Made minor revisions (no functional changes).
[blender.git] / source / blender / editors / space_view3d / view3d_draw.c
1 /*
2  * ***** BEGIN GPL LICENSE BLOCK *****
3  *
4  * This program is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU General Public License
6  * as published by the Free Software Foundation; either version 2
7  * of the License, or (at your option) any later version. 
8  *
9  * This program is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12  * GNU General Public License for more details.
13  *
14  * You should have received a copy of the GNU General Public License
15  * along with this program; if not, write to the Free Software Foundation,
16  * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
17  *
18  * The Original Code is Copyright (C) 2008 Blender Foundation.
19  * All rights reserved.
20  *
21  * 
22  * Contributor(s): Blender Foundation
23  *
24  * ***** END GPL LICENSE BLOCK *****
25  */
26
27 /** \file blender/editors/space_view3d/view3d_draw.c
28  *  \ingroup spview3d
29  */
30
31
32 #include <string.h>
33 #include <stdio.h>
34 #include <math.h>
35
36 #include "DNA_armature_types.h"
37 #include "DNA_camera_types.h"
38 #include "DNA_customdata_types.h"
39 #include "DNA_object_types.h"
40 #include "DNA_group_types.h"
41 #include "DNA_key_types.h"
42 #include "DNA_lamp_types.h"
43 #include "DNA_scene_types.h"
44 #include "DNA_world_types.h"
45
46 #include "MEM_guardedalloc.h"
47
48 #include "BLI_blenlib.h"
49 #include "BLI_math.h"
50 #include "BLI_rand.h"
51 #include "BLI_utildefines.h"
52
53 #include "BKE_anim.h"
54 #include "BKE_camera.h"
55 #include "BKE_context.h"
56 #include "BKE_customdata.h"
57 #include "BKE_image.h"
58 #include "BKE_key.h"
59 #include "BKE_object.h"
60 #include "BKE_global.h"
61 #include "BKE_paint.h"
62 #include "BKE_scene.h"
63 #include "BKE_screen.h"
64 #include "BKE_unit.h"
65 #include "BKE_movieclip.h"
66
67 #include "RE_engine.h"
68 #include "RE_pipeline.h"        // make_stars
69
70 #include "IMB_imbuf_types.h"
71 #include "IMB_imbuf.h"
72
73 #include "BIF_gl.h"
74 #include "BIF_glutil.h"
75
76 #include "WM_api.h"
77 #include "BLF_api.h"
78
79 #include "ED_armature.h"
80 #include "ED_keyframing.h"
81 #include "ED_gpencil.h"
82 #include "ED_screen.h"
83 #include "ED_space_api.h"
84 #include "ED_screen_types.h"
85 #include "ED_transform.h"
86
87 #include "UI_interface.h"
88 #include "UI_interface_icons.h"
89 #include "UI_resources.h"
90
91 #include "GPU_draw.h"
92 #include "GPU_material.h"
93 #include "GPU_extensions.h"
94
95 #include "view3d_intern.h"      // own include
96
97
98
99 static void star_stuff_init_func(void)
100 {
101         cpack(-1);
102         glPointSize(1.0);
103         glBegin(GL_POINTS);
104 }
105 static void star_stuff_vertex_func(float* i)
106 {
107         glVertex3fv(i);
108 }
109 static void star_stuff_term_func(void)
110 {
111         glEnd();
112 }
113
114 void circf(float x, float y, float rad)
115 {
116         GLUquadricObj *qobj = gluNewQuadric(); 
117         
118         gluQuadricDrawStyle(qobj, GLU_FILL); 
119         
120         glPushMatrix(); 
121         
122         glTranslatef(x,  y, 0.); 
123         
124         gluDisk( qobj, 0.0,  rad, 32, 1); 
125         
126         glPopMatrix(); 
127         
128         gluDeleteQuadric(qobj);
129 }
130
131 void circ(float x, float y, float rad)
132 {
133         GLUquadricObj *qobj = gluNewQuadric(); 
134         
135         gluQuadricDrawStyle(qobj, GLU_SILHOUETTE); 
136         
137         glPushMatrix(); 
138         
139         glTranslatef(x,  y, 0.); 
140         
141         gluDisk( qobj, 0.0,  rad, 32, 1); 
142         
143         glPopMatrix(); 
144         
145         gluDeleteQuadric(qobj);
146 }
147
148
149 /* ********* custom clipping *********** */
150
151 static void view3d_draw_clipping(RegionView3D *rv3d)
152 {
153         BoundBox *bb= rv3d->clipbb;
154
155         if(bb) {
156                 static unsigned int clipping_index[6][4]= {{0, 1, 2, 3},
157                                                            {0, 4, 5, 1},
158                                                            {4, 7, 6, 5},
159                                                            {7, 3, 2, 6},
160                                                            {1, 5, 6, 2},
161                                                            {7, 4, 0, 3}};
162
163                 UI_ThemeColorShade(TH_BACK, -8);
164
165                 glEnableClientState(GL_VERTEX_ARRAY);
166                 glVertexPointer(3, GL_FLOAT, 0, bb->vec);
167                 glDrawElements(GL_QUADS, sizeof(clipping_index)/sizeof(unsigned int), GL_UNSIGNED_INT, clipping_index);
168                 glDisableClientState(GL_VERTEX_ARRAY);
169
170         }
171 }
172
173 void view3d_set_clipping(RegionView3D *rv3d)
174 {
175         double plane[4];
176         int a, tot=4;
177         
178         if(rv3d->viewlock) tot= 6;
179         
180         for(a=0; a<tot; a++) {
181                 QUATCOPY(plane, rv3d->clip[a]);
182                 glClipPlane(GL_CLIP_PLANE0+a, plane);
183                 glEnable(GL_CLIP_PLANE0+a);
184         }
185 }
186
187 void view3d_clr_clipping(void)
188 {
189         int a;
190         
191         for(a=0; a<6; a++) {
192                 glDisable(GL_CLIP_PLANE0+a);
193         }
194 }
195
196 static int test_clipping(const float vec[3], float clip[][4])
197 {
198         float view[3];
199         copy_v3_v3(view, vec);
200
201         if(0.0f < clip[0][3] + dot_v3v3(view, clip[0]))
202                 if(0.0f < clip[1][3] + dot_v3v3(view, clip[1]))
203                         if(0.0f < clip[2][3] + dot_v3v3(view, clip[2]))
204                                 if(0.0f < clip[3][3] + dot_v3v3(view, clip[3]))
205                                         return 0;
206
207         return 1;
208 }
209
210 /* for 'local' ED_view3d_local_clipping must run first
211  * then all comparisons can be done in localspace */
212 int ED_view3d_test_clipping(RegionView3D *rv3d, const float vec[3], const int local)
213 {
