GCC Code Coverage Report

Directory: ./
File: lib/geogram_gfx/mesh/mesh_gfx.cpp
Date: 2026-09-07 02:37:58
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1 /*
2 * Copyright (c) 2000-2022 Inria
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 *
8 * * Redistributions of source code must retain the above copyright notice,
9 * this list of conditions and the following disclaimer.
10 * * Redistributions in binary form must reproduce the above copyright notice,
11 * this list of conditions and the following disclaimer in the documentation
12 * and/or other materials provided with the distribution.
13 * * Neither the name of the ALICE Project-Team nor the names of its
14 * contributors may be used to endorse or promote products derived from this
15 * software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
18 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
21 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
22 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
23 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
24 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
25 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
26 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
27 * POSSIBILITY OF SUCH DAMAGE.
28 *
29 * Contact: Bruno Levy
30 *
31 * https://www.inria.fr/fr/bruno-levy
32 *
33 * Inria,
34 * Domaine de Voluceau,
35 * 78150 Le Chesnay - Rocquencourt
36 * FRANCE
37 *
38 */
39
40 #include <geogram_gfx/mesh/mesh_gfx.h>
41 #include <geogram_gfx/GLUP/GLUP_private.h>
42 #include <geogram_gfx/basic/GLSL.h>
43
44 #include <geogram/basic/logger.h>
45 #include <geogram/basic/command_line.h>
46
47
48 // TODO: implement attribute display for cell facets.
49 // TODO: use vertex arrays for attribute display for
50 // vertex attributes whenever possible.
51
52 namespace GEO {
53
54 ✗ MeshGfx::MeshGfx() {
55 ✗ show_mesh_ = true;
56 ✗ mesh_width_ = 1;
57 ✗ mesh_border_width_ = 2;
58 ✗ shrink_ = 0.0;
59 ✗ animate_ = false;
60 ✗ time_ = 0.0;
61 ✗ draw_cells_[MESH_TET] = true;
62 ✗ draw_cells_[MESH_HEX] = true;
63 ✗ draw_cells_[MESH_PRISM] = true;
64 ✗ draw_cells_[MESH_PYRAMID] = true;
65 ✗ draw_cells_[MESH_CONNECTOR] = true;
66 ✗ points_size_ = 1.0f;
67 ✗ set_points_color(0.0f, 1.0f, 0.0f);
68 ✗ set_mesh_color(0.0f, 0.0f, 0.0f);
69 ✗ set_surface_color(0.0f, 0.5f, 1.0f);
70 ✗ set_backface_surface_color(1.0f, 0.0f, 0.0f);
71 ✗ set_cells_color(0.9f, 0.9f, 0.9f);
72 ✗ cells_colors_by_type_ = false;
73 ✗ lighting_ = true;
74 ✗ picking_mode_ = MESH_NONE;
75 ✗ object_picking_id_ = NO_INDEX;
76 ✗ mesh_ = nullptr;
77 ✗ triangles_and_quads_ = true;
78 ✗ quads_ = true;
79 ✗ for(index_t type=0; type<MESH_NB_CELL_TYPES; ++type) {
80 ✗ has_cells_[type] = false;
81 }
82
83 ✗ buffer_objects_dirty_ = false;
84 ✗ attributes_buffer_objects_dirty_ = false;
85 ✗ long_vector_attribute_ = false;
86
87 ✗ vertices_VAO_ = 0;
88 ✗ edges_VAO_ = 0;
89 ✗ facets_VAO_ = 0;
90 ✗ cells_VAO_ = 0;
91
92 ✗ vertices_VBO_ = 0;
93 ✗ edge_indices_VBO_ = 0;
94 ✗ facet_indices_VBO_ = 0;
95 ✗ cell_indices_VBO_ = 0;
96 ✗ vertices_attribute_VBO_ = 0;
97
98 ✗ do_animation_ = false;
99
100 ✗ attribute_subelements_ = MESH_NONE;
101 ✗ attribute_min_ = 0.0;
102 ✗ attribute_max_ = 0.0;
103 ✗ attribute_texture_ = 0;
104 ✗ attribute_repeat_ = 1;
105 ✗ attribute_dim_ = 1;
106
107 ✗ ES_profile_ = false;
108 ✗ }
109
110 ✗ void MeshGfx::cleanup() {
111 ✗ if(vertices_VAO_ != 0) {
112 ✗ glupDeleteVertexArrays(1,&vertices_VAO_);
113 ✗ vertices_VAO_ = 0;
114 }
115
116 ✗ if(edges_VAO_ != 0) {
117 ✗ glupDeleteVertexArrays(1,&edges_VAO_);
118 ✗ edges_VAO_ = 0;
119 }
120
121 ✗ if(facets_VAO_ != 0) {
122 ✗ glupDeleteVertexArrays(1,&facets_VAO_);
123 ✗ facets_VAO_ = 0;
124 }
125
126 ✗ if(cells_VAO_ != 0) {
127 ✗ glupDeleteVertexArrays(1,&cells_VAO_);
128 ✗ cells_VAO_ = 0;
129 }
130
131 ✗ if(vertices_VBO_ != 0) {
132 ✗ glDeleteBuffers(1,&vertices_VBO_);
133 ✗ vertices_VBO_ = 0;
134 }
135
136 ✗ if(edge_indices_VBO_ != 0) {
137 ✗ glDeleteBuffers(1,&edge_indices_VBO_);
138 ✗ edge_indices_VBO_ = 0;
139 }
140
141 ✗ if(facet_indices_VBO_ != 0) {
142 ✗ glDeleteBuffers(1,&facet_indices_VBO_);
143 ✗ facet_indices_VBO_ = 0;
144 }
145
146 ✗ if(cell_indices_VBO_ != 0) {
147 ✗ glDeleteBuffers(1,&cell_indices_VBO_);
148 ✗ cell_indices_VBO_ = 0;
149 }
150
151 ✗ if(vertices_attribute_VBO_ != 0) {
152 ✗ glDeleteBuffers(1,&vertices_attribute_VBO_);
153 ✗ vertices_attribute_VBO_ = 0;
154 }
155 ✗ buffer_objects_dirty_ = true;
156 ✗ attributes_buffer_objects_dirty_ = true;
157 ✗ vertices_filter_.dirty = true;
158 ✗ edges_filter_.dirty = true;
159 ✗ facets_filter_.dirty = true;
160 ✗ cells_filter_.dirty = true;
161 ✗ vertices_selection_filter_.dirty = true;
162 ✗ }
163
164 ✗ MeshGfx::~MeshGfx() {
165 ✗ cleanup();
166 ✗ }
167
168 ✗ bool MeshGfx::can_use_array_mode(GLUPprimitive prim) const {
169 ✗ if(do_animation_) {
170 ✗ return false;
171 }
172
173 // Special case: GLUPES2 can use array mode for triangles, but
174 // not with mesh and not with facet shrink.
175 ✗ if(
176 ✗ prim == GLUP_TRIANGLES &&
177 ✗ ES_profile_ &&
178 ✗ (show_mesh_ || shrink_ != 0.0)
179 ) {
180 ✗ return false;
181 }
182
183 // Special case: GLUPES2 can use array mode for lines, but
184 // not if width > 1
185 ✗ if(
186 ✗ prim == GLUP_LINES &&
187 ✗ ES_profile_ &&
188 ✗ (mesh_width_ > 1)
189 ) {
190 ✗ return false;
191 }
192
193 ✗ if(!glupPrimitiveSupportsArrayMode(prim)) {
194 ✗ return false;
195 }
196
197 ✗ if(
198 ✗ attribute_subelements_ != MESH_NONE &&
199 ✗ attribute_subelements_ != MESH_VERTICES
200 ) {
201 ✗ return false;
202 }
203 #ifdef GEO_GL_NO_DOUBLES
204 // If there is an attribute bound, then return false,
205 // this will force switching to immediate mode.
206 if(attribute_subelements_ != MESH_NONE) {
207 return false;
208 }
209 #endif
210 ✗ if(long_vector_attribute_) {
211 ✗ return false;
212 }
213
214 // For now, texturing is only implemented in
215 // immediate mode (TODO: implement tex coords
216 // in vertex array objects).
217 ✗ if(attribute_dim_ > 1) {
218 ✗ return false;
219 }
220
221 ✗ return true;
222 }
223
224
225 /*********************************** vertices ***************/
226
227 ✗ void MeshGfx::draw_vertices_immediate_plain() {
228 ✗ draw_sequences(
229 ✗ mesh_->vertices,
230 ✗ [&](index_t begin_v, index_t end_v) {
231 ✗ glupBegin(GLUP_POINTS);
232 ✗ for(index_t v=begin_v; v<end_v; ++v) {
233 ✗ draw_vertex(v);
234 }
235 ✗ glupEnd();
236 ✗ }
237 );
238 ✗ }
239
240 ✗ void MeshGfx::draw_vertices_immediate_attrib() {
241 ✗ begin_attributes();
242 ✗ draw_sequences(
243 ✗ mesh_->vertices,
244 ✗ [&](index_t begin_v, index_t end_v) {
245 ✗ glupBegin(GLUP_POINTS);
246 ✗ for(index_t v=begin_v; v<end_v; ++v) {
247 ✗ draw_vertex_with_attribute(v);
248 }
249 ✗ glupEnd();
250 ✗ }
251 );
252 ✗ end_attributes();
253 ✗ }
254
255 ✗ void MeshGfx::draw_vertices_array() {
256 ✗ glupBindVertexArray(vertices_VAO_);
257 ✗ if(attribute_subelements_ == MESH_VERTICES) {
258 ✗ begin_attributes();
259 }
260 ✗ vertices_filter_.begin(mesh_->vertices.attributes());
261 ✗ glupDrawArrays(GLUP_POINTS, 0, GLUPsizei(mesh_->vertices.nb()));
262 ✗ vertices_filter_.end();
263 ✗ if(attribute_subelements_ == MESH_VERTICES) {
264 ✗ end_attributes();
265 }
266 ✗ glupBindVertexArray(0);
267 ✗ }
268
269 ✗ void MeshGfx::draw_vertices_selection() {
270 // Fast mode, using a single draw call, unselected vertices are
271 // filtered-out using hardware filtering. Also works for picking
272 // since IDs are correct (extracted from gl_PrimitiveID).
273 ✗ if(hw_filtering_supported()) {
274 ✗ if(
275 ✗ !Attribute<bool>::is_defined(
276 ✗ mesh_->vertices.attributes(), vertices_selection_
277 )
278 ) {
279 ✗ return;
280 }
281 ✗ glupBindVertexArray(vertices_VAO_);
282 ✗ vertices_selection_filter_.begin(mesh_->vertices.attributes());
283 ✗ glupDrawArrays(GLUP_POINTS, 0, GLUPsizei(mesh_->vertices.nb()));
284 ✗ vertices_selection_filter_.end();
285 ✗ glupBindVertexArray(0);
286 ✗ return;
287 }
288
289 // If hw filtering is not supported, use immediate mode.
