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blender-archive/source/blender/draw/intern/draw_cache_impl_curve.c

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/*
* 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.
*
* The Original Code is Copyright (C) 2017 by Blender Foundation.
* All rights reserved.
*/
/** \file
* \ingroup draw
*
* \brief Curve API for render engines
*/
#include "MEM_guardedalloc.h"
#include "BLI_listbase.h"
#include "BLI_math_vector.h"
#include "BLI_utildefines.h"
#include "DNA_curve_types.h"
#include "BKE_curve.h"
#include "BKE_displist.h"
#include "BKE_font.h"
#include "GPU_batch.h"
#include "GPU_material.h"
#include "GPU_texture.h"
#include "UI_resources.h"
#include "DRW_render.h"
#include "draw_cache_inline.h"
#include "draw_cache_impl.h" /* own include */
#define SELECT 1
#define ACTIVE_NURB 1 << 2
#define BEZIER_HANDLE 1 << 3
#define EVEN_U_BIT 1 << 4 /* Alternate this bit for every U vert. */
#define COLOR_SHIFT 5
/* Used as values of `color_id` in `edit_curve_overlay_handle_geom.glsl` */
enum {
COLOR_NURB_ULINE_ID = TH_HANDLE_AUTOCLAMP - TH_HANDLE_FREE + 2,
TOT_HANDLE_COL,
};
/**
* TODO
* - Ensure `CurveCache`, `SEQUENCER_DAG_WORKAROUND`.
* - Check number of verts/edges to see if cache is valid.
* - Check if 'overlay.edges' can use single attribute per edge, not 2 (for selection drawing).
*/
static void curve_batch_cache_clear(Curve *cu);
/* ---------------------------------------------------------------------- */
/* Curve Interface, direct access to basic data. */
static void curve_render_overlay_verts_edges_len_get(ListBase *lb,
int *r_vert_len,
int *r_edge_len)
{
BLI_assert(r_vert_len || r_edge_len);
int vert_len = 0;
int edge_len = 0;
LISTBASE_FOREACH (Nurb *, nu, lb) {
if (nu->bezt) {
vert_len += nu->pntsu * 3;
/* 2x handles per point*/
edge_len += 2 * nu->pntsu;
}
else if (nu->bp) {
vert_len += nu->pntsu * nu->pntsv;
/* segments between points */
edge_len += (nu->pntsu - 1) * nu->pntsv;
edge_len += (nu->pntsv - 1) * nu->pntsu;
}
}
if (r_vert_len) {
*r_vert_len = vert_len;
}
if (r_edge_len) {
*r_edge_len = edge_len;
}
}
static void curve_render_wire_verts_edges_len_get(const CurveCache *ob_curve_cache,
int *r_curve_len,
int *r_vert_len,
int *r_edge_len)
{
BLI_assert(r_vert_len || r_edge_len);
int vert_len = 0;
int edge_len = 0;
int curve_len = 0;
LISTBASE_FOREACH (const BevList *, bl, &ob_curve_cache->bev) {
if (bl->nr > 0) {
const bool is_cyclic = bl->poly != -1;
edge_len += (is_cyclic) ? bl->nr : bl->nr - 1;
vert_len += bl->nr;
curve_len += 1;
}
}
LISTBASE_FOREACH (const DispList *, dl, &ob_curve_cache->disp) {
if (ELEM(dl->type, DL_SEGM, DL_POLY)) {
BLI_assert(dl->parts == 1);
const bool is_cyclic = dl->type == DL_POLY;
edge_len += (is_cyclic) ? dl->nr : dl->nr - 1;
vert_len += dl->nr;
curve_len += 1;
}
}
if (r_vert_len) {
*r_vert_len = vert_len;
}
if (r_edge_len) {
*r_edge_len = edge_len;
}
if (r_curve_len) {
*r_curve_len = curve_len;
}
}
static int curve_render_normal_len_get(const ListBase *lb, const CurveCache *ob_curve_cache)
{
int normal_len = 0;
const BevList *bl;
const Nurb *nu;
for (bl = ob_curve_cache->bev.first, nu = lb->first; nu && bl; bl = bl->next, nu = nu->next) {
int nr = bl->nr;
int skip = nu->resolu / 16;
#if 0
while (nr-- > 0) { /* accounts for empty bevel lists */
normal_len += 1;
nr -= skip;
}
#else
/* Same as loop above */
normal_len += (nr / (skip + 1)) + ((nr % (skip + 1)) != 0);
#endif
}
return normal_len;
}
/* ---------------------------------------------------------------------- */