214         return test_clipping(vec, local ? rv3d->clip_local : rv3d->clip);
215 }
216
217 /* ********* end custom clipping *********** */
218
219
220 static void drawgrid_draw(ARegion *ar, float wx, float wy, float x, float y, float dx)
221 {       
222         float verts[2][2];
223
224         x+= (wx); 
225         y+= (wy);
226
227         /* set fixed 'Y' */
228         verts[0][1]= 0.0f;
229         verts[1][1]= (float)ar->winy;
230
231         /* iter over 'X' */
232         verts[0][0] = verts[1][0] = x-dx*floorf(x/dx);
233         glEnableClientState(GL_VERTEX_ARRAY);
234         glVertexPointer(2, GL_FLOAT, 0, verts);
235
236         while(verts[0][0] < ar->winx) {
237                 glDrawArrays(GL_LINES, 0, 2);
238                 verts[0][0] = verts[1][0] = verts[0][0] + dx;
239         }
240
241         /* set fixed 'X' */
242         verts[0][0]= 0.0f;
243         verts[1][0]= (float)ar->winx;
244
245         /* iter over 'Y' */
246         verts[0][1]= verts[1][1]= y-dx*floorf(y/dx);
247         while(verts[0][1] < ar->winy) {
248                 glDrawArrays(GL_LINES, 0, 2);
249                 verts[0][1] = verts[1][1] = verts[0][1] + dx;
250         }
251
252         glDisableClientState(GL_VERTEX_ARRAY);
253 }
254
255 #define GRID_MIN_PX 6.0f
256
257 static void drawgrid(UnitSettings *unit, ARegion *ar, View3D *v3d, const char **grid_unit)
258 {
259         /* extern short bgpicmode; */
260         RegionView3D *rv3d= ar->regiondata;
261         float wx, wy, x, y, fw, fx, fy, dx;
262         float vec4[4];
263         unsigned char col[3], col2[3];
264
265         vec4[0]=vec4[1]=vec4[2]=0.0; 
266         vec4[3]= 1.0;
267         mul_m4_v4(rv3d->persmat, vec4);
268         fx= vec4[0]; 
269         fy= vec4[1]; 
270         fw= vec4[3];
271
272         wx= (ar->winx/2.0);     /* because of rounding errors, grid at wrong location */
273         wy= (ar->winy/2.0);
274
275         x= (wx)*fx/fw;
276         y= (wy)*fy/fw;
277
278         vec4[0]=vec4[1]= v3d->grid;
279
280         vec4[2]= 0.0;
281         vec4[3]= 1.0;
282         mul_m4_v4(rv3d->persmat, vec4);
283         fx= vec4[0]; 
284         fy= vec4[1]; 
285         fw= vec4[3];
286
287         dx= fabs(x-(wx)*fx/fw);
288         if(dx==0) dx= fabs(y-(wy)*fy/fw);
289         
290         glDepthMask(0);         // disable write in zbuffer
291
292         /* check zoom out */
293         UI_ThemeColor(TH_GRID);
294         
295         if(unit->system) {
296                 /* Use GRID_MIN_PX*2 for units because very very small grid
297                  * items are less useful when dealing with units */
298                 void *usys;
299                 int len, i;
300                 float dx_scalar;
301                 float blend_fac;
302
303                 bUnit_GetSystem(&usys, &len, unit->system, B_UNIT_LENGTH);
304
305                 if(usys) {
306                         i= len;
307                         while(i--) {
308                                 float scalar= bUnit_GetScaler(usys, i);
309
310                                 dx_scalar = dx * scalar / unit->scale_length;
311                                 if (dx_scalar < (GRID_MIN_PX*2))
312                                         continue;
313
314                                 /* Store the smallest drawn grid size units name so users know how big each grid cell is */
315                                 if(*grid_unit==NULL) {
316                                         *grid_unit= bUnit_GetNameDisplay(usys, i);
317                                         rv3d->gridview= (scalar * v3d->grid) / unit->scale_length;
318                                 }
319                                 blend_fac= 1-((GRID_MIN_PX*2)/dx_scalar);
320
321                                 /* tweak to have the fade a bit nicer */
322                                 blend_fac= (blend_fac * blend_fac) * 2.0f;
323                                 CLAMP(blend_fac, 0.3f, 1.0f);
324
325
326                                 UI_ThemeColorBlend(TH_BACK, TH_GRID, blend_fac);
327
328                                 drawgrid_draw(ar, wx, wy, x, y, dx_scalar);
329                         }
330                 }
331         }
332         else {
333                 short sublines = v3d->gridsubdiv;
334
335                 if(dx<GRID_MIN_PX) {
336                         rv3d->gridview*= sublines;
337                         dx*= sublines;
338                         
339                         if(dx<GRID_MIN_PX) {
340                                 rv3d->gridview*= sublines;
341                                 dx*= sublines;
342
343                                 if(dx<GRID_MIN_PX) {
344                                         rv3d->gridview*= sublines;
345                                         dx*=sublines;
346                                         if(dx<GRID_MIN_PX);
347                                         else {
348                                                 UI_ThemeColor(TH_GRID);
349                                                 drawgrid_draw(ar, wx, wy, x, y, dx);
350                                         }
351                                 }
352                                 else {  // start blending out
353                                         UI_ThemeColorBlend(TH_BACK, TH_GRID, dx/(GRID_MIN_PX*6));
354                                         drawgrid_draw(ar, wx, wy, x, y, dx);
355
356                                         UI_ThemeColor(TH_GRID);
357                                         drawgrid_draw(ar, wx, wy, x, y, sublines*dx);
358                                 }
359                         }
360                         else {  // start blending out (GRID_MIN_PX < dx < (GRID_MIN_PX*10))
361                                 UI_ThemeColorBlend(TH_BACK, TH_GRID, dx/(GRID_MIN_PX*6));
362                                 drawgrid_draw(ar, wx, wy, x, y, dx);
363
364                                 UI_ThemeColor(TH_GRID);
365                                 drawgrid_draw(ar, wx, wy, x, y, sublines*dx);
366                         }