290 // Note: picking ID would be incorrect, so ignore in picking mode
291 // (vertices can be picked anyway).
292 ✗ if(picking_mode_ != MESH_NONE) {
293 ✗ return;
294 }
295
296 ✗ Attribute<bool> v_selection;
297 ✗ v_selection.bind_if_is_defined(
298 ✗ mesh_->vertices.attributes(), vertices_selection_
299 );
300 ✗ if(!v_selection.is_bound()) {
301 ✗ return;
302 }
303 ✗ glupBegin(GLUP_POINTS);
304 ✗ for(index_t v: mesh_->vertices) {
305 ✗ if(v_selection[v]) {
306 ✗ draw_vertex(v);
307 }
308 }
309 ✗ glupEnd();
310 ✗ }
311
312 ✗ void MeshGfx::draw_vertices() {
313 ✗ if(mesh_ == nullptr || mesh_->vertices.nb() == 0) {
314 ✗ return;
315 }
316
317 ✗ set_GLUP_parameters();
318 ✗ set_GLUP_picking(MESH_VERTICES);
319 ✗ update_buffer_objects_if_needed();
320
321 ✗ glupSetColor4fv(GLUP_FRONT_COLOR, points_color_);
322 ✗ glupSetPointSize(points_size_ * 5.0f);
323
324 ✗ if(vertices_selection_ == "") {
325 ✗ if(
326 ✗ can_use_array_mode(GLUP_POINTS) && vertices_VAO_ != 0
327 ) {
328 ✗ draw_vertices_array();
329 } else {
330 ✗ if(attribute_subelements_ == MESH_VERTICES) {
331 ✗ draw_vertices_immediate_attrib();
332 } else {
333 ✗ draw_vertices_immediate_plain();
334 }
335 }
336 } else {
337 ✗ draw_vertices_selection();
338 }
339
340 ✗ glupDisable(GLUP_PICKING);
341 }
342
343 /*********************************** edges ***************/
344
345 ✗ void MeshGfx::draw_edges_array() {
346 ✗ glupBindVertexArray(edges_VAO_);
347 ✗ if(attribute_subelements_ == MESH_VERTICES) {
348 ✗ begin_attributes();
349 }
350 ✗ edges_filter_.begin(mesh_->edges.attributes());
351 ✗ glupDrawElements(
352 GLUP_LINES,
353 ✗ GLUPsizei(mesh_->edges.nb()*2),
354 GL_UNSIGNED_INT,
355 nullptr
356 );
357 ✗ edges_filter_.end();
358 ✗ if(attribute_subelements_ == MESH_VERTICES) {
359 ✗ end_attributes();
360 }
361 ✗ glupBindVertexArray(0);
362 ✗ }
363
364 ✗ void MeshGfx::draw_edges_immediate_plain() {
365 ✗ edges_filter_.begin(mesh_->edges.attributes(), false);
366 ✗ glupBegin(GLUP_LINES);
367 ✗ for(index_t e: mesh_->edges) {
368 ✗ if(!edges_filter_.test(e)) {
369 ✗ continue;
370 }
371 ✗ index_t v1 = mesh_->edges.vertex(e,0);
372 ✗ index_t v2 = mesh_->edges.vertex(e,1);
373 ✗ draw_vertex(v1);
374 ✗ draw_vertex(v2);
375 }
376 ✗ glupEnd();
377 ✗ edges_filter_.end();
378 ✗ }
379
380 ✗ void MeshGfx::draw_edges_immediate_attrib() {
381 ✗ edges_filter_.begin(mesh_->edges.attributes(), false);
382 ✗ begin_attributes();
383 ✗ if(attribute_subelements_ == MESH_VERTICES) {
384 ✗ glupBegin(GLUP_LINES);
385 ✗ for(index_t e: mesh_->edges) {
386 ✗ if(!edges_filter_.test(e)) {
387 ✗ continue;
388 }
389 ✗ index_t v1 = mesh_->edges.vertex(e,0);
390 ✗ index_t v2 = mesh_->edges.vertex(e,1);
391 ✗ draw_vertex_with_attribute(v1);
392 ✗ draw_vertex_with_attribute(v2);
393 }
394 ✗ glupEnd();
395 ✗ } else if(attribute_subelements_ == MESH_EDGES) {
396 ✗ glupBegin(GLUP_LINES);
397 ✗ for(index_t e: mesh_->edges) {
398 ✗ if(!edges_filter_.test(e)) {
399 ✗ continue;
400 }
401 ✗ index_t v1 = mesh_->edges.vertex(e,0);
402 ✗ index_t v2 = mesh_->edges.vertex(e,1);
403 ✗ draw_attribute_as_tex_coord(e);
404 ✗ draw_vertex(v1);
405 ✗ draw_vertex(v2);
406 }
407 ✗ glupEnd();
408 }
409 ✗ end_attributes();
410 ✗ edges_filter_.end();
411 ✗ }
412
413 ✗ void MeshGfx::draw_edges_picking_filter() {
414 ✗ index_t cur_picking_id = 0;
415 ✗ edges_filter_.begin(mesh_->edges.attributes(), false);
416 ✗ glupBegin(GLUP_LINES);
417 ✗ for(index_t e: mesh_->edges) {
418 ✗ if(!edges_filter_.test(e)) {
419 ✗ continue;
420 }
421 ✗ if(cur_picking_id != e) {
422 ✗ glupEnd();
423 ✗ glupBasePickingId(e);
424 ✗ cur_picking_id = e;
425 ✗ glupBegin(GLUP_LINES);
426 }
427 ✗ index_t v1 = mesh_->edges.vertex(e,0);
428 ✗ index_t v2 = mesh_->edges.vertex(e,1);
429 ✗ draw_vertex(v1);
430 ✗ draw_vertex(v2);
431 ✗ ++cur_picking_id;
432 }
433 ✗ glupEnd();
434 ✗ edges_filter_.end();
435 ✗ glupBasePickingId(0);
436 ✗ }
437
438
439 ✗ void MeshGfx::draw_edges() {
440 ✗ if(mesh_ == nullptr || mesh_->edges.nb() == 0) {
441 ✗ return;
442 }
443
444 ✗ set_GLUP_parameters();
445 // TODO: maybe reactivate if we implement nice shaded cylinders
446 ✗ glupDisable(GLUP_LIGHTING);
447 ✗ set_GLUP_picking(MESH_EDGES); // HERE
448 ✗ update_buffer_objects_if_needed();
449
450 ✗ glupSetColor4fv(GLUP_FRONT_COLOR, mesh_color_);
451 ✗ glupSetMeshWidth(GLUPint(mesh_width_));
452
453 ✗ if(
454 ✗ glupIsEnabled(GLUP_PICKING) &&
455 ✗ glupGetPickingMode() == GLUP_PICK_PRIMITIVE &&
456 ✗ edges_filter_.attribute_name != ""
457 ) {
458 ✗ draw_edges_picking_filter();
459 ✗ } else if(can_use_array_mode(GLUP_LINES) && edges_VAO_ != 0) {
460 ✗ draw_edges_array();
461 } else {
462 ✗ if(attribute_subelements_ == MESH_VERTICES ||
463 ✗ attribute_subelements_ == MESH_EDGES) {
464 ✗ draw_edges_immediate_attrib();
465 } else {
466 ✗ draw_edges_immediate_plain();
467 }
468 }
469 }
470
471 /******************************************************************/
472
473 ✗ void MeshGfx::draw_triangles() {
474 ✗ if(can_use_array_mode(GLUP_TRIANGLES) && facets_VAO_ != 0) {
475 ✗ draw_triangles_array();
476 } else {
477 ✗ if(
478 ✗ attribute_subelements_ == MESH_VERTICES ||
479 ✗ attribute_subelements_ == MESH_FACETS ||
480 ✗ attribute_subelements_ == MESH_FACET_CORNERS
481 ) {
482 ✗ draw_triangles_immediate_attrib();
483 } else {
484 ✗ draw_triangles_immediate_plain();
485 }
486 }
487 ✗ }
488
489 ✗ void MeshGfx::draw_triangles_array() {
490 ✗ glupBindVertexArray(facets_VAO_);
491 ✗ if(attribute_subelements_ == MESH_VERTICES) {
492 ✗ begin_attributes();
493 }
494 ✗ facets_filter_.begin(mesh_->facets.attributes());
495 ✗ glupDrawElements(
496 GLUP_TRIANGLES,
497 ✗ GLUPsizei(mesh_->facets.nb()*3),
498 GL_UNSIGNED_INT,
499 nullptr
500 );
501 ✗ facets_filter_.end();
502 ✗ if(attribute_subelements_ == MESH_VERTICES) {
503 ✗ end_attributes();
504 }
505 ✗ glupBindVertexArray(0);
506 ✗ }
507
508 ✗ void MeshGfx::draw_triangles_immediate_plain() {
509 // If filter is active, use generic code
510 ✗ if(facets_filter_.attribute_name != "") {
511 ✗ draw_sequences(
512 ✗ mesh_->facets,
513 ✗ [&](index_t begin_f, index_t end_f) {
514 ✗ glupBegin(GLUP_TRIANGLES);
515 ✗ for(index_t f=begin_f; f<end_f; ++f) {
516 ✗ draw_vertex(mesh_->facets.vertex(f,0));
517 ✗ draw_vertex(mesh_->facets.vertex(f,1));
518 ✗ draw_vertex(mesh_->facets.vertex(f,2));
519 }
520 ✗ glupEnd();
521 ✗ }
522 );
523 ✗ return;
524 }
525
526 // Optimized code for triangle surface with no attribute, single
527 // and double precision. Writes mesh data directly in GLUP buffers.
528 ✗ glupBegin(GLUP_TRIANGLES);
529 ✗ if(!do_animation_ && mesh_->vertices.dimension() >= 3) {
530 ✗ GLUP::Context* context = (GLUP::Context*)(glupCurrentContext());
531 ✗ GLUP::ImmediateState& state = context->immediate_state();
532 ✗ GLUP::ImmediateBuffer& buffer =
533 state.buffer[GLUP::GLUP_VERTEX_ATTRIBUTE];
534 ✗ if(mesh_->vertices.single_precision()) {
535 ✗ index_t t1 = 0;
536 ✗ while(t1 < mesh_->facets.nb()) {
537 ✗ index_t t2 = t1 + (state.max_current_vertex()/3);
538 ✗ t2 = std::min(t2, mesh_->facets.nb());
539 ✗ GLfloat* current_vertex = buffer.data();
540 ✗ for(index_t t=t1; t<t2; ++t) {
541 ✗ for(index_t lv=0; lv<3; ++lv) {
542 ✗ index_t v = mesh_->facets.vertex(t,lv);
543 ✗ const float* p = mesh_->vertices.
