0609b4bb49
The problem is that depsgraph evaluation happens before the OpenGL context is initialized, and so modifier evaluation happens without GPU subdivision. Later the BKE_subsurf_modifier_can_do_gpu_subdiv test in the draw code gives a different result. This just checks if the mesh has information for GPU subdivision in the draw code, and if so uses it. This is only set if the test for supported GPU subdivision passes in the modifier evaluation. Additionally it may be good to perform OpenGL context initialization earlier so background render can take advantage of GPU subdivision, but this is more complicated. Differential Revision: https://developer.blender.org/D14969
76 lines
2.6 KiB
C
76 lines
2.6 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 "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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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(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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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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