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/* SPDX-License-Identifier: GPL-2.0-or-later
* Copyright 2022 Blender Foundation. All rights reserved. */
/** \file
* \ingroup draw
*
* \brief Utilities for rendering attributes.
*/
#pragma once
#ifdef __cplusplus
# include <mutex>
#endif
#include "DNA_customdata_types.h"
#include "DNA_meshdata_types.h"
#include "BKE_attribute.h"
#include "BLI_sys_types.h"
#include "BLI_threads.h"
#include "BLI_utildefines.h"
#include "GPU_shader.h"
#include "GPU_vertex_format.h"
#ifdef __cplusplus
extern "C" {
#endif
typedef struct DRW_AttributeRequest {
eCustomDataType cd_type;
int layer_index;
eAttrDomain domain;
char attribute_name[64];
} DRW_AttributeRequest;
typedef struct DRW_Attributes {
DRW_AttributeRequest requests[GPU_MAX_ATTR];
int num_requests;
} DRW_Attributes;
typedef struct DRW_MeshCDMask {
uint32_t uv : 8;
uint32_t tan : 8;
uint32_t orco : 1;
uint32_t tan_orco : 1;
uint32_t sculpt_overlays : 1;
/**
* Edit uv layer is from the base edit mesh as modifiers could remove it. (see T68857)
*/
uint32_t edit_uv : 1;
} DRW_MeshCDMask;
/* Keep `DRW_MeshCDMask` struct within a `uint32_t`.
* bit-wise and atomic operations are used to compare and update the struct.
* See `mesh_cd_layers_type_*` functions. */
BLI_STATIC_ASSERT(sizeof(DRW_MeshCDMask) <= sizeof(uint32_t), "DRW_MeshCDMask exceeds 32 bits")
void drw_attributes_clear(DRW_Attributes *attributes);
#ifdef __cplusplus
void drw_attributes_merge(DRW_Attributes *dst,
const DRW_Attributes *src,
std::mutex &render_mutex);
#endif
/* Return true if all requests in b are in a. */
bool drw_attributes_overlap(const DRW_Attributes *a, const DRW_Attributes *b);
DRW_AttributeRequest *drw_attributes_add_request(DRW_Attributes *attrs,
const char *name,
eCustomDataType data_type,
int layer_index,
eAttrDomain domain);
bool drw_custom_data_match_attribute(const CustomData *custom_data,
const char *name,
int *r_layer_index,
eCustomDataType *r_type);
#ifdef __cplusplus
}
#endif
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