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/* SPDX-License-Identifier: GPL-2.0-or-later
* Copyright 2020 Blender Foundation. */
/** \file
* \ingroup draw_engine
*/
#include "DRW_render.h"
#include "BKE_gpencil.h"
#include "UI_resources.h"
#include "DNA_gpencil_types.h"
#include "DEG_depsgraph_query.h"
#include "ED_view3d.h"
#include "overlay_private.hh"
#include "draw_common.h"
#include "draw_manager_text.h"
void OVERLAY_edit_gpencil_cache_init(OVERLAY_Data *vedata)
{
OVERLAY_PassList *psl = vedata->psl;
OVERLAY_PrivateData *pd = vedata->stl->pd;
struct GPUShader *sh;
DRWShadingGroup *grp;
/* Default: Display nothing. */
pd->edit_gpencil_points_grp = nullptr;
pd->edit_gpencil_wires_grp = nullptr;
psl->edit_gpencil_ps = nullptr;
pd->edit_gpencil_curve_handle_grp = nullptr;
pd->edit_gpencil_curve_points_grp = nullptr;
psl->edit_gpencil_curve_ps = nullptr;
const DRWContextState *draw_ctx = DRW_context_state_get();
View3D *v3d = draw_ctx->v3d;
Object *ob = draw_ctx->obact;
bGPdata *gpd = ob ? (bGPdata *)ob->data : nullptr;
Scene *scene = draw_ctx->scene;
ToolSettings *ts = scene->toolsettings;
if (gpd == nullptr || ob->type != OB_GPENCIL) {
return;
}
/* For sculpt show only if mask mode, and only points if not stroke mode. */
const bool use_sculpt_mask = (GPENCIL_SCULPT_MODE(gpd) &&
GPENCIL_ANY_SCULPT_MASK(ts->gpencil_selectmode_sculpt));
const bool show_sculpt_points = (GPENCIL_SCULPT_MODE(gpd) &&
(ts->gpencil_selectmode_sculpt &
(GP_SCULPT_MASK_SELECTMODE_POINT |
GP_SCULPT_MASK_SELECTMODE_SEGMENT)));
/* For vertex paint show only if mask mode, and only points if not stroke mode. */
bool use_vertex_mask = (GPENCIL_VERTEX_MODE(gpd) &&
GPENCIL_ANY_VERTEX_MASK(ts->gpencil_selectmode_vertex));
const bool show_vertex_points = (GPENCIL_VERTEX_MODE(gpd) &&
(ts->gpencil_selectmode_vertex &
(GP_VERTEX_MASK_SELECTMODE_POINT |
GP_VERTEX_MASK_SELECTMODE_SEGMENT)));
/* If Sculpt or Vertex mode and the mask is disabled, the select must be hidden. */
const bool hide_select = ((GPENCIL_SCULPT_MODE(gpd) && !use_sculpt_mask) ||
(GPENCIL_VERTEX_MODE(gpd) && !use_vertex_mask));
const bool do_multiedit = GPENCIL_MULTIEDIT_SESSIONS_ON(gpd);
const bool show_multi_edit_lines = (do_multiedit) &&
((v3d->gp_flag & (V3D_GP_SHOW_MULTIEDIT_LINES |
V3D_GP_SHOW_EDIT_LINES)) != 0);
const bool show_lines = (v3d->gp_flag & V3D_GP_SHOW_EDIT_LINES) || show_multi_edit_lines;
const bool hide_lines = !GPENCIL_EDIT_MODE(gpd) && !GPENCIL_WEIGHT_MODE(gpd) &&
!use_sculpt_mask && !use_vertex_mask && !show_lines;
/* Special case when vertex paint and multiedit lines. */
if (do_multiedit && show_multi_edit_lines && GPENCIL_VERTEX_MODE(gpd)) {
use_vertex_mask = true;
}
const bool is_weight_paint = (gpd) && (gpd->flag & GP_DATA_STROKE_WEIGHTMODE);
/* Show Edit points if:
* Edit mode: Not in Stroke selection mode
* Sculpt mode: If use Mask and not Stroke mode
* Weight mode: Always
* Vertex mode: If use Mask and not Stroke mode
*/
const bool show_points = show_sculpt_points || is_weight_paint || show_vertex_points ||
(GPENCIL_EDIT_MODE(gpd) &&
(ts->gpencil_selectmode_edit != GP_SELECTMODE_STROKE));
if (!GPENCIL_CURVE_EDIT_SESSIONS_ON(gpd) &&
((!GPENCIL_VERTEX_MODE(gpd) && !GPENCIL_PAINT_MODE(gpd)) || use_vertex_mask)) {
DRWState state = DRW_STATE_WRITE_COLOR | DRW_STATE_WRITE_DEPTH | DRW_STATE_DEPTH_LESS_EQUAL |
DRW_STATE_BLEND_ALPHA;
DRW_PASS_CREATE(psl->edit_gpencil_ps, state | pd->clipping_state);
