diff options
Diffstat (limited to 'source/blender/draw/engines/gpencil/gpencil_draw_utils.c')
| -rw-r--r-- | source/blender/draw/engines/gpencil/gpencil_draw_utils.c | 1336 |
1 files changed, 1336 insertions, 0 deletions
diff --git a/source/blender/draw/engines/gpencil/gpencil_draw_utils.c b/source/blender/draw/engines/gpencil/gpencil_draw_utils.c new file mode 100644 index 00000000000..76cb1405a71 --- /dev/null +++ b/source/blender/draw/engines/gpencil/gpencil_draw_utils.c @@ -0,0 +1,1336 @@ +/* + * Copyright 2017, Blender Foundation. + * + * 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. + * + * Contributor(s): Antonio Vazquez + * + */ + +/** \file blender/draw/engines/gpencil/gpencil_draw_utils.c + * \ingroup draw + */ + +#include "BLI_polyfill_2d.h" + +#include "DRW_engine.h" +#include "DRW_render.h" + +#include "BKE_brush.h" +#include "BKE_gpencil.h" +#include "BKE_gpencil_modifier.h" +#include "BKE_image.h" +#include "BKE_material.h" + +#include "ED_gpencil.h" +#include "ED_view3d.h" + +#include "DNA_gpencil_types.h" +#include "DNA_material_types.h" +#include "DNA_view3d_types.h" +#include "DNA_gpencil_modifier_types.h" + + /* If builtin shaders are needed */ +#include "GPU_shader.h" +#include "GPU_texture.h" + +/* For EvaluationContext... */ +#include "DEG_depsgraph.h" +#include "DEG_depsgraph_query.h" + +#include "IMB_imbuf_types.h" + +#include "gpencil_engine.h" + +/* fill type to communicate to shader */ +#define SOLID 0 +#define GRADIENT 1 +#define RADIAL 2 +#define CHESS 3 +#define TEXTURE 4 +#define PATTERN 5 + +/* Helper for doing all the checks on whether a stroke can be drawn */ +static bool gpencil_can_draw_stroke(struct MaterialGPencilStyle *gp_style, const bGPDstroke *gps, + const bool onion, const bool is_mat_preview) +{ + /* skip stroke if it doesn't have any valid data */ + if ((gps->points == NULL) || (gps->totpoints < 1) || (gp_style == NULL)) + return false; + + /* if mat preview render always visible */ + if (is_mat_preview) { + return true; + } + + /* check if the color is visible */ + if ((gp_style == NULL) || + (gp_style->flag & GP_STYLE_COLOR_HIDE) || + (onion && (gp_style->flag & GP_STYLE_COLOR_ONIONSKIN))) + { + return false; + } + + /* stroke can be drawn */ + return true; +} + +/* calc bounding box in 2d using flat projection data */ +static void gpencil_calc_2d_bounding_box( + const float(*points2d)[2], int totpoints, float minv[2], float maxv[2], bool expand) +{ + minv[0] = points2d[0][0]; + minv[1] = points2d[0][1]; + maxv[0] = points2d[0][0]; + maxv[1] = points2d[0][1]; + + for (int i = 1; i < totpoints; i++) { + /* min */ + if (points2d[i][0] < minv[0]) { + minv[0] = points2d[i][0]; + } + if (points2d[i][1] < minv[1]) { + minv[1] = points2d[i][1]; + } + /* max */ + if (points2d[i][0] > maxv[0]) { + maxv[0] = points2d[i][0]; + } + if (points2d[i][1] > maxv[1]) { + maxv[1] = points2d[i][1]; + } + } + /* If not expanded, use a perfect square */ + if (expand == false) { + if (maxv[0] > maxv[1]) { + maxv[1] = maxv[0]; + } + else { + maxv[0] = maxv[1]; + } + } +} + +/* calc texture coordinates using flat projected points */ +static void gpencil_calc_stroke_fill_uv( + const float(*points2d)[2], int totpoints, float minv[2], float maxv[2], float(*r_uv)[2]) +{ + float d[2]; + d[0] = maxv[0] - minv[0]; + d[1] = maxv[1] - minv[1]; + for (int i = 0; i < totpoints; i++) { + r_uv[i][0] = (points2d[i][0] - minv[0]) / d[0]; + r_uv[i][1] = (points2d[i][1] - minv[1]) / d[1]; + } +} + +/* Get points of stroke always flat to view not affected by camera view or view position */ +static void gpencil_stroke_2d_flat(const bGPDspoint *points, int totpoints, float(*points2d)[2], int *r_direction) +{ + const bGPDspoint *pt0 = &points[0]; + const bGPDspoint *pt1 = &points[1]; + const bGPDspoint *pt3 = &points[(int)(totpoints * 0.75)]; + + float locx[3]; + float locy[3]; + float loc3[3]; + float normal[3]; + + /* local X axis (p0 -> p1) */ + sub_v3_v3v3(locx, &pt1->x, &pt0->x); + + /* point vector at 3/4 */ + sub_v3_v3v3(loc3, &pt3->x, &pt0->x); + + /* vector orthogonal to polygon plane */ + cross_v3_v3v3(normal, locx, loc3); + + /* local Y axis (cross to normal/x axis) */ + cross_v3_v3v3(locy, normal, locx); + + /* Normalize vectors */ + normalize_v3(locx); + normalize_v3(locy); + + /* Get all points in local space */ + for (int i = 0; i < totpoints; i++) { + const bGPDspoint *pt = &points[i]; + float loc[3]; + + /* Get local space using first point as origin */ + sub_v3_v3v3(loc, &pt->x, &pt0->x); + + points2d[i][0] = dot_v3v3(loc, locx); + points2d[i][1] = dot_v3v3(loc, locy); + } + + /* Concave (-1), Convex (1), or Autodetect (0)? */ + *r_direction = (int)locy[2]; +} + +/* Triangulate stroke for high quality fill (this is done only if cache is null or stroke was modified) */ +void DRW_gpencil_triangulate_stroke_fill(bGPDstroke *gps) +{ + BLI_assert(gps->totpoints >= 3); + + /* allocate memory for temporary areas */ + gps->tot_triangles = gps->totpoints - 2; + uint(*tmp_triangles)[3] = MEM_mallocN(sizeof(*tmp_triangles) * gps->tot_triangles, "GP Stroke temp triangulation"); + float(*points2d)[2] = MEM_mallocN(sizeof(*points2d) * gps->totpoints, "GP Stroke temp 2d points"); + float(*uv)[2] = MEM_mallocN(sizeof(*uv) * gps->totpoints, "GP Stroke temp 2d uv data"); + + int direction = 0; + + /* convert to 2d and triangulate */ + gpencil_stroke_2d_flat(gps->points, gps->totpoints, points2d, &direction); + BLI_polyfill_calc(points2d, (uint)gps->totpoints, direction, tmp_triangles); + + /* calc