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blender-archive/source/blender/draw/intern/draw_instance_data.h

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DRW: Add instance data memory manager. This is a special memory manager that keeps memory blocks ready to send as vbo data. Since we loose which memory block was used each DRWShadingGroup we need to redistribute them in the same order/size to avoid to realloc each frame. This is why DRWInstanceDatas are sorted in a list for each different data size.
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/*
* Copyright 2016, Blender Foundation.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* Contributor(s): Blender Institute
*
*/
/** \file draw_instance_data.h
* \ingroup draw
*/
#ifndef __DRAW_INSTANCE_DATA_H__
#define __DRAW_INSTANCE_DATA_H__
DRW: Add instance buffer manager. 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().
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#include "BLI_compiler_attrs.h"
#include "BLI_sys_types.h"
#include "GPU_batch.h"
DRW: Fix crash caused by fixing the leak (badly). Previous commit was af425f3f7a08c09f7fbc7076b364fac75163b296
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#define MAX_INSTANCE_DATA_SIZE 42 /* Can be adjusted for more */
DRW: Add instance data memory manager. This is a special memory manager that keeps memory blocks ready to send as vbo data. Since we loose which memory block was used each DRWShadingGroup we need to redistribute them in the same order/size to avoid to realloc each frame. This is why DRWInstanceDatas are sorted in a list for each different data size.
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typedef struct DRWInstanceData DRWInstanceData;
typedef struct DRWInstanceDataList DRWInstanceDataList;
DRW: Add instance buffer manager. 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().
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struct DRWShadingGroup;
DRW: Add instance data memory manager. This is a special memory manager that keeps memory blocks ready to send as vbo data. Since we loose which memory block was used each DRWShadingGroup we need to redistribute them in the same order/size to avoid to realloc each frame. This is why DRWInstanceDatas are sorted in a list for each different data size.
2018-01-09 14:09:14 +01:00
void *DRW_instance_data_next(DRWInstanceData *idata);
void *DRW_instance_data_get(DRWInstanceData *idata);
DRWInstanceData *DRW_instance_data_request(
DRWInstanceDataList *idatalist, unsigned int attrib_size, unsigned int instance_group);
DRW: Add instance buffer manager. 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().
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void DRW_instance_buffer_request(
DRWInstanceDataList *idatalist, Gwn_VertFormat *format, struct DRWShadingGroup *shgroup,
Gwn_Batch **r_batch, Gwn_VertBuf **r_vert, Gwn_PrimType type);
/* Upload all instance data to the GPU as soon as possible. */
void DRW_instance_buffer_finish(DRWInstanceDataList *idatalist);
DRW: Add instance data memory manager. This is a special memory manager that keeps memory blocks ready to send as vbo data. Since we loose which memory block was used each DRWShadingGroup we need to redistribute them in the same order/size to avoid to realloc each frame. This is why DRWInstanceDatas are sorted in a list for each different data size.
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void DRW_instance_data_list_reset(DRWInstanceDataList *idatalist);
void DRW_instance_data_list_free_unused(DRWInstanceDataList *idatalist);
void DRW_instance_data_list_resize(DRWInstanceDataList *idatalist);
#endif /* __DRAW_INSTANCE_DATA_H__ */
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