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/* SPDX-License-Identifier: GPL-2.0-or-later
* Copyright 2021 Blender Foundation. All rights reserved. */
/** \file
* \ingroup draw
*/
#include "extract_mesh.hh"
namespace blender::draw {
/* ---------------------------------------------------------------------- */
/** \name Extract Face-dots Normal and edit flag
* \{ */
#define NOR_AND_FLAG_DEFAULT 0
#define NOR_AND_FLAG_SELECT 1
#define NOR_AND_FLAG_ACTIVE -1
#define NOR_AND_FLAG_HIDDEN -2
static void extract_fdots_nor_init(const MeshRenderData *mr,
struct MeshBatchCache *UNUSED(cache),
void *buf,
void *UNUSED(tls_data))
{
GPUVertBuf *vbo = static_cast<GPUVertBuf *>(buf);
static GPUVertFormat format = {0};
if (format.attr_len == 0) {
GPU_vertformat_attr_add(&format, "norAndFlag", GPU_COMP_I10, 4, GPU_FETCH_INT_TO_FLOAT_UNIT);
}
GPU_vertbuf_init_with_format(vbo, &format);
GPU_vertbuf_data_alloc(vbo, mr->poly_len);
}
static void extract_fdots_nor_finish(const MeshRenderData *mr,
struct MeshBatchCache *UNUSED(cache),
void *buf,
void *UNUSED(data))
{
GPUVertBuf *vbo = static_cast<GPUVertBuf *>(buf);
static float invalid_normal[3] = {0.0f, 0.0f, 0.0f};
GPUPackedNormal *nor = (GPUPackedNormal *)GPU_vertbuf_get_data(vbo);
BMFace *efa;
/* Quicker than doing it for each loop. */
if (mr->extract_type == MR_EXTRACT_BMESH) {
for (int f = 0; f < mr->poly_len; f++) {
efa = BM_face_at_index(mr->bm, f);
const bool is_face_hidden = BM_elem_flag_test(efa, BM_ELEM_HIDDEN);
if (is_face_hidden || (mr->extract_type == MR_EXTRACT_MAPPED && mr->p_origindex &&
mr->p_origindex[f] == ORIGINDEX_NONE)) {
nor[f] = GPU_normal_convert_i10_v3(invalid_normal);
nor[f].w = NOR_AND_FLAG_HIDDEN;
}
else {
nor[f] = GPU_normal_convert_i10_v3(bm_face_no_get(mr, efa));
/* Select / Active Flag. */
nor[f].w = (BM_elem_flag_test(efa, BM_ELEM_SELECT) ?
((efa == mr->efa_act) ? NOR_AND_FLAG_ACTIVE : NOR_AND_FLAG_SELECT) :
NOR_AND_FLAG_DEFAULT);
}
}
}
else {
for (int f = 0; f < mr->poly_len; f++) {
efa = bm_original_face_get(mr, f);
const bool is_face_hidden = efa && BM_elem_flag_test(efa, BM_ELEM_HIDDEN);
if (is_face_hidden || (mr->extract_type == MR_EXTRACT_MAPPED && mr->p_origindex &&
mr->p_origindex[f] == ORIGINDEX_NONE)) {
nor[f] = GPU_normal_convert_i10_v3(invalid_normal);
nor[f].w = NOR_AND_FLAG_HIDDEN;
}
else {
nor[f] = GPU_normal_convert_i10_v3(bm_face_no_get(mr, efa));
/* Select / Active Flag. */
nor[f].w = (BM_elem_flag_test(efa, BM_ELEM_SELECT) ?