544 ✗ single_precision_point_ptr(v);
545 ✗ current_vertex[0] = p[0];
546 ✗ current_vertex[1] = p[1];
547 ✗ current_vertex[2] = p[2];
548 ✗ current_vertex[3] = 1.0f;
549 ✗ current_vertex += 4;
550 }
551 }
552 ✗ state.set_current_vertex(3*(t2-t1));
553 ✗ context->flush_immediate_buffers();
554 ✗ t1 = t2;
555 }
556 } else {
557 ✗ index_t t1 = 0;
558 ✗ while(t1 < mesh_->facets.nb()) {
559 ✗ index_t t2 = t1 + (state.max_current_vertex()/3);
560 ✗ t2 = std::min(t2, mesh_->facets.nb());
561 ✗ GLfloat* current_vertex = buffer.data();
562 ✗ for(index_t t=t1; t<t2; ++t) {
563 ✗ for(index_t lv=0; lv<3; ++lv) {
564 ✗ index_t v = mesh_->facets.vertex(t,lv);
565 ✗ const double* p = mesh_->vertices.point_ptr(v);
566 ✗ current_vertex[0] = float(p[0]);
567 ✗ current_vertex[1] = float(p[1]);
568 ✗ current_vertex[2] = float(p[2]);
569 ✗ current_vertex[3] = 1.0f;
570 ✗ current_vertex += 4;
571 }
572 }
573 ✗ state.set_current_vertex(3*(t2-t1));
574 ✗ context->flush_immediate_buffers();
575 ✗ t1 = t2;
576 }
577 }
578 } else {
579 ✗ for(index_t t: mesh_->facets) {
580 ✗ draw_vertex(mesh_->facets.vertex(t,0));
581 ✗ draw_vertex(mesh_->facets.vertex(t,1));
582 ✗ draw_vertex(mesh_->facets.vertex(t,2));
583 }
584 }
585 ✗ glupEnd();
586 }
587
588 ✗ void MeshGfx::draw_triangles_immediate_attrib() {
589 ✗ begin_attributes();
590 ✗ draw_sequences(
591 ✗ mesh_->facets,
592 ✗ [&](index_t begin_f, index_t end_f) {
593 ✗ glupBegin(GLUP_TRIANGLES);
594 ✗ for(index_t f=begin_f; f<end_f; ++f) {
595 ✗ for(index_t c: mesh_->facets.corners(f)) {
596 ✗ index_t v=mesh_->facet_corners.vertex(c);
597 ✗ draw_surface_vertex_with_attribute(v,f,c);
598 }
599 }
600 ✗ glupEnd();
601 ✗ }
602 );
603 ✗ end_attributes();
604 ✗ }
605
606 ✗ void MeshGfx::draw_quads() {
607 ✗ if(can_use_array_mode(GLUP_QUADS) && facets_VAO_ != 0) {
608 ✗ draw_quads_array();
609 } else {
610 ✗ if(
611 ✗ attribute_subelements_ == MESH_VERTICES ||
612 ✗ attribute_subelements_ == MESH_FACETS ||
613 ✗ attribute_subelements_ == MESH_FACET_CORNERS
614 ) {
615 ✗ draw_quads_immediate_attrib();
616 } else {
617 ✗ draw_quads_immediate_plain();
618 }
619 }
620 ✗ }
621
622 ✗ void MeshGfx::draw_quads_array() {
623 ✗ glupBindVertexArray(facets_VAO_);
624 ✗ if(attribute_subelements_ == MESH_VERTICES) {
625 ✗ begin_attributes();
626 }
627 ✗ facets_filter_.begin(mesh_->facets.attributes());
628 ✗ glupDrawElements(
629 GLUP_QUADS,
630 ✗ GLUPsizei(mesh_->facets.nb()*4),
631 GL_UNSIGNED_INT,
632 nullptr
633 );
634 ✗ facets_filter_.end();
635 ✗ if(attribute_subelements_ == MESH_VERTICES) {
636 ✗ end_attributes();
637 }
638 ✗ glupBindVertexArray(0);
639 ✗ }
640
641 ✗ void MeshGfx::draw_quads_immediate_plain() {
642 ✗ draw_sequences(
643 ✗ mesh_->facets,
644 ✗ [&](index_t begin_f, index_t end_f) {
645 ✗ glupBegin(GLUP_QUADS);
646 ✗ for(index_t q=begin_f; q<end_f; ++q) {
647 ✗ draw_vertex(mesh_->facets.vertex(q,0));
648 ✗ draw_vertex(mesh_->facets.vertex(q,1));
649 ✗ draw_vertex(mesh_->facets.vertex(q,2));
650 ✗ draw_vertex(mesh_->facets.vertex(q,3));
651 }
652 ✗ glupEnd();
653 ✗ }
654 );
655 ✗ }
656
657 ✗ void MeshGfx::draw_quads_immediate_attrib() {
658 ✗ begin_attributes();
659 ✗ draw_sequences(
660 ✗ mesh_->facets,
661 ✗ [&](index_t begin_f, index_t end_f) {
662 ✗ glupBegin(GLUP_QUADS);
663 ✗ for(index_t q=begin_f; q<end_f; ++q) {
664 ✗ for(index_t c: mesh_->facets.corners(q)) {
665 ✗ index_t v=mesh_->facet_corners.vertex(c);
666 ✗ draw_surface_vertex_with_attribute(v,q,c);
667 }
668 }
669 ✗ glupEnd();
670 ✗ }
671 );
672 ✗ end_attributes();
673 ✗ }
674
675 ✗ void MeshGfx::draw_triangles_and_quads() {
676
677 ✗ if(picking_mode_ != MESH_NONE) {
678 ✗ draw_polygons_plain();
679 ✗ return;
680 }
681
682 ✗ if(
683 ✗ can_use_array_mode(GLUP_TRIANGLES) &&
684 ✗ can_use_array_mode(GLUP_QUADS) &&
685 ✗ facets_VAO_ != 0
686 ) {
687 ✗ draw_triangles_and_quads_array();
688 } else {
689 ✗ if(
690 ✗ attribute_subelements_ == MESH_VERTICES ||
691 ✗ attribute_subelements_ == MESH_FACETS ||
692 ✗ attribute_subelements_ == MESH_FACET_CORNERS
693 ) {
694 ✗ draw_triangles_and_quads_immediate_attrib();
695 } else {
696 ✗ draw_triangles_and_quads_immediate_plain();
697 }
698 }
699 }
700
701 ✗ void MeshGfx::draw_triangles_and_quads_array() {
702
703 // Note: to go faster, here we could draw sequences of triangles
704 // and quads without taking filtering into account and do the
705 // filtering in hw (but well difference will not be so important).
706
707 ✗ glupBindVertexArray(facets_VAO_);
708 ✗ if(attribute_subelements_ == MESH_VERTICES) {
709 ✗ begin_attributes();
710 }
711
712 // draw triangles
713 ✗ draw_sequences_if(
714 ✗ mesh_->facets,
715 ✗ [&](index_t f) { return (mesh_->facets.nb_vertices(f) == 3); },
716 ✗ [&](index_t begin_f, index_t end_f) {
717 ✗ glupDrawElements(
718 GLUP_TRIANGLES,
719 ✗ GLUPsizei((end_f-begin_f)*3),
720 GL_UNSIGNED_INT,
721 (GLUPvoid*)(
722 ✗ mesh_->facets.corners_begin(begin_f) * sizeof(index_t)
723 )
724 );
725 ✗ }
726 );
727
728 // draw quads
729 ✗ draw_sequences_if(
730 ✗ mesh_->facets,
731 ✗ [&](index_t f) { return (mesh_->facets.nb_vertices(f) == 4); },
732 ✗ [&](index_t begin_f, index_t end_f) {
733 ✗ glupDrawElements(
734 GLUP_QUADS,
735 ✗ GLUPsizei((end_f-begin_f)*4),
736 GL_UNSIGNED_INT,
737 (GLUPvoid*)(
738 ✗ mesh_->facets.corners_begin(begin_f) * sizeof(index_t)
739 )
740 );
741 ✗ }
742 );
743
744 ✗ if(attribute_subelements_ == MESH_VERTICES) {
745 ✗ end_attributes();
746 }
747 ✗ glupBindVertexArray(0);
748 ✗ }
749
750 ✗ void MeshGfx::draw_triangles_and_quads_immediate_plain() {
751
752 // draw triangles
753 ✗ draw_sequences_if(
754 ✗ mesh_->facets,
755 ✗ [&](index_t f) { return (mesh_->facets.nb_vertices(f) == 3); },
756 ✗ [&](index_t begin_f, index_t end_f) {
757 ✗ glupBegin(GLUP_TRIANGLES);
758 ✗ for(index_t t = begin_f; t < end_f; ++t) {
759 ✗ draw_vertex(mesh_->facets.vertex(t,0));
760 ✗ draw_vertex(mesh_->facets.vertex(t,1));
761 ✗ draw_vertex(mesh_->facets.vertex(t,2));
762 }
763 ✗ glupEnd();
764 ✗ }
765 );
766
767 // draw quads
768 ✗ draw_sequences_if(
769 ✗ mesh_->facets,
770 ✗ [&](index_t f) { return (mesh_->facets.nb_vertices(f) == 4); },
771 ✗ [&](index_t begin_f, index_t end_f) {
772 ✗ glupBegin(GLUP_QUADS);
773 ✗ for(index_t q = begin_f; q < end_f; ++q) {
774 ✗ draw_vertex(mesh_->facets.vertex(q,0));
775 ✗ draw_vertex(mesh_->facets.vertex(q,1));
776 ✗ draw_vertex(mesh_->facets.vertex(q,2));
777 ✗ draw_vertex(mesh_->facets.vertex(q,3));
778 }
779 ✗ glupEnd();
780 ✗ }
781 );
782 ✗ }
783
784 ✗ void MeshGfx::draw_triangles_and_quads_immediate_attrib() {
785 ✗ begin_attributes();
786
787 // draw triangles
788 ✗ draw_sequences_if(
789 ✗ mesh_->facets,
790 ✗ [&](index_t f) { return (mesh_->facets.nb_vertices(f) == 3); },
791 ✗ [&](index_t begin_f, index_t end_f) {
792 ✗ glupBegin(GLUP_TRIANGLES);
793 ✗ for(index_t f = begin_f; f < end_f; ++f) {
794 ✗ for(index_t c: mesh_->facets.corners(f)) {
795 ✗ index_t v=mesh_->facet_corners.vertex(c);
796 ✗ draw_surface_vertex_with_attribute(v,f,c);
797 }
798 }
799 ✗ glupEnd();
800 ✗ }
801 );
802
803 // draw quads
804 ✗ draw_sequences_if(
805 ✗ mesh_->facets,
806 ✗ [&](index_t f) { return (mesh_->facets.nb_vertices(f) == 4); },
807 ✗ [&](index_t begin_f, index_t end_f) {
808 ✗ glupBegin(GLUP_QUADS);
809 ✗ for(index_t f = begin_f; f < end_f; ++f) {
810 ✗ for(index_t c: mesh_->facets.corners(f)) {
811 ✗ index_t v=mesh_->facet_corners.vertex(c);
812 ✗ draw_surface_vertex_with_attribute(v,f,c);
813 }
814 }
815 ✗ glupEnd();
816 ✗ }
817 );
818
819 ✗ end_attributes();
820 ✗ }
821
822 ✗ void MeshGfx::draw_polygons() {
823 ✗ if(
824 ✗ picking_mode_ == MESH_NONE && (
825 ✗ attribute_subelements_ == MESH_VERTICES ||
826 ✗ attribute_subelements_ == MESH_FACETS ||
827 ✗ attribute_subelements_ == MESH_FACET_CORNERS
828 )
829 ) {
830 ✗ draw_polygons_attrib();
831 } else {
832 ✗ draw_polygons_plain();
833 }
834 ✗ }
835
836 ✗ void MeshGfx::draw_polygons_plain() {
837 ✗ glupDisable(GLUP_DRAW_MESH);
838
839 // Using vertex colors to do the picking.