/* Curve Interface, indirect, partially cached access to complex data. */
typedef struct CurveRenderData {
int types;
struct {
int vert_len;
int edge_len;
} overlay;
struct {
int curve_len;
int vert_len;
int edge_len;
} wire;
/* edit mode normal's */
struct {
/* 'edge_len == len * 2'
* 'vert_len == len * 3' */
int len;
} normal;
struct {
EditFont *edit_font;
} text;
/* borrow from 'Object' */
CurveCache *ob_curve_cache;
/* borrow from 'Curve' */
ListBase *nurbs;
/* edit, index in nurb list */
int actnu;
/* edit, index in active nurb (BPoint or BezTriple) */
int actvert;
} CurveRenderData;
enum {
/* Wire center-line */
CU_DATATYPE_WIRE = 1 << 0,
/* Edit-mode verts and optionally handles */
CU_DATATYPE_OVERLAY = 1 << 1,
/* Edit-mode normals */
CU_DATATYPE_NORMAL = 1 << 2,
/* Geometry */
CU_DATATYPE_SURFACE = 1 << 3,
/* Text */
CU_DATATYPE_TEXT_SELECT = 1 << 4,
};
/*
* ob_curve_cache can be NULL, only needed for CU_DATATYPE_WIRE
*/
static CurveRenderData *curve_render_data_create(Curve *cu,
CurveCache *ob_curve_cache,
const int types)
{
CurveRenderData *rdata = MEM_callocN(sizeof(*rdata), __func__);
rdata->types = types;
ListBase *nurbs;
rdata->actnu = cu->actnu;
rdata->actvert = cu->actvert;
rdata->ob_curve_cache = ob_curve_cache;
if (types & CU_DATATYPE_WIRE) {
curve_render_wire_verts_edges_len_get(rdata->ob_curve_cache,
&rdata->wire.curve_len,
&rdata->wire.vert_len,
&rdata->wire.edge_len);
}
if (cu->editnurb) {
EditNurb *editnurb = cu->editnurb;
nurbs = &editnurb->nurbs;
if (types & CU_DATATYPE_OVERLAY) {
curve_render_overlay_verts_edges_len_get(
nurbs, &rdata->overlay.vert_len, &rdata->overlay.edge_len);
rdata->actnu = cu->actnu;
rdata->actvert = cu->actvert;
}
if (types & CU_DATATYPE_NORMAL) {
rdata->normal.len = curve_render_normal_len_get(nurbs, rdata->ob_curve_cache);
}
}
else {
nurbs = &cu->nurb;
}
rdata->nurbs = nurbs;
rdata->text.edit_font = cu->editfont;
return rdata;
}
static void curve_render_data_free(CurveRenderData *rdata)
{
#if 0
if (rdata->loose_verts) {
MEM_freeN(rdata->loose_verts);
}
#endif
MEM_freeN(rdata);
}
static int curve_render_data_overlay_verts_len_get(const CurveRenderData *rdata)
{
BLI_assert(rdata->types & CU_DATATYPE_OVERLAY);
return rdata->overlay.vert_len;
}
static int curve_render_data_overlay_edges_len_get(const CurveRenderData *rdata)
{
BLI_assert(rdata->types & CU_DATATYPE_OVERLAY);
return rdata->overlay.edge_len;
}
static int curve_render_data_wire_verts_len_get(const CurveRenderData *rdata)
{
BLI_assert(rdata->types & CU_DATATYPE_WIRE);
return rdata->wire.vert_len;
}
static int curve_render_data_wire_edges_len_get(const CurveRenderData *rdata)
{
BLI_assert(rdata->types & CU_DATATYPE_WIRE);
return rdata->wire.edge_len;
}
static int curve_render_data_wire_curve_len_get(const CurveRenderData *rdata)
{
BLI_assert(rdata->types & CU_DATATYPE_WIRE);
return rdata->wire.curve_len;
}
static int curve_render_data_normal_len_get(const CurveRenderData *rdata)
{
BLI_assert(rdata->types & CU_DATATYPE_NORMAL);
return rdata->normal.len;
}
static void curve_cd_calc_used_gpu_layers(int *cd_layers,
struct GPUMaterial **gpumat_array,
int gpumat_array_len)
{
for (int i = 0; i < gpumat_array_len; i++) {
struct GPUMaterial *gpumat = gpumat_array[i];
if (gpumat == NULL) {
continue;
}
ListBase gpu_attrs = GPU_material_attributes(gpumat);
LISTBASE_FOREACH (GPUMaterialAttribute *, gpu_attr, &gpu_attrs) {
const char *name = gpu_attr->name;
int type = gpu_attr->type;
/* Curves cannot have named layers.
