diff options
Diffstat (limited to 'intern/cycles/kernel/svm/svm_attribute.h')
| -rw-r--r-- | intern/cycles/kernel/svm/svm_attribute.h | 154 |
1 files changed, 154 insertions, 0 deletions
diff --git a/intern/cycles/kernel/svm/svm_attribute.h b/intern/cycles/kernel/svm/svm_attribute.h new file mode 100644 index 00000000000..3a94f08d42f --- /dev/null +++ b/intern/cycles/kernel/svm/svm_attribute.h @@ -0,0 +1,154 @@ +/* + * 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 + +/* Attribute Node */ + +__device void svm_node_attr_init(KernelGlobals *kg, ShaderData *sd, + uint4 node, NodeAttributeType *type, + NodeAttributeType *mesh_type, AttributeElement *elem, uint *offset, uint *out_offset) +{ + if(sd->object != ~0) { + /* find attribute by unique id */ + uint id = node.y; + uint attr_offset = sd->object*kernel_data.bvh.attributes_map_stride; + uint4 attr_map = kernel_tex_fetch(__attributes_map, attr_offset); + + while(attr_map.x != id) + attr_map = kernel_tex_fetch(__attributes_map, ++attr_offset); + + /* return result */ + *elem = (AttributeElement)attr_map.y; + *offset = attr_map.z; + *mesh_type = (NodeAttributeType)attr_map.w; + } + else { + /* background */ + *elem = ATTR_ELEMENT_NONE; + *offset = 0; + *mesh_type = (NodeAttributeType)node.w; + } + + *out_offset = node.z; + *type = (NodeAttributeType)node.w; +} + +__device void svm_node_attr(KernelGlobals *kg, ShaderData *sd, float *stack, uint4 node) +{ + NodeAttributeType type, mesh_type; + AttributeElement elem; + uint offset, out_offset; + + svm_node_attr_init(kg, sd, node, &type, &mesh_type, &elem, &offset, &out_offset); + + /* fetch and store attribute */ + if(type == NODE_ATTR_FLOAT) { + if(mesh_type == NODE_ATTR_FLOAT) { + float f = triangle_attribute_float(kg, sd, elem, offset, NULL, NULL); + stack_store_float(stack, out_offset, f); + } + else { + float3 f = triangle_attribute_float3(kg, sd, elem, offset, NULL, NULL); + stack_store_float(stack, out_offset, average(f)); + } + } + else { + if(mesh_type == NODE_ATTR_FLOAT3) { + float3 f = triangle_attribute_float3(kg, sd, elem, offset, NULL, NULL); + stack_store_float3(stack, out_offset, f); + } + else { + float f = triangle_attribute_float(kg, sd, elem, offset, NULL, NULL); + stack_store_float3(stack, out_offset, make_float3(f, f, f)); + } + } +} + +__device void svm_node_attr_bump_dx(KernelGlobals *kg, ShaderData *sd, float *stack, uint4 node) +{ + NodeAttributeType type, mesh_type; + AttributeElement elem; + uint offset, out_offset; + + svm_node_attr_init(kg, sd, node, &type, &mesh_type, &elem, &offset, &out_offset); + + /* fetch and store attribute */ + if(type == NODE_ATTR_FLOAT) { + if(mesh_type == NODE_ATTR_FLOAT) { + float dx; + float f = triangle_attribute_float(kg, sd, elem, offset, &dx, NULL); + stack_store_float(stack, out_offset, f+dx); + } + else { + float3 dx; + float3 f = triangle_attribute_float3(kg, sd, elem, offset, &dx, NULL); + stack_store_float(stack, out_offset, average(f+dx)); + } + } + else { + if(mesh_type == NODE_ATTR_FLOAT3) { + float3 dx; + float3 f = triangle_attribute_float3(kg, sd, elem, offset, &dx, NULL); + stack_store_float3(stack, out_offset, f+dx); + } + else { + float dx; + float f = triangle_attribute_float(kg, sd, elem, offset, &dx, NULL); + stack_store_float3(stack, out_offset, make_float3(f+dx, f+dx, f+dx)); + } + } +} + +__device void svm_node_attr_bump_dy(KernelGlobals *kg, ShaderData *sd, float *stack, uint4 node) +{ + NodeAttributeType type, mesh_type; + AttributeElement elem; + uint offset, out_offset; + + svm_node_attr_init(kg, sd, node, &type, &mesh_type, &elem, &offset, &out_offset); + + /* fetch and store attribute */ + if(type == NODE_ATTR_FLOAT) { + if(mesh_type == NODE_ATTR_FLOAT) { + float dy; + float f = triangle_attribute_float(kg, sd, elem, offset, NULL, &dy); + stack_store_float(stack, out_offset, f+dy); + } + else { + float3 dy; + float3 f = triangle_attribute_float3(kg, sd, elem, offset, NULL, &dy); + stack_store_float(stack, out_offset, average(f+dy)); + } + } + else { + if(mesh_type == NODE_ATTR_FLOAT3) { + float3 dy; + float3 f = triangle_attribute_float3(kg, sd, elem, offset, NULL, &dy); + stack_store_float3(stack, out_offset, f+dy); + } + else { + float dy; + float f = triangle_attribute_float(kg, sd, elem, offset, NULL, &dy); + stack_store_float3(stack, out_offset, make_float3(f+dy, f+dy, f+dy)); + } + } +} + +CCL_NAMESPACE_END + |