if (show_lines && !hide_lines) {
sh = OVERLAY_shader_edit_gpencil_wire();
pd->edit_gpencil_wires_grp = grp = DRW_shgroup_create(sh, psl->edit_gpencil_ps);
DRW_shgroup_uniform_block(grp, "globalsBlock", G_draw.block_ubo);
DRW_shgroup_uniform_bool_copy(grp, "doMultiframe", show_multi_edit_lines);
DRW_shgroup_uniform_bool_copy(grp, "doWeightColor", is_weight_paint);
DRW_shgroup_uniform_bool_copy(grp, "hideSelect", hide_select);
DRW_shgroup_uniform_float_copy(grp, "gpEditOpacity", v3d->vertex_opacity);
DRW_shgroup_uniform_texture(grp, "weightTex", G_draw.weight_ramp);
}
if (show_points && !hide_select) {
sh = OVERLAY_shader_edit_gpencil_point();
pd->edit_gpencil_points_grp = grp = DRW_shgroup_create(sh, psl->edit_gpencil_ps);
DRW_shgroup_uniform_block(grp, "globalsBlock", G_draw.block_ubo);
DRW_shgroup_uniform_bool_copy(grp, "doMultiframe", do_multiedit);
DRW_shgroup_uniform_bool_copy(grp, "doWeightColor", is_weight_paint);
DRW_shgroup_uniform_float_copy(grp, "gpEditOpacity", v3d->vertex_opacity);
DRW_shgroup_uniform_texture(grp, "weightTex", G_draw.weight_ramp);
}
}
/* Handles and curve point for Curve Edit sub-mode. */
if (GPENCIL_CURVE_EDIT_SESSIONS_ON(gpd)) {
DRWState state = DRW_STATE_WRITE_COLOR;
DRW_PASS_CREATE(psl->edit_gpencil_curve_ps, state | pd->clipping_state);
/* Edit lines. */
if (show_lines) {
sh = OVERLAY_shader_edit_gpencil_wire();
pd->edit_gpencil_wires_grp = grp = DRW_shgroup_create(sh, psl->edit_gpencil_curve_ps);
DRW_shgroup_uniform_block(grp, "globalsBlock", G_draw.block_ubo);
DRW_shgroup_uniform_bool_copy(grp, "doMultiframe", show_multi_edit_lines);
DRW_shgroup_uniform_bool_copy(grp, "doWeightColor", is_weight_paint);
DRW_shgroup_uniform_bool_copy(grp, "hideSelect", hide_select);
DRW_shgroup_uniform_float_copy(grp, "gpEditOpacity", v3d->vertex_opacity);
DRW_shgroup_uniform_texture(grp, "weightTex", G_draw.weight_ramp);
}
sh = OVERLAY_shader_edit_curve_handle();
pd->edit_gpencil_curve_handle_grp = grp = DRW_shgroup_create(sh, psl->edit_gpencil_curve_ps);
DRW_shgroup_uniform_block(grp, "globalsBlock", G_draw.block_ubo);
DRW_shgroup_uniform_bool_copy(grp, "showCurveHandles", pd->edit_curve.show_handles);
DRW_shgroup_uniform_int_copy(grp, "curveHandleDisplay", pd->edit_curve.handle_display);
DRW_shgroup_state_enable(grp, DRW_STATE_BLEND_ALPHA);
sh = OVERLAY_shader_edit_curve_point();
pd->edit_gpencil_curve_points_grp = grp = DRW_shgroup_create(sh, psl->edit_gpencil_curve_ps);
DRW_shgroup_uniform_block(grp, "globalsBlock", G_draw.block_ubo);
DRW_shgroup_uniform_bool_copy(grp, "showCurveHandles", pd->edit_curve.show_handles);
DRW_shgroup_uniform_int_copy(grp, "curveHandleDisplay", pd->edit_curve.handle_display);
}
/* control points for primitives and speed guide */
const bool is_cppoint = (gpd->runtime.tot_cp_points > 0);
const bool is_speed_guide = (ts->gp_sculpt.guide.use_guide &&
(draw_ctx->object_mode == OB_MODE_PAINT_GPENCIL));
const bool is_show_gizmo = (((v3d->gizmo_flag & V3D_GIZMO_HIDE) == 0) &&
((v3d->gizmo_flag & V3D_GIZMO_HIDE_TOOL) == 0));
if ((is_cppoint || is_speed_guide) && (is_show_gizmo)) {
DRWState state = DRW_STATE_WRITE_COLOR | DRW_STATE_BLEND_ALPHA;
DRW_PASS_CREATE(psl->edit_gpencil_gizmos_ps, state);
sh = OVERLAY_shader_edit_gpencil_guide_point();
grp = DRW_shgroup_create(sh, psl->edit_gpencil_gizmos_ps);
if (gpd->runtime.cp_points != nullptr) {