* Note: We could relax this assumption later. */
if (name[0] != '\0') {
continue;
}
if (type == CD_AUTO_FROM_NAME) {
type = CD_MTFACE;
}
switch (type) {
case CD_MTFACE:
*cd_layers |= CD_MLOOPUV;
break;
case CD_TANGENT:
*cd_layers |= CD_TANGENT;
break;
case CD_MCOL:
/* Curve object don't have Color data. */
break;
case CD_ORCO:
*cd_layers |= CD_ORCO;
break;
}
}
}
}
/* ---------------------------------------------------------------------- */
/* Curve GPUBatch Cache */
typedef struct CurveBatchCache {
struct {
GPUVertBuf *pos_nor;
GPUVertBuf *edge_fac;
GPUVertBuf *curves_pos;
GPUVertBuf *loop_pos_nor;
GPUVertBuf *loop_uv;
GPUVertBuf *loop_tan;
} ordered;
struct {
/* Curve points. Aligned with ordered.pos_nor */
GPUVertBuf *curves_nor;
GPUVertBuf *curves_weight; /* TODO. */
/* Edit points (beztriples and bpoints) */
GPUVertBuf *pos;
GPUVertBuf *data;
} edit;
struct {
GPUIndexBuf *surfaces_tris;
GPUIndexBuf *surfaces_lines;
GPUIndexBuf *curves_lines;
GPUIndexBuf *edges_adj_lines;
/* Edit mode */
GPUIndexBuf *edit_verts;
GPUIndexBuf *edit_lines;
} ibo;
struct {
GPUBatch *surfaces;
GPUBatch *surfaces_edges;
GPUBatch *curves;
/* control handles and vertices */
GPUBatch *edit_edges;
GPUBatch *edit_verts;
GPUBatch *edit_normals;
GPUBatch *edge_detection;
} batch;
GPUIndexBuf **surf_per_mat_tris;
GPUBatch **surf_per_mat;
int mat_len;
int cd_used, cd_needed;
/* settings to determine if cache is invalid */
bool is_dirty;
bool is_editmode;
/* Valid only if edge_detection is up to date. */
bool is_manifold;
} CurveBatchCache;
/* GPUBatch cache management. */
static bool curve_batch_cache_valid(Curve *cu)
{
CurveBatchCache *cache = cu->batch_cache;
if (cache == NULL) {
return false;
}
if (cache->mat_len != DRW_curve_material_count_get(cu)) {
return false;
}
if (cache->is_dirty) {
return false;
}
if (cache->is_editmode != ((cu->editnurb != NULL) || (cu->editfont != NULL))) {
return false;
}
if (cache->is_editmode) {
if (cu->editfont) {
/* TODO */
}
}
return true;
}
static void curve_batch_cache_init(Curve *cu)
{
CurveBatchCache *cache = cu->batch_cache;
if (!cache) {
cache = cu->batch_cache = MEM_callocN(sizeof(*cache), __func__);
}
else {
memset(cache, 0, sizeof(*cache));
}
#if 0
ListBase *nurbs;
if (cu->editnurb) {
EditNurb *editnurb = cu->editnurb;
nurbs = &editnurb->nurbs;
}
else {
nurbs = &cu->nurb;
}
#endif
cache->cd_used = 0;
cache->mat_len = DRW_curve_material_count_get(cu);
cache->surf_per_mat_tris = MEM_callocN(sizeof(*cache->surf_per_mat_tris) * cache->mat_len,
__func__);
cache->surf_per_mat = MEM_callocN(sizeof(*cache->surf_per_mat) * cache->mat_len, __func__);
cache->is_editmode = (cu->editnurb != NULL) || (cu->editfont != NULL);
cache->is_dirty = false;
}
void DRW_curve_batch_cache_validate(Curve *cu)
{
if (!curve_batch_cache_valid(cu)) {
curve_batch_cache_clear(cu);
curve_batch_cache_init(cu);
}
}
static CurveBatchCache *curve_batch_cache_get(Curve *cu)
{
return cu->batch_cache;
}
void DRW_curve_batch_cache_dirty_tag(Curve *cu, int mode)
{
CurveBatchCache *cache = cu->batch_cache;
if (cache == NULL) {
return;
}
switch (mode) {
case BKE_CURVE_BATCH_DIRTY_ALL:
cache->is_dirty = true;
break;
case BKE_CURVE_BATCH_DIRTY_SELECT:
GPU_VERTBUF_DISCARD_SAFE(cache->edit.data);
GPU_BATCH_DISCARD_SAFE(cache->batch.edit_edges);
GPU_BATCH_DISCARD_SAFE(cache->batch.edit_verts);
break;
default:
BLI_assert(0);
}
}
static void curve_batch_cache_clear(Curve *cu)
{
CurveBatchCache *cache = cu->batch_cache;
if (!cache) {
return;
}
for (int i = 0; i < sizeof(cache->ordered) / sizeof(void *); i++) {
GPUVertBuf **vbo = (GPUVertBuf **)&cache->ordered;
GPU_VERTBUF_DISCARD_SAFE(vbo[i]);
}
for (int i = 0; i < sizeof(cache->edit) / sizeof(void *); i++) {
GPUVertBuf **vbo = (GPUVertBuf **)&cache->edit;
GPU_VERTBUF_DISCARD_SAFE(vbo[i]);
}
for (int i = 0; i < sizeof(cache->ibo) / sizeof(void *); i++) {
GPUIndexBuf **ibo = (GPUIndexBuf **)&cache->ibo;
GPU_INDEXBUF_DISCARD_SAFE(ibo[i]);
}
for (int i = 0; i < sizeof(cache->batch) / sizeof(void *); i++) {
GPUBatch **batch = (GPUBatch **)&cache->batch;
GPU_BATCH_DISCARD_SAFE(batch[i]);
}
for (int i = 0; i < cache->mat_len; i++) {
GPU_INDEXBUF_DISCARD_SAFE(cache->surf_per_mat_tris[i]);
GPU_BATCH_DISCARD_SAFE(cache->surf_per_mat[i]);