367                 }
368                 else {
369                         if(dx>(GRID_MIN_PX*10)) {               // start blending in
370                                 rv3d->gridview/= sublines;
371                                 dx/= sublines;
372                                 if(dx>(GRID_MIN_PX*10)) {               // start blending in
373                                         rv3d->gridview/= sublines;
374                                         dx/= sublines;
375                                         if(dx>(GRID_MIN_PX*10)) {
376                                                 UI_ThemeColor(TH_GRID);
377                                                 drawgrid_draw(ar, wx, wy, x, y, dx);
378                                         }
379                                         else {
380                                                 UI_ThemeColorBlend(TH_BACK, TH_GRID, dx/(GRID_MIN_PX*6));
381                                                 drawgrid_draw(ar, wx, wy, x, y, dx);
382                                                 UI_ThemeColor(TH_GRID);
383                                                 drawgrid_draw(ar, wx, wy, x, y, dx*sublines);
384                                         }
385                                 }
386                                 else {
387                                         UI_ThemeColorBlend(TH_BACK, TH_GRID, dx/(GRID_MIN_PX*6));
388                                         drawgrid_draw(ar, wx, wy, x, y, dx);
389                                         UI_ThemeColor(TH_GRID);
390                                         drawgrid_draw(ar, wx, wy, x, y, dx*sublines);
391                                 }
392                         }
393                         else {
394                                 UI_ThemeColorBlend(TH_BACK, TH_GRID, dx/(GRID_MIN_PX*6));
395                                 drawgrid_draw(ar, wx, wy, x, y, dx);
396                                 UI_ThemeColor(TH_GRID);
397                                 drawgrid_draw(ar, wx, wy, x, y, dx*sublines);
398                         }
399                 }
400         }
401
402
403         x+= (wx); 
404         y+= (wy);
405         UI_GetThemeColor3ubv(TH_GRID, col);
406
407         setlinestyle(0);
408         
409         /* center cross */
410         /* horizontal line */
411         if( ELEM(rv3d->view, RV3D_VIEW_RIGHT, RV3D_VIEW_LEFT)) 
412                 UI_make_axis_color(col, col2, 'Y');
413         else UI_make_axis_color(col, col2, 'X');
414         glColor3ubv(col2);
415         
416         fdrawline(0.0,  y,  (float)ar->winx,  y); 
417         
418         /* vertical line */
419         if( ELEM(rv3d->view, RV3D_VIEW_TOP, RV3D_VIEW_BOTTOM)) 
420                 UI_make_axis_color(col, col2, 'Y');
421         else UI_make_axis_color(col, col2, 'Z');
422         glColor3ubv(col2);
423
424         fdrawline(x, 0.0, x, (float)ar->winy); 
425
426         glDepthMask(1);         // enable write in zbuffer
427 }
428 #undef GRID_MIN_PX
429
430 static void drawfloor(Scene *scene, View3D *v3d, const char **grid_unit)
431 {
432         float grid, grid_scale;
433         unsigned char col_grid[3];
434         const int gridlines= v3d->gridlines/2;
435
436         if(v3d->gridlines<3) return;
437         
438         grid_scale= v3d->grid;
439         /* use 'grid_scale' instead of 'v3d->grid' from now on */
440
441         /* apply units */
442         if(scene->unit.system) {
443                 void *usys;
444                 int len;
445
446                 bUnit_GetSystem(&usys, &len, scene->unit.system, B_UNIT_LENGTH);
447
448                 if(usys) {
449                         int i= bUnit_GetBaseUnit(usys);
450                         *grid_unit= bUnit_GetNameDisplay(usys, i);
451                         grid_scale = (grid_scale * (float)bUnit_GetScaler(usys, i)) / scene->unit.scale_length;
452                 }
453         }
454
455         grid= gridlines * grid_scale;
456
457         if(v3d->zbuf && scene->obedit) glDepthMask(0);  // for zbuffer-select
458
459         UI_GetThemeColor3ubv(TH_GRID, col_grid);
460
461         /* draw the Y axis and/or grid lines */
462         if(v3d->gridflag & V3D_SHOW_FLOOR) {
463                 float vert[4][3]= {{0.0f}};
464                 unsigned char col_bg[3];
465                 unsigned char col_grid_emphasise[3], col_grid_light[3];
466                 int a;
467                 int prev_emphasise= -1;
468
469                 UI_GetThemeColor3ubv(TH_BACK, col_bg);
470
471                 /* emphasise division lines lighter instead of darker, if background is darker than grid */
472                 UI_GetColorPtrShade3ubv(col_grid, col_grid_light, 10);
473                 UI_GetColorPtrShade3ubv(col_grid, col_grid_emphasise,
474                                         (((col_grid[0]+col_grid[1]+col_grid[2])+30) > (col_bg[0]+col_bg[1]+col_bg[2])) ? 20 : -10);
475
476                 /* set fixed axis */
477                 vert[0][0]= vert[2][1]= grid;
478                 vert[1][0]= vert[3][1]= -grid;
479
480                 glEnableClientState(GL_VERTEX_ARRAY);
481                 glVertexPointer(3, GL_FLOAT, 0, vert);
482
483                 for(a= -gridlines;a<=gridlines;a++) {
484                         const float line= a * grid_scale;
485                         const int is_emphasise= (a % 10) == 0;
486
487                         if(is_emphasise != prev_emphasise) {
488                                 glColor3ubv(is_emphasise ? col_grid_emphasise : col_grid_light);
489                                 prev_emphasise= is_emphasise;
490                         }
491
492                         /* set variable axis */
493                         vert[0][1]= vert[1][1]=
494                         vert[2][0]= vert[3][0]= line;
495
496                         glDrawArrays(GL_LINES, 0, 4);
497                 }
498
499                 glDisableClientState(GL_VERTEX_ARRAY);
500
501                 GPU_print_error("sdsd");
502         }
503         
