diff options
author | Antonioya <blendergit@gmail.com> | 2018-07-31 11:22:19 +0300 |
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committer | Antonioya <blendergit@gmail.com> | 2018-07-31 11:50:43 +0300 |
commit | 66da2f537ae80ce2b31d1eaf34ad8c03d858938d (patch) | |
tree | 4776b9d2e43e4280d01d6f0b7088e6d4f417db0f /source/blender/draw/engines/gpencil/gpencil_draw_cache_impl.c | |
parent | 27496cc46bbfd76e98ad3b1ccb8fea534763ffb5 (diff) |
New Grease Pencil object for 2D animation
This commit merge the full development done in greasepencil-object branch and include mainly the following features.
- New grease pencil object.
- New drawing engine.
- New grease pencil modes Draw/Sculpt/Edit and Weight Paint.
- New brushes for grease pencil.
- New modifiers for grease pencil.
- New shaders FX.
- New material system (replace old palettes and colors).
- Split of annotations (old grease pencil) and new grease pencil object.
- UI adapted to blender 2.8.
You can get more info here:
https://code.blender.org/2017/12/drawing-2d-animation-in-blender-2-8/
https://code.blender.org/2018/07/grease-pencil-status-update/
This is the result of nearly two years of development and I want thanks firstly the other members of the grease pencil team: Daniel M. Lara, Matias Mendiola and Joshua Leung for their support, ideas and to keep working in the project all the time, without them this project had been impossible.
Also, I want thanks other Blender developers for their help, advices and to be there always to help me, and specially to Clément Foucault, Dalai Felinto, Pablo Vázquez and Campbell Barton.
Diffstat (limited to 'source/blender/draw/engines/gpencil/gpencil_draw_cache_impl.c')
-rw-r--r-- | source/blender/draw/engines/gpencil/gpencil_draw_cache_impl.c | 739 |
1 files changed, 739 insertions, 0 deletions
diff --git a/source/blender/draw/engines/gpencil/gpencil_draw_cache_impl.c b/source/blender/draw/engines/gpencil/gpencil_draw_cache_impl.c new file mode 100644 index 00000000000..dd5db85f3f4 --- /dev/null +++ b/source/blender/draw/engines/gpencil/gpencil_draw_cache_impl.c @@ -0,0 +1,739 @@ +/* + * ***** BEGIN GPL LICENSE BLOCK ***** + * + * 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) 2008, Blender Foundation + * This is a new part of Blender + * + * Contributor(s): Antonio Vazquez + * + * ***** END GPL LICENSE BLOCK ***** + */ + +/** \file draw/engines/gpencil/gpencil_draw_cache_impl.c + * \ingroup draw + */ + +#include "BLI_polyfill_2d.h" +#include "BLI_math_color.h" + +#include "DNA_meshdata_types.h" +#include "DNA_gpencil_types.h" +#include "DNA_screen_types.h" +#include "DNA_view3d_types.h" + +#include "BKE_gpencil.h" +#include "BKE_action.h" + +#include "DRW_render.h" + +#include "GPU_immediate.h" +#include "GPU_draw.h" + +#include "ED_gpencil.h" +#include "ED_view3d.h" + +#include "UI_resources.h" + +#include "gpencil_engine.h" + +/* Helper to add stroke point to vbo */ +static void gpencil_set_stroke_point( + GPUVertBuf *vbo, float matrix[4][4], const bGPDspoint *pt, int idx, + uint pos_id, uint color_id, + uint thickness_id, uint uvdata_id, short thickness, + const float ink[4]) +{ + float viewfpt[3]; + + float alpha = ink[3] * pt->strength; + CLAMP(alpha, GPENCIL_STRENGTH_MIN, 1.0f); + float col[4]; + ARRAY_SET_ITEMS(col, ink[0], ink[1], ink[2], alpha); + + GPU_vertbuf_attr_set(vbo, color_id, idx, col); + + /* transfer both values using the same shader variable */ + float uvdata[2] = { pt->uv_fac, pt->uv_rot }; + GPU_vertbuf_attr_set(vbo, uvdata_id, idx, uvdata); + + /* the thickness of the stroke must be affected by zoom, so a pixel scale is calculated */ + mul_v3_m4v3(viewfpt, matrix, &pt->x); + float thick = max_ff(pt->pressure * thickness, 1.0f); + GPU_vertbuf_attr_set(vbo, thickness_id, idx, &thick); + + GPU_vertbuf_attr_set(vbo, pos_id, idx, &pt->x); +} + +/* Helper to add a new fill point and texture coordinates to vertex buffer */ +static void gpencil_set_fill_point( + GPUVertBuf *vbo, int idx, bGPDspoint *pt, const float fcolor[4], float uv[2], + uint pos_id, uint color_id, uint text_id) +{ + GPU_vertbuf_attr_set(vbo, pos_id, idx, &pt->x); + GPU_vertbuf_attr_set(vbo, color_id, idx, fcolor); + GPU_vertbuf_attr_set(vbo, text_id, idx, uv); +} + +/* create batch geometry data for points stroke shader */ +GPUBatch *DRW_gpencil_get_point_geom(bGPDstroke *gps, short thickness, const float ink[4]) +{ + static GPUVertFormat format = { 0 }; + static uint pos_id, color_id, size_id, uvdata_id; + if (format.attr_len == 0) { + pos_id = GPU_vertformat_attr_add(&format, "pos", GPU_COMP_F32, 3, GPU_FETCH_FLOAT); + color_id = GPU_vertformat_attr_add(&format, "color", GPU_COMP_F32, 4, GPU_FETCH_FLOAT); + size_id = GPU_vertformat_attr_add(&format, "thickness", GPU_COMP_F32, 1, GPU_FETCH_FLOAT); + uvdata_id = GPU_vertformat_attr_add(&format, "uvdata", GPU_COMP_F32, 2, GPU_FETCH_FLOAT); + } + + GPUVertBuf *vbo = GPU_vertbuf_create_with_format(&format); + GPU_vertbuf_data_alloc(vbo, gps->totpoints); + + /* draw stroke curve */ + const bGPDspoint *pt = gps->points; + int idx = 0; + float alpha; + float col[4]; + + for (int i = 0; i < gps->totpoints; i++, pt++) { + /* set point */ + alpha = ink[3] * pt->strength; + CLAMP(alpha, GPENCIL_STRENGTH_MIN, 1.0f); + ARRAY_SET_ITEMS(col, ink[0], ink[1], ink[2], alpha); + + float thick = max_ff(pt->pressure * thickness, 1.0f); + + GPU_vertbuf_attr_set(vbo, color_id, idx, col); + GPU_vertbuf_attr_set(vbo, size_id, idx, &thick); + + /* transfer both values using the same shader variable */ + float uvdata[2] = { pt->uv_fac, pt->uv_rot }; + GPU_vertbuf_attr_set(vbo, uvdata_id, idx, uvdata); + + GPU_vertbuf_attr_set(vbo, pos_id, idx, &pt->x); + idx++; + } + + return GPU_batch_create_ex(GPU_PRIM_POINTS, vbo, NULL, GPU_BATCH_OWNS_VBO); +} + +/* create batch geometry data for stroke shader */ +GPUBatch *DRW_gpencil_get_stroke_geom(bGPDframe *gpf, bGPDstroke *gps, short thickness, const float ink[4]) +{ + bGPDspoint *points = gps->points; + int totpoints = gps->totpoints; + /* if cyclic needs more vertex */ + int cyclic_add = (gps->flag & GP_STROKE_CYCLIC) ? 