840 ✗ if(picking_mode_ != MESH_NONE) {
841 ✗ glupDisable(GLUP_PICKING);
842 ✗ glupDisable(GLUP_LIGHTING);
843 ✗ glupEnable(GLUP_VERTEX_COLORS);
844 }
845
846 ✗ facets_filter_.begin(mesh_->facets.attributes(),false);
847
848 ✗ glupBegin(GLUP_TRIANGLES);
849 ✗ bool picking_vertex_colors = false;
850 ✗ if(picking_mode_ != MESH_NONE) {
851 ✗ picking_vertex_colors = (
852 ✗ (picking_mode_ & MESH_FACETS) != 0 &&
853 ✗ object_picking_id_ == NO_INDEX
854 );
855 ✗ set_GLUP_vertex_color_from_picking_id(object_picking_id_);
856 }
857 ✗ for(index_t f: mesh_->facets) {
858 ✗ if(!facets_filter_.test(f)) {
859 ✗ continue;
860 }
861 ✗ if(picking_vertex_colors) {
862 ✗ set_GLUP_vertex_color_from_picking_id(f);
863 }
864 ✗ index_t v1 = mesh_->facets.vertex(f,0);
865 ✗ for(index_t lv=1; lv+1<mesh_->facets.nb_vertices(f); ++lv) {
866 ✗ index_t v2 = mesh_->facets.vertex(f,lv);
867 ✗ index_t v3 = mesh_->facets.vertex(f,lv+1);
868 ✗ draw_vertex(v1);
869 ✗ draw_vertex(v2);
870 ✗ draw_vertex(v3);
871 }
872 }
873 ✗ glupEnd();
874 ✗ glupDisable(GLUP_VERTEX_COLORS);
875
876 ✗ facets_filter_.end();
877
878 ✗ if(show_mesh_ && (picking_mode_ == MESH_NONE)) {
879 ✗ draw_surface_mesh_with_lines();
880 }
881 ✗ }
882
883 ✗ void MeshGfx::draw_polygons_attrib() {
884 ✗ begin_attributes();
885 ✗ facets_filter_.begin(mesh_->facets.attributes(),false);
886 ✗ glupDisable(GLUP_DRAW_MESH);
887 ✗ glupBegin(GLUP_TRIANGLES);
888 ✗ for(index_t f: mesh_->facets) {
889 ✗ if(!facets_filter_.test(f)) {
890 ✗ continue;
891 }
892 ✗ index_t c1 = mesh_->facets.corners_begin(f);
893 ✗ index_t v1 = mesh_->facet_corners.vertex(c1);
894 ✗ for(
895 ✗ index_t c2 = c1+1;
896 ✗ c2+1<mesh_->facets.corners_end(f); ++c2
897 ) {
898 ✗ index_t c3=c2+1;
899 ✗ index_t v2=mesh_->facet_corners.vertex(c2);
900 ✗ index_t v3=mesh_->facet_corners.vertex(c3);
901 ✗ draw_surface_vertex_with_attribute(v1,f,c1);
902 ✗ draw_surface_vertex_with_attribute(v2,f,c2);
903 ✗ draw_surface_vertex_with_attribute(v3,f,c3);
904 }
905 }
906 ✗ glupEnd();
907 ✗ facets_filter_.end();
908 ✗ end_attributes();
909 ✗ if(show_mesh_ && (picking_mode_ == MESH_NONE)) {
910 ✗ glupDisable(GLUP_VERTEX_COLORS);
911 ✗ draw_surface_mesh_with_lines();
912 }
913 ✗ }
914
915 ✗ void MeshGfx::draw_surface() {
916 ✗ if(mesh_ == nullptr || mesh_->facets.nb() == 0) {
917 ✗ return;
918 }
919 ✗ set_GLUP_parameters();
920 ✗ set_GLUP_picking(MESH_FACETS);
921 ✗ update_buffer_objects_if_needed();
922
923 ✗ glupSetCellsShrink(0.0f);
924
925 ✗ if(
926 ✗ attribute_subelements_ != MESH_NONE &&
927 ✗ !glupIsEnabled(GLUP_NORMAL_MAPPING)
928 ) {
929 ✗ glupSetColor3f(GLUP_FRONT_AND_BACK_COLOR, 1.0f, 1.0f, 1.0f);
930 } else {
931 ✗ glupSetColor4fv(GLUP_FRONT_COLOR, surface_color_);
932 ✗ glupSetColor4fv(GLUP_BACK_COLOR, backface_surface_color_);
933 }
934
935 ✗ if(mesh_->facets.are_simplices()) {
936 ✗ draw_triangles();
937 ✗ } else if(quads_) {
938 ✗ draw_quads();
939 ✗ } else if(triangles_and_quads_) {
940 ✗ draw_triangles_and_quads();
941 } else {
942 ✗ draw_polygons();
943 }
944 }
945
946 ✗ void MeshGfx::draw_surface_mesh_with_lines() {
947 ✗ facets_filter_.begin(mesh_->facets.attributes(),false);
948 ✗ glupSetMeshWidth(GLUPint(mesh_width_));
949 ✗ glupSetColor4fv(GLUP_FRONT_AND_BACK_COLOR, mesh_color_);
950 ✗ glupBegin(GLUP_LINES);
951 ✗ for(index_t f: mesh_->facets) {
952 ✗ if(!facets_filter_.test(f)) {
953 ✗ continue;
954 }
955 ✗ for(index_t c1: mesh_->facets.corners(f)) {
956 index_t c2 =
957 ✗ mesh_->facets.next_corner_around_facet(f,c1);
958 ✗ index_t v1 = mesh_->facet_corners.vertex(c1);
959 ✗ index_t v2 = mesh_->facet_corners.vertex(c2);
960 ✗ draw_vertex(v1);
961 ✗ draw_vertex(v2);
962 }
963 }
964 ✗ glupEnd();
965 ✗ facets_filter_.end();
966 ✗ }
967
968 ✗ void MeshGfx::draw_surface_borders() {
969 ✗ if(picking_mode_ != MESH_NONE) {
970 ✗ return;
971 }
972 ✗ facets_filter_.begin(mesh_->facets.attributes(),false);
973 ✗ set_GLUP_parameters();
974 ✗ glupDisable(GLUP_LIGHTING); // TODO: maybe reactivate if we implement nice shaded cylinders
975 ✗ glupSetColor4fv(GLUP_FRONT_COLOR, mesh_color_);
976 ✗ glupSetMeshWidth(GLUPint(mesh_border_width_));
977 ✗ glupBegin(GLUP_LINES);
978 ✗ for(index_t f: mesh_->facets) {
979 ✗ if(!facets_filter_.test(f)) {
980 ✗ continue;
981 }
982 ✗ for(index_t c1: mesh_->facets.corners(f)) {
983 ✗ if(mesh_->facet_corners.adjacent_facet(c1) == NO_FACET) {
984 ✗ index_t v1 = mesh_->facet_corners.vertex(c1);
985 ✗ index_t c2 = mesh_->facets.next_corner_around_facet(f,c1);
986 ✗ index_t v2 = mesh_->facet_corners.vertex(c2);
987 ✗ draw_vertex(v1);
988 ✗ draw_vertex(v2);
989 }
990 }
991 }
992 ✗ glupEnd();
993 ✗ facets_filter_.end();
994 ✗ glupDisable(GLUP_DRAW_MESH);
995 }
996
997 /***********************************************************************/
998
999 ✗ void MeshGfx::draw_tets() {
1000 ✗ if(!draw_cells_[MESH_TET]) {
1001 ✗ return;
1002 }
1003 ✗ glupSetColor4fv(GLUP_FRONT_AND_BACK_COLOR, cells_color_[MESH_TET]);
1004 ✗ if(can_use_array_mode(GLUP_TETRAHEDRA) && cells_VAO_ != 0) {
1005 ✗ draw_tets_array();
1006 } else {
1007 ✗ if(
1008 ✗ attribute_subelements_ == MESH_VERTICES ||
1009 ✗ attribute_subelements_ == MESH_CELLS ||
1010 ✗ attribute_subelements_ == MESH_CELL_FACETS ||
1011 ✗ attribute_subelements_ == MESH_CELL_CORNERS
1012 ) {
1013 ✗ draw_tets_immediate_attrib();
1014 } else {
1015 ✗ draw_tets_immediate_plain();
1016 }
1017 }
1018 }
1019
1020 ✗ void MeshGfx::draw_tets_array() {
1021 ✗ glupBindVertexArray(cells_VAO_);
1022 ✗ if(attribute_subelements_ == MESH_VERTICES) {
1023 ✗ begin_attributes();
1024 }
1025 ✗ cells_filter_.begin(mesh_->cells.attributes());
1026 ✗ glupDrawElements(
1027 GLUP_TETRAHEDRA,
1028 ✗ GLUPsizei(mesh_->cells.nb()*4),
1029 GL_UNSIGNED_INT,
1030 nullptr
1031 );
1032 ✗ cells_filter_.end();
1033 ✗ if(attribute_subelements_ == MESH_VERTICES) {
1034 ✗ end_attributes();
1035 }
1036 ✗ glupBindVertexArray(0);
1037 ✗ }
1038
1039 ✗ void MeshGfx::draw_tets_immediate_plain() {
1040
1041 // If filter is active, use generic code
1042 ✗ if(cells_filter_.attribute_name != "") {
1043 ✗ draw_sequences(
1044 ✗ mesh_->cells,
1045 ✗ [&](index_t begin_t, index_t end_t) {
1046 ✗ glupBegin(GLUP_TETRAHEDRA);
1047 ✗ for(index_t t=begin_t; t<end_t; ++t) {
1048 ✗ draw_vertex(mesh_->cells.vertex(t,0));
1049 ✗ draw_vertex(mesh_->cells.vertex(t,1));
1050 ✗ draw_vertex(mesh_->cells.vertex(t,2));
1051 ✗ draw_vertex(mesh_->cells.vertex(t,3));
1052 }
1053 ✗ glupEnd();
1054 ✗ }
1055 );
1056 ✗ return;
1057 }
1058
1059 // Optimized code for tet mesh with no attribute, single
1060 // and double precision. Writes mesh data directly in GLUP buffers.
