2 * This program is free software; you can redistribute it and/or
3 * modify it under the terms of the GNU General Public License
4 * as published by the Free Software Foundation; either version 2
5 * of the License, or (at your option) any later version.
7 * This program is distributed in the hope that it will be useful,
8 * but WITHOUT ANY WARRANTY; without even the implied warranty of
9 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
10 * GNU General Public License for more details.
12 * You should have received a copy of the GNU General Public License
13 * along with this program; if not, write to the Free Software Foundation,
14 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
16 * Copyright 2016, Blender Foundation.
19 /** \file \ingroup draw
22 #include "DRW_render.h"
24 /* If builtin shaders are needed */
25 #include "GPU_shader.h"
27 #include "draw_common.h"
29 #include "DNA_mesh_types.h"
30 #include "DNA_view3d_types.h"
32 #include "DEG_depsgraph_query.h"
34 extern char datatoc_gpu_shader_cfg_world_clip_lib_glsl[];
36 extern char datatoc_paint_face_vert_glsl[];
37 extern char datatoc_paint_weight_vert_glsl[];
38 extern char datatoc_paint_weight_frag_glsl[];
39 extern char datatoc_paint_wire_vert_glsl[];
40 extern char datatoc_paint_wire_frag_glsl[];
41 extern char datatoc_paint_vert_frag_glsl[];
42 extern char datatoc_common_globals_lib_glsl[];
44 extern char datatoc_gpu_shader_uniform_color_frag_glsl[];
46 /* *********** LISTS *********** */
48 typedef struct PAINT_WEIGHT_PassList {
49 struct DRWPass *weight_faces;
50 struct DRWPass *wire_overlay;
51 struct DRWPass *face_overlay;
52 struct DRWPass *vert_overlay;
53 } PAINT_WEIGHT_PassList;
55 typedef struct PAINT_WEIGHT_StorageList {
56 struct PAINT_WEIGHT_PrivateData *g_data;
57 } PAINT_WEIGHT_StorageList;
59 typedef struct PAINT_WEIGHT_Data {
61 DRWViewportEmptyList *fbl;
62 DRWViewportEmptyList *txl;
63 PAINT_WEIGHT_PassList *psl;
64 PAINT_WEIGHT_StorageList *stl;
67 typedef struct PAINT_WEIGHT_Shaders {
68 struct GPUShader *weight_face;
69 struct GPUShader *wire_overlay;
70 struct GPUShader *face_overlay;
71 struct GPUShader *vert_overlay;
72 } PAINT_WEIGHT_Shaders;
74 /* *********** STATIC *********** */
77 PAINT_WEIGHT_Shaders sh_data[GPU_SHADER_CFG_LEN];
80 } e_data = {NULL}; /* Engine data */
82 typedef struct PAINT_WEIGHT_PrivateData {
83 DRWShadingGroup *fweights_shgrp;
84 DRWShadingGroup *lwire_shgrp;
85 DRWShadingGroup *face_shgrp;
86 DRWShadingGroup *vert_shgrp;
87 } PAINT_WEIGHT_PrivateData;
89 /* *********** FUNCTIONS *********** */
91 static void PAINT_WEIGHT_engine_init(void *UNUSED(vedata))
93 const DRWContextState *draw_ctx = DRW_context_state_get();
94 PAINT_WEIGHT_Shaders *sh_data = &e_data.sh_data[draw_ctx->sh_cfg];
95 const bool is_clip = (draw_ctx->rv3d->rflag & RV3D_CLIPPING) != 0;
98 DRW_state_clip_planes_set_from_rv3d(draw_ctx->rv3d);
101 if (!sh_data->weight_face) {
102 const char *world_clip_lib_or_empty = is_clip ? datatoc_gpu_shader_cfg_world_clip_lib_glsl : "";
103 const char *world_clip_def_or_empty = is_clip ? "#define USE_WORLD_CLIP_PLANES\n" : "";