for (int i = 0; i < gpd->runtime.tot_cp_points; i++) {
bGPDcontrolpoint *cp = &gpd->runtime.cp_points[i];
grp = DRW_shgroup_create_sub(grp);
DRW_shgroup_uniform_vec3_copy(grp, "pPosition", &cp->x);
DRW_shgroup_uniform_float_copy(grp, "pSize", cp->size * 0.8f * G_draw.block.size_pixel);
DRW_shgroup_uniform_vec4_copy(grp, "pColor", cp->color);
DRW_shgroup_call_procedural_points(grp, nullptr, 1);
}
}
if (ts->gp_sculpt.guide.use_guide) {
float color[4];
if (ts->gp_sculpt.guide.reference_point == GP_GUIDE_REF_CUSTOM) {
UI_GetThemeColor4fv(TH_GIZMO_PRIMARY, color);
DRW_shgroup_uniform_vec3_copy(grp, "pPosition", ts->gp_sculpt.guide.location);
}
else if (ts->gp_sculpt.guide.reference_point == GP_GUIDE_REF_OBJECT &&
ts->gp_sculpt.guide.reference_object != nullptr) {
UI_GetThemeColor4fv(TH_GIZMO_SECONDARY, color);
DRW_shgroup_uniform_vec3_copy(grp, "pPosition", ts->gp_sculpt.guide.reference_object->loc);
}
else {
UI_GetThemeColor4fv(TH_REDALERT, color);
DRW_shgroup_uniform_vec3_copy(grp, "pPosition", scene->cursor.location);
}
DRW_shgroup_uniform_vec4_copy(grp, "pColor", color);
DRW_shgroup_uniform_float_copy(grp, "pSize", 8.0f * G_draw.block.size_pixel);
DRW_shgroup_call_procedural_points(grp, nullptr, 1);
}
}
}
void OVERLAY_gpencil_cache_init(OVERLAY_Data *vedata)
{
OVERLAY_PassList *psl = vedata->psl;
OVERLAY_PrivateData *pd = vedata->stl->pd;
struct GPUShader *sh;
DRWShadingGroup *grp;
/* Default: Display nothing. */
psl->gpencil_canvas_ps = nullptr;
const DRWContextState *draw_ctx = DRW_context_state_get();
View3D *v3d = draw_ctx->v3d;
Object *ob = draw_ctx->obact;
bGPdata *gpd = ob ? (bGPdata *)ob->data : nullptr;
Scene *scene = draw_ctx->scene;
ToolSettings *ts = scene->toolsettings;
const View3DCursor *cursor = &scene->cursor;
pd->edit_curve.show_handles = v3d->overlay.handle_display != CURVE_HANDLE_NONE;
pd->edit_curve.handle_display = v3d->overlay.handle_display;
if (gpd == nullptr || ob->type != OB_GPENCIL) {
return;
}
const bool show_overlays = (v3d->flag2 & V3D_HIDE_OVERLAYS) == 0;
const bool show_grid = (v3d->gp_flag & V3D_GP_SHOW_GRID) != 0 &&
((ts->gpencil_v3d_align &
(GP_PROJECT_DEPTH_VIEW | GP_PROJECT_DEPTH_STROKE)) == 0);
const bool grid_xray = (v3d->gp_flag & V3D_GP_SHOW_GRID_XRAY);
if (show_grid && show_overlays) {
const char *grid_unit = nullptr;
float mat[4][4];
float col_grid[4];
float size[2];
/* set color */
copy_v3_v3(col_grid, gpd->grid.color);
col_grid[3] = max_ff(v3d->overlay.gpencil_grid_opacity, 0.01f);
copy_m4_m4(mat, ob->obmat);
/* Rotate and scale except align to cursor. */
bGPDlayer *gpl = BKE_gpencil_layer_active_get(gpd);
if (gpl != nullptr) {
if (ts->gp_sculpt.lock_axis != GP_LOCKAXIS_CURSOR) {
float matrot[3][3];
copy_m3_m4(matrot, gpl->layer_mat);
mul_m4_m4m3(mat, mat, matrot);
}
}
float viewinv[4][4];
/* Set the grid in the selected axis */
switch (ts->gp_sculpt.lock_axis) {
case GP_LOCKAXIS_X:
swap_v4_v4(mat[0], mat[2]);
break;
case GP_LOCKAXIS_Y:
swap_v4_v4(mat[1], mat[2]);
break;
case GP_LOCKAXIS_Z:
/* Default. */
break;
case GP_LOCKAXIS_CURSOR: {
const float3 size_vec = {1.0f, 1.0f, 1.0f};
loc_eul_size_to_mat4(mat, cursor->location, cursor->rotation_euler, size_vec);
break;
}
case GP_LOCKAXIS_VIEW:
/* view aligned */
DRW_view_viewmat_get(nullptr, viewinv, true);
copy_v3_v3(mat[0], viewinv[0]);
copy_v3_v3(mat[1], viewinv[1]);
break;
}
/* Move the grid to the right location depending of the align type.
