Brecht Van Lommel
ca9d65cc97
Instancing with geometry nodes uses just the evaluated Mesh, and ignores the Object that it came from. That meant that it would try to look up the subsurf modifier on the instancer object which does not have the subsurf modifier. Instead of storing a session UUID and looking up the modifier data, store a point to the subsurf modifier runtime data. Unlike the modifier data, this runtime data is preserved across depsgraph CoW. It must be for the subdiv descriptor contained in it to stay valid along with the draw cache. As a bonus, this moves various Mesh_Runtime variables into the subsurf runtime data, reducing memory usage for meshes not using subdivision surfaces. Also fixes T98693, issues with subdivision level >= 8 due to integer overflow. Differential Revision: https://developer.blender.org/D15184
94 lines
3.0 KiB
C++
94 lines
3.0 KiB
C++
/* SPDX-License-Identifier: GPL-2.0-or-later
|
|
* Copyright 2021 Blender Foundation. All rights reserved. */
|
|
|
|
/** \file
|
|
* \ingroup bke
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include "BKE_subdiv.h"
|
|
|
|
#include "BLI_sys_types.h"
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
/* Hardcoded for until GPU shaders are automatically generated, then we will have a more
|
|
* programmatic way of detecting this. */
|
|
#define MAX_GPU_SUBDIV_SSBOS 12
|
|
|
|
struct Mesh;
|
|
struct Object;
|
|
struct Scene;
|
|
struct Subdiv;
|
|
struct SubdivSettings;
|
|
struct SubsurfModifierData;
|
|
|
|
/* Runtime subsurf modifier data, cached in modifier on evaluated meshes. */
|
|
typedef struct SubsurfRuntimeData {
|
|
/* Subdivision settings, exists before descriptor or mesh wrapper is created. */
|
|
SubdivSettings settings;
|
|
|
|
/* Cached subdivision surface descriptor, with topology and settings. */
|
|
struct Subdiv *subdiv;
|
|
bool set_by_draw_code;
|
|
|
|
/* Cached mesh wrapper data, to be used for GPU subdiv or lazy evaluation on CPU. */
|
|
bool has_gpu_subdiv;
|
|
int resolution;
|
|
bool use_optimal_display;
|
|
bool calc_loop_normals;
|
|
bool use_loop_normals;
|
|
|
|
/* Cached from the draw code for stats display. */
|
|
int stats_totvert;
|
|
int stats_totedge;
|
|
int stats_totpoly;
|
|
int stats_totloop;
|
|
} SubsurfRuntimeData;
|
|
|
|
bool BKE_subsurf_modifier_runtime_init(struct SubsurfModifierData *smd, bool use_render_params);
|
|
|
|
bool BKE_subsurf_modifier_use_custom_loop_normals(const struct SubsurfModifierData *smd,
|
|
const struct Mesh *mesh);
|
|
|
|
/**
|
|
* Return true if GPU subdivision evaluation is disabled by force due to incompatible mesh or
|
|
* modifier settings. This will only return true if GPU subdivision is enabled in the preferences
|
|
* and supported by the GPU. It is mainly useful for showing UI messages.
|
|
*/
|
|
bool BKE_subsurf_modifier_force_disable_gpu_evaluation_for_mesh(
|
|
const struct SubsurfModifierData *smd, const struct Mesh *mesh);
|
|
/**
|
|
* \param skip_check_is_last: When true, we assume that the modifier passed is the last enabled
|
|
* modifier in the stack.
|
|
*/
|
|
bool BKE_subsurf_modifier_can_do_gpu_subdiv(const struct Scene *scene,
|
|
const struct Object *ob,
|
|
const struct Mesh *mesh,
|
|
const struct SubsurfModifierData *smd,
|
|
int required_mode);
|
|
|
|
bool BKE_subsurf_modifier_has_gpu_subdiv(const struct Mesh *mesh);
|
|
|
|
extern void (*BKE_subsurf_modifier_free_gpu_cache_cb)(struct Subdiv *subdiv);
|
|
|
|
/**
|
|
* Main goal of this function is to give usable subdivision surface descriptor
|
|
* which matches settings and topology.
|
|
*/
|
|
struct Subdiv *BKE_subsurf_modifier_subdiv_descriptor_ensure(
|
|
struct SubsurfRuntimeData *runtime_data, const struct Mesh *mesh, bool for_draw_code);
|
|
|
|
/**
|
|
* Return the #ModifierMode required for the evaluation of the subsurf modifier,
|
|
* which should be used to check if the modifier is enabled.
|
|
*/
|
|
int BKE_subsurf_modifier_eval_required_mode(bool is_final_render, bool is_edit_mode);
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|