}
MEM_SAFE_FREE(cache->surf_per_mat_tris);
MEM_SAFE_FREE(cache->surf_per_mat);
cache->mat_len = 0;
cache->cd_used = 0;
}
void DRW_curve_batch_cache_free(Curve *cu)
{
curve_batch_cache_clear(cu);
MEM_SAFE_FREE(cu->batch_cache);
}
/* -------------------------------------------------------------------- */
/** \name Private Curve Cache API
* \{ */
/* GPUBatch cache usage. */
static void curve_create_curves_pos(CurveRenderData *rdata, GPUVertBuf *vbo_curves_pos)
{
BLI_assert(rdata->ob_curve_cache != NULL);
static GPUVertFormat format = {0};
static struct {
uint pos;
} attr_id;
if (format.attr_len == 0) {
attr_id.pos = GPU_vertformat_attr_add(&format, "pos", GPU_COMP_F32, 3, GPU_FETCH_FLOAT);
}
const int vert_len = curve_render_data_wire_verts_len_get(rdata);
GPU_vertbuf_init_with_format(vbo_curves_pos, &format);
GPU_vertbuf_data_alloc(vbo_curves_pos, vert_len);
int v_idx = 0;
LISTBASE_FOREACH (const BevList *, bl, &rdata->ob_curve_cache->bev) {
if (bl->nr <= 0) {
continue;
}
const int i_end = v_idx + bl->nr;
for (const BevPoint *bevp = bl->bevpoints; v_idx < i_end; v_idx++, bevp++) {
GPU_vertbuf_attr_set(vbo_curves_pos, attr_id.pos, v_idx, bevp->vec);
}
}
LISTBASE_FOREACH (const DispList *, dl, &rdata->ob_curve_cache->disp) {
if (ELEM(dl->type, DL_SEGM, DL_POLY)) {
for (int i = 0; i < dl->nr; v_idx++, i++) {
GPU_vertbuf_attr_set(vbo_curves_pos, attr_id.pos, v_idx, &((float(*)[3])dl->verts)[i]);
}
}
}
BLI_assert(v_idx == vert_len);
}
static void curve_create_curves_lines(CurveRenderData *rdata, GPUIndexBuf *ibo_curve_lines)
{
BLI_assert(rdata->ob_curve_cache != NULL);
const int vert_len = curve_render_data_wire_verts_len_get(rdata);
const int edge_len = curve_render_data_wire_edges_len_get(rdata);
const int curve_len = curve_render_data_wire_curve_len_get(rdata);
/* Count the last vertex or each strip and the primitive restart. */
const int index_len = edge_len + curve_len * 2;
GPUIndexBufBuilder elb;
GPU_indexbuf_init_ex(&elb, GPU_PRIM_LINE_STRIP, index_len, vert_len);
int v_idx = 0;
LISTBASE_FOREACH (const BevList *, bl, &rdata->ob_curve_cache->bev) {
if (bl->nr <= 0) {
continue;
}
const bool is_cyclic = bl->poly != -1;
if (is_cyclic) {
GPU_indexbuf_add_generic_vert(&elb, v_idx + (bl->nr - 1));
}
for (int i = 0; i < bl->nr; i++) {
GPU_indexbuf_add_generic_vert(&elb, v_idx + i);
}
GPU_indexbuf_add_primitive_restart(&elb);
v_idx += bl->nr;
}
LISTBASE_FOREACH (const DispList *, dl, &rdata->ob_curve_cache->disp) {
if (ELEM(dl->type, DL_SEGM, DL_POLY)) {
const bool is_cyclic = dl->type == DL_POLY;
if (is_cyclic) {
GPU_indexbuf_add_generic_vert(&elb, v_idx + (dl->nr - 1));
}
for (int i = 0; i < dl->nr; i++) {
GPU_indexbuf_add_generic_vert(&elb, v_idx + i);
}
GPU_indexbuf_add_primitive_restart(&elb);
v_idx += dl->nr;
}
}
GPU_indexbuf_build_in_place(&elb, ibo_curve_lines);
}
static void curve_create_edit_curves_nor(CurveRenderData *rdata, GPUVertBuf *vbo_curves_nor)
{
static GPUVertFormat format = {0};
static struct {
uint pos, nor, tan, rad;
} attr_id;
if (format.attr_len == 0) {
/* initialize vertex formats */
attr_id.pos = GPU_vertformat_attr_add(&format, "pos", GPU_COMP_F32, 3, GPU_FETCH_FLOAT);
attr_id.rad = GPU_vertformat_attr_add(&format, "rad", GPU_COMP_F32, 1, GPU_FETCH_FLOAT);
attr_id.nor = GPU_vertformat_attr_add(
&format, "nor", GPU_COMP_I10, 3, GPU_FETCH_INT_TO_FLOAT_UNIT);
attr_id.tan = GPU_vertformat_attr_add(
&format, "tan", GPU_COMP_I10, 3, GPU_FETCH_INT_TO_FLOAT_UNIT);
}
int verts_len_capacity = curve_render_data_normal_len_get(rdata) * 2;
int vbo_len_used = 0;
GPU_vertbuf_init_with_format(vbo_curves_nor, &format);
GPU_vertbuf_data_alloc(vbo_curves_nor, verts_len_capacity);
const BevList *bl;
const Nurb *nu;
for (bl = rdata->ob_curve_cache->bev.first, nu = rdata->nurbs->first; nu && bl;
bl = bl->next, nu = nu->next) {
const BevPoint *bevp = bl->bevpoints;
int nr = bl->nr;
int skip = nu->resolu / 16;
while (nr-- > 0) { /* accounts for empty bevel lists */
float nor[3] = {1.0f, 0.0f, 0.0f};
mul_qt_v3(bevp->quat, nor);
GPUPackedNormal pnor = GPU_normal_convert_i10_v3(nor);
GPUPackedNormal ptan = GPU_normal_convert_i10_v3(bevp->dir);
/* Only set attributes for one vertex. */
GPU_vertbuf_attr_set(vbo_curves_nor, attr_id.pos, vbo_len_used, bevp->vec);
