1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
|
/*
* Copyright 2016, 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): Blender Institute
*
*/
/** \file blender/draw/modes/edit_lattice_mode.c
* \ingroup draw
*/
#include "DRW_engine.h"
#include "DRW_render.h"
/* If builtin shaders are needed */
#include "GPU_shader.h"
#include "draw_common.h"
#include "draw_mode_engines.h"
/* If needed, contains all global/Theme colors
* Add needed theme colors / values to DRW_globals_update() and update UBO
* Not needed for constant color. */
extern struct GPUUniformBuffer *globals_ubo; /* draw_common.c */
extern struct GlobalsUboStorage ts; /* draw_common.c */
extern char datatoc_common_globals_lib_glsl[];
extern char datatoc_edit_lattice_overlay_loosevert_vert_glsl[];
extern char datatoc_edit_lattice_overlay_frag_glsl[];
extern char datatoc_gpu_shader_3D_vert_glsl[];
extern char datatoc_gpu_shader_uniform_color_frag_glsl[];
extern char datatoc_gpu_shader_point_uniform_color_frag_glsl[];
/* *********** LISTS *********** */
/* All lists are per viewport specific datas.
* They are all free when viewport changes engines
* or is free itself. Use EDIT_LATTICE_engine_init() to
* initialize most of them and EDIT_LATTICE_cache_init()
* for EDIT_LATTICE_PassList */
typedef struct EDIT_LATTICE_PassList {
/* Declare all passes here and init them in
* EDIT_LATTICE_cache_init().
* Only contains (DRWPass *) */
struct DRWPass *wire_pass;
struct DRWPass *vert_pass;
} EDIT_LATTICE_PassList;
typedef struct EDIT_LATTICE_FramebufferList {
/* Contains all framebuffer objects needed by this engine.
* Only contains (GPUFrameBuffer *) */
struct GPUFrameBuffer *fb;
} EDIT_LATTICE_FramebufferList;
typedef struct EDIT_LATTICE_TextureList {
/* Contains all framebuffer textures / utility textures
* needed by this engine. Only viewport specific textures
* (not per object). Only contains (GPUTexture *) */
struct GPUTexture *texture;
} EDIT_LATTICE_TextureList;
typedef struct EDIT_LATTICE_StorageList {
/* Contains any other memory block that the engine needs.
* Only directly MEM_(m/c)allocN'ed blocks because they are
* free with MEM_freeN() when viewport is freed.
* (not per object) */
struct CustomStruct *block;
struct EDIT_LATTICE_PrivateData *g_data;
} EDIT_LATTICE_StorageList;
typedef struct EDIT_LATTICE_Data {
/* Struct returned by DRW_viewport_engine_data_ensure.
* If you don't use one of these, just make it a (void *) */
// void *fbl;
void *engine_type; /* Required */
EDIT_LATTICE_FramebufferList *fbl;
EDIT_LATTICE_TextureList *txl;
EDIT_LATTICE_PassList *psl;
EDIT_LATTICE_StorageList *stl;
} EDIT_LATTICE_Data;
/* *********** STATIC *********** */
static struct {
/* Custom shaders :
* Add sources to source/blender/draw/modes/shaders
* init in EDIT_LATTICE_engine_init();
* free in EDIT_LATTICE_engine_free(); */
GPUShader *wire_sh;
GPUShader *overlay_vert_sh;
} e_data = {NULL}; /* Engine data */
typedef struct EDIT_LATTICE_PrivateData {
/* This keeps the references of the shading groups for
* easy access in EDIT_LATTICE_cache_populate() */
DRWShadingGroup *wire_shgrp;
DRWShadingGroup *vert_shgrp;
} EDIT_LATTICE_PrivateData; /* Transient data */
/* *********** FUNCTIONS *********** */
/* Init Textures, Framebuffers, Storage and Shaders.
* It is called for every frames.
* (Optional) */
static void EDIT_LATTICE_engine_init(void *vedata)
{
EDIT_LATTICE_TextureList *txl = ((EDIT_LATTICE_Data *)vedata)->txl;
EDIT_LATTICE_FramebufferList *fbl = ((EDIT_LATTICE_Data *)vedata)->fbl;
EDIT_LATTICE_StorageList *stl = ((EDIT_LATTICE_Data *)vedata)->stl;
UNUSED_VARS(txl, fbl, stl);
/* Init Framebuffers like this: order is attachment order (for color texs) */
/*
* DRWFboTexture tex[2] = {{&txl->depth, DRW_TEX_DEPTH_24, 0},
* {&txl->color, DRW_TEX_RGBA_8, DRW_TEX_FILTER}};
*/
/* DRW_framebuffer_init takes care of checking if
* the framebuffer is valid and has the right size*/
/*
* float *viewport_size = DRW_viewport_size_get();
* DRW_framebuffer_init(&fbl->occlude_wire_fb,
* (int)viewport_size[0], (int)viewport_size[1],
* tex, 2);
*/
if (!e_data.wire_sh) {
e_data.wire_sh = GPU_shader_get_builtin_shader(GPU_SHADER_3D_SMOOTH_COLOR);
}
if (!e_data.overlay_vert_sh) {
e_data.overlay_vert_sh = DRW_shader_create_with_lib(
datatoc_edit_lattice_overlay_loosevert_vert_glsl, NULL,
datatoc_edit_lattice_overlay_frag_glsl,