texture coordinates automatically */ + float minv[2]; + float maxv[2]; + /* first needs bounding box data */ + gpencil_calc_2d_bounding_box(points2d, gps->totpoints, minv, maxv, false); + /* calc uv data */ + gpencil_calc_stroke_fill_uv(points2d, gps->totpoints, minv, maxv, uv); + + /* Number of triangles */ + gps->tot_triangles = gps->totpoints - 2; + /* save triangulation data in stroke cache */ + if (gps->tot_triangles > 0) { + if (gps->triangles == NULL) { + gps->triangles = MEM_callocN(sizeof(*gps->triangles) * gps->tot_triangles, "GP Stroke triangulation"); + } + else { + gps->triangles = MEM_recallocN(gps->triangles, sizeof(*gps->triangles) * gps->tot_triangles); + } + + for (int i = 0; i < gps->tot_triangles; i++) { + bGPDtriangle *stroke_triangle = &gps->triangles[i]; + memcpy(gps->triangles[i].verts, tmp_triangles[i], sizeof(uint[3])); + /* copy texture coordinates */ + copy_v2_v2(stroke_triangle->uv[0], uv[tmp_triangles[i][0]]); + copy_v2_v2(stroke_triangle->uv[1], uv[tmp_triangles[i][1]]); + copy_v2_v2(stroke_triangle->uv[2], uv[tmp_triangles[i][2]]); + } + } + else { + /* No triangles needed - Free anything allocated previously */ + if (gps->triangles) + MEM_freeN(gps->triangles); + + gps->triangles = NULL; + } + + /* disable recalculation flag */ + if (gps->flag & GP_STROKE_RECALC_CACHES) { + gps->flag &= ~GP_STROKE_RECALC_CACHES; + } + + /* clear memory */ + MEM_SAFE_FREE(tmp_triangles); + MEM_SAFE_FREE(points2d); + MEM_SAFE_FREE(uv); +} + +/* recalc the internal geometry caches for fill and uvs */ +static void DRW_gpencil_recalc_geometry_caches(Object *ob, MaterialGPencilStyle *gp_style, bGPDstroke *gps) +{ + if (gps->flag & GP_STROKE_RECALC_CACHES) { + /* Calculate triangles cache for filling area (must be done only after changes) */ + if ((gps->tot_triangles == 0) || (gps->triangles == NULL)) { + if ((gps->totpoints > 2) && + ((gp_style->fill_rgba[3] > GPENCIL_ALPHA_OPACITY_THRESH) || (gp_style->fill_style > 0))) + { + DRW_gpencil_triangulate_stroke_fill(gps); + } + } + + /* calc uv data along the stroke */ + ED_gpencil_calc_stroke_uv(ob, gps); + + /* clear flag */ + gps->flag &= ~GP_STROKE_RECALC_CACHES; + } +} + +/* create shading group for filling */ +static DRWShadingGroup *DRW_gpencil_shgroup_fill_create( + GPENCIL_e_data *e_data, GPENCIL_Data *vedata, DRWPass *pass, + GPUShader *shader, bGPdata *gpd, MaterialGPencilStyle *gp_style, int id) +{ + GPENCIL_StorageList *stl = ((GPENCIL_Data *)vedata)->stl; + + /* e_data.gpencil_fill_sh */ + DRWShadingGroup *grp = DRW_shgroup_create(shader, pass); + + DRW_shgroup_uniform_vec4(grp, "color2", gp_style->mix_rgba, 1); + + /* set style type */ + switch (gp_style->fill_style) { + case GP_STYLE_FILL_STYLE_SOLID: + stl->shgroups[id].fill_style = SOLID; + break; + case GP_STYLE_FILL_STYLE_GRADIENT: + if (gp_style->gradient_type == GP_STYLE_GRADIENT_LINEAR) { + stl->shgroups[id].fill_style = GRADIENT; + } + else { + stl->shgroups[id].fill_style = RADIAL; + } + break; + case GP_STYLE_FILL_STYLE_CHESSBOARD: + stl->shgroups[id].fill_style = CHESS; + break; + case GP_STYLE_FILL_STYLE_TEXTURE: + if (gp_style->flag & GP_STYLE_FILL_PATTERN) { + stl->shgroups[id].fill_style = PATTERN; + } + else { + stl->shgroups[id].fill_style = TEXTURE; + } + break; + default: + stl->shgroups[id].fill_style = GP_STYLE_FILL_STYLE_SOLID; + break; + } + DRW_shgroup_uniform_int(grp, "fill_type", &stl->shgroups[id].fill_style, 1); + + DRW_shgroup_uniform_float(grp, "mix_factor", &gp_style->mix_factor, 1); + + DRW_shgroup_uniform_float(grp, "gradient_angle", &gp_style->gradient_angle, 1); + DRW_shgroup_uniform_float(grp, "gradient_radius", &gp_style->gradient_radius, 1); + DRW_shgroup_uniform_float(grp, "pattern_gridsize", &gp_style->pattern_gridsize, 1); + DRW_shgroup_uniform_vec2(grp, "gradient_scale", gp_style->gradient_scale, 1); + DRW_shgroup_uniform_vec2(grp, "gradient_shift", gp_style->gradient_shift, 1); + + DRW_shgroup_uniform_float(grp, "texture_angle", &gp_style->texture_angle, 1); + DRW_shgroup_uniform_vec2(grp, "texture_scale", gp_style->texture_scale, 1); + DRW_shgroup_uniform_vec2(grp, "texture_offset", gp_style->texture_offset, 1); + DRW_shgroup_uniform_float(grp, "texture_opacity", &gp_style->texture_opacity, 1); + + stl->shgroups[id].texture_mix = gp_style->flag & GP_STYLE_COLOR_TEX_MIX ? 1 : 0; + DRW_shgroup_uniform_int(grp, "texture_mix", &stl->shgroups[id].texture_mix, 1); + + stl->shgroups[id].texture_flip = gp_style->flag & GP_STYLE_COLOR_FLIP_FILL ? 1 : 0; + DRW_shgroup_uniform_int(grp, "texture_flip", &stl->shgroups[id].texture_flip, 1); + + DRW_shgroup_uniform_int(grp, "xraymode", (const int *) &gpd->xray_mode, 1); + /* image texture */ + if ((gp_style->flag & GP_STYLE_COLOR_TEX_MIX) || + (gp_style->fill_style & GP_STYLE_FILL_STYLE_TEXTURE)) + { + ImBuf *ibuf; + Image *image = gp_style->ima; + ImageUser iuser = { NULL }; + void *lock; + + iuser.ok = true; + + ibuf = BKE_image_acquire_ibuf(image, &iuser, &lock); + + if (ibuf == NULL || ibuf->rect == NULL) { + BKE_image_release_ibuf(image, ibuf, NULL); + } + else { + GPUTexture *texture = GPU_texture_from_blender(gp_style->ima, &iuser, GL_TEXTURE_2D, true, 0.0); + DRW_shgroup_uniform_texture(grp, "myTexture", texture); + + stl->shgroups[id].texture_clamp = gp_style->flag & GP_STYLE_COLOR_TEX_CLAMP ? 