1 : 0; + + static GPUVertFormat format = { 0 }; + static uint pos_id, color_id, thickness_id, uvdata_id; + if (format.attr_len == 0) { + pos_id = GPU_vertformat_attr_add(&format, "pos", GPU_COMP_F32, 3, GPU_FETCH_FLOAT); + color_id = GPU_vertformat_attr_add(&format, "color", GPU_COMP_F32, 4, GPU_FETCH_FLOAT); + thickness_id = GPU_vertformat_attr_add(&format, "thickness", GPU_COMP_F32, 1, GPU_FETCH_FLOAT); + uvdata_id = GPU_vertformat_attr_add(&format, "uvdata", GPU_COMP_F32, 2, GPU_FETCH_FLOAT); + } + + GPUVertBuf *vbo = GPU_vertbuf_create_with_format(&format); + GPU_vertbuf_data_alloc(vbo, totpoints + cyclic_add + 2); + + /* draw stroke curve */ + const bGPDspoint *pt = points; + int idx = 0; + for (int i = 0; i < totpoints; i++, pt++) { + /* first point for adjacency (not drawn) */ + if (i == 0) { + if (gps->flag & GP_STROKE_CYCLIC && totpoints > 2) { + gpencil_set_stroke_point(vbo, gpf->runtime.viewmatrix, &points[totpoints - 1], idx, + pos_id, color_id, thickness_id, uvdata_id, thickness, ink); + idx++; + } + else { + gpencil_set_stroke_point(vbo, gpf->runtime.viewmatrix, &points[1], idx, + pos_id, color_id, thickness_id, uvdata_id, thickness, ink); + idx++; + } + } + /* set point */ + gpencil_set_stroke_point(vbo, gpf->runtime.viewmatrix, pt, idx, + pos_id, color_id, thickness_id, uvdata_id, thickness, ink); + idx++; + } + + if (gps->flag & GP_STROKE_CYCLIC && totpoints > 2) { + /* draw line to first point to complete the cycle */ + gpencil_set_stroke_point(vbo, gpf->runtime.viewmatrix, &points[0], idx, + pos_id, color_id, thickness_id, uvdata_id, thickness, ink); + idx++; + /* now add adjacency point (not drawn) */ + gpencil_set_stroke_point(vbo, gpf->runtime.viewmatrix, &points[1], idx, + pos_id, color_id, thickness_id, uvdata_id, thickness, ink); + idx++; + } + /* last adjacency point (not drawn) */ + else { + gpencil_set_stroke_point(vbo, gpf->runtime.viewmatrix, &points[totpoints - 2], idx, + pos_id, color_id, thickness_id, uvdata_id, thickness, ink); + } + + return GPU_batch_create_ex(GPU_PRIM_LINE_STRIP_ADJ, vbo, NULL, GPU_BATCH_OWNS_VBO); +} + +/* create batch geometry data for current buffer stroke shader */ +GPUBatch *DRW_gpencil_get_buffer_stroke_geom(bGPdata *gpd, float matrix[4][4], short thickness) +{ + const DRWContextState *draw_ctx = DRW_context_state_get(); + Scene *scene = draw_ctx->scene; + View3D *v3d = draw_ctx->v3d; + ARegion *ar = draw_ctx->ar; + RegionView3D *rv3d = draw_ctx->rv3d; + ToolSettings *ts = scene->toolsettings; + Object *ob = draw_ctx->obact; + + tGPspoint *points = gpd->runtime.sbuffer; + int totpoints = gpd->runtime.sbuffer_size; + + static GPUVertFormat format = { 0 }; + static uint pos_id, color_id, thickness_id, uvdata_id; + if (format.attr_len == 0) { + pos_id = GPU_vertformat_attr_add(&format, "pos", GPU_COMP_F32, 3, GPU_FETCH_FLOAT); + color_id = GPU_vertformat_attr_add(&format, "color", GPU_COMP_F32, 4, GPU_FETCH_FLOAT); + thickness_id = GPU_vertformat_attr_add(&format, "thickness", GPU_COMP_F32, 1, GPU_FETCH_FLOAT); + uvdata_id = GPU_vertformat_attr_add(&format, "uvdata", GPU_COMP_F32, 2, GPU_FETCH_FLOAT); + } + + GPUVertBuf *vbo = GPU_vertbuf_create_with_format(&format); + GPU_vertbuf_data_alloc(vbo, totpoints + 2); + + /* draw stroke curve */ + const tGPspoint *tpt = points; + bGPDspoint pt, pt2; + int idx = 0; + + /* get origin to reproject point */ + float origin[3]; + bGPDlayer *gpl = BKE_gpencil_layer_getactive(gpd); + ED_gp_get_drawing_reference(v3d, scene, ob, gpl, ts->gpencil_v3d_align, origin); + + for (int i = 0; i < totpoints; i++, tpt++) { + ED_gpencil_tpoint_to_point(ar, origin, tpt, &pt); + ED_gp_project_point_to_plane(ob, rv3d, origin, ts->gp_sculpt.lock_axis - 1, &pt); + + /* first point for adjacency (not drawn) */ + if (i == 0) { + if (totpoints > 1) { + ED_gpencil_tpoint_to_point(ar, origin, &points[1], &pt2); + gpencil_set_stroke_point(vbo, matrix, &pt2, idx, + pos_id, color_id, thickness_id, uvdata_id, thickness, gpd->runtime.scolor); + } + else { + gpencil_set_stroke_point(vbo, matrix, &pt, idx, + pos_id, color_id, thickness_id, uvdata_id, thickness, gpd->runtime.scolor); + } + idx++; + } + /* set point */ + gpencil_set_stroke_point(vbo, matrix, &pt, idx, + pos_id, color_id, thickness_id, uvdata_id, thickness, gpd->runtime.scolor); + idx++; + } + + /* last adjacency point (not drawn) */ + if (totpoints > 2) { + ED_gpencil_tpoint_to_point(ar, origin, &points[totpoints - 2], &pt2); + gpencil_set_stroke_point(vbo, matrix, &pt2, idx, + pos_id, color_id, thickness_id, uvdata_id, thickness, gpd->runtime.scolor); + } + else { + gpencil_set_stroke_point(vbo, matrix, &pt, idx, + pos_id, color_id, thickness_id, uvdata_id, thickness, gpd->runtime.scolor); + } + + return GPU_batch_create_ex(GPU_PRIM_LINE_STRIP_ADJ, vbo, NULL, GPU_BATCH_OWNS_VBO); +} + +/* create batch geometry data for current buffer point shader */ +GPUBatch *DRW_gpencil_get_buffer_point_geom(bGPdata *gpd, float matrix[4][4], short thickness) +{ + const DRWContextState *draw_ctx = DRW_context_state_get(); + Scene *scene = draw_ctx->scene; + View3D *v3d = draw_ctx->v3d; + ARegion *ar = draw_ctx->ar; + RegionView3D *rv3d = draw_ctx->rv3d; + ToolSettings *ts = scene->toolsettings; + Object *ob = draw_ctx->obact; + + tGPspoint *points = gpd->runtime.sbuffer; + int totpoints = gpd->runtime.sbuffer_size; + + static GPUVertFormat format = { 0 }; + static uint pos_id, color_id, thickness_id, uvdata_id; + if (format.attr_len == 0) { + pos_id = GPU_vertformat_attr_add(&format, "pos", GPU_COMP_F32, 3, GPU_FETCH_FLOAT); + color_id = GPU_vertformat_attr_add(&format, "color", GPU_COMP_F32, 4, GPU_FETCH_FLOAT); + thickness_id = GPU_vertformat_attr_add(&format, "thickness", GPU_COMP_F32, 1, GPU_FETCH_FLOAT); + uvdata_id = GPU_vertformat_attr_add(&format, "uvdata", GPU_COMP_F32, 2, GPU_FETCH_FLOAT); + } + + GPUVertBuf *vbo = GPU_vertbuf_create_with_format(&format); + GPU_vertbuf_data_alloc(vbo, totpoints); + + /* draw stroke curve */ + const tGPspoint *tpt = points; + bGPDspoint pt; + int idx = 0; + + /* get origin to reproject point */ + float origin[3]; + bGPDlayer *gpl = BKE_gpencil_layer_getactive(gpd); + ED_gp_get_drawing_reference(v3d, scene, ob, gpl, ts->gpencil_v3d_align, origin); + + for (int i = 0; i < totpoints; i++, tpt++) { + ED_gpencil_tpoint_to_point(ar, origin, tpt, &pt); + ED_gp_project_point_to_plane(ob, rv3d, origin, ts->gp_sculpt.lock_axis - 1, &pt); + + /* set point */ + gpencil_set_stroke_point(vbo, matrix, &pt, idx, + pos_id, color_id, thickness_id, uvdata_id, + thickness, gpd->runtime.scolor); + idx++; + } + + return GPU_batch_create_ex(GPU_PRIM_POINTS, vbo, NULL, GPU_BATCH_OWNS_VBO); +} + +/* create batch geometry data for