Clément Foucault
629a874817
This manager allows to distribute existing batches for instancing attributes. This reduce the number of batches creation. Querying a batch is done with a vertex format. This format should be static so that it's pointer never changes (because we are using this pointer as identifier [we don't want to check the full format that would be too slow]). This might make the original Instance Data manager useless but it's currently used by DRW_object_engine_data_ensure().
58 lines
2.0 KiB
C++
58 lines
2.0 KiB
C++
/*
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* Copyright 2016, Blender Foundation.
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*
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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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* Contributor(s): Blender Institute
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*
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*/
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/** \file draw_instance_data.h
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* \ingroup draw
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*/
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#ifndef __DRAW_INSTANCE_DATA_H__
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#define __DRAW_INSTANCE_DATA_H__
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#include "BLI_compiler_attrs.h"
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#include "BLI_sys_types.h"
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#include "GPU_batch.h"
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#define MAX_INSTANCE_DATA_SIZE 42 /* Can be adjusted for more */
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typedef struct DRWInstanceData DRWInstanceData;
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typedef struct DRWInstanceDataList DRWInstanceDataList;
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struct DRWShadingGroup;
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void *DRW_instance_data_next(DRWInstanceData *idata);
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void *DRW_instance_data_get(DRWInstanceData *idata);
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DRWInstanceData *DRW_instance_data_request(
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DRWInstanceDataList *idatalist, unsigned int attrib_size, unsigned int instance_group);
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void DRW_instance_buffer_request(
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DRWInstanceDataList *idatalist, Gwn_VertFormat *format, struct DRWShadingGroup *shgroup,
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Gwn_Batch **r_batch, Gwn_VertBuf **r_vert, Gwn_PrimType type);
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/* Upload all instance data to the GPU as soon as possible. */
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void DRW_instance_buffer_finish(DRWInstanceDataList *idatalist);
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void DRW_instance_data_list_reset(DRWInstanceDataList *idatalist);
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void DRW_instance_data_list_free_unused(DRWInstanceDataList *idatalist);
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void DRW_instance_data_list_resize(DRWInstanceDataList *idatalist);
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#endif /* __DRAW_INSTANCE_DATA_H__ */
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