105 sh_data->weight_face = GPU_shader_create_from_arrays({
106 .vert = (const char *[]){world_clip_lib_or_empty, datatoc_common_globals_lib_glsl, datatoc_paint_weight_vert_glsl, NULL},
107 .frag = (const char *[]){datatoc_common_globals_lib_glsl, datatoc_paint_weight_frag_glsl, NULL},
108 .defs = (const char *[]){world_clip_def_or_empty, NULL},
111 sh_data->wire_overlay = GPU_shader_create_from_arrays({
112 .vert = (const char *[]){world_clip_lib_or_empty, datatoc_common_globals_lib_glsl, datatoc_paint_wire_vert_glsl, NULL},
113 .frag = (const char *[]){datatoc_paint_wire_frag_glsl, NULL},
114 .defs = (const char *[]){world_clip_def_or_empty, "#define WEIGHT_MODE\n", NULL},
117 sh_data->face_overlay = GPU_shader_create_from_arrays({
118 .vert = (const char *[]){world_clip_lib_or_empty, datatoc_paint_face_vert_glsl, NULL},
119 .frag = (const char *[]){datatoc_gpu_shader_uniform_color_frag_glsl, NULL},
120 .defs = (const char *[]){world_clip_def_or_empty, NULL},
123 sh_data->vert_overlay = GPU_shader_create_from_arrays({
124 .vert = (const char *[]){world_clip_lib_or_empty, datatoc_common_globals_lib_glsl, datatoc_paint_wire_vert_glsl, NULL},
125 .frag = (const char *[]){datatoc_common_globals_lib_glsl, datatoc_paint_vert_frag_glsl, NULL},
126 .defs = (const char *[]){world_clip_def_or_empty, NULL},
131 static void PAINT_WEIGHT_cache_init(void *vedata)
133 PAINT_WEIGHT_PassList *psl = ((PAINT_WEIGHT_Data *)vedata)->psl;
134 PAINT_WEIGHT_StorageList *stl = ((PAINT_WEIGHT_Data *)vedata)->stl;
135 const DRWContextState *draw_ctx = DRW_context_state_get();
136 const View3D *v3d = draw_ctx->v3d;
137 RegionView3D *rv3d = draw_ctx->rv3d;
138 PAINT_WEIGHT_Shaders *sh_data = &e_data.sh_data[draw_ctx->sh_cfg];
141 /* Alloc transient pointers */
142 stl->g_data = MEM_mallocN(sizeof(*stl->g_data), __func__);
147 psl->weight_faces = DRW_pass_create(
149 DRW_STATE_WRITE_COLOR | DRW_STATE_DEPTH_EQUAL | DRW_STATE_MULTIPLY);
151 stl->g_data->fweights_shgrp = DRW_shgroup_create(sh_data->weight_face, psl->weight_faces);
153 DRW_shgroup_uniform_bool_copy(stl->g_data->fweights_shgrp, "drawContours", (v3d->overlay.wpaint_flag & V3D_OVERLAY_WPAINT_CONTOURS) != 0);
155 DRW_shgroup_uniform_float(stl->g_data->fweights_shgrp, "opacity", &v3d->overlay.weight_paint_mode_opacity, 1);
156 DRW_shgroup_uniform_texture(stl->g_data->fweights_shgrp, "colorramp", G_draw.weight_ramp);
157 DRW_shgroup_uniform_block(stl->g_data->fweights_shgrp, "globalsBlock", G_draw.block_ubo);
158 if (rv3d->rflag & RV3D_CLIPPING) {
159 DRW_shgroup_world_clip_planes_from_rv3d(stl->g_data->fweights_shgrp, rv3d);
164 psl->wire_overlay = DRW_pass_create(
166 DRW_STATE_WRITE_COLOR | DRW_STATE_WRITE_DEPTH | DRW_STATE_DEPTH_LESS_EQUAL | DRW_STATE_OFFSET_NEGATIVE);
168 stl->g_data->lwire_shgrp = DRW_shgroup_create(sh_data->wire_overlay, psl->wire_overlay);
169 DRW_shgroup_uniform_block(stl->g_data->lwire_shgrp, "globalsBlock", G_draw.block_ubo);
170 if (rv3d->rflag & RV3D_CLIPPING) {
171 DRW_shgroup_world_clip_planes_from_rv3d(stl->g_data->lwire_shgrp, rv3d);
176 psl->face_overlay = DRW_pass_create(
