104 lines
3.5 KiB
C++
104 lines
3.5 KiB
C++
/* SPDX-FileCopyrightText: 2021 Blender Authors
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*
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* SPDX-License-Identifier: GPL-2.0-or-later */
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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 "BKE_mesh_types.hh"
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#include "BKE_subdiv.hh"
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#include "DNA_mesh_types.h"
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/**
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* Hard-coded for until GPU shaders are automatically generated,
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* then we will have a more programmatic way of detecting this.
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*/
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#define MAX_GPU_SUBDIV_SSBOS 12
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struct Mesh;
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struct Object;
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struct Scene;
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struct SubsurfModifierData;
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namespace blender::bke::subdiv {
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struct Subdiv;
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struct Settings;
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} // namespace blender::bke::subdiv
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/** Runtime subsurf modifier data, cached in modifier on evaluated meshes. */
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struct SubsurfRuntimeData {
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/** Subdivision settings, exists before descriptor or mesh wrapper is created. */
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blender::bke::subdiv::Settings settings;
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/** Cached subdivision surface descriptor, with topology and settings. */
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blender::bke::subdiv::Subdiv *subdiv_cpu;
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blender::bke::subdiv::Subdiv *subdiv_gpu;
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/**
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* Recent usage markers for UI diagnostics. To avoid UI flicker due to races
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* between evaluation and UI redraw, they are set to 2 when an evaluator is used,
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* and count down every frame.
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*/
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char used_cpu, used_gpu;
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/** Cached mesh wrapper data, to be used for GPU subdiv or lazy evaluation on CPU. */
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bool has_gpu_subdiv;
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int resolution;
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bool use_optimal_display;
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bool use_loop_normals;
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/** Cached from the draw code for stats display. */
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int stats_totvert;
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int stats_totedge;
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int stats_faces_num;
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int stats_totloop;
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};
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blender::bke::subdiv::Settings BKE_subsurf_modifier_settings_init(const SubsurfModifierData *smd,
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bool use_render_params);
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bool BKE_subsurf_modifier_runtime_init(SubsurfModifierData *smd, bool use_render_params);
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bool BKE_subsurf_modifier_use_custom_loop_normals(const SubsurfModifierData *smd,
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const Mesh *mesh);
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bool BKE_subsurf_modifier_has_split_normals(const SubsurfModifierData *smd, const 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(const SubsurfModifierData *smd,
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const Mesh *mesh);
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/**
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* Return true if GPU subdivision can be used for this modifier. It does not check if
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* the modifier is in the right place in the modifier stack, only if the settings and
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* GPU are compatible.
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*/
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bool BKE_subsurf_modifier_can_do_gpu_subdiv(const SubsurfModifierData *smd, const Mesh *mesh);
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inline bool BKE_subsurf_modifier_has_gpu_subdiv(const Mesh *mesh)
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{
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SubsurfRuntimeData *runtime_data = mesh->runtime->subsurf_runtime_data;
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return runtime_data && runtime_data->has_gpu_subdiv;
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}
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extern void (*BKE_subsurf_modifier_free_gpu_cache_cb)(blender::bke::subdiv::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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blender::bke::subdiv::Subdiv *BKE_subsurf_modifier_subdiv_descriptor_ensure(
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SubsurfRuntimeData *runtime_data, const Mesh *mesh, bool for_draw_code);
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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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