datatoc_common_globals_lib_glsl, NULL);
}
}
/* Here init all passes and shading groups
* Assume that all Passes are NULL */
static void EDIT_LATTICE_cache_init(void *vedata)
{
EDIT_LATTICE_PassList *psl = ((EDIT_LATTICE_Data *)vedata)->psl;
EDIT_LATTICE_StorageList *stl = ((EDIT_LATTICE_Data *)vedata)->stl;
if (!stl->g_data) {
/* Alloc transient pointers */
stl->g_data = MEM_mallocN(sizeof(*stl->g_data), __func__);
}
{
psl->wire_pass = DRW_pass_create(
"Lattice Wire",
DRW_STATE_WRITE_COLOR | DRW_STATE_WRITE_DEPTH | DRW_STATE_DEPTH_LESS | DRW_STATE_WIRE);
stl->g_data->wire_shgrp = DRW_shgroup_create(e_data.wire_sh, psl->wire_pass);
psl->vert_pass = DRW_pass_create(
"Lattice Verts",
DRW_STATE_WRITE_COLOR | DRW_STATE_WRITE_DEPTH | DRW_STATE_POINT);
stl->g_data->vert_shgrp = DRW_shgroup_create(e_data.overlay_vert_sh, psl->vert_pass);
DRW_shgroup_uniform_block(stl->g_data->vert_shgrp, "globalsBlock", globals_ubo);
}
}
/* Add geometry to shadingGroups. Execute for each objects */
static void EDIT_LATTICE_cache_populate(void *vedata, Object *ob)
{
EDIT_LATTICE_PassList *psl = ((EDIT_LATTICE_Data *)vedata)->psl;
EDIT_LATTICE_StorageList *stl = ((EDIT_LATTICE_Data *)vedata)->stl;
const DRWContextState *draw_ctx = DRW_context_state_get();
Scene *scene = draw_ctx->scene;
Object *obedit = scene->obedit;
UNUSED_VARS(psl);
if (ob->type == OB_LATTICE) {
if (ob == obedit) {
/* Get geometry cache */
struct Gwn_Batch *geom;
geom = DRW_cache_lattice_wire_get(ob, true);
DRW_shgroup_call_add(stl->g_data->wire_shgrp, geom, ob->obmat);
geom = DRW_cache_lattice_vert_overlay_get(ob);
DRW_shgroup_call_add(stl->g_data->vert_shgrp, geom, ob->obmat);
}
}
}
/* Optional: Post-cache_populate callback */
static void EDIT_LATTICE_cache_finish(void *vedata)
{
EDIT_LATTICE_PassList *psl = ((EDIT_LATTICE_Data *)vedata)->psl;
EDIT_LATTICE_StorageList *stl = ((EDIT_LATTICE_Data *)vedata)->stl;
/* Do something here! dependant on the objects gathered */
UNUSED_VARS(psl, stl);
}
/* Draw time ! Control rendering pipeline from here */
static void EDIT_LATTICE_draw_scene(void *vedata)
{
EDIT_LATTICE_PassList *psl = ((EDIT_LATTICE_Data *)vedata)->psl;
EDIT_LATTICE_FramebufferList *fbl = ((EDIT_LATTICE_Data *)vedata)->fbl;
/* Default framebuffer and texture */
DefaultFramebufferList *dfbl = DRW_viewport_framebuffer_list_get();
DefaultTextureList *dtxl = DRW_viewport_texture_list_get();
UNUSED_VARS(fbl, dtxl);
MULTISAMPLE_SYNC_ENABLE(dfbl)
/* Show / hide entire passes, swap framebuffers ... whatever you fancy */
/*
* DRW_framebuffer_texture_detach(dtxl->depth);
* DRW_framebuffer_bind(fbl->custom_fb);
* DRW_draw_pass(psl->pass);
* DRW_framebuffer_texture_attach(dfbl->default_fb, dtxl->depth, 0, 0);
* DRW_framebuffer_bind(dfbl->default_fb);
*/
/* ... or just render passes on default framebuffer. */
DRW_draw_pass(psl->wire_pass);
DRW_draw_pass(psl->vert_pass);
MULTISAMPLE_SYNC_DISABLE(dfbl)
/* If you changed framebuffer, double check you rebind
* the default one with its textures attached before finishing */
}
/* Cleanup when destroying the engine.
* This is not per viewport ! only when quitting blender.
* Mostly used for freeing shaders */
static void EDIT_LATTICE_engine_free(void)
{
// Currently built-in, dont free
DRW_SHADER_FREE_SAFE(e_data.overlay_vert_sh);
}
/* Create collection settings here.
*
* Be sure to add this function there :
* source/blender/draw/DRW_engine.h
* source/blender/blenkernel/intern/layer.c
* source/blenderplayer/bad_level_call_stubs/stubs.c
*
* And relevant collection settings to :
* source/blender/makesrna/intern/rna_scene.c
* source/blender/blenkernel/intern/layer.c
*/
#if 0
void EDIT_LATTICE_collection_settings_create(CollectionEngineSettings *ces)
{
BLI_assert(ces);
// BKE_collection_engine_property_add_int(ces, "my_bool_prop", false);
// BKE_collection_engine_property_add_int(ces, "my_int_prop", 0);
// BKE_collection_engine_property_add_float(ces, "my_float_prop", 0.0f);
}
#endif
static const DrawEngineDataSize EDIT_LATTICE_data_size = DRW_VIEWPORT_DATA_SIZE(EDIT_LATTICE_Data);
DrawEngineType draw_engine_edit_lattice_type = {
NULL, NULL,
N_("EditLatticeMode"),
&EDIT_LATTICE_data_size,
&EDIT_LATTICE_engine_init,
&EDIT_LATTICE_engine_free,
&EDIT_LATTICE_cache_init,
&EDIT_LATTICE_cache_populate,
&EDIT_LATTICE_cache_finish,
NULL, /* draw_background but not needed by mode engines */
&EDIT_LATTICE_draw_scene,
NULL,
};
|