504         /* draw the Z axis line */      
505         /* check for the 'show Z axis' preference */
506         if (v3d->gridflag & (V3D_SHOW_X | V3D_SHOW_Y | V3D_SHOW_Z)) {
507                 int axis;
508                 for(axis= 0; axis < 3; axis++)
509                 if (v3d->gridflag & (V3D_SHOW_X << axis)) {
510                         float vert[3];
511                         unsigned char tcol[3];
512
513                         UI_make_axis_color(col_grid, tcol, 'X' + axis);
514                         glColor3ubv(tcol);
515
516                         glBegin(GL_LINE_STRIP);
517                         zero_v3(vert);
518                         vert[axis]= grid;
519                         glVertex3fv(vert );
520                         vert[axis]= -grid;
521                         glVertex3fv(vert);
522                         glEnd();
523                 }
524         }
525
526
527
528
529         if(v3d->zbuf && scene->obedit) glDepthMask(1);  
530         
531 }
532
533 static void drawcursor(Scene *scene, ARegion *ar, View3D *v3d)
534 {
535         int mx, my, co[2];
536         int flag;
537         
538         /* we dont want the clipping for cursor */
539         flag= v3d->flag;
540         v3d->flag= 0;
541         project_int(ar, give_cursor(scene, v3d), co);
542         v3d->flag= flag;
543         
544         mx = co[0];
545         my = co[1];
546         
547         if(mx!=IS_CLIPPED) {
548                 setlinestyle(0); 
549                 cpack(0xFF);
550                 circ((float)mx, (float)my, 10.0);
551                 setlinestyle(4); 
552                 cpack(0xFFFFFF);
553                 circ((float)mx, (float)my, 10.0);
554                 setlinestyle(0);
555                 cpack(0x0);
556                 
557                 sdrawline(mx-20, my, mx-5, my);
558                 sdrawline(mx+5, my, mx+20, my);
559                 sdrawline(mx, my-20, mx, my-5);
560                 sdrawline(mx, my+5, mx, my+20);
561         }
562 }
563
564 /* Draw a live substitute of the view icon, which is always shown
565  * colors copied from transform_manipulator.c, we should keep these matching. */
566 static void draw_view_axis(RegionView3D *rv3d)
567 {
568         const float k = U.rvisize;   /* axis size */
569         const float toll = 0.5;      /* used to see when view is quasi-orthogonal */
570         const float start = k + 1.0f;/* axis center in screen coordinates, x=y */
571         float ydisp = 0.0;          /* vertical displacement to allow obj info text */
572         int bright = 25*(float)U.rvibright + 5; /* axis alpha (rvibright has range 0-10) */
573
574         float vec[3];
575         float dx, dy;
576         
577         /* thickness of lines is proportional to k */
578         glLineWidth(2);
579
580         glEnable(GL_BLEND);
581         glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
582
583         /* X */
584         vec[0] = 1;
585         vec[1] = vec[2] = 0;
586         mul_qt_v3(rv3d->viewquat, vec);
587         dx = vec[0] * k;
588         dy = vec[1] * k;
589
590         glColor4ub(220, 0, 0, bright);
591         glBegin(GL_LINES);
592         glVertex2f(start, start + ydisp);
593         glVertex2f(start + dx, start + dy + ydisp);
594         glEnd();
595
596         if (fabsf(dx) > toll || fabsf(dy) > toll) {
597                 BLF_draw_default_ascii(start + dx + 2, start + dy + ydisp + 2, 0.0f, "x", 1);
598         }
599         
600         /* BLF_draw_default disables blending */
601         glEnable(GL_BLEND);
602
603         /* Y */
604         vec[1] = 1;
605         vec[0] = vec[2] = 0;
606         mul_qt_v3(rv3d->viewquat, vec);
607         dx = vec[0] * k;
608         dy = vec[1] * k;
609
610         glColor4ub(0, 220, 0, bright);
611         glBegin(GL_LINES);
612         glVertex2f(start, start + ydisp);
613         glVertex2f(start + dx, start + dy + ydisp);
614         glEnd();
615
616         if (fabsf(dx) > toll || fabsf(dy) > toll) {
617                 BLF_draw_default_ascii(start + dx + 2, start + dy + ydisp + 2, 0.0f, "y", 1);
618         }
619
620         glEnable(GL_BLEND);
621         
622         /* Z */
623         vec[2] = 1;
624         vec[1] = vec[0] = 0;
625         mul_qt_v3(rv3d->viewquat, vec);
626         dx = vec[0] * k;
627         dy = vec[1] * k;
628
629         glColor4ub(30, 30, 220, bright);
630         glBegin(GL_LINES);
631         glVertex2f(start, start + ydisp);
632         glVertex2f(start + dx, start + dy + ydisp);
633         glEnd();
634
635         if (fabsf(dx) > toll || fabsf(dy) > toll) {
636                 BLF_draw_default_ascii(start + dx + 2, start + dy + ydisp + 2, 0.0f, "z", 1);
637         }
638
639         /* restore line-width */
640         
641         glLineWidth(1.0);
642         glDisable(GL_BLEND);
643 }
644
645 /* draw center and axis of rotation for ongoing 3D mouse navigation */
646 static void draw_rotation_guide(RegionView3D *rv3d)
647 {
648         float o[3]; // center of rotation
649         float end[3]; // endpoints for drawing
650
651         float color[4] = {0.f ,0.4235f, 1.f, 1.f}; // bright blue so it matches device LEDs
652
653         negate_v3_v3(o, rv3d->ofs);
654
655         glEnable(GL_BLEND);
656         glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
657         glShadeModel(GL_SMOOTH);
658         glPointSize(5);
659         glEnable(GL_POINT_SMOOTH);
660         glDepthMask(0); // don't overwrite zbuf
661
662         if (rv3d->rot_angle != 0.f) {
663                 // -- draw rotation axis --
664                 float scaled_axis[3];
665                 const float scale = rv3d->dist;
666                 mul_v3_v3fl(scaled_axis, rv3d->rot_axis, scale);
667
668
669                 glBegin(GL_LINE_STRIP);
670                 color[3] = 0.f; // more transparent toward the ends
671                 glColor4fv(color);
672                 add_v3_v3v3(end, o, scaled_axis);
673                 glVertex3fv(end);
674
675                 // color[3] = 0.2f + fabsf(rv3d->rot_angle); // modulate opacity with angle
