94 lines
3.0 KiB
C
94 lines
3.0 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later
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* Copyright 2021 Blender Foundation. All rights reserved. */
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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_subdiv.h"
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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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/* Hardcoded for until GPU shaders are automatically generated, then we will have a more
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* programmatic way of detecting this. */
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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 Subdiv;
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struct SubdivSettings;
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struct SubsurfModifierData;
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/* Runtime subsurf modifier data, cached in modifier on evaluated meshes. */
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typedef struct SubsurfRuntimeData {
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/* Subdivision settings, exists before descriptor or mesh wrapper is created. */
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SubdivSettings settings;
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/* Cached subdivision surface descriptor, with topology and settings. */
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struct Subdiv *subdiv;
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bool set_by_draw_code;
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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 calc_loop_normals;
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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_totpoly;
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int stats_totloop;
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} SubsurfRuntimeData;
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bool BKE_subsurf_modifier_runtime_init(struct SubsurfModifierData *smd, 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(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 BKE_subsurf_modifier_has_gpu_subdiv(const struct Mesh *mesh);
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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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struct SubsurfRuntimeData *runtime_data, const struct 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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#ifdef __cplusplus
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}
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#endif
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