Commit: 13ec512f4b9a9232d04a8995fab1837798ef4c39 Author: Kévin Dietrich Date: Mon Nov 16 17:34:13 2020 +0100 Branches: blender-v2.91-release https://developer.blender.org/rB13ec512f4b9a9232d04a8995fab1837798ef4c39
Fix T81983: volume tiles missing in Cycles renders The OpenVDB data structure can store voxel data in leaf nodes or tiles when all the nodes in a given region have a constant value. However, Cycles is using the leaf nodes to generate the acceleration structure for computing volume intersections which did not include constant tiles. To fix this, we simply voxelize all the active tiles prior to generating the volume bounding mesh. As we are using a MaskGrid, this will not allocate actual voxel buffers for each leaf, so the memory usage will be kept low. Differential Revision: https://developer.blender.org/D9557 Reviewed by: brecht, JacquesLucke =================================================================== M intern/cycles/render/volume.cpp =================================================================== diff --git a/intern/cycles/render/volume.cpp b/intern/cycles/render/volume.cpp index 9e633b27cc9..ebb9752756e 100644 --- a/intern/cycles/render/volume.cpp +++ b/intern/cycles/render/volume.cpp @@ -289,6 +289,10 @@ void VolumeMeshBuilder::create_mesh(vector<float3> &vertices, vector<int3> vertices_is; vector<QuadData> quads; + /* make sure we only have leaf nodes in the tree, as tiles are not handled by + * this algorithm */ + topology_grid->tree().voxelizeActiveTiles(); + generate_vertices_and_quads(vertices_is, quads); convert_object_space(vertices_is, vertices, face_overlap_avoidance); _______________________________________________ Bf-blender-cvs mailing list Bf-blender-cvs@blender.org https://lists.blender.org/mailman/listinfo/bf-blender-cvs