676                 // ^^ neat idea, but angle is frame-rate dependent, so it's usually close to 0.2
677
678                 color[3] = 0.5f; // more opaque toward the center
679                 glColor4fv(color);
680                 glVertex3fv(o);
681
682                 color[3] = 0.f;
683                 glColor4fv(color);
684                 sub_v3_v3v3(end, o, scaled_axis);
685                 glVertex3fv(end);
686                 glEnd();
687                 
688                 // -- draw ring around rotation center --
689                 {
690 #define         ROT_AXIS_DETAIL 13
691
692                         const float s = 0.05f * scale;
693                         const float step = 2.f * (float)(M_PI / ROT_AXIS_DETAIL);
694                         float angle;
695                         int i;
696
697                         float q[4]; // rotate ring so it's perpendicular to axis
698                         const int upright = fabsf(rv3d->rot_axis[2]) >= 0.95f;
699                         if (!upright) {
700                                 const float up[3] = {0.f, 0.f, 1.f};
701                                 float vis_angle, vis_axis[3];
702
703                                 cross_v3_v3v3(vis_axis, up, rv3d->rot_axis);
704                                 vis_angle = acosf(dot_v3v3(up, rv3d->rot_axis));
705                                 axis_angle_to_quat(q, vis_axis, vis_angle);
706                         }
707
708                         color[3] = 0.25f; // somewhat faint
709                         glColor4fv(color);
710                         glBegin(GL_LINE_LOOP);
711                         for (i = 0, angle = 0.f; i < ROT_AXIS_DETAIL; ++i, angle += step) {
712                                 float p[3] = {s * cosf(angle), s * sinf(angle), 0.0f};
713
714                                 if (!upright) {
715                                         mul_qt_v3(q, p);
716                                 }
717
718                                 add_v3_v3(p, o);
719                                 glVertex3fv(p);
720                         }
721                         glEnd();
722
723 #undef          ROT_AXIS_DETAIL
724                 }
725
726                 color[3] = 1.f; // solid dot
727         }
728         else
729                 color[3] = 0.5f; // see-through dot
730
731         // -- draw rotation center --
732         glColor4fv(color);
733         glBegin(GL_POINTS);
734                 glVertex3fv(o);
735         glEnd();
736
737         // find screen coordinates for rotation center, then draw pretty icon
738         // mul_m4_v3(rv3d->persinv, rot_center);
739         // UI_icon_draw(rot_center[0], rot_center[1], ICON_NDOF_TURN);
740         // ^^ just playing around, does not work
741
742         glDisable(GL_BLEND);
743         glDisable(GL_POINT_SMOOTH);
744         glDepthMask(1);
745 }
746
747 static void draw_view_icon(RegionView3D *rv3d)
748 {
749         BIFIconID icon;
750         
751         if( ELEM(rv3d->view, RV3D_VIEW_TOP, RV3D_VIEW_BOTTOM)) 
752                 icon= ICON_AXIS_TOP;
753         else if( ELEM(rv3d->view, RV3D_VIEW_FRONT, RV3D_VIEW_BACK)) 
754                 icon= ICON_AXIS_FRONT;
755         else if( ELEM(rv3d->view, RV3D_VIEW_RIGHT, RV3D_VIEW_LEFT)) 
756                 icon= ICON_AXIS_SIDE;
757         else return ;
758         
759         glEnable(GL_BLEND);
760         glBlendFunc(GL_SRC_ALPHA,  GL_ONE_MINUS_SRC_ALPHA); 
761         
762         UI_icon_draw(5.0, 5.0, icon);
763         
764         glDisable(GL_BLEND);
765 }
766
767 static const char *view3d_get_name(View3D *v3d, RegionView3D *rv3d)
768 {
769         const char *name = NULL;
770         
771         switch (rv3d->view) {
772                 case RV3D_VIEW_FRONT:
773                         if (rv3d->persp == RV3D_ORTHO) name = "Front Ortho";
774                         else name = "Front Persp";
775                         break;
776                 case RV3D_VIEW_BACK:
777                         if (rv3d->persp == RV3D_ORTHO) name = "Back Ortho";
778                         else name = "Back Persp";
779                         break;
780                 case RV3D_VIEW_TOP:
781                         if (rv3d->persp == RV3D_ORTHO) name = "Top Ortho";
782                         else name = "Top Persp";
783                         break;
784                 case RV3D_VIEW_BOTTOM:
785                         if (rv3d->persp == RV3D_ORTHO) name = "Bottom Ortho";
786                         else name = "Bottom Persp";
787                         break;
788                 case RV3D_VIEW_RIGHT:
789                         if (rv3d->persp == RV3D_ORTHO) name = "Right Ortho";
790                         else name = "Right Persp";
791                         break;
792                 case RV3D_VIEW_LEFT:
793                         if (rv3d->persp == RV3D_ORTHO) name = "Left Ortho";
794                         else name = "Left Persp";
795                         break;
796                         
797                 default:
798                         if (rv3d->persp==RV3D_CAMOB) {
799                                 if ((v3d->camera) && (v3d->camera->type == OB_CAMERA)) {
800                                         Camera *cam;
801                                         cam = v3d->camera->data;
802                                         name = (cam->type != CAM_ORTHO) ? "Camera Persp" : "Camera Ortho";
803                                 } else {
804                                         name = "Object as Camera";
805                                 }
806                         } else { 
807                                 name = (rv3d->persp == RV3D_ORTHO) ? "User Ortho" : "User Persp";
808                         }
809                         break;
810         }
811         
812         return name;
813 }
814
815 static void draw_viewport_name(ARegion *ar, View3D *v3d)
816 {
817         RegionView3D *rv3d= ar->regiondata;
818         const char *name= view3d_get_name(v3d, rv3d);
819         char tmpstr[24];
820         