1 : 0; + DRW_shgroup_uniform_int(grp, "texture_clamp", &stl->shgroups[id].texture_clamp, 1); + + BKE_image_release_ibuf(image, ibuf, NULL); + } + } + else { + /* if no texture defined, need a blank texture to avoid errors in draw manager */ + DRW_shgroup_uniform_texture(grp, "myTexture", e_data->gpencil_blank_texture); + stl->shgroups[id].texture_clamp = 0; + DRW_shgroup_uniform_int(grp, "texture_clamp", &stl->shgroups[id].texture_clamp, 1); + } + + return grp; +} + +/* create shading group for strokes */ +DRWShadingGroup *DRW_gpencil_shgroup_stroke_create( + GPENCIL_e_data *e_data, GPENCIL_Data *vedata, DRWPass *pass, GPUShader *shader, Object *ob, + bGPdata *gpd, MaterialGPencilStyle *gp_style, int id, bool onion) +{ + GPENCIL_StorageList *stl = ((GPENCIL_Data *)vedata)->stl; + const float *viewport_size = DRW_viewport_size_get(); + + /* e_data.gpencil_stroke_sh */ + DRWShadingGroup *grp = DRW_shgroup_create(shader, pass); + + DRW_shgroup_uniform_vec2(grp, "Viewport", viewport_size, 1); + + DRW_shgroup_uniform_float(grp, "pixsize", stl->storage->pixsize, 1); + DRW_shgroup_uniform_float(grp, "pixelsize", &U.pixelsize, 1); + + /* avoid wrong values */ + if ((gpd) && (gpd->pixfactor == 0)) { + gpd->pixfactor = GP_DEFAULT_PIX_FACTOR; + } + + /* object scale and depth */ + if ((ob) && (id > -1)) { + stl->shgroups[id].obj_scale = (ob->size[0] + ob->size[1] + ob->size[2]) / 3.0f; + DRW_shgroup_uniform_float(grp, "objscale", &stl->shgroups[id].obj_scale, 1); + stl->shgroups[id].keep_size = (int)((gpd) && (gpd->flag & GP_DATA_STROKE_KEEPTHICKNESS)); + DRW_shgroup_uniform_int(grp, "keep_size", &stl->shgroups[id].keep_size, 1); + + stl->shgroups[id].stroke_style = gp_style->stroke_style; + stl->shgroups[id].color_type = GPENCIL_COLOR_SOLID; + if ((gp_style->stroke_style == GP_STYLE_STROKE_STYLE_TEXTURE) && (!onion)) { + stl->shgroups[id].color_type = GPENCIL_COLOR_TEXTURE; + if (gp_style->flag & GP_STYLE_STROKE_PATTERN) { + stl->shgroups[id].color_type = GPENCIL_COLOR_PATTERN; + } + } + DRW_shgroup_uniform_int(grp, "color_type", &stl->shgroups[id].color_type, 1); + DRW_shgroup_uniform_float(grp, "pixfactor", &gpd->pixfactor, 1); + } + else { + stl->storage->obj_scale = 1.0f; + stl->storage->keep_size = 0; + stl->storage->pixfactor = GP_DEFAULT_PIX_FACTOR; + DRW_shgroup_uniform_float(grp, "objscale", &stl->storage->obj_scale, 1); + DRW_shgroup_uniform_int(grp, "keep_size", &stl->storage->keep_size, 1); + DRW_shgroup_uniform_int(grp, "color_type", &stl->storage->color_type, 1); + if (gpd) { + DRW_shgroup_uniform_float(grp, "pixfactor", &gpd->pixfactor, 1); + } + else { + DRW_shgroup_uniform_float(grp, "pixfactor", &stl->storage->pixfactor, 1); + } + } + + if ((gpd) && (id > -1)) { + DRW_shgroup_uniform_int(grp, "xraymode", (const int *) &gpd->xray_mode, 1); + } + else { + /* for drawing always on front */ + DRW_shgroup_uniform_int(grp, "xraymode", &stl->storage->xray, 1); + } + + /* image texture for pattern */ + if ((gp_style) && (gp_style->stroke_style == GP_STYLE_STROKE_STYLE_TEXTURE) && (!onion)) { + ImBuf *ibuf; + Image *image = gp_style->sima; + ImageUser iuser = { NULL }; + void *lock; + + iuser.ok = true; + + ibuf = BKE_image_acquire_ibuf(image, &iuser, &lock); + + if (ibuf == NULL || ibuf->rect == NULL) { + BKE_image_release_ibuf(image, ibuf, NULL); + } + else { + GPUTexture *texture = GPU_texture_from_blender(gp_style->sima, &iuser, GL_TEXTURE_2D, true, 0.0f); + DRW_shgroup_uniform_texture(grp, "myTexture", texture); + + BKE_image_release_ibuf(image, ibuf, NULL); + } + } + else { + /* if no texture defined, need a blank texture to avoid errors in draw manager */ + DRW_shgroup_uniform_texture(grp, "myTexture", e_data->gpencil_blank_texture); + } + + return grp; +} + +/* create shading group for volumetrics */ +static DRWShadingGroup *DRW_gpencil_shgroup_point_create( + GPENCIL_e_data *e_data, GPENCIL_Data *vedata, DRWPass *pass, GPUShader *shader, Object *ob, + bGPdata *gpd, MaterialGPencilStyle *gp_style, int id, bool onion) +{ + GPENCIL_StorageList *stl = ((GPENCIL_Data *)vedata)->stl; + const float *viewport_size = DRW_viewport_size_get(); + + /* e_data.gpencil_stroke_sh */ + DRWShadingGroup *grp = DRW_shgroup_create(shader, pass); + + DRW_shgroup_uniform_vec2(grp, "Viewport", viewport_size, 1); + DRW_shgroup_uniform_float(grp, "pixsize", stl->storage->pixsize, 1); + DRW_shgroup_uniform_float(grp, "pixelsize", &U.pixelsize, 1); + + /* avoid wrong values */ + if ((gpd) && (gpd->pixfactor == 0)) { + gpd->pixfactor = GP_DEFAULT_PIX_FACTOR; + } + + /* object scale and depth */ + if ((ob) && (id > -1)) { + stl->shgroups[id].obj_scale = (ob->size[0] + ob->size[1] + ob->size[2]) / 3.0f; + DRW_shgroup_uniform_float(grp, "objscale", &stl->shgroups[id].obj_scale, 1); + stl->shgroups[id].keep_size = (int)((gpd) && (gpd->flag & GP_DATA_STROKE_KEEPTHICKNESS)); + DRW_shgroup_uniform_int(grp, "keep_size", &stl->shgroups[id].keep_size, 1); + + stl->shgroups[id].mode = gp_style->mode; + stl->shgroups[id].stroke_style = gp_style->stroke_style; + stl->shgroups[id].color_type = GPENCIL_COLOR_SOLID; + if ((gp_style->stroke_style == GP_STYLE_STROKE_STYLE_TEXTURE) && (!onion)) { + stl->shgroups[id].color_type = GPENCIL_COLOR_TEXTURE; + if (gp_style->flag & GP_STYLE_STROKE_PATTERN) { + stl->shgroups[id].color_type = GPENCIL_COLOR_PATTERN; + } + } + DRW_shgroup_uniform_int(grp, "color_type", &stl->shgroups[id].color_type, 1); + DRW_shgroup_uniform_int(grp, "mode", &stl->shgroups[id].mode, 1); + DRW_shgroup_uniform_float(grp, "pixfactor", &gpd->pixfactor, 