current buffer fill shader */ +GPUBatch *DRW_gpencil_get_buffer_fill_geom(bGPdata *gpd) +{ + if (gpd == NULL) { + return NULL; + } + + const tGPspoint *points = gpd->runtime.sbuffer; + int totpoints = gpd->runtime.sbuffer_size; + if (totpoints < 3) { + return NULL; + } + + const DRWContextState *draw_ctx = DRW_context_state_get(); + Scene *scene = draw_ctx->scene; + View3D *v3d = draw_ctx->v3d; + ARegion *ar = draw_ctx->ar; + ToolSettings *ts = scene->toolsettings; + Object *ob = draw_ctx->obact; + + /* get origin to reproject point */ + float origin[3]; + bGPDlayer *gpl = BKE_gpencil_layer_getactive(gpd); + ED_gp_get_drawing_reference(v3d, scene, ob, gpl, ts->gpencil_v3d_align, origin); + + int tot_triangles = totpoints - 2; + /* allocate memory for temporary areas */ + uint (*tmp_triangles)[3] = MEM_mallocN(sizeof(*tmp_triangles) * tot_triangles, __func__); + float (*points2d)[2] = MEM_mallocN(sizeof(*points2d) * totpoints, __func__); + + /* Convert points to array and triangulate + * Here a cache is not used because while drawing the information changes all the time, so the cache + * would be recalculated constantly, so it is better to do direct calculation for each function call + */ + for (int i = 0; i < totpoints; i++) { + const tGPspoint *pt = &points[i]; + points2d[i][0] = pt->x; + points2d[i][1] = pt->y; + } + BLI_polyfill_calc(points2d, (uint)totpoints, 0, tmp_triangles); + + static GPUVertFormat format = { 0 }; + static uint pos_id, color_id; + if (format.attr_len == 0) { + pos_id = GPU_vertformat_attr_add(&format, "pos", GPU_COMP_F32, 3, GPU_FETCH_FLOAT); + color_id = GPU_vertformat_attr_add(&format, "color", GPU_COMP_F32, 4, GPU_FETCH_FLOAT); + } + + GPUVertBuf *vbo = GPU_vertbuf_create_with_format(&format); + + /* draw triangulation data */ + if (tot_triangles > 0) { + GPU_vertbuf_data_alloc(vbo, tot_triangles * 3); + + const tGPspoint *tpt; + bGPDspoint pt; + + int idx = 0; + for (int i = 0; i < tot_triangles; i++) { + for (int j = 0; j < 3; j++) { + tpt = &points[tmp_triangles[i][j]]; + ED_gpencil_tpoint_to_point(ar, origin, tpt, &pt); + GPU_vertbuf_attr_set(vbo, pos_id, idx, &pt.x); + GPU_vertbuf_attr_set(vbo, color_id, idx, gpd->runtime.sfill); + idx++; + } + } + } + + /* clear memory */ + if (tmp_triangles) { + MEM_freeN(tmp_triangles); + } + if (points2d) { + MEM_freeN(points2d); + } + + return GPU_batch_create_ex(GPU_PRIM_TRIS, vbo, NULL, GPU_BATCH_OWNS_VBO); +} + +/* create batch geometry data for stroke shader */ +GPUBatch *DRW_gpencil_get_fill_geom(Object *ob, bGPDstroke *gps, const float color[4]) +{ + BLI_assert(gps->totpoints >= 3); + + /* Calculate triangles cache for filling area (must be done only after changes) */ + if ((gps->flag & GP_STROKE_RECALC_CACHES) || (gps->tot_triangles == 0) || (gps->triangles == NULL)) { + DRW_gpencil_triangulate_stroke_fill(gps); + ED_gpencil_calc_stroke_uv(ob, gps); + } + + BLI_assert(gps->tot_triangles >= 1); + + static GPUVertFormat format = { 0 }; + static uint pos_id, color_id, text_id; + if (format.attr_len == 0) { + pos_id = GPU_vertformat_attr_add(&format, "pos", GPU_COMP_F32, 3, GPU_FETCH_FLOAT); + color_id = GPU_vertformat_attr_add(&format, "color", GPU_COMP_F32, 