1061 ✗ glupBegin(GLUP_TETRAHEDRA);
1062 ✗ if(!do_animation_ && mesh_->vertices.dimension() >= 3) {
1063 ✗ GLUP::Context* context = (GLUP::Context*)(glupCurrentContext());
1064 ✗ GLUP::ImmediateState& state = context->immediate_state();
1065 ✗ GLUP::ImmediateBuffer& buffer =
1066 state.buffer[GLUP::GLUP_VERTEX_ATTRIBUTE];
1067 ✗ if(mesh_->vertices.single_precision()) {
1068 ✗ index_t t1 = 0;
1069 ✗ while(t1 < mesh_->cells.nb()) {
1070 ✗ index_t t2 = t1 + (state.max_current_vertex()/4);
1071 ✗ t2 = std::min(t2, mesh_->cells.nb());
1072 ✗ GLfloat* current_vertex = buffer.data();
1073 ✗ for(index_t t=t1; t<t2; ++t) {
1074 ✗ for(index_t lv=0; lv<4; ++lv) {
1075 ✗ index_t v = mesh_->cells.vertex(t,lv);
1076 ✗ const float* p = mesh_->vertices.
1077 ✗ single_precision_point_ptr(v);
1078 ✗ current_vertex[0] = p[0];
1079 ✗ current_vertex[1] = p[1];
1080 ✗ current_vertex[2] = p[2];
1081 ✗ current_vertex[3] = 1.0f;
1082 ✗ current_vertex += 4;
1083 }
1084 }
1085 ✗ state.set_current_vertex(4*(t2-t1));
1086 ✗ context->flush_immediate_buffers();
1087 ✗ t1 = t2;
1088 }
1089 } else {
1090 ✗ index_t t1 = 0;
1091 ✗ while(t1 < mesh_->cells.nb()) {
1092 ✗ index_t t2 = t1 + (state.max_current_vertex()/4);
1093 ✗ t2 = std::min(t2, mesh_->cells.nb());
1094 ✗ GLfloat* current_vertex = buffer.data();
1095 ✗ for(index_t t=t1; t<t2; ++t) {
1096 ✗ for(index_t lv=0; lv<4; ++lv) {
1097 ✗ index_t v = mesh_->cells.vertex(t,lv);
1098 ✗ const double* p = mesh_->vertices.point_ptr(v);
1099 ✗ current_vertex[0] = float(p[0]);
1100 ✗ current_vertex[1] = float(p[1]);
1101 ✗ current_vertex[2] = float(p[2]);
1102 ✗ current_vertex[3] = 1.0f;
1103 ✗ current_vertex += 4;
1104 }
1105 }
1106 ✗ state.set_current_vertex(4*(t2-t1));
1107 ✗ context->flush_immediate_buffers();
1108 ✗ t1 = t2;
1109 }
1110 }
1111 } else {
1112 ✗ for(index_t t: mesh_->cells) {
1113 ✗ draw_vertex(mesh_->cells.vertex(t,0));
1114 ✗ draw_vertex(mesh_->cells.vertex(t,1));
1115 ✗ draw_vertex(mesh_->cells.vertex(t,2));
1116 ✗ draw_vertex(mesh_->cells.vertex(t,3));
1117 }
1118 }
1119 ✗ glupEnd();
1120 }
1121
1122 ✗ void MeshGfx::draw_tets_immediate_attrib() {
1123 ✗ begin_attributes();
1124 ✗ draw_sequences(
1125 ✗ mesh_->cells,
1126 ✗ [&](index_t begin_t, index_t end_t) {
1127 ✗ glupBegin(GLUP_TETRAHEDRA);
1128 ✗ for(index_t t=begin_t; t<end_t; ++t) {
1129 ✗ index_t c0 = 4*t;
1130 ✗ index_t v0 = mesh_->cells.vertex(t,0);
1131 ✗ index_t v1 = mesh_->cells.vertex(t,1);
1132 ✗ index_t v2 = mesh_->cells.vertex(t,2);
1133 ✗ index_t v3 = mesh_->cells.vertex(t,3);
1134 ✗ draw_volume_vertex_with_attribute(v0, t, c0);
1135 ✗ draw_volume_vertex_with_attribute(v1, t, c0+1);
1136 ✗ draw_volume_vertex_with_attribute(v2, t, c0+2);
1137 ✗ draw_volume_vertex_with_attribute(v3, t, c0+3);
1138 }
1139 ✗ glupEnd();
1140 ✗ }
1141 );
1142 ✗ end_attributes();
1143 ✗ }
1144
1145 static GLUPprimitive geogram_cell_to_glup[MESH_NB_CELL_TYPES] = {
1146 GLUP_TETRAHEDRA,
1147 GLUP_HEXAHEDRA,
1148 GLUP_PRISMS,
1149 GLUP_PYRAMIDS,
1150 GLUP_CONNECTORS
1151 };
1152
1153 ✗ void MeshGfx::draw_hybrid() {
1154 ✗ if(
1155 ✗ cells_VAO_ != 0 &&
1156 ✗ (!has_cells_[MESH_TET] || can_use_array_mode(GLUP_TETRAHEDRA)) &&
1157 ✗ (!has_cells_[MESH_HEX] || can_use_array_mode(GLUP_HEXAHEDRA) ) &&
1158 ✗ (!has_cells_[MESH_PRISM] || can_use_array_mode(GLUP_PRISMS) ) &&
1159 ✗ (!has_cells_[MESH_PYRAMID] || can_use_array_mode(GLUP_PYRAMIDS) ) &&
1160 ✗ (!has_cells_[MESH_CONNECTOR] || can_use_array_mode(GLUP_CONNECTORS))
1161 ) {
1162 ✗ draw_hybrid_array();
1163 } else {
1164 ✗ if(
1165 (
1166 ✗ picking_mode_ == MESH_NONE) && (
1167 ✗ attribute_subelements_ == MESH_VERTICES ||
1168 ✗ attribute_subelements_ == MESH_CELLS ||
1169 ✗ attribute_subelements_ == MESH_CELL_FACETS ||
1170 ✗ attribute_subelements_ == MESH_CELL_CORNERS
1171 )
1172 ) {
1173 ✗ draw_hybrid_immediate_attrib();
1174 } else {
1175 ✗ draw_hybrid_immediate_plain();
1176 }
1177 }
1178 ✗ }
1179
1180 ✗ void MeshGfx::draw_hybrid_array() {
1181
1182 // Note: to go faster, here we could draw sequences of primitives
1183 // without taking filtering into account and do the
1184 // filtering in hw (but well difference will not be so important).