1); + } + else { + stl->storage->obj_scale = 1.0f; + stl->storage->keep_size = 0; + stl->storage->pixfactor = GP_DEFAULT_PIX_FACTOR; + stl->storage->mode = gp_style->mode; + DRW_shgroup_uniform_float(grp, "objscale", &stl->storage->obj_scale, 1); + DRW_shgroup_uniform_int(grp, "keep_size", &stl->storage->keep_size, 1); + DRW_shgroup_uniform_int(grp, "color_type", &stl->storage->color_type, 1); + DRW_shgroup_uniform_int(grp, "mode", &stl->storage->mode, 1); + if (gpd) { + DRW_shgroup_uniform_float(grp, "pixfactor", &gpd->pixfactor, 1); + } + else { + DRW_shgroup_uniform_float(grp, "pixfactor", &stl->storage->pixfactor, 1); + } + } + + if (gpd) { + DRW_shgroup_uniform_int(grp, "xraymode", (const int *)&gpd->xray_mode, 1); + } + else { + /* for drawing always on front */ + DRW_shgroup_uniform_int(grp, "xraymode", &stl->storage->xray, 1); + } + + /* image texture */ + if ((gp_style) && (gp_style->stroke_style == GP_STYLE_STROKE_STYLE_TEXTURE) && (!onion)) { + ImBuf *ibuf; + Image *image = gp_style->sima; + ImageUser iuser = { NULL }; + void *lock; + + iuser.ok = true; + + ibuf = BKE_image_acquire_ibuf(image, &iuser, &lock); + + if (ibuf == NULL || ibuf->rect == NULL) { + BKE_image_release_ibuf(image, ibuf, NULL); + } + else { + GPUTexture *texture = GPU_texture_from_blender(gp_style->sima, &iuser, GL_TEXTURE_2D, true, 0.0f); + DRW_shgroup_uniform_texture(grp, "myTexture", texture); + + BKE_image_release_ibuf(image, ibuf, NULL); + } + } + else { + /* if no texture defined, need a blank texture to avoid errors in draw manager */ + DRW_shgroup_uniform_texture(grp, "myTexture", e_data->gpencil_blank_texture); + } + + return grp; +} + +/* add fill shading group to pass */ +static void gpencil_add_fill_shgroup( + GpencilBatchCache *cache, DRWShadingGroup *fillgrp, + Object *ob, bGPDlayer *gpl, bGPDframe *gpf, bGPDstroke *gps, + const float tintcolor[4], const bool onion, const bool custonion) +{ + MaterialGPencilStyle *gp_style = BKE_material_gpencil_settings_get(ob, gps->mat_nr + 1); + if (gps->totpoints >= 3) { + float tfill[4]; + /* set color using material, tint color and opacity */ + interp_v3_v3v3(tfill, gps->runtime.tmp_fill_rgba, tintcolor, tintcolor[3]); + tfill[3] = gps->runtime.tmp_fill_rgba[3] * gpl->opacity; + if ((tfill[3] > GPENCIL_ALPHA_OPACITY_THRESH) || (gp_style->fill_style > 0)) { + const float *color; + if (!onion) { + color = tfill; + } + else { + if (custonion) { + color = tintcolor; + } + else { + ARRAY_SET_ITEMS(tfill, UNPACK3(gps->runtime.tmp_fill_rgba), tintcolor[3]); + color = tfill; + } + } + if (cache->is_dirty) { + gpencil_batch_cache_check_free_slots(ob); + cache->batch_fill[cache->cache_idx] = DRW_gpencil_get_fill_geom(ob, gps, color); + } + DRW_shgroup_call_add(fillgrp, cache->batch_fill[cache->cache_idx], gpf->runtime.viewmatrix); + } + } +} + +/* add stroke shading group to pass */ +static void gpencil_add_stroke_shgroup(GpencilBatchCache *cache, DRWShadingGroup *strokegrp, + Object *ob, bGPDlayer *gpl, bGPDframe *gpf, bGPDstroke *gps, + const float opacity, const float tintcolor[4], const bool onion, const bool custonion) +{ + float tcolor[4]; + float ink[4]; + short sthickness; + MaterialGPencilStyle *gp_style = BKE_material_gpencil_settings_get(ob, gps->mat_nr + 1); + + /* set color using base color, tint color and opacity */ + if (!onion) { + /* if special stroke, use fill color as stroke color */ + if (gps->flag & GP_STROKE_NOFILL) { + interp_v3_v3v3(tcolor, gps->runtime.tmp_fill_rgba, tintcolor, tintcolor[3]); + tcolor[3] = gps->runtime.tmp_fill_rgba[3] * opacity; + } + else { + interp_v3_v3v3(tcolor, gps->runtime.tmp_stroke_rgba, tintcolor, tintcolor[3]); + tcolor[3] = gps->runtime.tmp_stroke_rgba[3] * opacity; + } + copy_v4_v4(ink, tcolor); + } + else { + if (custonion) { + copy_v4_v4(ink, tintcolor); + } + else { + ARRAY_SET_ITEMS(tcolor, UNPACK3(gps->runtime.tmp_stroke_rgba), opacity); + copy_v4_v4(ink, tcolor); + } + } + + sthickness = gps->thickness + gpl->line_change; + CLAMP_MIN(sthickness, 1); + if (cache->is_dirty) { + gpencil_batch_cache_check_free_slots(ob); + if ((gps->totpoints > 1) && (gp_style->mode == GP_STYLE_MODE_LINE)) { + cache->batch_stroke[cache->cache_idx] = DRW_gpencil_get_stroke_geom(gpf, gps, sthickness, ink); + } + else { + cache->batch_stroke[cache->cache_idx] = DRW_gpencil_get_point_geom(gps, sthickness, ink); + } + } + DRW_shgroup_call_add(strokegrp, cache->batch_stroke[cache->cache_idx], gpf->runtime.viewmatrix); +} + +/* add edit points shading group to pass */ +static void gpencil_add_editpoints_shgroup( + GPENCIL_StorageList *stl, GpencilBatchCache *cache, ToolSettings *UNUSED(ts), Object *ob, + bGPdata *gpd, bGPDlayer *gpl, bGPDframe *gpf, bGPDstroke *gps) +{ + const DRWContextState *draw_ctx = DRW_context_state_get(); + View3D *v3d = draw_ctx->v3d; + MaterialGPencilStyle *gp_style = BKE_material_gpencil_settings_get(ob, gps->mat_nr + 1); + + /* alpha factor for edit points/line to make them more subtle */ + float edit_alpha = v3d->vertex_opacity; + + if (GPENCIL_ANY_EDIT_MODE(gpd)) { + Object *obact = DRW_context_state_get()->obact; + if ((!obact) || (obact->type != OB_GPENCIL)) { + return; + } + const bool is_weight_paint = (gpd) && (gpd->flag & GP_DATA_STROKE_WEIGHTMODE); + + /* line of the original stroke */ + if (cache->is_dirty) { + gpencil_batch_cache_check_free_slots(ob); + cache->batch_edlin[cache->cache_idx] = DRW_gpencil_get_edlin_geom(gps, edit_alpha, gpd->flag); + } + if (cache->batch_edlin[cache->cache_idx]) { + if ((obact) && (obact == ob) && + ((v3d->flag2 & V3D_RENDER_OVERRIDE) == 0) && + (v3d->flag3 & V3D_GP_SHOW_EDIT_LINES)) + { + DRW_shgroup_call_add( + stl->g_data->shgrps_edit_line, + cache->batch_edlin[cache->cache_idx], + gpf->runtime.viewmatrix); + } + } + /* edit points */ + if ((gps->flag & GP_STROKE_SELECT) || (is_weight_paint)) { + if ((gpl->flag & GP_LAYER_UNLOCK_COLOR) || ((gp_style->flag & GP_STYLE_COLOR_LOCKED) == 0)) { + if (cache->is_dirty) { + gpencil_batch_cache_check_free_slots(ob); + cache->batch_edit[cache->cache_idx] = DRW_gpencil_get_edit_geom(gps, edit_alpha, gpd->flag); + } + if (cache->batch_edit[cache->cache_idx]) { + if ((obact) && (obact == ob)) { + /* edit pass */ + DRW_shgroup_call_add( + stl->g_data->shgrps_edit_point, + cache->batch_edit[cache->cache_idx], + gpf->runtime.viewmatrix); + } + } + } + } + } +} + +/* function to draw strokes for onion only */ +static void gpencil_draw_onion_strokes( + GpencilBatchCache *cache, GPENCIL_e_data *e_data, void *vedata, Object *ob, + bGPdata *gpd, bGPDlayer *gpl, bGPDframe *gpf, + const float opacity, const float tintcolor[4], const bool custonion) +{ + GPENCIL_PassList *psl = ((GPENCIL_Data *)vedata)->psl; + GPENCIL_StorageList *stl = ((GPENCIL_Data *)vedata)->stl; + Depsgraph *depsgraph = DRW_context_state_get()->depsgraph; + + float viewmatrix[4][4]; + + /* get parent matrix and save as static data */ + ED_gpencil_parent_location(depsgraph, ob, gpd, gpl, viewmatrix); + copy_m4_m4(gpf->runtime.viewmatrix, viewmatrix); + + for (bGPDstroke *gps = gpf->strokes.first; gps; gps = gps->next) { + MaterialGPencilStyle *gp_style = BKE_material_gpencil_settings_get(ob, gps->mat_nr + 1); + copy_v4_v4(gps->runtime.tmp_stroke_rgba, gp_style->stroke_rgba); + copy_v4_v4(gps->runtime.tmp_fill_rgba, gp_style->fill_rgba); + + int id = stl->storage->shgroup_id; + /* check if stroke can be drawn */ + if (gpencil_can_draw_stroke(gp_style, gps, true, false) == false) { + continue; + } + /* limit the number of shading groups */ + if (id >= GPENCIL_MAX_SHGROUPS) { + continue; + } + + stl->shgroups[id].shgrps_fill = NULL; + if ((gps->totpoints > 1) && (gp_style->mode == GP_STYLE_MODE_LINE)) { + stl->shgroups[id].shgrps_stroke = DRW_gpencil_shgroup_stroke_create( + e_data, vedata, psl->stroke_pass, e_data->gpencil_stroke_sh, ob, gpd, gp_style, id, true); + } + else { + stl->shgroups[id].shgrps_stroke = DRW_gpencil_shgroup_point_create( + e_data, vedata, psl->stroke_pass, e_data->gpencil_point_sh, ob, gpd, gp_style, id, true); + } + + /* stroke */ + gpencil_add_stroke_shgroup( + cache, stl->shgroups[id].shgrps_stroke, ob, gpl, gpf, gps, opacity, tintcolor, true, custonion); + + stl->storage->shgroup_id++; + cache->cache_idx++; + } +} + + +/* main function to draw strokes */ +static void gpencil_draw_strokes( + GpencilBatchCache *cache, GPENCIL_e_data *e_data, void *vedata, ToolSettings *ts, Object *ob, + bGPdata *gpd, bGPDlayer *gpl, bGPDframe *src_gpf, bGPDframe *derived_gpf, + const float opacity, const float tintcolor[4], const bool custonion) +{ + GPENCIL_PassList *psl = ((GPENCIL_Data *)vedata)->psl; + GPENCIL_StorageList *stl = ((GPENCIL_Data *)vedata)->stl; + const DRWContextState *draw_ctx = DRW_context_state_get(); + Scene *scene = draw_ctx->scene; + View3D *v3d = draw_ctx->v3d; + bGPDstroke *gps, *src_gps; + DRWShadingGroup *fillgrp; + DRWShadingGroup *strokegrp; + float viewmatrix[4][4]; + const bool is_multiedit = (bool)GPENCIL_MULTIEDIT_SESSIONS_ON(gpd); + const bool playing = (bool)stl->storage->playing; + const bool is_render = (bool)stl->storage->is_render; + const bool is_mat_preview = (bool)stl->storage->is_mat_preview; + const bool overlay_multiedit = v3d != NULL ? (v3d->flag3 & V3D_GP_SHOW_MULTIEDIT_LINES) : true; + + /* Get evaluation context */ + /* NOTE: We must check if C is valid, otherwise we get crashes when trying to save files + * (i.e. the thumbnail offscreen rendering fails) + */ + Depsgraph *depsgraph = DRW_context_state_get()->depsgraph; + + /* get parent matrix and save as static data */ + ED_gpencil_parent_location(depsgraph, ob, gpd, gpl, viewmatrix); + copy_m4_m4(derived_gpf->runtime.viewmatrix, viewmatrix); + + /* apply geometry modifiers */ + if ((cache->is_dirty) && (ob->greasepencil_modifiers.first) && (!is_multiedit)) { + if (!stl->storage->simplify_modif) { + if (BKE_gpencil_has_geometry_modifiers(ob)) { + BKE_gpencil_geometry_modifiers(depsgraph, ob, gpl, derived_gpf, stl->storage->is_render); + } + } + } + + if (src_gpf) { + src_gps = src_gpf->strokes.first; + } + else { + src_gps = NULL; + } + + for (gps = derived_gpf->strokes.first; gps; gps = gps->next) { + MaterialGPencilStyle *gp_style = BKE_material_gpencil_settings_get(ob, gps->mat_nr + 1); + + /* check if stroke can be drawn */ + if (gpencil_can_draw_stroke(gp_style, gps, false, is_mat_preview) == false) { + continue; + } + /* limit the number of shading groups */ + if (stl->storage->shgroup_id >= GPENCIL_MAX_SHGROUPS) { + continue; + } + + /* be sure recalc all chache in source stroke to avoid recalculation when frame change + * and improve fps */ + if (src_gps) { + DRW_gpencil_recalc_geometry_caches(ob, gp_style, src_gps); + } + + /* if the fill has any value, it's considered a fill and is not drawn if simplify fill is enabled */ + if ((stl->storage->simplify_fill) && (scene->r.simplify_gpencil & SIMPLIFY_GPENCIL_REMOVE_FILL_LINE)) { + if ((gp_style->fill_rgba[3] > GPENCIL_ALPHA_OPACITY_THRESH) || + (gp_style->fill_style > GP_STYLE_FILL_STYLE_SOLID)) + { + continue; + } + } + + if ((gpl->actframe->framenum == derived_gpf->framenum) || + (!is_multiedit) || (overlay_multiedit)) + { + int id = stl->storage->shgroup_id; + if (gps->totpoints > 0) { + if ((gps->totpoints > 2) && (!stl->storage->simplify_fill) && + ((gp_style->fill_rgba[3] > GPENCIL_ALPHA_OPACITY_THRESH) || (gp_style->fill_style > 0)) && + ((gps->flag & GP_STROKE_NOFILL) == 0)) + { + stl->shgroups[id].shgrps_fill = DRW_gpencil_shgroup_fill_create( + e_data, vedata, psl->stroke_pass, e_data->gpencil_fill_sh, gpd, gp_style, id); + } + else { + stl->shgroups[id].shgrps_fill = NULL; + } + if ((gp_style->mode == GP_STYLE_MODE_LINE) && (gps->totpoints > 1)) { + stl->shgroups[id].shgrps_stroke = DRW_gpencil_shgroup_stroke_create( + e_data, vedata, psl->stroke_pass, e_data->gpencil_stroke_sh, ob, gpd, gp_style, id, false); + } + else { + stl->shgroups[id].shgrps_stroke = DRW_gpencil_shgroup_point_create( + e_data, vedata, psl->stroke_pass, e_data->gpencil_point_sh, ob, gpd, gp_style, id, false); + } + } + else { + stl->shgroups[id].shgrps_fill = NULL; + stl->shgroups[id].shgrps_stroke = NULL; + } + stl->storage->shgroup_id++; + + fillgrp = stl->shgroups[id].shgrps_fill; + strokegrp = stl->shgroups[id].shgrps_stroke; + + /* copy color to temp fields to apply temporal changes in the stroke */ + copy_v4_v4(gps->runtime.tmp_stroke_rgba, gp_style->stroke_rgba); + copy_v4_v4(gps->runtime.tmp_fill_rgba, gp_style->fill_rgba); + + /* apply modifiers (only modify geometry, but not create ) */ + if ((cache->is_dirty) && (ob->greasepencil_modifiers.first) && (!is_multiedit)) { + if (!stl->storage->simplify_modif) { + BKE_gpencil_stroke_modifiers(depsgraph, ob, gpl, derived_gpf, gps, stl->storage->is_render); + } + } + + /* fill */ + if ((fillgrp) && (!stl->storage->simplify_fill)) { + gpencil_add_fill_shgroup( + cache, fillgrp, ob, gpl, derived_gpf, gps, tintcolor, false, custonion); + } + /* stroke */ + if (strokegrp) { + gpencil_add_stroke_shgroup( + cache, strokegrp, ob, gpl, derived_gpf, gps, opacity, tintcolor, false, custonion); + } + } + + /* edit points (only in edit mode and not play animation not render) */ + if ((src_gps) && (!playing) && (!is_render)) { + if (!stl->g_data->shgrps_edit_line) { + stl->g_data->shgrps_edit_line = DRW_shgroup_create(e_data->gpencil_line_sh, psl->edit_pass); + } + if (!stl->g_data->shgrps_edit_point) { + stl->g_data->shgrps_edit_point = DRW_shgroup_create(e_data->gpencil_edit_point_sh, psl->edit_pass); + const float *viewport_size = DRW_viewport_size_get(); + DRW_shgroup_uniform_vec2(stl->g_data->shgrps_edit_point, "Viewport", viewport_size, 1); + } + + gpencil_add_editpoints_shgroup(stl, cache, ts, ob, gpd, gpl, derived_gpf, src_gps); + } + + if (src_gps) { + src_gps = src_gps->next; + } + + cache->cache_idx++; + } +} + + /* draw stroke in drawing buffer */ +void DRW_gpencil_populate_buffer_strokes(GPENCIL_e_data *e_data, void *vedata, ToolSettings *ts, Object *ob) +{ + GPENCIL_PassList *psl = ((GPENCIL_Data *)vedata)->psl; + GPENCIL_StorageList *stl = ((GPENCIL_Data *)vedata)->stl; + Brush *brush = BKE_brush_getactive_gpencil(ts); + bGPdata *gpd = ob->data; + MaterialGPencilStyle *gp_style = NULL; + + float obscale = (ob->size[0] + ob->size[1] + ob->size[2]) / 3.0f; + + /* use the brush material */ + Material *ma = BKE_gpencil_get_material_from_brush(brush); + if (ma != NULL) { + gp_style = ma->gp_style; + } + /* this is not common, but avoid any special situations when brush could be without material */ + if (gp_style == NULL) { + gp_style = BKE_material_gpencil_settings_get(ob, ob->actcol); + } + + /* drawing strokes */ + /* Check if may need to draw the active stroke cache, only if this layer is the active layer + * that is being edited. (Stroke buffer is currently stored in gp-data) + */ + if (ED_gpencil_session_active() && (gpd->runtime.sbuffer_size > 0)) { + if ((gpd->runtime.sbuffer_sflag & GP_STROKE_ERASER) == 0) { + /* It should also be noted that sbuffer contains temporary point types + * i.e. tGPspoints NOT bGPDspoints + */ + short lthick = brush->size * obscale; + /* if only one point, don't need to draw buffer because the user has no time to see it */ + if (gpd->runtime.sbuffer_size > 1) { + if ((gp_style) && (gp_style->mode == GP_STYLE_MODE_LINE)) { + stl->g_data->shgrps_drawing_stroke = DRW_gpencil_shgroup_stroke_create( + e_data, vedata, psl->drawing_pass, e_data->gpencil_stroke_sh, NULL, gpd, gp_style, -1, false); + } + else { + stl->g_data->shgrps_drawing_stroke = DRW_gpencil_shgroup_point_create( + e_data, vedata, psl->drawing_pass, e_data->gpencil_point_sh, NULL, gpd, gp_style, -1, false); + } + + /* use unit matrix because the buffer is in screen space and does not need conversion */ + if (gpd->runtime.mode == GP_STYLE_MODE_LINE) { + stl->g_data->batch_buffer_stroke = DRW_gpencil_get_buffer_stroke_geom( + gpd, stl->storage->unit_matrix, lthick); + } + else { + stl->g_data->batch_buffer_stroke = DRW_gpencil_get_buffer_point_geom( + gpd, stl->storage->unit_matrix, lthick); + } + + DRW_shgroup_call_add( + stl->g_data->shgrps_drawing_stroke, + stl->g_data->batch_buffer_stroke, + stl->storage->unit_matrix); + + if ((gpd->runtime.sbuffer_size >= 3) && (gpd->runtime.sfill[3] > GPENCIL_ALPHA_OPACITY_THRESH) && + ((gpd->runtime.sbuffer_sflag & GP_STROKE_NOFILL) == 0)) + { + /* if not solid, fill is simulated with solid color */ + if (gpd->runtime.bfill_style > 0) { + gpd->runtime.sfill[3] = 0.5f; + } + stl->g_data->shgrps_drawing_fill = DRW_shgroup_create( + e_data->gpencil_drawing_fill_sh, psl->drawing_pass); + stl->g_data->batch_buffer_fill = DRW_gpencil_get_buffer_fill_geom(gpd); + DRW_shgroup_call_add( + stl->g_data->shgrps_drawing_fill, + stl->g_data->batch_buffer_fill, + stl->storage->unit_matrix); + } + } + } + } +} + +/* get alpha factor for onion strokes */ +static void gpencil_get_onion_alpha(float color[4], bGPdata *gpd) +{ +#define MIN_ALPHA_VALUE 0.01f + + /* if fade is disabled, opacity is equal in all frames */ + if ((gpd->onion_flag & GP_ONION_FADE) == 0) { + color[3] = gpd->onion_factor; + } + else { + /* add override opacity factor */ + color[3] += gpd->onion_factor - 0.5f; + } + + CLAMP(color[3], MIN_ALPHA_VALUE, 1.0f); +} + +/* draw onion-skinning for a layer */ +static void gpencil_draw_onionskins( + GpencilBatchCache *cache, GPENCIL_e_data *e_data, void *vedata, + Object *ob, bGPdata *gpd, bGPDlayer *gpl, bGPDframe *gpf) +{ + + const float default_color[3] = { UNPACK3(U.gpencil_new_layer_col) }; + const float alpha = 1.0f; + float color[4]; + int idx; + float fac = 1.0f; + int step = 0; + int mode = 0; + bool colflag = false; + bGPDframe *gpf_loop = NULL; + int last = gpf->framenum; + + colflag = (bool)gpd->onion_flag & GP_ONION_GHOST_PREVCOL; + + + /* ------------------------------- + * 1) Draw Previous Frames First + * ------------------------------- */ + step = gpd->gstep; + mode = gpd->onion_mode; + + if (gpd->onion_flag & GP_ONION_GHOST_PREVCOL) { + copy_v3_v3(color, gpd->gcolor_prev); + } + else { + copy_v3_v3(color, default_color); + } + + idx = 0; + for (bGPDframe *gf = gpf->prev; gf; gf = gf->prev) { + /* only selected frames */ + if ((mode == GP_ONION_MODE_SELECTED) && ((gf->flag & GP_FRAME_SELECT) == 0)) { + continue; + } + /* absolute range */ + if (mode == GP_ONION_MODE_ABSOLUTE) { + if ((gpf->framenum - gf->framenum) > step) { + break; + } + } + /* relative range */ + if (mode == GP_ONION_MODE_RELATIVE) { + idx++; + if (idx > step) { + break; + } + + } + /* alpha decreases with distance from curframe index */ + if (mode != GP_ONION_MODE_SELECTED) { + if (mode == GP_ONION_MODE_ABSOLUTE) { + fac = 1.0f - ((float)(gpf->framenum - gf->framenum) / (float)(step + 1)); + } + else { + fac = 1.0f - ((float)idx / (float)(step + 1)); + } + color[3] = alpha * fac * 0.66f; + } + else { + idx++; + fac = alpha - ((1.1f - (1.0f / (float)idx)) * 0.66f); + color[3] = fac; + } + + /* if loop option, save the frame to use later */ + if ((mode != GP_ONION_MODE_ABSOLUTE) && (gpd->onion_flag & GP_ONION_LOOP)) { + gpf_loop = gf; + } + + gpencil_get_onion_alpha(color, gpd); + gpencil_draw_onion_strokes(cache, e_data, vedata, ob, gpd, gpl, gf, color[3], color, colflag); + } + /* ------------------------------- + * 2) Now draw next frames + * ------------------------------- */ + step = gpd->gstep_next; + mode = gpd->onion_mode; + + if (gpd->onion_flag & GP_ONION_GHOST_NEXTCOL) { + copy_v3_v3(color, gpd->gcolor_next); + } + else { + copy_v3_v3(color, default_color); + } + + idx = 0; + for (bGPDframe *gf = gpf->next; gf; gf = gf->next) { + /* only selected frames */ + if ((mode == GP_ONION_MODE_SELECTED) && ((gf->flag & GP_FRAME_SELECT) == 0)) { + continue; + } + /* absolute range */ + if (mode == GP_ONION_MODE_ABSOLUTE) { + if ((gf->framenum - gpf->framenum) > step) { + break; + } + } + /* relative range */ + if (mode == GP_ONION_MODE_RELATIVE) { + idx++; + if (idx > step) { + break; + } + + } + /* alpha decreases with distance from curframe index */ + if (mode != GP_ONION_MODE_SELECTED) { + if (mode == GP_ONION_MODE_ABSOLUTE) { + fac = 1.0f - ((float)(gf->framenum - gpf->framenum) / (float)(step + 1)); + } + else { + fac = 1.0f - ((float)idx / (float)(step + 1)); + } + color[3] = alpha * fac * 0.66f; + } + else { + idx++; + fac = alpha - ((1.1f - (1.0f / (float)idx)) * 0.66f); + color[3] = fac; + } + + gpencil_get_onion_alpha(color, gpd); + gpencil_draw_onion_strokes(cache, e_data, vedata, ob, gpd, gpl, gf, color[3], color, colflag); + if (last < gf->framenum) { + last = gf->framenum; + } + } + + /* Draw first frame in blue for loop mode */ + if ((gpd->onion_flag & GP_ONION_LOOP) && (gpf_loop != NULL)) { + if ((last == gpf->framenum) || (gpf->next == NULL)) { + gpencil_get_onion_alpha(color, gpd); + gpencil_draw_onion_strokes( + cache, e_data, vedata, ob, gpd, gpl, + gpf_loop, color[3], color, colflag); + } + } +} + +/* populate a datablock for multiedit (no onions, no modifiers) */ +void DRW_gpencil_populate_multiedit(GPENCIL_e_data *e_data, void *vedata, Scene *scene, Object *ob, bGPdata *gpd) +{ + bGPDframe *gpf = NULL; + + GPENCIL_StorageList *stl = ((GPENCIL_Data *)vedata)->stl; + const DRWContextState *draw_ctx = DRW_context_state_get(); + int cfra_eval = (int)DEG_get_ctime(draw_ctx->depsgraph); + GpencilBatchCache *cache = gpencil_batch_cache_get(ob, cfra_eval); + ToolSettings *ts = scene->toolsettings; + cache->cache_idx = 0; + + /* check if playing animation */ + bool playing = (bool)stl->storage->playing; + + /* draw strokes */ + for (bGPDlayer *gpl = gpd->layers.first; gpl; gpl = gpl->next) { + /* don't draw layer if hidden */ + if (gpl->flag & GP_LAYER_HIDE) + continue; + + /* list of frames to draw */ + if (!playing) { + for (gpf = gpl->frames.first; gpf; gpf = gpf->next) { + if ((gpf == gpl->actframe) || (gpf->flag & GP_FRAME_SELECT)) { + gpencil_draw_strokes( + cache, e_data, vedata, ts, ob, gpd, gpl, gpf, gpf, + gpl->opacity, gpl->tintcolor, false); + } + } + } + else { + gpf = BKE_gpencil_layer_getframe(gpl, cfra_eval, 0); + if (gpf) { + gpencil_draw_strokes( + cache, e_data, vedata, ts, ob, gpd, gpl, gpf, gpf, + gpl->opacity, gpl->tintcolor, false); + } + } + + } + + cache->is_dirty = false; +} + +/* helper for populate a complete grease pencil datablock */ +void DRW_gpencil_populate_datablock(GPENCIL_e_data *e_data, void *vedata, Scene *scene, Object *ob, bGPdata *gpd) +{ + GPENCIL_StorageList *stl = ((GPENCIL_Data *)vedata)->stl; + const DRWContextState *draw_ctx = DRW_context_state_get(); + View3D *v3d = draw_ctx->v3d; + int cfra_eval = (int)DEG_get_ctime(draw_ctx->depsgraph); + ToolSettings *ts = scene->toolsettings; + bGPDframe *derived_gpf = NULL; + const bool main_onion = v3d != NULL ? ((v3d->flag3 & V3D_GP_SHOW_ONION_SKIN) == 0) : true; + const bool no_onion = (bool)(gpd->flag & GP_DATA_STROKE_WEIGHTMODE) || main_onion; + const bool overlay = v3d != NULL ? (bool)((v3d->flag2 & V3D_RENDER_OVERRIDE) == 0) : true; + + /* check if playing animation */ + bool playing = (bool)stl->storage->playing; + + GpencilBatchCache *cache = gpencil_batch_cache_get(ob, cfra_eval); + cache->cache_idx = 0; + + /* init general modifiers data */ + if (!stl->storage->simplify_modif) { + if ((cache->is_dirty) && (ob->greasepencil_modifiers.first)) { + BKE_gpencil_lattice_init(ob); + } + } + /* draw normal strokes */ + for (bGPDlayer *gpl = gpd->layers.first; gpl; gpl = gpl->next) { + /* don't draw layer if hidden */ + if (gpl->flag & GP_LAYER_HIDE) + continue; + + bGPDframe *gpf = BKE_gpencil_layer_getframe(gpl, cfra_eval, 0); + if (gpf == NULL) + continue; + + /* create GHash if need */ + if (gpl->runtime.derived_data == NULL) { + gpl->runtime.derived_data = (GHash *)BLI_ghash_str_new(gpl->info); + } + + derived_gpf = BLI_ghash_lookup(gpl->runtime.derived_data, ob->id.name); + if (derived_gpf == NULL) { + cache->is_dirty = true; + } + if (cache->is_dirty) { + if (derived_gpf != NULL) { + /* first clear temp data */ + BKE_gpencil_free_frame_runtime_data(derived_gpf); + BLI_ghash_remove(gpl->runtime.derived_data, ob->id.name, NULL, NULL); + } + /* create new data */ + derived_gpf = BKE_gpencil_frame_duplicate(gpf); + BLI_ghash_insert(gpl->runtime.derived_data, ob->id.name, derived_gpf); + } + + /* draw onion skins */ + if ((gpd->flag & GP_DATA_SHOW_ONIONSKINS) && + (!no_onion) && (overlay) && + (gpl->onion_flag & GP_LAYER_ONIONSKIN) && + ((!playing) || (gpd->onion_flag & GP_ONION_GHOST_ALWAYS))) + { + if ((!stl->storage->is_render) || + ((stl->storage->is_render) && (gpd->onion_flag & GP_ONION_GHOST_ALWAYS))) + { + gpencil_draw_onionskins(cache, e_data, vedata, ob, gpd, gpl, gpf); + } + } + + /* draw normal strokes */ + gpencil_draw_strokes( + cache, e_data, vedata, ts, ob, gpd, gpl, gpf, derived_gpf, + gpl->opacity, gpl->tintcolor, false); + + } + + /* clear any lattice data */ + if ((cache->is_dirty) && (ob->greasepencil_modifiers.first)) { + BKE_gpencil_lattice_clear(ob); + } + + cache->is_dirty = false; +} + +/* Helper for gpencil_instance_modifiers() + * See also MOD_gpencilinstance.c -> bakeModifier() + */ +static void gp_instance_modifier_make_instances(GPENCIL_StorageList *stl, Object *ob, InstanceGpencilModifierData *mmd) +{ + /* reset random */ + mmd->rnd[0] = 1; + + /* Generate instances */ + for (int x = 0; x < mmd->count[0]; x++) { + for (int y = 0; y < mmd->count[1]; y++) { + for (int z = 0; z < mmd->count[2]; z++) { + Object *newob; + + const int elem_idx[3] = {x, y, z}; + float mat[4][4]; + int sh; + + /* original strokes are at index = 0,0,0 */ + if ((x == 0) && (y == 0) && (z == 0)) { + continue; + } + + /* compute transform for instance */ + BKE_gpencil_instance_modifier_instance_tfm(mmd, elem_idx, mat); + + /* add object to cache */ + newob = MEM_dupallocN(ob); + mul_m4_m4m4(newob->obmat, ob->obmat, mat); + + /* apply scale */ + ARRAY_SET_ITEMS(newob->size, mat[0][0], mat[1][1], mat[2][2]); + + /* apply shift */ + sh = x; + if (mmd->lock_axis == GP_LOCKAXIS_Y) { + sh = y; + } + if (mmd->lock_axis == GP_LOCKAXIS_Z) { + sh = z; + } + madd_v3_v3fl(newob->obmat[3], mmd->shift, sh); + + /* add temp object to cache */ + stl->g_data->gp_object_cache = gpencil_object_cache_add( + stl->g_data->gp_object_cache, newob, true, + &stl->g_data->gp_cache_size, &stl->g_data->gp_cache_used); + } + } + } +} + +/* create instances using instance modifiers */ +void gpencil_instance_modifiers(GPENCIL_StorageList *stl, Object *ob) +{ + if ((ob) && (ob->data)) { + bGPdata *gpd = ob->data; + if (GPENCIL_ANY_EDIT_MODE(gpd)) { + return; + } + } + + for (GpencilModifierData *md = ob->greasepencil_modifiers.first; md; md = md->next) { + if (((md->mode & eGpencilModifierMode_Realtime) && (stl->storage->is_render == false)) || + ((md->mode & eGpencilModifierMode_Render) && (stl->storage->is_render == true))) + { + if (md->type == eGpencilModifierType_Instance) { + InstanceGpencilModifierData *mmd = (InstanceGpencilModifierData *)md; + + /* Only add instances if the "Make Objects" flag is set + * FIXME: This is a workaround for z-ordering weirdness when all instances are in the same object + */ + if (mmd->flag & GP_INSTANCE_MAKE_OBJECTS) { + gp_instance_modifier_make_instances(stl, ob, mmd); + } + } + } + } +} |