GPU_vertbuf_attr_set(vbo_curves_nor, attr_id.rad, vbo_len_used, &bevp->radius);
GPU_vertbuf_attr_set(vbo_curves_nor, attr_id.nor, vbo_len_used, &pnor);
GPU_vertbuf_attr_set(vbo_curves_nor, attr_id.tan, vbo_len_used, &ptan);
vbo_len_used++;
/* Skip the other vertex (it does not need to be offsetted). */
GPU_vertbuf_attr_set(vbo_curves_nor, attr_id.pos, vbo_len_used, bevp->vec);
vbo_len_used++;
bevp += skip + 1;
nr -= skip;
}
}
BLI_assert(vbo_len_used == verts_len_capacity);
}
static char beztriple_vflag_get(
CurveRenderData *rdata, char flag, char col_id, int v_idx, int nu_id, bool handle_point)
{
char vflag = 0;
SET_FLAG_FROM_TEST(vflag, (flag & SELECT), VFLAG_VERT_SELECTED);
SET_FLAG_FROM_TEST(vflag, (v_idx == rdata->actvert && nu_id == rdata->actnu), VFLAG_VERT_ACTIVE);
SET_FLAG_FROM_TEST(vflag, (nu_id == rdata->actnu), ACTIVE_NURB);
SET_FLAG_FROM_TEST(vflag, handle_point, BEZIER_HANDLE);
/* handle color id */
vflag |= col_id << COLOR_SHIFT;
return vflag;
}
static char bpoint_vflag_get(CurveRenderData *rdata, char flag, int v_idx, int nu_id, int u)
{
char vflag = 0;
SET_FLAG_FROM_TEST(vflag, (flag & SELECT), VFLAG_VERT_SELECTED);
SET_FLAG_FROM_TEST(vflag, (v_idx == rdata->actvert && nu_id == rdata->actnu), VFLAG_VERT_ACTIVE);
SET_FLAG_FROM_TEST(vflag, (nu_id == rdata->actnu), ACTIVE_NURB);
SET_FLAG_FROM_TEST(vflag, ((u % 2) == 0), EVEN_U_BIT);
vflag |= COLOR_NURB_ULINE_ID << COLOR_SHIFT;
return vflag;
}
static void curve_create_edit_data_and_handles(CurveRenderData *rdata,
GPUVertBuf *vbo_pos,
GPUVertBuf *vbo_data,
GPUIndexBuf *ibo_edit_verts_points,
GPUIndexBuf *ibo_edit_lines)
{
static GPUVertFormat format_pos = {0};
static GPUVertFormat format_data = {0};
static struct {
uint pos, data;
} attr_id;
if (format_pos.attr_len == 0) {
/* initialize vertex formats */
attr_id.pos = GPU_vertformat_attr_add(&format_pos, "pos", GPU_COMP_F32, 3, GPU_FETCH_FLOAT);
attr_id.data = GPU_vertformat_attr_add(&format_data, "data", GPU_COMP_U8, 1, GPU_FETCH_INT);
}
int verts_len_capacity = curve_render_data_overlay_verts_len_get(rdata);
int edges_len_capacity = curve_render_data_overlay_edges_len_get(rdata) * 2;
int vbo_len_used = 0;
if (DRW_TEST_ASSIGN_VBO(vbo_pos)) {
GPU_vertbuf_init_with_format(vbo_pos, &format_pos);
GPU_vertbuf_data_alloc(vbo_pos, verts_len_capacity);
}
if (DRW_TEST_ASSIGN_VBO(vbo_data)) {
GPU_vertbuf_init_with_format(vbo_data, &format_data);
GPU_vertbuf_data_alloc(vbo_data, verts_len_capacity);
}
GPUIndexBufBuilder elb_verts, *elbp_verts = NULL;
GPUIndexBufBuilder elb_lines, *elbp_lines = NULL;
if (DRW_TEST_ASSIGN_IBO(ibo_edit_verts_points)) {
elbp_verts = &elb_verts;
GPU_indexbuf_init(elbp_verts, GPU_PRIM_POINTS, verts_len_capacity, verts_len_capacity);
}
if (DRW_TEST_ASSIGN_IBO(ibo_edit_lines)) {
elbp_lines = &elb_lines;
GPU_indexbuf_init(elbp_lines, GPU_PRIM_LINES, edges_len_capacity, verts_len_capacity);
}
int nu_id = 0;
for (Nurb *nu = rdata->nurbs->first; nu; nu = nu->next, nu_id++) {
const BezTriple *bezt = nu->bezt;
const BPoint *bp = nu->bp;
if (bezt) {
for (int a = 0; a < nu->pntsu; a++, bezt++) {
if (bezt->hide == true) {
continue;
}
if (elbp_verts) {
GPU_indexbuf_add_point_vert(elbp_verts, vbo_len_used + 0);
GPU_indexbuf_add_point_vert(elbp_verts, vbo_len_used + 1);
GPU_indexbuf_add_point_vert(elbp_verts, vbo_len_used + 2);
}
if (elbp_lines) {
GPU_indexbuf_add_line_verts(elbp_lines, vbo_len_used + 1, vbo_len_used + 0);
GPU_indexbuf_add_line_verts(elbp_lines, vbo_len_used + 1, vbo_len_used + 2);
}
if (vbo_data) {
const char vflag[3] = {
beztriple_vflag_get(rdata, bezt->f1, bezt->h1, a, nu_id, true),
beztriple_vflag_get(rdata, bezt->f2, bezt->h1, a, nu_id, false),
beztriple_vflag_get(rdata, bezt->f3, bezt->h2, a, nu_id, true),
};
for (int j = 0; j < 3; j++) {
GPU_vertbuf_attr_set(vbo_data, attr_id.data, vbo_len_used + j, &vflag[j]);
}
}
if (vbo_pos) {
for (int j = 0; j < 3; j++) {
GPU_vertbuf_attr_set(vbo_pos, attr_id.pos, vbo_len_used + j, bezt->vec[j]);
}
}
vbo_len_used += 3;
}
}
else if (bp) {
int pt_len = nu->pntsu * nu->pntsv;
for (int a = 0; a < pt_len; a++, bp++, vbo_len_used += 1) {
if (bp->hide == true) {
continue;
}
int u = (a % nu->pntsu);
int v = (a / nu->pntsu);
/* Use indexed rendering for bezier.