4, GPU_FETCH_FLOAT); + text_id = GPU_vertformat_attr_add(&format, "texCoord", GPU_COMP_F32, 2, GPU_FETCH_FLOAT); + } + + GPUVertBuf *vbo = GPU_vertbuf_create_with_format(&format); + GPU_vertbuf_data_alloc(vbo, gps->tot_triangles * 3); + + /* Draw all triangles for filling the polygon (cache must be calculated before) */ + bGPDtriangle *stroke_triangle = gps->triangles; + int idx = 0; + for (int i = 0; i < gps->tot_triangles; i++, stroke_triangle++) { + for (int j = 0; j < 3; j++) { + gpencil_set_fill_point( + vbo, idx, &gps->points[stroke_triangle->verts[j]], color, stroke_triangle->uv[j], + pos_id, color_id, text_id); + idx++; + } + } + + return GPU_batch_create_ex(GPU_PRIM_TRIS, vbo, NULL, GPU_BATCH_OWNS_VBO); +} + +/* Draw selected verts for strokes being edited */ +GPUBatch *DRW_gpencil_get_edit_geom(bGPDstroke *gps, float alpha, short dflag) +{ + const DRWContextState *draw_ctx = DRW_context_state_get(); + Object *ob = draw_ctx->obact; + bGPdata *gpd = ob->data; + bool is_weight_paint = (gpd) && (gpd->flag & GP_DATA_STROKE_WEIGHTMODE); + + int vgindex = ob->actdef - 1; + if (!BLI_findlink(&ob->defbase, vgindex)) { + vgindex = -1; + } + + /* Get size of verts: + * - The selected state needs to be larger than the unselected state so that + * they stand out more. + * - We use the theme setting for size of the unselected verts + */ + float bsize = UI_GetThemeValuef(TH_GP_VERTEX_SIZE); + float vsize; + if ((int)bsize > 8) { + vsize = 10.0f; + bsize = 8.0f; + } + else { + vsize = bsize + 2; + } + + /* for now, we assume that the base color of the points is not too close to the real color */ + float selectColor[4]; + UI_GetThemeColor3fv(TH_GP_VERTEX_SELECT, selectColor); + selectColor[3] = alpha; + + static GPUVertFormat format = { 0 }; + static uint pos_id, color_id, size_id; + if (format.attr_len == 0) { + pos_id = GPU_vertformat_attr_add(&format, "pos", GPU_COMP_F32, 3, GPU_FETCH_FLOAT); + color_id = GPU_vertformat_attr_add(&format, "color", GPU_COMP_F32, 4, GPU_FETCH_FLOAT); + size_id = GPU_vertformat_attr_add(&format, "size", GPU_COMP_F32, 1, GPU_FETCH_FLOAT); + } + + GPUVertBuf *vbo = GPU_vertbuf_create_with_format(&format); + GPU_vertbuf_data_alloc(vbo, gps->totpoints); + + /* Draw start and end point differently if enabled stroke direction hint */ + bool show_direction_hint = (dflag & GP_DATA_SHOW_DIRECTION) && (gps->totpoints > 1); + + /* Draw all the stroke points (selected or not) */ + bGPDspoint *pt = gps->points; + MDeformVert *dvert = gps->dvert; + + int idx = 0; + float fcolor[4]; + float fsize = 0; + for (int i = 0; i < gps->totpoints; i++, pt++, dvert++) { + /* weight paint */ + if (is_weight_paint) { + float weight = BKE_gpencil_vgroup_use_index(dvert, vgindex); + CLAMP(weight, 0.0f, 1.0f); + float hue = 2.0f * (1.0f - weight) / 3.0f; + hsv_to_rgb(hue, 1.0f, 1.0f, &selectColor[0], &selectColor[1], &selectColor[2]); + selectColor[3] = 1.0f; + copy_v4_v4(fcolor, selectColor); + fsize = vsize; + } + else { + if (show_direction_hint && i == 0) { + /* start point in green bigger */ + ARRAY_SET_ITEMS(fcolor, 0.0f, 1.0f, 0.0f, 1.0f); + fsize = vsize + 4; + } + else if (show_direction_hint && (i == gps->totpoints - 1)) { + /* end point