1185
1186 ✗ glupBindVertexArray(cells_VAO_);
1187 ✗ if(attribute_subelements_ == MESH_VERTICES) {
1188 ✗ begin_attributes();
1189 }
1190
1191 ✗ for(index_t type=MESH_TET; type < MESH_NB_CELL_TYPES; ++type) {
1192 ✗ if(!draw_cells_[type] || !has_cells_[type]) {
1193 ✗ continue;
1194 }
1195
1196 ✗ if(attribute_subelements_ != MESH_VERTICES) {
1197 ✗ glupSetColor4fv(GLUP_FRONT_AND_BACK_COLOR, cells_color_[type]);
1198 }
1199
1200 ✗ GLUPprimitive glup_prim = geogram_cell_to_glup[type];
1201 ✗ index_t nb_vertices = mesh_->cells.cell_type_to_cell_descriptor(
1202 MeshCellType(type)
1203 ✗ ).nb_vertices;
1204
1205 ✗ draw_sequences_if(
1206 ✗ mesh_->cells,
1207 ✗ [&](index_t c) { return index_t(mesh_->cells.type(c))==type; },
1208 ✗ [&](index_t begin_c, index_t end_c) {
1209 ✗ glupDrawElements(
1210 glup_prim,
1211 ✗ GLUPsizei((end_c-begin_c)*nb_vertices),
1212 GL_UNSIGNED_INT,
1213 (GLUPvoid*)(
1214 ✗ mesh_->cells.corners_begin(begin_c)*sizeof(index_t)
1215 )
1216 );
1217 ✗ }
1218 );
1219 }
1220
1221 ✗ if(attribute_subelements_ == MESH_VERTICES) {
1222 ✗ end_attributes();
1223 }
1224 ✗ glupBindVertexArray(0);
1225 ✗ }
1226
1227 ✗ void MeshGfx::draw_hybrid_immediate_plain() {
1228 ✗ for(index_t type=MESH_TET; type < MESH_NB_CELL_TYPES; ++type) {
1229 ✗ if(!draw_cells_[type] || !has_cells_[type]) {
1230 ✗ continue;
1231 }
1232 ✗ glupSetColor4fv(GLUP_FRONT_AND_BACK_COLOR, cells_color_[type]);
1233 ✗ draw_sequences_if(
1234 ✗ mesh_->cells,
1235 ✗ [&](index_t c) { return index_t(mesh_->cells.type(c))==type; },
1236 ✗ [&](index_t begin_c, index_t end_c) {
1237 ✗ glupBegin(geogram_cell_to_glup[type]);
1238 ✗ for(index_t c=begin_c; c<end_c; ++c) {
1239 ✗ for(index_t lv=0;lv<mesh_->cells.nb_vertices(c);++lv) {
1240 ✗ draw_vertex(mesh_->cells.vertex(c,lv));
1241 }
1242 }
1243 ✗ glupEnd();
1244 ✗ }
1245 );
1246 }
1247 ✗ }
1248
1249 ✗ void MeshGfx::draw_hybrid_immediate_attrib() {
1250 ✗ begin_attributes();
1251 ✗ for(index_t type=MESH_TET; type < MESH_NB_CELL_TYPES; ++type) {
1252 ✗ if(!draw_cells_[type] || !has_cells_[type]) {
1253 ✗ continue;
1254 }
1255 ✗ draw_sequences_if(
1256 ✗ mesh_->cells,
1257 ✗ [&](index_t c) { return index_t(mesh_->cells.type(c))==type; },
1258 ✗ [&](index_t begin_c, index_t end_c) {
1259 ✗ glupBegin(geogram_cell_to_glup[type]);
1260 ✗ for(index_t c=begin_c; c<end_c; ++c) {
1261 ✗ index_t c0 = mesh_->cells.corners_begin(c);
1262 ✗ for(index_t lv=0;lv<mesh_->cells.nb_vertices(c);++lv) {
1263 ✗ draw_volume_vertex_with_attribute(
1264 ✗ mesh_->cells.vertex(c,lv),
1265 c,
1266 c0+lv
1267 );
1268 }
1269 }
1270 ✗ glupEnd();
1271 ✗ }
1272 );
1273 }
1274 ✗ end_attributes();
1275 ✗ }
1276
1277 ✗ void MeshGfx::draw_volume() {
1278 ✗ if(mesh_ == nullptr || mesh_->cells.nb() == 0) {
1279 ✗ return;
1280 }
1281 ✗ set_GLUP_parameters();
1282 ✗ set_GLUP_picking(MESH_CELLS);
1283 ✗ update_buffer_objects_if_needed();
1284 ✗ glupSetCellsShrink(GLUPfloat(shrink_));
1285
1286 ✗ if(mesh_->cells.are_simplices()) {
1287 ✗ draw_tets();
1288 } else {
1289 ✗ draw_hybrid();
1290 }
1291 ✗ glupSetCellsShrink(0.0f);
1292 }
1293
1294 ✗ void MeshGfx::set_mesh(const Mesh* mesh) {
1295 ✗ mesh_ = mesh;
1296 ✗ triangles_and_quads_ = true;
1297 ✗ quads_ = true;
1298 ✗ if(mesh_ != nullptr) {
1299 ✗ for(index_t f: mesh_->facets) {
1300 ✗ index_t nb = mesh_->facets.nb_vertices(f);
1301 ✗ if(nb != 3 && nb != 4) {
1302 ✗ triangles_and_quads_ = false;
1303 }
1304 ✗ if(nb != 4) {
1305 ✗ quads_ = false;
1306 }
1307 }
1308 ✗ for(index_t type=0; type<MESH_NB_CELL_TYPES; ++type) {
1309 ✗ has_cells_[type] = false;
1310 }
1311 ✗ for(index_t cell: mesh_->cells) {
1312 ✗ has_cells_[mesh_->cells.type(cell)] = true;
1313 }
1314 }
1315 ✗ buffer_objects_dirty_ = true;
1316 ✗ attributes_buffer_objects_dirty_ = true;
1317 ✗ vertices_filter_.dirty = true;
1318 ✗ edges_filter_.dirty = true;
1319 ✗ facets_filter_.dirty = true;
1320 ✗ cells_filter_.dirty = true;
1321 ✗ vertices_selection_filter_.dirty = true;
1322 ✗ }
1323
1324 ✗ void MeshGfx::set_GLUP_parameters() {
1325 ✗ if(show_mesh_) {
1326 ✗ glupEnable(GLUP_DRAW_MESH);
1327 } else {
1328 ✗ glupDisable(GLUP_DRAW_MESH);
1329 }
1330 ✗ glupSetColor4fv(GLUP_MESH_COLOR, mesh_color_);
1331 ✗ glupSetMeshWidth(GLUPint(mesh_width_));
1332 ✗ glupSetPointSize(points_size_);
1333 ✗ if(lighting_) {
1334 ✗ glupEnable(GLUP_LIGHTING);
1335 } else {
1336 ✗ glupDisable(GLUP_LIGHTING);
1337 }
1338
1339 ✗ do_animation_ =
1340 ✗ (animate_ && mesh_->vertices.dimension() >= 6);
1341
1342 ✗ ES_profile_ = !strcmp(glupCurrentProfileName(), "GLUPES2");
1343 ✗ }
1344
1345 ✗ void MeshGfx::set_GLUP_picking(MeshElementsFlags what) {
1346 ✗ if(picking_mode_ == MESH_NONE && object_picking_id_ == NO_INDEX) {
1347 ✗ glupDisable(GLUP_PICKING);
1348 } else {
1349 ✗ glupEnable(GLUP_PICKING);
1350 ✗ if(
1351 ✗ (object_picking_id_ == NO_INDEX) &&
1352 ✗ ((picking_mode_ & what) != 0)
1353 ) {
1354 ✗ glupPickingMode(GLUP_PICK_PRIMITIVE);
1355 } else {
1356 ✗ glupPickingMode(GLUP_PICK_CONSTANT);
1357 ✗ glupPickingId(object_picking_id_);
1358 }
1359 }
1360 ✗ }
1361
1362 ✗ void MeshGfx::set_GLUP_vertex_color_from_picking_id(index_t id) {
1363 ✗ GLubyte r = GLubyte( id & 255);
1364 ✗ GLubyte g = GLubyte((id >> 8) & 255);
1365 ✗ GLubyte b = GLubyte((id >> 16) & 255);
1366 ✗ GLubyte a = GLubyte((id >> 24) & 255);
1367 ✗ glupColor4f(
1368 ✗ GLfloat(r)/255.0f,
1369 ✗ GLfloat(g)/255.0f,
1370 ✗ GLfloat(b)/255.0f,
1371 ✗ GLfloat(a)/255.0f
1372 );
1373 ✗ }
1374
1375 ✗ void MeshGfx::bind_vertices_VBO() {
1376 ✗ glBindBuffer(GL_ARRAY_BUFFER, vertices_VBO_);
1377 ✗ glEnableVertexAttribArray(0);
1378
1379 ✗ GLint dim = GLint(std::min(3u, mesh_->vertices.dimension()));
1380
1381 ✗ if(mesh_->vertices.single_precision()) {
1382 GLsizei stride = GLsizei(
1383 ✗ mesh_->vertices.dimension() * sizeof(float)
1384 ✗ );
1385 ✗ glVertexAttribPointer(
1386 0, // Attribute 0
1387 dim, // nb coordinates per vertex
1388 GL_FLOAT, // input coordinates representation
1389 GL_FALSE, // do not normalize
1390 stride, // offset between two consecutive vertices
1391 nullptr // addr. relative to bound VBO
1392 );
1393 } else {
1394 #ifdef GEO_GL_NO_DOUBLES
1395 // Do nothing, because if a double attribute is bound,
1396 // then can_use_array_mode() returns 0, then we switch
1397 // to immediate mode.
1398 #else
1399 GLsizei stride = GLsizei(
1400 ✗ mesh_->vertices.dimension() * sizeof(double)
1401 ✗ );
1402 ✗ glVertexAttribPointer(
1403 0, // Attribute 0
1404 dim, // nb coordinates per vertex
1405 GL_DOUBLE, // input coordinates representation
1406 GL_FALSE, // do not normalize
1407 stride, // offset between two consecutive vertices
1408 nullptr // addr. relative to bound VBO
1409 );
1410 #endif
1411 }
1412 ✗ }
1413
1414
1415 ✗ void MeshGfx::update_buffer_objects_if_needed() {
1416 ✗ if(mesh_->vertices.nb() == 0) {
1417 ✗ return;
1418 }
1419
1420 ✗ if(!buffer_objects_dirty_) {
1421 ✗ update_attribute_buffer_objects_if_needed();
1422 ✗ return;
1423 }
1424
1425 ✗ if(mesh_->vertices.single_precision()) {
1426 ✗ size_t size = mesh_->vertices.nb() *
1427 ✗ mesh_->vertices.dimension() * sizeof(float);
1428 ✗ update_or_check_buffer_object(
1429 ✗ vertices_VBO_, GL_ARRAY_BUFFER,
1430 ✗ size, mesh_->vertices.single_precision_point_ptr(0),
1431 ✗ buffer_objects_dirty_
1432 );
1433 } else {
1434 ✗ size_t size = mesh_->vertices.nb() *
1435 ✗ mesh_->vertices.dimension() * sizeof(double);
1436 ✗ update_or_check_buffer_object(
1437 ✗ vertices_VBO_, GL_ARRAY_BUFFER,
1438 ✗ size, mesh_->vertices.point_ptr(0),
1439 ✗ buffer_objects_dirty_
1440 );
1441 }
1442
1443 ✗ if(vertices_VAO_ == 0) {
1444 ✗ glupGenVertexArrays(1, &vertices_VAO_);
1445 }
1446 ✗ glupBindVertexArray(vertices_VAO_);
1447 ✗ bind_vertices_VBO();
1448 ✗ glupBindVertexArray(0);
1449
1450 ✗ if(mesh_->edges.nb()) {
1451 ✗ update_or_check_buffer_object(
1452 ✗ edge_indices_VBO_, GL_ELEMENT_ARRAY_BUFFER,