* Specify all points and use indices to hide/show. */
if (elbp_verts) {
GPU_indexbuf_add_point_vert(elbp_verts, vbo_len_used);
}
if (elbp_lines) {
const BPoint *bp_next_u = (u < (nu->pntsu - 1)) ? &nu->bp[a + 1] : NULL;
const BPoint *bp_next_v = (v < (nu->pntsv - 1)) ? &nu->bp[a + nu->pntsu] : NULL;
if (bp_next_u && (bp_next_u->hide == false)) {
GPU_indexbuf_add_line_verts(elbp_lines, vbo_len_used, vbo_len_used + 1);
}
if (bp_next_v && (bp_next_v->hide == false)) {
GPU_indexbuf_add_line_verts(elbp_lines, vbo_len_used, vbo_len_used + nu->pntsu);
}
}
if (vbo_data) {
char vflag = bpoint_vflag_get(rdata, bp->f1, a, nu_id, u);
GPU_vertbuf_attr_set(vbo_data, attr_id.data, vbo_len_used, &vflag);
}
if (vbo_pos) {
GPU_vertbuf_attr_set(vbo_pos, attr_id.pos, vbo_len_used, bp->vec);
}
}
}
}
/* Resize & Finish */
if (elbp_verts != NULL) {
GPU_indexbuf_build_in_place(elbp_verts, ibo_edit_verts_points);
}
if (elbp_lines != NULL) {
GPU_indexbuf_build_in_place(elbp_lines, ibo_edit_lines);
}
if (vbo_len_used != verts_len_capacity) {
if (vbo_pos != NULL) {
GPU_vertbuf_data_resize(vbo_pos, vbo_len_used);
}
if (vbo_data != NULL) {
GPU_vertbuf_data_resize(vbo_data, vbo_len_used);
}
}
}
/** \} */
/* -------------------------------------------------------------------- */
/** \name Public Object/Curve API
* \{ */
GPUBatch *DRW_curve_batch_cache_get_wire_edge(Curve *cu)
{
CurveBatchCache *cache = curve_batch_cache_get(cu);
return DRW_batch_request(&cache->batch.curves);
}
GPUBatch *DRW_curve_batch_cache_get_normal_edge(Curve *cu)
{
CurveBatchCache *cache = curve_batch_cache_get(cu);
return DRW_batch_request(&cache->batch.edit_normals);
}
GPUBatch *DRW_curve_batch_cache_get_edit_edges(Curve *cu)
{
CurveBatchCache *cache = curve_batch_cache_get(cu);
return DRW_batch_request(&cache->batch.edit_edges);
}
GPUBatch *DRW_curve_batch_cache_get_edit_verts(Curve *cu)
{
CurveBatchCache *cache = curve_batch_cache_get(cu);
return DRW_batch_request(&cache->batch.edit_verts);
}
GPUBatch *DRW_curve_batch_cache_get_triangles_with_normals(struct Curve *cu)
{
CurveBatchCache *cache = curve_batch_cache_get(cu);
return DRW_batch_request(&cache->batch.surfaces);
}
GPUBatch **DRW_curve_batch_cache_get_surface_shaded(struct Curve *cu,
struct GPUMaterial **gpumat_array,
uint gpumat_array_len)
{
CurveBatchCache *cache = curve_batch_cache_get(cu);
BLI_assert(gpumat_array_len == cache->mat_len);
curve_cd_calc_used_gpu_layers(&cache->cd_needed, gpumat_array, gpumat_array_len);
for (int i = 0; i < cache->mat_len; i++) {
DRW_batch_request(&cache->surf_per_mat[i]);
}
return cache->surf_per_mat;
}
GPUBatch *DRW_curve_batch_cache_get_wireframes_face(Curve *cu)
{
CurveBatchCache *cache = curve_batch_cache_get(cu);
return DRW_batch_request(&cache->batch.surfaces_edges);
}
GPUBatch *DRW_curve_batch_cache_get_edge_detection(Curve *cu, bool *r_is_manifold)
{
CurveBatchCache *cache = curve_batch_cache_get(cu);
/* Even if is_manifold is not correct (not updated),
* the default (not manifold) is just the worst case. */
if (r_is_manifold) {
*r_is_manifold = cache->is_manifold;
}
return DRW_batch_request(&cache->batch.edge_detection);
}
int DRW_curve_material_count_get(Curve *cu)
{
return max_ii(1, cu->totcol);
}
/** \} */
/* -------------------------------------------------------------------- */
/** \name Grouped batch generation