in red smaller */ + ARRAY_SET_ITEMS(fcolor, 1.0f, 0.0f, 0.0f, 1.0f); + fsize = vsize + 1; + } + else if (pt->flag & GP_SPOINT_SELECT) { + copy_v4_v4(fcolor, selectColor); + fsize = vsize; + } + else { + copy_v4_v4(fcolor, gps->runtime.tmp_stroke_rgba); + fsize = bsize; + } + } + + GPU_vertbuf_attr_set(vbo, color_id, idx, fcolor); + GPU_vertbuf_attr_set(vbo, size_id, idx, &fsize); + GPU_vertbuf_attr_set(vbo, pos_id, idx, &pt->x); + idx++; + } + + return GPU_batch_create_ex(GPU_PRIM_POINTS, vbo, NULL, GPU_BATCH_OWNS_VBO); +} + +/* Draw lines for strokes being edited */ +GPUBatch *DRW_gpencil_get_edlin_geom(bGPDstroke *gps, float alpha, short UNUSED(dflag)) +{ + const DRWContextState *draw_ctx = DRW_context_state_get(); + Object *ob = draw_ctx->obact; + bGPdata *gpd = ob->data; + bool is_weight_paint = (gpd) && (gpd->flag & GP_DATA_STROKE_WEIGHTMODE); + + int vgindex = ob->actdef - 1; + if (!BLI_findlink(&ob->defbase, vgindex)) { + vgindex = -1; + } + + float selectColor[4]; + UI_GetThemeColor3fv(TH_GP_VERTEX_SELECT, selectColor); + selectColor[3] = alpha; + float linecolor[4]; + copy_v4_v4(linecolor, gpd->line_color); + + static GPUVertFormat format = { 0 }; + static uint pos_id, color_id; + if (format.attr_len == 0) { + pos_id = GPU_vertformat_attr_add(&format, "pos", GPU_COMP_F32, 3, GPU_FETCH_FLOAT); + color_id = GPU_vertformat_attr_add(&format, "color", GPU_COMP_F32, 4, GPU_FETCH_FLOAT); + } + + GPUVertBuf *vbo = GPU_vertbuf_create_with_format(&format); + GPU_vertbuf_data_alloc(vbo, gps->totpoints); + + /* Draw all the stroke lines (selected or not) */ + bGPDspoint *pt = gps->points; + + /* GPXX: for some converted files, this struct could be null + * maybe we can remove this and move to versioning code after + * merge */ + if (gps->dvert == NULL) { + gps->dvert = MEM_callocN(sizeof(MDeformVert) * gps->totpoints, "gp_stroke_weights"); + } + + MDeformVert *dvert = gps->dvert; + + int idx = 0; + float fcolor[4]; + for (int i = 0; i < gps->totpoints; i++, pt++, dvert++) { + /* weight paint */ + if (is_weight_paint) { + float weight = BKE_gpencil_vgroup_use_index(dvert, vgindex); + CLAMP(weight, 0.0f, 1.0f); + float hue = 2.0f * (1.0f - weight) / 3.0f; + hsv_to_rgb(hue, 1.0f, 1.0f, &selectColor[0], &selectColor[1], &selectColor[2]); + selectColor[3] = 1.0f; + copy_v4_v4(fcolor, selectColor); + } + else { + if (pt->flag & GP_SPOINT_SELECT) { + copy_v4_v4(fcolor, selectColor); + } + else { + copy_v4_v4(fcolor, linecolor); + } + } + + GPU_vertbuf_attr_set(vbo, color_id, idx, fcolor); + GPU_vertbuf_attr_set(vbo, pos_id, idx, &pt->x); + idx++; + } + + return GPU_batch_create_ex(GPU_PRIM_LINE_STRIP, vbo, NULL, GPU_BATCH_OWNS_VBO); +} + +static void set_grid_point(GPUVertBuf *vbo, int idx, float col_grid[4], + uint pos_id, uint color_id, + float v1, float v2, int axis) +{ + GPU_vertbuf_attr_set(vbo, color_id, idx, col_grid); + + float pos[3]; + /* Set the grid in the selected axis (default is always Y axis) */ + if (axis & V3D_GP_GRID_AXIS_X) { + pos[0] = 0.0f; + pos[1] = v1; + pos[2] = v2; + } + else if (axis & V3D_GP_GRID_AXIS_Z) { + pos[0] = v1; + pos[1] = v2; + pos[2] = 0.0f; + } + else + { + pos[0] = v1; + pos[1] = 