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/* SPDX-License-Identifier: GPL-2.0-or-later
* Copyright 2022 Blender Foundation. All rights reserved. */
#include "draw_attributes.h"
/* Return true if the given DRW_AttributeRequest is already in the requests. */
static bool drw_attributes_has_request(const DRW_Attributes *requests, DRW_AttributeRequest req)
{
for (int i = 0; i < requests->num_requests; i++) {
const DRW_AttributeRequest src_req = requests->requests[i];
if (src_req.domain != req.domain) {
continue;
}
if (src_req.layer_index != req.layer_index) {
continue;
}
if (src_req.cd_type != req.cd_type) {
continue;
}
return true;
}
return false;
}
static void drw_attributes_merge_requests(const DRW_Attributes *src_requests,
DRW_Attributes *dst_requests)
{
for (int i = 0; i < src_requests->num_requests; i++) {
if (dst_requests->num_requests == GPU_MAX_ATTR) {
return;
}
if (drw_attributes_has_request(dst_requests, src_requests->requests[i])) {
continue;
}
dst_requests->requests[dst_requests->num_requests] = src_requests->requests[i];
dst_requests->num_requests += 1;
}
}
void drw_attributes_clear(DRW_Attributes *attributes)
{
memset(attributes, 0, sizeof(DRW_Attributes));
}
void drw_attributes_merge(DRW_Attributes *dst,
const DRW_Attributes *src,
ThreadMutex *render_mutex)
{
BLI_mutex_lock(render_mutex);
drw_attributes_merge_requests(src, dst);
BLI_mutex_unlock(render_mutex);
}
bool drw_attributes_overlap(const DRW_Attributes *a, const DRW_Attributes *b)
{
for (int i = 0; i < b->num_requests; i++) {
if (!drw_attributes_has_request(a, b->requests[i])) {
return false;
}
}
return true;
}
DRW_AttributeRequest *drw_attributes_add_request(DRW_Attributes *attrs,
eCustomDataType type,
int layer,
eAttrDomain domain)
{
if (attrs->num_requests >= GPU_MAX_ATTR) {
return nullptr;
}
DRW_AttributeRequest *req = &attrs->requests[attrs->num_requests];
req->cd_type = type;
req->layer_index = layer;
req->domain = domain;
attrs->num_requests += 1;
return req;
}
bool drw_custom_data_match_attribute(const CustomData *custom_data,
const char *name,
int *r_layer_index,
eCustomDataType *r_type)
{
const eCustomDataType possible_attribute_types[7] = {
CD_PROP_BOOL,
CD_PROP_INT8,
CD_PROP_INT32,
CD_PROP_FLOAT,
CD_PROP_FLOAT2,
CD_PROP_FLOAT3,
CD_PROP_COLOR,
};
for (int i = 0; i < ARRAY_SIZE(possible_attribute_types); i++) {
const eCustomDataType attr_type = possible_attribute_types[i];
int layer_index = CustomData_get_named_layer(custom_data, attr_type, name);
if (layer_index == -1) {
continue;
}
*r_layer_index = layer_index;
*r_type = attr_type;
return true;
}
return false;
}
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