* \{ */
void DRW_curve_batch_cache_create_requested(Object *ob)
{
BLI_assert(ELEM(ob->type, OB_CURVE, OB_SURF, OB_FONT));
Curve *cu = ob->data;
CurveBatchCache *cache = curve_batch_cache_get(cu);
/* Verify that all surface batches have needed attribute layers. */
/* TODO(fclem): We could be a bit smarter here and only do it per material. */
if ((cache->cd_used & cache->cd_needed) != cache->cd_needed) {
for (int i = 0; i < cache->mat_len; i++) {
/* We can't discard batches at this point as they have been
* referenced for drawing. Just clear them in place. */
GPU_BATCH_CLEAR_SAFE(cache->surf_per_mat[i]);
}
cache->cd_used |= cache->cd_needed;
cache->cd_needed = 0;
}
/* Init batches and request VBOs & IBOs */
if (DRW_batch_requested(cache->batch.surfaces, GPU_PRIM_TRIS)) {
DRW_vbo_request(cache->batch.surfaces, &cache->ordered.loop_pos_nor);
}
if (DRW_batch_requested(cache->batch.surfaces_edges, GPU_PRIM_LINES)) {
DRW_ibo_request(cache->batch.surfaces_edges, &cache->ibo.surfaces_lines);
DRW_vbo_request(cache->batch.surfaces_edges, &cache->ordered.pos_nor);
DRW_vbo_request(cache->batch.surfaces_edges, &cache->ordered.edge_fac);
}
if (DRW_batch_requested(cache->batch.curves, GPU_PRIM_LINE_STRIP)) {
DRW_ibo_request(cache->batch.curves, &cache->ibo.curves_lines);
DRW_vbo_request(cache->batch.curves, &cache->ordered.curves_pos);
}
if (DRW_batch_requested(cache->batch.edge_detection, GPU_PRIM_LINES_ADJ)) {
DRW_ibo_request(cache->batch.edge_detection, &cache->ibo.edges_adj_lines);
DRW_vbo_request(cache->batch.edge_detection, &cache->ordered.pos_nor);
}
/* Edit mode */
if (DRW_batch_requested(cache->batch.edit_edges, GPU_PRIM_LINES)) {
DRW_ibo_request(cache->batch.edit_edges, &cache->ibo.edit_lines);
DRW_vbo_request(cache->batch.edit_edges, &cache->edit.pos);
DRW_vbo_request(cache->batch.edit_edges, &cache->edit.data);
}
if (DRW_batch_requested(cache->batch.edit_verts, GPU_PRIM_POINTS)) {
DRW_ibo_request(cache->batch.edit_verts, &cache->ibo.edit_verts);
DRW_vbo_request(cache->batch.edit_verts, &cache->edit.pos);
DRW_vbo_request(cache->batch.edit_verts, &cache->edit.data);
}
if (DRW_batch_requested(cache->batch.edit_normals, GPU_PRIM_LINES)) {
DRW_vbo_request(cache->batch.edit_normals, &cache->edit.curves_nor);
}
for (int i = 0; i < cache->mat_len; i++) {
if (DRW_batch_requested(cache->surf_per_mat[i], GPU_PRIM_TRIS)) {
if (cache->mat_len > 1) {
DRW_ibo_request(cache->surf_per_mat[i], &cache->surf_per_mat_tris[i]);
}
if (cache->cd_used & CD_MLOOPUV) {
DRW_vbo_request(cache->surf_per_mat[i], &cache->ordered.loop_uv);
}
if (cache->cd_used & CD_TANGENT) {
DRW_vbo_request(cache->surf_per_mat[i], &cache->ordered.loop_tan);
}
DRW_vbo_request(cache->surf_per_mat[i], &cache->ordered.loop_pos_nor);
}
}
#ifdef DRW_DEBUG_MESH_CACHE_REQUEST
printf("-- %s %s --\n", __func__, ob->id.name + 2);
#endif
/* Generate MeshRenderData flags */
int mr_flag = 0;
DRW_ADD_FLAG_FROM_VBO_REQUEST(mr_flag, cache->ordered.pos_nor, CU_DATATYPE_SURFACE);
DRW_ADD_FLAG_FROM_VBO_REQUEST(mr_flag, cache->ordered.edge_fac, CU_DATATYPE_SURFACE);
DRW_ADD_FLAG_FROM_VBO_REQUEST(mr_flag, cache->ordered.curves_pos, CU_DATATYPE_WIRE);
DRW_ADD_FLAG_FROM_VBO_REQUEST(mr_flag, cache->ordered.loop_pos_nor, CU_DATATYPE_SURFACE);
DRW_ADD_FLAG_FROM_VBO_REQUEST(mr_flag, cache->ordered.loop_uv, CU_DATATYPE_SURFACE);