821         if (v3d->localvd) {
822                 BLI_snprintf(tmpstr, sizeof(tmpstr), "%s (Local)", name);
823                 name= tmpstr;
824         }
825
826         if (name) {
827                 UI_ThemeColor(TH_TEXT_HI);
828                 BLF_draw_default_ascii(22,  ar->winy-17, 0.0f, name, sizeof(tmpstr));
829         }
830 }
831
832 /* draw info beside axes in bottom left-corner: 
833 *       framenum, object name, bone name (if available), marker name (if available)
834 */
835 static void draw_selected_name(Scene *scene, Object *ob)
836 {
837         char info[256], *markern;
838         short offset=30;
839         
840         /* get name of marker on current frame (if available) */
841         markern= scene_find_marker_name(scene, CFRA);
842         
843         /* check if there is an object */
844         if(ob) {
845                 /* name(s) to display depends on type of object */
846                 if(ob->type==OB_ARMATURE) {
847                         bArmature *arm= ob->data;
848                         char *name= NULL;
849                         
850                         /* show name of active bone too (if possible) */
851                         if(arm->edbo) {
852
853                                 if(arm->act_edbone)
854                                         name= ((EditBone *)arm->act_edbone)->name;
855
856                         }
857                         else if(ob->mode & OB_MODE_POSE) {
858                                 if(arm->act_bone) {
859
860                                         if(arm->act_bone->layer & arm->layer)
861                                                 name= arm->act_bone->name;
862
863                                 }
864                         }
865                         if(name && markern)
866                                 sprintf(info, "(%d) %s %s <%s>", CFRA, ob->id.name+2, name, markern);
867                         else if(name)
868                                 sprintf(info, "(%d) %s %s", CFRA, ob->id.name+2, name);
869                         else
870                                 sprintf(info, "(%d) %s", CFRA, ob->id.name+2);
871                 }
872                 else if(ELEM3(ob->type, OB_MESH, OB_LATTICE, OB_CURVE)) {
873                         Key *key= NULL;
874                         KeyBlock *kb = NULL;
875                         char shapes[75];
876                         
877                         /* try to display active shapekey too */
878                         shapes[0] = 0;
879                         key = ob_get_key(ob);
880                         if(key){
881                                 kb = BLI_findlink(&key->block, ob->shapenr-1);
882                                 if(kb){
883                                         sprintf(shapes, ": %s ", kb->name);             
884                                         if(ob->shapeflag == OB_SHAPE_LOCK){
885                                                 strcat(shapes, " (Pinned)");
886                                         }
887                                 }
888                         }
889                         
890                         if(markern)
891                                 sprintf(info, "(%d) %s %s <%s>", CFRA, ob->id.name+2, shapes, markern);
892                         else
893                                 sprintf(info, "(%d) %s %s", CFRA, ob->id.name+2, shapes);
894                 }
895                 else {
896                         /* standard object */
897                         if (markern)
898                                 sprintf(info, "(%d) %s <%s>", CFRA, ob->id.name+2, markern);
899                         else
900                                 sprintf(info, "(%d) %s", CFRA, ob->id.name+2);
901                 }
902                 
903                 /* color depends on whether there is a keyframe */
904                 if (id_frame_has_keyframe((ID *)ob, /*BKE_curframe(scene)*/(float)(CFRA), ANIMFILTER_KEYS_LOCAL))
905                         UI_ThemeColor(TH_VERTEX_SELECT);
906                 else
907                         UI_ThemeColor(TH_TEXT_HI);
908         }
909         else {
910                 /* no object */
911                 if (markern)
912                         sprintf(info, "(%d) <%s>", CFRA, markern);
913                 else
914                         sprintf(info, "(%d)", CFRA);
915                 
916                 /* color is always white */
917                 UI_ThemeColor(TH_TEXT_HI);
918         }
919         
920         if (U.uiflag & USER_SHOW_ROTVIEWICON)
921                 offset = 14 + (U.rvisize * 2);
922
923         BLF_draw_default(offset,  10, 0.0f, info, sizeof(info)-1);
924 }
925
926 static void view3d_camera_border(Scene *scene, ARegion *ar, View3D *v3d, RegionView3D *rv3d, rctf *viewborder_r, short no_shift, short no_zoom)
927 {
928         CameraParams params;
929         rctf rect_view, rect_camera;
930
931         /* get viewport viewplane */
932         camera_params_init(&params);
933         camera_params_from_view3d(&params, v3d, rv3d);
934         if(no_zoom)
935                 params.zoom= 1.0f;
936         camera_params_compute_viewplane(&params, ar->winx, ar->winy, 1.0f, 1.0f);
937         rect_view= params.viewplane;
938
939         /* get camera viewplane */
940         camera_params_init(&params);
941         camera_params_from_object(&params, v3d->camera);
942         if(no_shift) {
943                 params.shiftx= 0.0f;
944                 params.shifty= 0.0f;
945         }
946         camera_params_compute_viewplane(&params, scene->r.xsch, scene->r.ysch, scene->r.xasp, scene->r.yasp);
947         rect_camera= params.viewplane;
948
949         /* get camera border within viewport */
950         viewborder_r->xmin= ((rect_camera.xmin - rect_view.xmin)/(rect_view.xmax - rect_view.xmin))*ar->winx;
951         viewborder_r->xmax= ((rect_camera.xmax - rect_view.xmin)/(rect_view.xmax - rect_view.xmin))*ar->winx;
952         viewborder_r->ymin= ((rect_camera.ymin - rect_view.ymin)/(rect_view.ymax - rect_view.ymin))*ar->winy;