1453 ✗ mesh_->edges.nb() * 2 * sizeof(int),
1454 ✗ mesh_->edges.vertex_index_ptr(0),
1455 ✗ buffer_objects_dirty_
1456 );
1457 ✗ if(edges_VAO_ == 0) {
1458 ✗ glupGenVertexArrays(1, &edges_VAO_);
1459 }
1460 ✗ glupBindVertexArray(edges_VAO_);
1461 ✗ bind_vertices_VBO();
1462 ✗ glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, edge_indices_VBO_);
1463 ✗ glupBindVertexArray(0);
1464 }
1465
1466 ✗ if(
1467 ✗ mesh_->facets.nb() != 0 &&
1468 ✗ (mesh_->facets.are_simplices() || triangles_and_quads_)
1469 ) {
1470 ✗ update_or_check_buffer_object(
1471 ✗ facet_indices_VBO_, GL_ELEMENT_ARRAY_BUFFER,
1472 ✗ mesh_->facet_corners.nb() * sizeof(int),
1473 ✗ mesh_->facet_corners.vertex_index_ptr(0),
1474 ✗ buffer_objects_dirty_
1475 );
1476 ✗ if(facets_VAO_ == 0) {
1477 ✗ glupGenVertexArrays(1, &facets_VAO_);
1478 }
1479 ✗ glupBindVertexArray(facets_VAO_);
1480 ✗ bind_vertices_VBO();
1481 ✗ glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, facet_indices_VBO_);
1482 ✗ glupBindVertexArray(0);
1483 }
1484
1485 ✗ if(mesh_->cells.nb() != 0) {
1486 ✗ update_or_check_buffer_object(
1487 ✗ cell_indices_VBO_, GL_ELEMENT_ARRAY_BUFFER,
1488 ✗ mesh_->cell_corners.nb() * sizeof(int),
1489 ✗ mesh_->cell_corners.vertex_index_ptr(0),
1490 ✗ buffer_objects_dirty_
1491 );
1492 ✗ if(cells_VAO_ == 0) {
1493 ✗ glupGenVertexArrays(1, &cells_VAO_);
1494 }
1495 ✗ glupBindVertexArray(cells_VAO_);
1496 ✗ bind_vertices_VBO();
1497 ✗ glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, cell_indices_VBO_);
1498 ✗ glupBindVertexArray(0);
1499 }
1500
1501 ✗ buffer_objects_dirty_ = false;
1502 ✗ update_attribute_buffer_objects_if_needed();
1503 }
1504
1505 ✗ void MeshGfx::set_scalar_attribute(
1506 MeshElementsFlags subelements,
1507 const std::string& name,
1508 double attr_min, double attr_max,
1509 GLuint colormap_texture,
1510 index_t repeat
1511 ) {
1512 ✗ if(
1513 ✗ subelements != attribute_subelements_ ||
1514 ✗ attribute_name_ != name
1515 ) {
1516 ✗ attributes_buffer_objects_dirty_ = true;
1517 }
1518 ✗ attribute_subelements_ = subelements;
1519 ✗ attribute_name_ = name;
1520 ✗ attribute_min_ = attr_min;
1521 ✗ attribute_max_ = attr_max;
1522 ✗ attribute_repeat_ = repeat;
1523 ✗ attribute_texture_ = colormap_texture;
1524 ✗ attribute_dim_ = 1;
1525 ✗ attribute_texture_dim_ = 1;
1526
1527 const MeshSubElementsStore& mesh_subelements =
1528 ✗ mesh_->get_subelements_by_type(attribute_subelements_);
1529
1530 ✗ if(!ReadOnlyScalarAttributeAdapter::is_defined(
1531 ✗ mesh_subelements.attributes(), attribute_name_
1532 )
1533 ) {
1534 ✗ attribute_subelements_ = MESH_NONE;
1535 }
1536
1537 ✗ }
1538
1539 ✗ void MeshGfx::set_texturing(
1540 MeshElementsFlags subelements,
1541 const std::string& name,
1542 GLuint texture,
1543 index_t texture_dim,
1544 index_t repeat
1545 ) {
1546 ✗ if(
1547 ✗ subelements != attribute_subelements_ ||
1548 ✗ attribute_name_ != name
1549 ) {
1550 ✗ attributes_buffer_objects_dirty_ = true;
1551 }
1552 ✗ attribute_subelements_ = subelements;
1553 ✗ attribute_name_ = name;
1554 ✗ attribute_min_ = 0.0;
1555 ✗ attribute_max_ = 1.0;
1556 ✗ attribute_repeat_ = repeat;
1557 ✗ attribute_texture_ = texture;
1558 ✗ attribute_texture_dim_ = texture_dim;
1559
1560 const MeshSubElementsStore& mesh_subelements =
1561 ✗ mesh_->get_subelements_by_type(attribute_subelements_);
1562
1563 ✗ attribute_dim_ = 0;
1564 ✗ FOR(i,3) {
1565 ✗ tex_coord_attribute_[i].bind_if_is_defined(
1566 ✗ mesh_subelements.attributes(),
1567 ✗ attribute_name_ + "[" + String::to_string(i) + "]"
1568 );
1569 ✗ if(tex_coord_attribute_[i].is_bound()) {
1570 ✗ attribute_dim_ = i+1;
1571 ✗ tex_coord_attribute_[i].unbind();
1572 }
1573 }
1574 ✗ if(attribute_dim_ == 0) {
1575 ✗ attribute_subelements_ = MESH_NONE;
1576 }
1577 ✗ }
1578
1579 ✗ void MeshGfx::update_attribute_buffer_objects_if_needed() {
1580 ✗ if(mesh_->vertices.nb() == 0) {
1581 ✗ return;
1582 }
1583
1584 ✗ if(!attributes_buffer_objects_dirty_) {
1585 ✗ return;
1586 }
1587
1588 ✗ long_vector_attribute_ = false;
1589
1590 ✗ if(attribute_subelements_ == MESH_VERTICES) {
1591 ✗ scalar_attribute_.bind_if_is_defined(
1592 ✗ mesh_->vertices.attributes(), attribute_name_
1593 );
1594 ✗ if(scalar_attribute_.attribute_store()->dimension() > 4) {
1595 ✗ scalar_attribute_.unbind();
1596 ✗ long_vector_attribute_ = true;
1597 }
1598 }
1599
1600 ✗ if(scalar_attribute_.is_bound()) {
1601 size_t element_size =
1602 ✗ scalar_attribute_.attribute_store()->element_size();
1603 GLint dimension =
1604 ✗ GLint(scalar_attribute_.attribute_store()->dimension());
1605 // nb_items should be scalar_attribute_.size(), using capacity()
1606 // instead seemingly fixes a display bug (zero attribute on last
1607 // vertex). To be further investigated...
1608 ✗ index_t nb_items = scalar_attribute_.size();
1609 // ... or ... scalar_attribute_.attribute_store()->capacity();
1610 ✗ const void* data = scalar_attribute_.attribute_store()->data();
1611
1612 ✗ update_or_check_buffer_object(
1613 ✗ vertices_attribute_VBO_, GL_ARRAY_BUFFER,
1614 ✗ element_size*index_t(dimension)*nb_items,
1615 data,
1616 ✗ attributes_buffer_objects_dirty_
1617 );
1618
1619 ✗ bind_attribute_buffer_object(vertices_VAO_);
1620 ✗ bind_attribute_buffer_object(edges_VAO_);
1621 ✗ bind_attribute_buffer_object(facets_VAO_);
1622 ✗ bind_attribute_buffer_object(cells_VAO_);
1623
1624 ✗ scalar_attribute_.unbind();
1625 } else {
1626 ✗ unbind_attribute_buffer_object(vertices_VAO_);
1627 ✗ unbind_attribute_buffer_object(edges_VAO_);
1628 ✗ unbind_attribute_buffer_object(facets_VAO_);
1629 ✗ unbind_attribute_buffer_object(cells_VAO_);
1630 }
1631 ✗ attributes_buffer_objects_dirty_ = false;
1632 }
1633
1634 ✗ void MeshGfx::bind_attribute_buffer_object(GLuint VAO) {
1635 ✗ if(VAO == 0) {
1636 ✗ return;
1637 }
1638 size_t element_size =
1639 ✗ scalar_attribute_.attribute_store()->element_size();
1640 GLint dimension =
1641 ✗ GLint(scalar_attribute_.attribute_store()->dimension());
1642
1643 ✗ if(
1644 ✗ scalar_attribute_.element_type() ==
1645 ReadOnlyScalarAttributeAdapter::ET_VEC2) {
1646 ✗ dimension *= 2;
1647 ✗ element_size /= 2;
1648 ✗ } else if(scalar_attribute_.element_type() ==
1649 ReadOnlyScalarAttributeAdapter::ET_VEC3) {
1650 ✗ dimension *= 3;
1651 ✗ element_size /= 3;
1652 }
1653
1654 ✗ GLsizei stride = GLsizei(element_size) * dimension;
1655
1656 const GLvoid* offset = (const GLvoid*)(
1657 ✗ element_size * index_t(scalar_attribute_.element_index())
1658 ✗ );
1659
1660 ✗ glupBindVertexArray(VAO);
1661 ✗ glBindBuffer(GL_ARRAY_BUFFER, vertices_attribute_VBO_);
1662 ✗ glEnableVertexAttribArray(2); // 2 = tex coords
1663
1664 ✗ switch(scalar_attribute_.element_type()) {
1665 ✗ case ReadOnlyScalarAttributeAdapter::ET_UINT8:
1666 ✗ glVertexAttribPointer(
1667 2, dimension, GL_UNSIGNED_BYTE, GL_FALSE, stride, offset
1668 );
1669 ✗ break;
1670 ✗ case ReadOnlyScalarAttributeAdapter::ET_INT8:
1671 ✗ glVertexAttribPointer(
1672 2, dimension, GL_BYTE, GL_FALSE, stride, offset
1673 );
1674 ✗ break;
1675 ✗ case ReadOnlyScalarAttributeAdapter::ET_UINT32:
1676 ✗ glVertexAttribPointer(
1677 2, dimension, GL_UNSIGNED_INT, GL_FALSE, stride, offset
1678 );
1679 ✗ break;
1680 ✗ case ReadOnlyScalarAttributeAdapter::ET_INT32:
1681 ✗ glVertexAttribPointer(
1682 2, dimension, GL_INT, GL_FALSE, stride, offset
1683 );
1684 ✗ break;
1685 ✗ case ReadOnlyScalarAttributeAdapter::ET_FLOAT32:
1686 ✗ glVertexAttribPointer(
1687 2, dimension, GL_FLOAT, GL_FALSE, stride, offset
1688 );
1689 ✗ break;
1690 ✗ case ReadOnlyScalarAttributeAdapter::ET_FLOAT64:
1691 case ReadOnlyScalarAttributeAdapter::ET_VEC2:
1692 case ReadOnlyScalarAttributeAdapter::ET_VEC3:
1693 #ifdef GEO_GL_NO_DOUBLES
1694 // Do nothing, because if a double attribute is bound,
1695 // then can_use_array_mode() returns 0, then we switch
1696 // to immediate mode.