0.0f; + pos[2] = v2; + } + + + + GPU_vertbuf_attr_set(vbo, pos_id, idx, pos); +} + +/* Draw grid lines */ +GPUBatch *DRW_gpencil_get_grid(void) +{ + const DRWContextState *draw_ctx = DRW_context_state_get(); + Scene *scene = draw_ctx->scene; + ToolSettings *ts = scene->toolsettings; + View3D *v3d = draw_ctx->v3d; + + float col_grid[4]; + + /* verify we have something to draw and valid values */ + if (v3d->overlay.gpencil_grid_lines < 1) { + v3d->overlay.gpencil_grid_lines = GP_DEFAULT_GRID_LINES; + } + + if (v3d->overlay.gpencil_grid_scale == 0.0f) { + v3d->overlay.gpencil_grid_scale = 1.0f; + } + + if (v3d->overlay.gpencil_grid_opacity < 0.1f) { + v3d->overlay.gpencil_grid_opacity = 0.1f; + } + + UI_GetThemeColor3fv(TH_GRID, col_grid); + col_grid[3] = v3d->overlay.gpencil_grid_opacity; + + /* if use locked axis, copy value */ + int axis = v3d->overlay.gpencil_grid_axis; + if ((v3d->overlay.gpencil_grid_axis & V3D_GP_GRID_AXIS_LOCK) == 0) { + + axis = v3d->overlay.gpencil_grid_axis; + } + else { + switch (ts->gp_sculpt.lock_axis) { + case GP_LOCKAXIS_X: + { + axis = V3D_GP_GRID_AXIS_X; + break; + } + case GP_LOCKAXIS_NONE: + case GP_LOCKAXIS_Y: + { + axis = V3D_GP_GRID_AXIS_Y; + break; + } + case GP_LOCKAXIS_Z: + { + axis = V3D_GP_GRID_AXIS_Z; + break; + } + } + } + + const char *grid_unit = NULL; + const int gridlines = v3d->overlay.gpencil_grid_lines; + const float grid_scale = v3d->overlay.gpencil_grid_scale * ED_scene_grid_scale(scene, &grid_unit); + const float grid = grid_scale; + const float space = (grid_scale / gridlines); + + const uint vertex_len = 2 * (gridlines * 4 + 2); + + static GPUVertFormat format = { 0 }; + static uint pos_id, color_id; + if (format.attr_len == 0) { + pos_id = GPU_vertformat_attr_add(&format, "pos", GPU_COMP_F32, 3, GPU_FETCH_FLOAT); + color_id = GPU_vertformat_attr_add(&format, "color", GPU_COMP_F32, 4, GPU_FETCH_FLOAT); + } + + GPUVertBuf *vbo = GPU_vertbuf_create_with_format(&format); + GPU_vertbuf_data_alloc(vbo, vertex_len); + + int idx = 0; + + for (int a = 1; a <= gridlines; a++) { + const float line = a * space; + + set_grid_point(vbo, idx, col_grid, pos_id, color_id, -grid, -line, axis); + idx++; + set_grid_point(vbo, idx, col_grid, pos_id, color_id, +grid, -line, axis); + idx++; + set_grid_point(vbo, idx, col_grid, pos_id, color_id, -grid, +line, axis); + idx++; + set_grid_point(vbo, idx, col_grid, pos_id, color_id, +grid, +line, axis); + idx++; + + set_grid_point(vbo, idx, col_grid, pos_id, color_id, -line, -grid, axis); + idx++; + set_grid_point(vbo, idx, col_grid, pos_id, color_id, -line, +grid, axis); + idx++; + set_grid_point(vbo, idx, col_grid, pos_id, color_id, +line, -grid, axis); + idx++; + set_grid_point(vbo, idx, col_grid, pos_id, color_id, +line, +grid, axis); + idx++; + } + /* center lines */ + set_grid_point(vbo, idx, col_grid, pos_id, color_id, -grid, 0.0f, axis); + idx++; + set_grid_point(vbo, idx, col_grid, pos_id, color_id, +grid, 0.0f, axis); + idx++; + + set_grid_point(vbo, idx, col_grid, pos_id, color_id, 0.0f, -grid, axis); + idx++; + set_grid_point(vbo, idx, col_grid, pos_id, color_id, 0.0f, +grid, axis); + idx++; + + return GPU_batch_create_ex(GPU_PRIM_LINES, vbo, NULL, GPU_BATCH_OWNS_VBO); +} |