953         viewborder_r->ymax= ((rect_camera.ymax - rect_view.ymin)/(rect_view.ymax - rect_view.ymin))*ar->winy;
954 }
955
956 void ED_view3d_calc_camera_border_size(Scene *scene, ARegion *ar, View3D *v3d, RegionView3D *rv3d, float size_r[2])
957 {
958         rctf viewborder;
959
960         view3d_camera_border(scene, ar, v3d, rv3d, &viewborder, TRUE, TRUE);
961         size_r[0]= viewborder.xmax - viewborder.xmin;
962         size_r[1]= viewborder.ymax - viewborder.ymin;
963 }
964
965 void ED_view3d_calc_camera_border(Scene *scene, ARegion *ar, View3D *v3d, RegionView3D *rv3d, rctf *viewborder_r, short no_shift)
966 {
967         view3d_camera_border(scene, ar, v3d, rv3d, viewborder_r, no_shift, FALSE);
968 }
969
970 static void drawviewborder_grid3(float x1, float x2, float y1, float y2, float fac)
971 {
972         float x3, y3, x4, y4;
973
974         x3= x1 + fac * (x2-x1);
975         y3= y1 + fac * (y2-y1);
976         x4= x1 + (1.0f - fac) * (x2-x1);
977         y4= y1 + (1.0f - fac) * (y2-y1);
978
979         glBegin(GL_LINES);
980         glVertex2f(x1, y3);
981         glVertex2f(x2, y3);
982
983         glVertex2f(x1, y4);
984         glVertex2f(x2, y4);
985
986         glVertex2f(x3, y1);
987         glVertex2f(x3, y2);
988
989         glVertex2f(x4, y1);
990         glVertex2f(x4, y2);
991         glEnd();
992 }
993
994 /* harmonious triangle */
995 static void drawviewborder_triangle(float x1, float x2, float y1, float y2, const char golden, const char dir)
996 {
997         float ofs;
998         float w= x2 - x1;
999         float h= y2 - y1;
1000
1001         glBegin(GL_LINES);
1002         if(w > h) {
1003                 if(golden) {
1004                         ofs = w * (1.0f-(1.0f/1.61803399f));
1005                 }
1006                 else {
1007                         ofs = h * (h / w);
1008                 }
1009                 if(dir == 'B') SWAP(float, y1, y2);
1010
1011                 glVertex2f(x1, y1);
1012                 glVertex2f(x2, y2);
1013
1014                 glVertex2f(x2, y1);
1015                 glVertex2f(x1 + (w - ofs), y2);
1016
1017                 glVertex2f(x1, y2);
1018                 glVertex2f(x1 + ofs, y1);
1019         }
1020         else {
1021                 if(golden) {
1022                         ofs = h * (1.0f-(1.0f/1.61803399f));
1023                 }
1024                 else {
1025                         ofs = w * (w / h);
1026                 }
1027                 if(dir == 'B') SWAP(float, x1, x2);
1028
1029                 glVertex2f(x1, y1);
1030                 glVertex2f(x2, y2);
1031
1032                 glVertex2f(x2, y1);
1033                 glVertex2f(x1, y1 + ofs);
1034
1035                 glVertex2f(x1, y2);
1036                 glVertex2f(x2, y1 + (h - ofs));
1037         }
1038         glEnd();
1039 }
1040
1041 static void drawviewborder(Scene *scene, ARegion *ar, View3D *v3d)
1042 {
1043         float fac, a;
1044         float x1, x2, y1, y2;
1045         float x1i, x2i, y1i, y2i;
1046         float x3, y3, x4, y4;
1047         rctf viewborder;
1048         Camera *ca= NULL;
1049         RegionView3D *rv3d= (RegionView3D *)ar->regiondata;
1050         
1051         if(v3d->camera==NULL)
1052                 return;
1053         if(v3d->camera->type==OB_CAMERA)
1054                 ca = v3d->camera->data;
1055         
1056         ED_view3d_calc_camera_border(scene, ar, v3d, rv3d, &viewborder, FALSE);
1057         /* the offsets */
1058         x1= viewborder.xmin;
1059         y1= viewborder.ymin;
1060         x2= viewborder.xmax;
1061         y2= viewborder.ymax;
1062         
1063         /* apply offsets so the real 3D camera shows through */
1064
1065         /* note: quite un-scientific but without this bit extra
1066          * 0.0001 on the lower left the 2D border sometimes
1067          * obscures the 3D camera border */
1068         /* note: with VIEW3D_CAMERA_BORDER_HACK defined this error isn't noticable
1069          * but keep it here incase we need to remove the workaround */
1070         x1i= (int)(x1 - 1.0001f);
1071         y1i= (int)(y1 - 1.0001f);
1072         x2i= (int)(x2 + (1.0f-0.0001f));
1073         y2i= (int)(y2 + (1.0f-0.0001f));
1074         
1075         /* passepartout, specified in camera edit buttons */
1076         if (ca && (ca->flag & CAM_SHOWPASSEPARTOUT) && ca->passepartalpha > 0.000001f) {
1077                 if (ca->passepartalpha == 1.0f) {
1078                         glColor3f(0, 0, 0);
1079                 } else {
1080                         glBlendFunc( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA );
1081                         glEnable(GL_BLEND);
1082                         glColor4f(0, 0, 0, ca->passepartalpha);
1083                 }
1084                 if (x1i > 0.0f)
1085                         glRectf(0.0, (float)ar->winy, x1i, 0.0);
1086                 if (x2i < (float)ar->winx)
1087                         glRectf(x2i, (float)ar->winy, (float)ar->winx, 0.0);
1088                 if (y2i < (float)ar->winy)
1089                         glRectf(x1i, (float)ar->winy, x2i, y2i);
1090                 if (y2i > 0.0f)
1091                         glRectf(x1i, y1i, x2i, 0.0);
1092                 
1093                 glDisable(GL_BLEND);
1094         }
1095
1096         /* edge */
1097         glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);      
1098
1099         setlinestyle(0);
1100         UI_ThemeColor(TH_BACK);
1101         glRectf(x1i, y1i, x2i, y2i);
1102
1103 #ifdef VIEW3D_CAMERA_BORDER_HACK
1104         if(view3d_camera_border_hack_test == TRUE) {
1105                 glColor4fv(view3d_camera_border_hack_col);
1106                 glRectf(x1i+1, y1i+1, x2i-1, y2i-1);
1107                 view3d_camera_border_hack_test= FALSE;
1108         }
1109 #endif
1110
1111         setlinestyle(3);
1112         UI_ThemeColor(TH_WIRE);
1113         glRectf(x1i, y1i, x2i, y2i);
1114
1115         /* border */
1116         if(scene->r.mode & R_BORDER) {
1117                 