1697 #else
1698 ✗ glVertexAttribPointer(
1699 2, dimension, GL_DOUBLE, GL_FALSE, stride, offset
1700 );
1701 #endif
1702 ✗ break;
1703 ✗ case ReadOnlyScalarAttributeAdapter::ET_NONE:
1704 ✗ geo_assert_not_reached;
1705 }
1706 ✗ glupBindVertexArray(0);
1707 ✗ glBindBuffer(GL_ARRAY_BUFFER, 0);
1708 }
1709
1710 ✗ void MeshGfx::unbind_attribute_buffer_object(GLuint VAO) {
1711 ✗ if(VAO == 0) {
1712 ✗ return;
1713 }
1714 ✗ glupBindVertexArray(VAO);
1715 ✗ glDisableVertexAttribArray(2); // 2 = tex coords
1716 ✗ glupBindVertexArray(0);
1717 ✗ glBindBuffer(GL_ARRAY_BUFFER, 0);
1718 }
1719
1720 ✗ void MeshGfx::begin_attributes() {
1721 ✗ if(picking_mode_ != MESH_NONE) {
1722 ✗ return;
1723 }
1724 ✗ if(attribute_subelements_ == MESH_NONE) {
1725 ✗ return;
1726 }
1727 const MeshSubElementsStore& subelements =
1728 ✗ mesh_->get_subelements_by_type(attribute_subelements_);
1729
1730 ✗ if(attribute_dim_ == 1) {
1731 ✗ scalar_attribute_.bind_if_is_defined(
1732 ✗ subelements.attributes(), attribute_name_
1733 );
1734 ✗ if(!scalar_attribute_.is_bound()) {
1735 ✗ return;
1736 }
1737 } else {
1738 ✗ FOR(i,3) {
1739 ✗ tex_coord_attribute_[i].bind_if_is_defined(
1740 ✗ subelements.attributes(),
1741 ✗ attribute_name_+"["+String::to_string(i)+"]"
1742 );
1743 }
1744 ✗ if(!tex_coord_attribute_[0].is_bound()) {
1745 ✗ return;
1746 }
1747 }
1748
1749 ✗ glupEnable(GLUP_TEXTURING);
1750 ✗ glupTextureMode(GLUP_TEXTURE_REPLACE);
1751
1752 ✗ switch(attribute_texture_dim_) {
1753 ✗ case 1:
1754 ✗ glupTextureType(GLUP_TEXTURE_1D);
1755 ✗ glActiveTexture(GL_TEXTURE0 + GLUP_TEXTURE_1D_UNIT);
1756 ✗ glBindTexture(
1757 GLUP_TEXTURE_1D_TARGET, attribute_texture_
1758 );
1759 ✗ break;
1760 ✗ case 2:
1761 ✗ glupTextureType(GLUP_TEXTURE_2D);
1762 ✗ glActiveTexture(GL_TEXTURE0 + GLUP_TEXTURE_2D_UNIT);
1763 ✗ glBindTexture(
1764 GLUP_TEXTURE_2D_TARGET, attribute_texture_
1765 );
1766 ✗ break;
1767 ✗ case 3:
1768 ✗ glupTextureType(GLUP_TEXTURE_3D);
1769 ✗ glActiveTexture(GL_TEXTURE0 + GLUP_TEXTURE_3D_UNIT);
1770 ✗ glBindTexture(
1771 GLUP_TEXTURE_3D_TARGET, attribute_texture_
1772 );
1773 ✗ break;
1774 }
1775
1776 ✗ if(attribute_dim_ == 1) {
1777 // Setup a texture matrix that rescales attribute range
1778 // from [attribute_min_,attribute_max_] to [0,1]
1779 ✗ glupMapTexCoords1d(
1780 attribute_min_, attribute_max_, attribute_repeat_
1781 );
1782 } else {
1783 ✗ glupMatrixMode(GLUP_TEXTURE_MATRIX);
1784 ✗ glupLoadIdentity();
1785 ✗ if(attribute_repeat_ != 0) {
1786 ✗ glupScalef(
1787 ✗ float(attribute_repeat_),
1788 ✗ float(attribute_repeat_),
1789 ✗ float(attribute_repeat_)
1790 );
1791 }
1792 ✗ glupMatrixMode(GLUP_MODELVIEW_MATRIX);
1793 }
1794
1795 ✗ if(!glupIsEnabled(GLUP_NORMAL_MAPPING)) {
1796 ✗ glupSetColor3f(GLUP_FRONT_AND_BACK_COLOR, 1.0f, 1.0f, 1.0f);
1797 }
1798 }
1799
1800 ✗ void MeshGfx::end_attributes() {
1801 ✗ if(scalar_attribute_.is_bound()) {
1802 ✗ glupDisable(GLUP_TEXTURING);
1803 ✗ scalar_attribute_.unbind();
1804 }
1805 ✗ FOR(i,3) {
1806 ✗ if(tex_coord_attribute_[i].is_bound()) {
1807 ✗ if(i==0) {
1808 ✗ glupDisable(GLUP_TEXTURING);
1809 }
1810 ✗ tex_coord_attribute_[i].unbind();
1811 }
1812 }
1813 ✗ glupMatrixMode(GLUP_TEXTURE_MATRIX);
1814 ✗ glupLoadIdentity();
1815 ✗ glupMatrixMode(GLUP_MODELVIEW_MATRIX);
1816 ✗ }
1817
1818 /*********************************************/
1819
1820 ✗ void MeshGfx::set_filter(
1821 MeshElementsFlags subelements,
1822 const std::string& name
1823 ) {
1824 ✗ switch(subelements) {
1825 ✗ case MESH_VERTICES:
1826 ✗ vertices_filter_.attribute_name = name;
1827 ✗ vertices_filter_.dirty = true;
1828 ✗ if(name == "") {
1829 ✗ vertices_filter_.deallocate();
1830 }
1831 ✗ break;
1832 ✗ case MESH_EDGES:
1833 ✗ edges_filter_.attribute_name = name;
1834 ✗ edges_filter_.dirty = true;
1835 ✗ if(name == "") {
1836 ✗ edges_filter_.deallocate();
1837 }
1838 ✗ break;
1839 ✗ case MESH_FACETS:
1840 ✗ facets_filter_.attribute_name = name;
1841 ✗ facets_filter_.dirty = true;
1842 ✗ if(name == "") {
1843 ✗ facets_filter_.deallocate();
1844 }
1845 ✗ break;
1846 ✗ case MESH_CELLS:
1847 ✗ cells_filter_.attribute_name = name;
1848 ✗ cells_filter_.dirty = true;
1849 ✗ if(name == "") {
1850 ✗ cells_filter_.deallocate();
1851 }
1852 ✗ break;
1853 ✗ case MESH_ALL_ELEMENTS:
1854 ✗ set_filter(MESH_VERTICES, name);
1855 ✗ set_filter(MESH_FACETS, name);
1856 ✗ set_filter(MESH_CELLS, name);
1857 ✗ break;
1858 ✗ case MESH_NONE:
1859 case MESH_FACET_CORNERS:
1860 case MESH_CELL_CORNERS:
1861 case MESH_CELL_FACETS:
1862 case MESH_ALL_SUBELEMENTS:
1863 ✗ break;
1864 }
1865 ✗ }
1866
1867 ✗ void MeshGfx::unset_filters() {
1868 ✗ set_filter(MESH_ALL_ELEMENTS,"");
1869 ✗ }
1870
1871 ✗ bool MeshGfx::hw_filtering_supported() const {
1872
1873 // hardware primitive filtering is not supported by GLUPES2
1874 ✗ bool is_GLUPES2 = !strcmp(
1875 glupCurrentProfileName(),"GLUPES2"
1876 ✗ );
1877
1878 // It is also not supported by GLUP150 (but it should be).
1879 // It seems that VERTEX_GATHER mode does not work
1880 // with GLUP primitive filtering. TODO: debug it !
1881
1882 ✗ bool is_GLUP150 = !strcmp(
1883 glupCurrentProfileName(),"GLUP150"
1884 ✗ );
1885
1886 ✗ return !is_GLUPES2 && !is_GLUP150;
1887 }
1888
1889 /***********************************************************************/
1890
1891 ✗ MeshGfx::Filter::Filter() {
1892 ✗ VBO = 0;
1893 ✗ texture = 0;
1894 ✗ dirty = true;
1895 ✗ }
1896
1897 ✗ MeshGfx::Filter::~Filter() {
1898 ✗ deallocate();
1899 ✗ }
1900
1901 ✗ void MeshGfx::Filter::deallocate() {
1902 ✗ if(VBO != 0) {
1903 ✗ glDeleteBuffers(1,&VBO);
1904 ✗ VBO = 0;
1905 }
1906 ✗ if(texture != 0) {
1907 ✗ glDeleteTextures(1,&texture);
1908 ✗ texture = 0;
1909 }
1910 ✗ dirty = true;
1911 ✗ }
1912
1913 ✗ bool MeshGfx::Filter::begin(
1914 AttributesManager& attributes_manager,
1915 bool hw_primitive_filtering
1916 ) {
1917 ✗ if(attribute_name == "") {
1918 ✗ return false;
1919 }
1920 ✗ attribute.bind_if_is_defined(attributes_manager, attribute_name);
1921 ✗ if(!attribute.is_bound()) {
1922 ✗ return false;
1923 }
1924
1925 #if defined(GEO_OS_EMSCRIPTEN) || defined(GEO_OS_ANDROID)
1926 geo_argused(hw_primitive_filtering); // not implemented yet
1927 #else
1928 ✗ if(hw_primitive_filtering) {
1929 ✗ if(dirty) {
1930 ✗ update_or_check_buffer_object(
1931 ✗ VBO, GL_ARRAY_BUFFER,
1932 ✗ attribute.size(),
1933 ✗ &(attribute[0]),
1934 ✗ dirty
1935 );
1936 ✗ if(texture == 0) {
1937 ✗ glGenTextures(1, &texture);
1938 }
1939 ✗ glActiveTexture(
1940 GL_TEXTURE0 + GLUP_TEXTURE_PRIMITIVE_FILTERING_UNIT
1941 );
1942 ✗ glBindTexture(GL_TEXTURE_BUFFER, texture);
1943 ✗ glTexBuffer(GL_TEXTURE_BUFFER, GL_R8, VBO);
1944 ✗ glBindTexture(GL_TEXTURE_BUFFER, 0);
1945 ✗ dirty = false;
1946 }
1947 ✗ glActiveTexture(
1948 GL_TEXTURE0 + GLUP_TEXTURE_PRIMITIVE_FILTERING_UNIT
1949 );
1950 ✗ glBindTexture(GL_TEXTURE_BUFFER, texture);
1951 ✗ glupEnable(GLUP_PRIMITIVE_FILTERING);
1952 }
1953 #endif
1954 ✗ return true;
1955 }
1956
1957 ✗ void MeshGfx::Filter::end() {
1958 #if defined(GEO_OS_EMSCRIPTEN) || defined(GEO_OS_ANDROID)
1959 // not implemented yet
1960 #else
1961 ✗ if(glupIsEnabled(GLUP_PRIMITIVE_FILTERING)) {
1962 ✗ glupDisable(GLUP_PRIMITIVE_FILTERING);
1963 ✗ glActiveTexture(
1964 GL_TEXTURE0 + GLUP_TEXTURE_PRIMITIVE_FILTERING_UNIT
1965 );
1966 ✗ glBindTexture(GL_TEXTURE_BUFFER, 0);
1967 ✗ glActiveTexture(GL_TEXTURE0);
1968 }
1969 #endif
1970 ✗ if(attribute.is_bound()) {
1971 ✗ attribute.unbind();
1972 }
1973 ✗ }
1974
1975
1976 }
1977