_FLOAT) {
stack_store_float(stack, out_offset, average(float4_to_float3(f)));
}
else {
stack_store_float3(stack, out_offset, float4_to_float3(f));
}
}
else {
float3 f = primitive_surface_attribute_float3(kg, sd, desc, NULL, NULL);
if (type == NODE_ATTR_FLOAT) {
stack_store_float(stack, out_offset, average(f));
}
else {
stack_store_float3(stack, out_offset, f);
}
}
}
ccl_device void svm_node_attr_bump_dx(KernelGlobals *kg, ShaderData *sd, float *stack, uint4 node)
{
NodeAttributeType type = NODE_ATTR_FLOAT;
uint out_offset = 0;
AttributeDescriptor desc = svm_node_attr_init(kg, sd, node, &type, &out_offset);
#ifdef __VOLUME__
/* Volume */
if (primitive_is_volume_attribute(sd, desc)) {
if (type == NODE_ATTR_FLOAT) {
stack_store_float(stack, out_offset, 0.0f);
}
else {
stack_store_float3(stack, out_offset, make_float3(0.0f, 0.0f, 0.0f));
}
return;
}
#endif
/* Surface */
if (desc.type == NODE_ATTR_FLOAT) {
float dx;
float f = primitive_surface_attribute_float(kg, sd, desc, &dx, NULL);
if (type == NODE_ATTR_FLOAT) {
stack_store_float(stack, out_offset, f + dx);
}
else {
stack_store_float3(stack, out_offset, make_float3(f + dx, f + dx, f + dx));
}
}
else if (desc.type == NODE_ATTR_FLOAT2) {
float2 dx;
float2 f = primitive_surface_attribute_float2(kg, sd, desc, &dx, NULL);
if (type == NODE_ATTR_FLOAT) {
stack_store_float(stack, out_offset, f.x + dx.x);
}
else {
stack_store_float3(stack, out_offset, make_float3(f.x + dx.x, f.y + dx.y, 0.0f));
}
}
else if (desc.type == NODE_ATTR_FLOAT4 || desc.type == NODE_ATTR_RGBA) {
float4 dx;
float4 f = primitive_surface_attribute_float4(kg, sd, desc, &dx, NULL);
if (type == NODE_ATTR_FLOAT) {
stack_store_float(stack, out_offset, average(float4_to_float3(f + dx)));
}
else {
stack_store_float3(stack, out_offset, float4_to_float3(f + dx));
}
}
else {
float3 dx;
float3 f = primitive_surface_attribute_float3(kg, sd, desc, &dx, NULL);
if (type == NODE_ATTR_FLOAT) {
stack_store_float(stack, out_offset, average(f + dx));
}
else {
stack_store_float3(stack, out_offset, f + dx);
}
}
}
ccl_device void svm_node_attr_bump_dy(KernelGlobals *kg, ShaderData *sd, float *stack, uint4 node)
{
NodeAttributeType type = NODE_ATTR_FLOAT;
uint out_offset = 0;
AttributeDescriptor desc = svm_node_attr_init(kg, sd, node, &type, &out_offset);
#ifdef __VOLUME__
/* Volume */
if (primitive_is_volume_attribute(sd, desc)) {
if (type == NODE_ATTR_FLOAT) {
stack_store_float(stack, out_offset, 0.0f);
}
else {
stack_store_float3(stack, out_offset, make_float3(0.0f, 0.0f, 0.0f));
}
return;
}
#endif
/* Surface */
if (desc.type == NODE_ATTR_FLOAT) {
float dy;
float f = primitive_surface_attribute_float(kg, sd, desc, NULL, &dy);
if (type == NODE_ATTR_FLOAT) {
stack_store_float(stack, out_offset, f + dy);
}
else {
stack_store_float3(stack, out_offset, make_float3(f + dy, f + dy, f + dy));
}
}
else if (desc.type == NODE_ATTR_FLOAT2) {
float2 dy;
float2 f = primitive_surface_attribute_float2(kg, sd, desc, NULL, &dy);
if (type == NODE_ATTR_FLOAT) {
stack_store_float(stack, out_offset, f.x + dy.x);
}
else {
stack_store_float3(stack, out_offset, make_float3(f.x + dy.x, f.y + dy.y, 0.0f));
}
}
else if (desc.type == NODE_ATTR_FLOAT4 || desc.type == NODE_ATTR_RGBA) {
float4 dy;
float4 f = primitive_surface_attribute_float4(kg, sd, desc, NULL, &dy);
if (type == NODE_ATTR_FLOAT) {
stack_store_float(stack, out_offset, average(float4_to_float3(f + dy)));
}
else {
stack_store_float3(stack, out_offset, float4_to_float3(f + dy));
}
}
else {
float3 dy;
float3 f = primitive_surface_attribute_float3(kg, sd, desc, NULL, &dy);
if (type == NODE_ATTR_FLOAT) {
stack_store_float(stack, out_offset, average(f + dy));
}
else {
stack_store_float3(stack, out_offset, f + dy);
}
}
}
CCL_NAMESPACE_END
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