c8b4e0c0b5
These features are complicated to support on GPU and hardly compatible with subdivision in the first place. In the future, with T68891 and T68893, subdivision and custom smooth shading will be separate workflows. For now, and to better prepare for this future (although long term plan), we should discourage workflows mixing subdivision and custom smooth normals, and as such, this disables GPU subdivision when autosmoothing or custom split normals are used. This also adds a message in the modifier's UI to indicate that GPU subdivision will be disabled if autosmooth or custom split normals are used on the mesh. Differential Revision: https://developer.blender.org/D14194
92 lines
3.4 KiB
C
92 lines
3.4 KiB
C
/*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* The Original Code is Copyright (C) 2021 by Blender Foundation.
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* All rights reserved.
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*/
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/** \file
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* \ingroup bke
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*/
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#pragma once
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#include "BLI_sys_types.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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struct Mesh;
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struct Object;
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struct Scene;
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struct Subdiv;
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struct SubdivSettings;
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struct SubsurfModifierData;
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void BKE_subsurf_modifier_subdiv_settings_init(struct SubdivSettings *settings,
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const struct SubsurfModifierData *smd,
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bool use_render_params);
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bool BKE_subsurf_modifier_use_custom_loop_normals(const struct SubsurfModifierData *smd,
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const struct Mesh *mesh);
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/**
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* Return true if GPU subdivision evaluation is disabled by force due to incompatible mesh or
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* modifier settings. This will only return true if GPU subdivision is enabled in the preferences
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* and supported by the GPU. It is mainly useful for showing UI messages.
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*/
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bool BKE_subsurf_modifier_force_disable_gpu_evaluation_for_mesh(
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const struct SubsurfModifierData *smd, const struct Mesh *mesh);
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/**
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* \param skip_check_is_last: When true, we assume that the modifier passed is the last enabled
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* modifier in the stack.
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*/
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bool BKE_subsurf_modifier_can_do_gpu_subdiv_ex(const struct Scene *scene,
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const struct Object *ob,
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const struct Mesh *mesh,
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const struct SubsurfModifierData *smd,
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int required_mode,
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bool skip_check_is_last);
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bool BKE_subsurf_modifier_can_do_gpu_subdiv(const struct Scene *scene,
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const struct Object *ob,
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const struct Mesh *mesh,
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int required_mode);
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extern void (*BKE_subsurf_modifier_free_gpu_cache_cb)(struct Subdiv *subdiv);
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/**
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* Main goal of this function is to give usable subdivision surface descriptor
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* which matches settings and topology.
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*/
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struct Subdiv *BKE_subsurf_modifier_subdiv_descriptor_ensure(
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const struct SubsurfModifierData *smd,
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const struct SubdivSettings *subdiv_settings,
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const struct Mesh *mesh,
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bool for_draw_code);
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struct SubsurfRuntimeData *BKE_subsurf_modifier_ensure_runtime(struct SubsurfModifierData *smd);
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/**
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* Return the #ModifierMode required for the evaluation of the subsurf modifier,
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* which should be used to check if the modifier is enabled.
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*/
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int BKE_subsurf_modifier_eval_required_mode(bool is_final_render, bool is_edit_mode);
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#ifdef __cplusplus
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}
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#endif
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