* This is required only for 3D Cursor or Origin. */
if (ts->gpencil_v3d_align & GP_PROJECT_CURSOR) {
copy_v3_v3(mat[3], cursor->location);
}
else if (ts->gpencil_v3d_align & GP_PROJECT_VIEWSPACE) {
copy_v3_v3(mat[3], ob->obmat[3]);
}
translate_m4(mat, gpd->grid.offset[0], gpd->grid.offset[1], 0.0f);
mul_v2_v2fl(size, gpd->grid.scale, 2.0f * ED_scene_grid_scale(scene, &grid_unit));
const float3 scale_vec = {size[0], size[1], 0.0f};
rescale_m4(mat, scale_vec);
/* Apply layer loc transform, except cursor mode. */
if ((gpl != nullptr) && (ts->gpencil_v3d_align & GP_PROJECT_CURSOR) == 0) {
add_v3_v3(mat[3], gpl->layer_mat[3]);
}
const int gridlines = (gpd->grid.lines <= 0) ? 1 : gpd->grid.lines;
const int line_count = gridlines * 4 + 2;
DRWState state = DRW_STATE_WRITE_COLOR | DRW_STATE_BLEND_ALPHA;
state |= (grid_xray) ? DRW_STATE_DEPTH_ALWAYS : DRW_STATE_DEPTH_LESS_EQUAL;
DRW_PASS_CREATE(psl->gpencil_canvas_ps, state);
sh = OVERLAY_shader_gpencil_canvas();
grp = DRW_shgroup_create(sh, psl->gpencil_canvas_ps);
DRW_shgroup_uniform_block(grp, "globalsBlock", G_draw.block_ubo);
DRW_shgroup_uniform_vec4_copy(grp, "color", col_grid);
DRW_shgroup_uniform_vec3_copy(grp, "xAxis", mat[0]);
DRW_shgroup_uniform_vec3_copy(grp, "yAxis", mat[1]);
DRW_shgroup_uniform_vec3_copy(grp, "origin", mat[3]);
DRW_shgroup_uniform_int_copy(grp, "halfLineCount", line_count / 2);
DRW_shgroup_call_procedural_lines(grp, nullptr, line_count);
}
}
static void OVERLAY_edit_gpencil_cache_populate(OVERLAY_Data *vedata, Object *ob)
{
OVERLAY_PrivateData *pd = vedata->stl->pd;
bGPdata *gpd = (bGPdata *)ob->data;
const DRWContextState *draw_ctx = DRW_context_state_get();
View3D *v3d = draw_ctx->v3d;
/* Overlay is only for active object. */
if (ob != draw_ctx->obact) {
return;
}
if (pd->edit_gpencil_wires_grp) {
DRWShadingGroup *grp = DRW_shgroup_create_sub(pd->edit_gpencil_wires_grp);
DRW_shgroup_uniform_vec4_copy(grp, "gpEditColor", gpd->line_color);
struct GPUBatch *geom = DRW_cache_gpencil_edit_lines_get(ob, pd->cfra);
DRW_shgroup_call_no_cull(pd->edit_gpencil_wires_grp, geom, ob);
}
if (pd->edit_gpencil_points_grp) {
const bool show_direction = (v3d->gp_flag & V3D_GP_SHOW_STROKE_DIRECTION) != 0;
DRWShadingGroup *grp = DRW_shgroup_create_sub(pd->edit_gpencil_points_grp);
DRW_shgroup_uniform_float_copy(grp, "doStrokeEndpoints", show_direction);
struct GPUBatch *geom = DRW_cache_gpencil_edit_points_get(ob, pd->cfra);
DRW_shgroup_call_no_cull(grp, geom, ob);
}
if (pd->edit_gpencil_curve_handle_grp) {
struct GPUBatch *geom = DRW_cache_gpencil_edit_curve_handles_get(ob, pd->cfra);
if (geom) {
DRW_shgroup_call_no_cull(pd->edit_gpencil_curve_handle_grp, geom, ob);
}
}
if (pd->edit_gpencil_curve_points_grp) {
struct GPUBatch *geom = DRW_cache_gpencil_edit_curve_points_get(ob, pd->cfra);