178 DRW_STATE_WRITE_COLOR | DRW_STATE_WRITE_DEPTH | DRW_STATE_DEPTH_LESS_EQUAL | DRW_STATE_BLEND);
180 stl->g_data->face_shgrp = DRW_shgroup_create(sh_data->face_overlay, psl->face_overlay);
182 static float col[4] = {1.0f, 1.0f, 1.0f, 0.2f};
183 DRW_shgroup_uniform_vec4(stl->g_data->face_shgrp, "color", col, 1);
184 if (rv3d->rflag & RV3D_CLIPPING) {
185 DRW_shgroup_world_clip_planes_from_rv3d(stl->g_data->face_shgrp, rv3d);
190 psl->vert_overlay = DRW_pass_create(
192 DRW_STATE_WRITE_COLOR | DRW_STATE_WRITE_DEPTH | DRW_STATE_DEPTH_LESS_EQUAL | DRW_STATE_OFFSET_NEGATIVE);
194 stl->g_data->vert_shgrp = DRW_shgroup_create(sh_data->vert_overlay, psl->vert_overlay);
195 DRW_shgroup_uniform_block(stl->g_data->vert_shgrp, "globalsBlock", G_draw.block_ubo);
196 if (rv3d->rflag & RV3D_CLIPPING) {
197 DRW_shgroup_world_clip_planes_from_rv3d(stl->g_data->vert_shgrp, rv3d);
202 static void PAINT_WEIGHT_cache_populate(void *vedata, Object *ob)
204 PAINT_WEIGHT_StorageList *stl = ((PAINT_WEIGHT_Data *)vedata)->stl;
205 const DRWContextState *draw_ctx = DRW_context_state_get();
206 const View3D *v3d = draw_ctx->v3d;
208 if ((ob->type == OB_MESH) && (ob == draw_ctx->obact)) {
209 const Mesh *me_orig = DEG_get_original_object(ob)->data;
210 const bool use_wire = (v3d->overlay.paint_flag & V3D_OVERLAY_PAINT_WIRE) != 0;
211 const bool use_surface = v3d->overlay.weight_paint_mode_opacity != 0.0f;
212 const bool use_face_sel = (me_orig->editflag & ME_EDIT_PAINT_FACE_SEL) != 0;
213 const bool use_vert_sel = (me_orig->editflag & ME_EDIT_PAINT_VERT_SEL) != 0;
214 struct GPUBatch *geom;
217 geom = DRW_cache_mesh_surface_weights_get(ob);
218 DRW_shgroup_call_add(stl->g_data->fweights_shgrp, geom, ob->obmat);
221 if (use_face_sel || use_wire) {
222 geom = DRW_cache_mesh_surface_edges_get(ob);
223 DRW_shgroup_call_add(stl->g_data->lwire_shgrp, geom, ob->obmat);
227 geom = DRW_cache_mesh_surface_get(ob);
228 DRW_shgroup_call_add(stl->g_data->face_shgrp, geom, ob->obmat);
232 geom = DRW_cache_mesh_all_verts_get(ob);
233 DRW_shgroup_call_add(stl->g_data->vert_shgrp, geom, ob->obmat);
238 static void PAINT_WEIGHT_draw_scene(void *vedata)
240 PAINT_WEIGHT_PassList *psl = ((PAINT_WEIGHT_Data *)vedata)->psl;
242 DRW_draw_pass(psl->weight_faces);
243 DRW_draw_pass(psl->face_overlay);
244 DRW_draw_pass(psl->wire_overlay);
245 DRW_draw_pass(psl->vert_overlay);
248 static void PAINT_WEIGHT_engine_free(void)
250 for (int sh_data_index = 0; sh_data_index < ARRAY_SIZE(e_data.sh_data); sh_data_index++) {
251 PAINT_WEIGHT_Shaders *sh_data = &e_data.sh_data[sh_data_index];
252 GPUShader **sh_data_as_array = (GPUShader **)sh_data;
253 for (int i = 0; i < (sizeof(PAINT_WEIGHT_Shaders) / sizeof(GPUShader *)); i++) {
254 DRW_SHADER_FREE_SAFE(sh_data_as_array[i]);
259 static const DrawEngineDataSize PAINT_WEIGHT_data_size = DRW_VIEWPORT_DATA_SIZE(PAINT_WEIGHT_Data);
261 DrawEngineType draw_engine_paint_weight_type = {
263 N_("PaintWeightMode"),
264 &PAINT_WEIGHT_data_size,
265 &PAINT_WEIGHT_engine_init,
266 &PAINT_WEIGHT_engine_free,
267 &PAINT_WEIGHT_cache_init,
268 &PAINT_WEIGHT_cache_populate,
271 &PAINT_WEIGHT_draw_scene,