DRW_ADD_FLAG_FROM_VBO_REQUEST(mr_flag, cache->ordered.loop_tan, CU_DATATYPE_SURFACE);
DRW_ADD_FLAG_FROM_IBO_REQUEST(mr_flag, cache->ibo.surfaces_tris, CU_DATATYPE_SURFACE);
DRW_ADD_FLAG_FROM_IBO_REQUEST(mr_flag, cache->ibo.surfaces_lines, CU_DATATYPE_SURFACE);
DRW_ADD_FLAG_FROM_IBO_REQUEST(mr_flag, cache->ibo.curves_lines, CU_DATATYPE_WIRE);
DRW_ADD_FLAG_FROM_IBO_REQUEST(mr_flag, cache->ibo.edges_adj_lines, CU_DATATYPE_SURFACE);
DRW_ADD_FLAG_FROM_VBO_REQUEST(mr_flag, cache->edit.pos, CU_DATATYPE_OVERLAY);
DRW_ADD_FLAG_FROM_VBO_REQUEST(mr_flag, cache->edit.data, CU_DATATYPE_OVERLAY);
DRW_ADD_FLAG_FROM_VBO_REQUEST(mr_flag, cache->edit.curves_nor, CU_DATATYPE_NORMAL);
DRW_ADD_FLAG_FROM_VBO_REQUEST(mr_flag, cache->edit.curves_weight, CU_DATATYPE_OVERLAY);
DRW_ADD_FLAG_FROM_IBO_REQUEST(mr_flag, cache->ibo.edit_verts, CU_DATATYPE_OVERLAY);
DRW_ADD_FLAG_FROM_IBO_REQUEST(mr_flag, cache->ibo.edit_lines, CU_DATATYPE_OVERLAY);
for (int i = 0; i < cache->mat_len; i++) {
DRW_ADD_FLAG_FROM_IBO_REQUEST(mr_flag, cache->surf_per_mat_tris[i], CU_DATATYPE_SURFACE);
}
#ifdef DRW_DEBUG_MESH_CACHE_REQUEST
printf(" mr_flag %d\n\n", mr_flag);
#endif
CurveRenderData *rdata = curve_render_data_create(cu, ob->runtime.curve_cache, mr_flag);
/* DispLists */
ListBase *lb = &rdata->ob_curve_cache->disp;
/* Generate VBOs */
if (DRW_vbo_requested(cache->ordered.pos_nor)) {
DRW_displist_vertbuf_create_pos_and_nor(lb, cache->ordered.pos_nor);
}
if (DRW_vbo_requested(cache->ordered.edge_fac)) {
DRW_displist_vertbuf_create_wiredata(lb, cache->ordered.edge_fac);
}
if (DRW_vbo_requested(cache->ordered.curves_pos)) {
curve_create_curves_pos(rdata, cache->ordered.curves_pos);
}
if (DRW_vbo_requested(cache->ordered.loop_pos_nor) ||
DRW_vbo_requested(cache->ordered.loop_uv)) {
DRW_displist_vertbuf_create_loop_pos_and_nor_and_uv_and_tan(
lb, cache->ordered.loop_pos_nor, cache->ordered.loop_uv, cache->ordered.loop_tan);
}
if (DRW_ibo_requested(cache->surf_per_mat_tris[0])) {
DRW_displist_indexbuf_create_triangles_loop_split_by_material(
lb, cache->surf_per_mat_tris, cache->mat_len);
}
if (DRW_ibo_requested(cache->ibo.curves_lines)) {
curve_create_curves_lines(rdata, cache->ibo.curves_lines);
}
if (DRW_ibo_requested(cache->ibo.surfaces_tris)) {
DRW_displist_indexbuf_create_triangles_in_order(lb, cache->ibo.surfaces_tris);
}
if (DRW_ibo_requested(cache->ibo.surfaces_lines)) {
DRW_displist_indexbuf_create_lines_in_order(lb, cache->ibo.surfaces_lines);
}
if (DRW_ibo_requested(cache->ibo.edges_adj_lines)) {
DRW_displist_indexbuf_create_edges_adjacency_lines(
lb, cache->ibo.edges_adj_lines, &cache->is_manifold);
}
if (DRW_vbo_requested(cache->edit.pos) || DRW_vbo_requested(cache->edit.data) ||
DRW_ibo_requested(cache->ibo.edit_verts) || DRW_ibo_requested(cache->ibo.edit_lines)) {
curve_create_edit_data_and_handles(
rdata, cache->edit.pos, cache->edit.data, cache->ibo.edit_verts, cache->ibo.edit_lines);
}
if (DRW_vbo_requested(cache->edit.curves_nor)) {
curve_create_edit_curves_nor(rdata, cache->edit.curves_nor);
}
curve_render_data_free(rdata);
#ifdef DEBUG
/* Make sure all requested batches have been setup. */
for (int i = 0; i < sizeof(cache->batch) / sizeof(void *); i++) {
BLI_assert(!DRW_batch_requested(((GPUBatch **)&cache->batch)[i], 0));
}
#endif
}
/** \} */
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