if (geom) {
DRW_shgroup_call_no_cull(pd->edit_gpencil_curve_points_grp, geom, ob);
}
}
}
static void overlay_gpencil_draw_stroke_color_name(bGPDlayer *UNUSED(gpl),
bGPDframe *UNUSED(gpf),
bGPDstroke *gps,
void *thunk)
{
Object *ob = (Object *)thunk;
Material *ma = BKE_object_material_get_eval(ob, gps->mat_nr + 1);
if (ma == nullptr) {
return;
}
MaterialGPencilStyle *gp_style = ma->gp_style;
/* skip stroke if it doesn't have any valid data */
if ((gps->points == nullptr) || (gps->totpoints < 1) || (gp_style == nullptr)) {
return;
}
/* check if the color is visible */
if (gp_style->flag & GP_MATERIAL_HIDE) {
return;
}
/* only if selected */
if (gps->flag & GP_STROKE_SELECT) {
for (int i = 0; i < gps->totpoints; i++) {
bGPDspoint *pt = &gps->points[i];
/* Draw name at the first selected point. */
if (pt->flag & GP_SPOINT_SELECT) {
const DRWContextState *draw_ctx = DRW_context_state_get();
ViewLayer *view_layer = draw_ctx->view_layer;
int theme_id = DRW_object_wire_theme_get(ob, view_layer, nullptr);
uchar color[4];
UI_GetThemeColor4ubv(theme_id, color);
float fpt[3];
mul_v3_m4v3(fpt, ob->obmat, &pt->x);
struct DRWTextStore *dt = DRW_text_cache_ensure();
DRW_text_cache_add(dt,
fpt,
ma->id.name + 2,
strlen(ma->id.name + 2),
10,
0,
DRW_TEXT_CACHE_GLOBALSPACE | DRW_TEXT_CACHE_STRING_PTR,
color);
break;
}
}
}
}
static void OVERLAY_gpencil_color_names(Object *ob)
{
const DRWContextState *draw_ctx = DRW_context_state_get();
int cfra = DEG_get_ctime(draw_ctx->depsgraph);
BKE_gpencil_visible_stroke_advanced_iter(
nullptr, ob, nullptr, overlay_gpencil_draw_stroke_color_name, ob, false, cfra);
}
void OVERLAY_gpencil_cache_populate(OVERLAY_Data *vedata, Object *ob)
{
const DRWContextState *draw_ctx = DRW_context_state_get();
View3D *v3d = draw_ctx->v3d;
bGPdata *gpd = (bGPdata *)ob->data;
if (gpd == nullptr) {
return;
}
if (GPENCIL_ANY_MODE(gpd)) {
OVERLAY_edit_gpencil_cache_populate(vedata, ob);
}
/* don't show object extras in set's */
if ((ob->base_flag & (BASE_FROM_SET | BASE_FROM_DUPLI)) == 0) {
if ((v3d->gp_flag & V3D_GP_SHOW_MATERIAL_NAME) && (ob->mode == OB_MODE_EDIT_GPENCIL) &&
DRW_state_show_text()) {
OVERLAY_gpencil_color_names(ob);
}
}
}
void OVERLAY_gpencil_draw(OVERLAY_Data *vedata)
{
OVERLAY_PassList *psl = vedata->psl;
if (psl->gpencil_canvas_ps) {
DRW_draw_pass(psl->gpencil_canvas_ps);
}
}
void OVERLAY_edit_gpencil_draw(OVERLAY_Data *vedata)
{
OVERLAY_PassList *psl = vedata->psl;
if (psl->edit_gpencil_gizmos_ps) {
DRW_draw_pass(psl->edit_gpencil_gizmos_ps);
}
if (psl->edit_gpencil_ps) {
DRW_draw_pass(psl->edit_gpencil_ps);
}
/* Curve edit handles. */
if (psl->edit_gpencil_curve_ps) {
DRW_draw_pass(psl->edit_gpencil_curve_ps);
}
}
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