0803119725
This includes much improved GPU rendering performance, viewport interactivity, new shadow catcher, revamped sampling settings, subsurface scattering anisotropy, new GPU volume sampling, improved PMJ sampling pattern, and more. Some features have also been removed or changed, breaking backwards compatibility. Including the removal of the OpenCL backend, for which alternatives are under development. Release notes and code docs: https://wiki.blender.org/wiki/Reference/Release_Notes/3.0/Cycles https://wiki.blender.org/wiki/Source/Render/Cycles Credits: * Sergey Sharybin * Brecht Van Lommel * Patrick Mours (OptiX backend) * Christophe Hery (subsurface scattering anisotropy) * William Leeson (PMJ sampling pattern) * Alaska (various fixes and tweaks) * Thomas Dinges (various fixes) For the full commit history, see the cycles-x branch. This squashes together all the changes since intermediate changes would often fail building or tests. Ref T87839, T87837, T87836 Fixes T90734, T89353, T80267, T80267, T77185, T69800
117 lines
3.6 KiB
C
117 lines
3.6 KiB
C
/*
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* Copyright 2011-2013 Blender Foundation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#pragma once
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CCL_NAMESPACE_BEGIN
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/* Attributes
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*
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* We support an arbitrary number of attributes on various mesh elements.
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* On vertices, triangles, curve keys, curves, meshes and volume grids.
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* Most of the code for attribute reading is in the primitive files.
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*
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* Lookup of attributes is different between OSL and SVM, as OSL is ustring
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* based while for SVM we use integer ids. */
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ccl_device_inline uint subd_triangle_patch(const KernelGlobals *kg, const ShaderData *sd);
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ccl_device_inline uint attribute_primitive_type(const KernelGlobals *kg, const ShaderData *sd)
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{
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if ((sd->type & PRIMITIVE_ALL_TRIANGLE) && subd_triangle_patch(kg, sd) != ~0) {
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return ATTR_PRIM_SUBD;
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}
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else {
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return ATTR_PRIM_GEOMETRY;
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}
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}
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ccl_device_inline AttributeDescriptor attribute_not_found()
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{
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const AttributeDescriptor desc = {
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ATTR_ELEMENT_NONE, (NodeAttributeType)0, 0, ATTR_STD_NOT_FOUND};
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return desc;
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}
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/* Find attribute based on ID */
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ccl_device_inline uint object_attribute_map_offset(const KernelGlobals *kg, int object)
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{
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return kernel_tex_fetch(__objects, object).attribute_map_offset;
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}
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ccl_device_inline AttributeDescriptor find_attribute(const KernelGlobals *kg,
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const ShaderData *sd,
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uint id)
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{
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if (sd->object == OBJECT_NONE) {
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return attribute_not_found();
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}
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/* for SVM, find attribute by unique id */
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uint attr_offset = object_attribute_map_offset(kg, sd->object);
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attr_offset += attribute_primitive_type(kg, sd);
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uint4 attr_map = kernel_tex_fetch(__attributes_map, attr_offset);
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while (attr_map.x != id) {
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if (UNLIKELY(attr_map.x == ATTR_STD_NONE)) {
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if (UNLIKELY(attr_map.y == 0)) {
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return attribute_not_found();
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}
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else {
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/* Chain jump to a different part of the table. */
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attr_offset = attr_map.z;
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}
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}
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else {
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attr_offset += ATTR_PRIM_TYPES;
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}
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attr_map = kernel_tex_fetch(__attributes_map, attr_offset);
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}
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AttributeDescriptor desc;
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desc.element = (AttributeElement)attr_map.y;
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if (sd->prim == PRIM_NONE && desc.element != ATTR_ELEMENT_MESH &&
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desc.element != ATTR_ELEMENT_VOXEL && desc.element != ATTR_ELEMENT_OBJECT) {
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return attribute_not_found();
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}
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/* return result */
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desc.offset = (attr_map.y == ATTR_ELEMENT_NONE) ? (int)ATTR_STD_NOT_FOUND : (int)attr_map.z;
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desc.type = (NodeAttributeType)(attr_map.w & 0xff);
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desc.flags = (AttributeFlag)(attr_map.w >> 8);
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return desc;
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}
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/* Transform matrix attribute on meshes */
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ccl_device Transform primitive_attribute_matrix(const KernelGlobals *kg,
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const ShaderData *sd,
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const AttributeDescriptor desc)
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{
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Transform tfm;
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tfm.x = kernel_tex_fetch(__attributes_float3, desc.offset + 0);
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tfm.y = kernel_tex_fetch(__attributes_float3, desc.offset + 1);
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tfm.z = kernel_tex_fetch(__attributes_float3, desc.offset + 2);
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return tfm;
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}
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CCL_NAMESPACE_END
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