((efa == mr->efa_act) ? NOR_AND_FLAG_ACTIVE : NOR_AND_FLAG_SELECT) :
NOR_AND_FLAG_DEFAULT);
}
}
}
}
constexpr MeshExtract create_extractor_fdots_nor()
{
MeshExtract extractor = {nullptr};
extractor.init = extract_fdots_nor_init;
extractor.finish = extract_fdots_nor_finish;
extractor.data_type = MR_DATA_LOOP_NOR;
extractor.data_size = 0;
extractor.use_threading = false;
extractor.mesh_buffer_offset = offsetof(MeshBufferList, vbo.fdots_nor);
return extractor;
}
/** \} */
/* ---------------------------------------------------------------------- */
/** \name Extract Face-dots High Quality Normal and edit flag
* \{ */
static void extract_fdots_nor_hq_init(const MeshRenderData *mr,
struct MeshBatchCache *UNUSED(cache),
void *buf,
void *UNUSED(tls_data))
{
GPUVertBuf *vbo = static_cast<GPUVertBuf *>(buf);
static GPUVertFormat format = {0};
if (format.attr_len == 0) {
GPU_vertformat_attr_add(&format, "norAndFlag", GPU_COMP_I16, 4, GPU_FETCH_INT_TO_FLOAT_UNIT);
}
GPU_vertbuf_init_with_format(vbo, &format);
GPU_vertbuf_data_alloc(vbo, mr->poly_len);
}
static void extract_fdots_nor_hq_finish(const MeshRenderData *mr,
struct MeshBatchCache *UNUSED(cache),
void *buf,
void *UNUSED(data))
{
GPUVertBuf *vbo = static_cast<GPUVertBuf *>(buf);
static float invalid_normal[3] = {0.0f, 0.0f, 0.0f};
short *nor = (short *)GPU_vertbuf_get_data(vbo);
BMFace *efa;
/* Quicker than doing it for each loop. */
if (mr->extract_type == MR_EXTRACT_BMESH) {
for (int f = 0; f < mr->poly_len; f++) {
efa = BM_face_at_index(mr->bm, f);
const bool is_face_hidden = BM_elem_flag_test(efa, BM_ELEM_HIDDEN);
if (is_face_hidden || (mr->extract_type == MR_EXTRACT_MAPPED && mr->p_origindex &&
mr->p_origindex[f] == ORIGINDEX_NONE)) {
normal_float_to_short_v3(&nor[f * 4], invalid_normal);
nor[f * 4 + 3] = NOR_AND_FLAG_HIDDEN;
}
else {
normal_float_to_short_v3(&nor[f * 4], bm_face_no_get(mr, efa));
/* Select / Active Flag. */
nor[f * 4 + 3] = (BM_elem_flag_test(efa, BM_ELEM_SELECT) ?
((efa == mr->efa_act) ? NOR_AND_FLAG_ACTIVE : NOR_AND_FLAG_SELECT) :
NOR_AND_FLAG_DEFAULT);
}
}
}
else {
for (int f = 0; f < mr->poly_len; f++) {
efa = bm_original_face_get(mr, f);
const bool is_face_hidden = efa && BM_elem_flag_test(efa, BM_ELEM_HIDDEN);
if (is_face_hidden || (mr->extract_type == MR_EXTRACT_MAPPED && mr->p_origindex &&
mr->p_origindex[f] == ORIGINDEX_NONE)) {
normal_float_to_short_v3(&nor[f * 4], invalid_normal);
nor[f * 4 + 3] = NOR_AND_FLAG_HIDDEN;
}
else {
normal_float_to_short_v3(&nor[f * 4], bm_face_no_get(mr, efa));
/* Select / Active Flag. */
nor[f * 4 + 3] = (BM_elem_flag_test(efa, BM_ELEM_SELECT) ?
((efa == mr->efa_act) ? NOR_AND_FLAG_ACTIVE : NOR_AND_FLAG_SELECT) :
NOR_AND_FLAG_DEFAULT);
}
}
}
}
constexpr MeshExtract create_extractor_fdots_nor_hq()
{
MeshExtract extractor = {nullptr};
extractor.init = extract_fdots_nor_hq_init;
extractor.finish = extract_fdots_nor_hq_finish;
extractor.data_type = MR_DATA_LOOP_NOR;
extractor.data_size = 0;
extractor.use_threading = false;
extractor.mesh_buffer_offset = offsetof(MeshBufferList, vbo.fdots_nor);
return extractor;
}
/** \} */
} // namespace blender::draw
const MeshExtract extract_fdots_nor = blender::draw::create_extractor_fdots_nor();
const MeshExtract extract_fdots_nor_hq = blender::draw::create_extractor_fdots_nor_hq();
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