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Cycles: change volume step size controls, auto adjust based on voxel size

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By default it will now set the step size to the voxel size for smoke and
volume objects, and 1/10th the bounding box for procedural volume shaders.

New settings are:
* Scene render/preview step rate: to globally adjust detail and performance
* Material step rate: multiplied with auto detected per-object step size
* World step size: distance to steo for world shader

Differential Revision: https://developer.blender.org/D1777
This commit is contained in:
Brecht Van Lommel
2020-03-07 14:38:52 +01:00
committed by Brecht Van Lommel
parent 9d20f170c7
commit 1162ba206d
23 changed files with 212 additions and 66 deletions
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2
intern/cycles/blender/blender_shader.cpp
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@@ -1260,6 +1260,7 @@ void BlenderSync::sync_materials(BL::Depsgraph &b_depsgraph, bool update_all)
shader->heterogeneous_volume = !get_boolean(cmat, "homogeneous_volume");
shader->volume_sampling_method = get_volume_sampling(cmat);
shader->volume_interpolation_method = get_volume_interpolation(cmat);
shader->volume_step_rate = get_float(cmat, "volume_step_rate");
shader->displacement_method = get_displacement_method(cmat);
shader->set_graph(graph);
@@ -1324,6 +1325,7 @@ void BlenderSync::sync_world(BL::Depsgraph &b_depsgraph, BL::SpaceView3D &b_v3d,
shader->heterogeneous_volume = !get_boolean(cworld, "homogeneous_volume");
shader->volume_sampling_method = get_volume_sampling(cworld);
shader->volume_interpolation_method = get_volume_interpolation(cworld);
shader->volume_step_rate = get_float(cworld, "volume_step_size");
}
else if (new_viewport_parameters.use_scene_world && b_world) {
BackgroundNode *background = new BackgroundNode();