1118                 cpack(0);
1119                 x3= x1+ scene->r.border.xmin*(x2-x1);
1120                 y3= y1+ scene->r.border.ymin*(y2-y1);
1121                 x4= x1+ scene->r.border.xmax*(x2-x1);
1122                 y4= y1+ scene->r.border.ymax*(y2-y1);
1123                 
1124                 cpack(0x4040FF);
1125                 glRectf(x3,  y3,  x4,  y4); 
1126         }
1127
1128         /* safety border */
1129         if(ca) {
1130                 if (ca->dtx & CAM_DTX_CENTER) {
1131                         UI_ThemeColorBlendShade(TH_WIRE, TH_BACK, 0.25, 0);
1132
1133                         x3= x1+ 0.5f*(x2-x1);
1134                         y3= y1+ 0.5f*(y2-y1);
1135
1136                         glBegin(GL_LINES);
1137                         glVertex2f(x1, y3);
1138                         glVertex2f(x2, y3);
1139
1140                         glVertex2f(x3, y1);
1141                         glVertex2f(x3, y2);
1142                         glEnd();
1143                 }
1144
1145                 if (ca->dtx & CAM_DTX_CENTER_DIAG) {
1146                         UI_ThemeColorBlendShade(TH_WIRE, TH_BACK, 0.25, 0);
1147
1148                         glBegin(GL_LINES);
1149                         glVertex2f(x1, y1);
1150                         glVertex2f(x2, y2);
1151
1152                         glVertex2f(x1, y2);
1153                         glVertex2f(x2, y1);
1154                         glEnd();
1155                 }
1156
1157                 if (ca->dtx & CAM_DTX_THIRDS) {
1158                         UI_ThemeColorBlendShade(TH_WIRE, TH_BACK, 0.25, 0);
1159                         drawviewborder_grid3(x1, x2, y1, y2, 1.0f/3.0f);
1160                 }
1161
1162                 if (ca->dtx & CAM_DTX_GOLDEN) {
1163                         UI_ThemeColorBlendShade(TH_WIRE, TH_BACK, 0.25, 0);
1164                         drawviewborder_grid3(x1, x2, y1, y2, 1.0f-(1.0f/1.61803399f));
1165                 }
1166
1167                 if (ca->dtx & CAM_DTX_GOLDEN_TRI_A) {
1168                         UI_ThemeColorBlendShade(TH_WIRE, TH_BACK, 0.25, 0);
1169                         drawviewborder_triangle(x1, x2, y1, y2, 0, 'A');
1170                 }
1171
1172                 if (ca->dtx & CAM_DTX_GOLDEN_TRI_B) {
1173                         UI_ThemeColorBlendShade(TH_WIRE, TH_BACK, 0.25, 0);
1174                         drawviewborder_triangle(x1, x2, y1, y2, 0, 'B');
1175                 }
1176
1177                 if (ca->dtx & CAM_DTX_HARMONY_TRI_A) {
1178                         UI_ThemeColorBlendShade(TH_WIRE, TH_BACK, 0.25, 0);
1179                         drawviewborder_triangle(x1, x2, y1, y2, 1, 'A');
1180                 }
1181
1182                 if (ca->dtx & CAM_DTX_HARMONY_TRI_B) {
1183                         UI_ThemeColorBlendShade(TH_WIRE, TH_BACK, 0.25, 0);
1184                         drawviewborder_triangle(x1, x2, y1, y2, 1, 'B');
1185                 }
1186
1187                 if (ca->flag & CAM_SHOWTITLESAFE) {
1188                         fac= 0.1;
1189
1190                         a= fac*(x2-x1);
1191                         x1+= a;
1192                         x2-= a;
1193
1194                         a= fac*(y2-y1);
1195                         y1+= a;
1196                         y2-= a;
1197
1198                         UI_ThemeColorBlendShade(TH_WIRE, TH_BACK, 0.25, 0);
1199
1200                         uiSetRoundBox(UI_CNR_ALL);
1201                         uiDrawBox(GL_LINE_LOOP, x1, y1, x2, y2, 12.0);
1202                 }
1203                 if (ca && (ca->flag & CAM_SHOWSENSOR)) {
1204                         /* determine sensor fit, and get sensor x/y, for auto fit we
1205                            assume and square sensor and only use sensor_x */
1206                         float sizex= scene->r.xsch*scene->r.xasp;
1207                         float sizey= scene->r.ysch*scene->r.yasp;
1208                         int sensor_fit = camera_sensor_fit(ca->sensor_fit, sizex, sizey);
1209                         float sensor_x= ca->sensor_x;
1210                         float sensor_y= (ca->sensor_fit == CAMERA_SENSOR_FIT_AUTO)? ca->sensor_x: ca->sensor_y;
1211
1212                         /* determine sensor plane */
1213                         rctf rect;
1214
1215                         if(sensor_fit == CAMERA_SENSOR_FIT_HOR) {
1216                                 float sensor_scale = (x2i-x1i) / sensor_x;
1217                                 float sensor_height = sensor_scale * sensor_y;
1218
1219                                 rect.xmin= x1i;
1220                                 rect.xmax= x2i;
1221                                 rect.ymin= (y1i + y2i)*0.5f - sensor_height*0.5f;
1222                                 rect.ymax= rect.ymin + sensor_height;
1223                         }
1224                         else {
1225                                 float sensor_scale = (y2i-y1i) / sensor_y;
1226                                 float sensor_width = sensor_scale * sensor_x;
1227
1228                                 rect.xmin= (x1i + x2i)*0.5f - sensor_width*0.5f;
1229                                 rect.xmax= rect.xmin + sensor_width;
1230                                 rect.ymin= y1i;
1231                                 rect.ymax= y2i;
1232                         }
1233
1234                         /* draw */
1235                         UI_ThemeColorShade(TH_WIRE, 100);
1236                         uiDrawBox(GL_LINE_LOOP, rect.xmin, rect.ymin, rect.xmax, rect.ymax, 2.0f);
1237                 }
1238         }
1239
1240         setlinestyle(0);
1241         glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
1242
1243         /* camera name - draw in highlighted text color */
1244         if (ca && (ca->flag & CAM_SHOWNAME)) {
1245                 UI_ThemeColor(TH_TEXT_HI);
1246                 BLF_draw_default(x1i, y1i-15, 0.0f, v3d->camera->id.name+2, sizeof(v3d->camera->id.name)-2);
1247                 UI_ThemeColor(TH_WIRE);
1248         }
1249 }
1250
1251 /* *********************** backdraw for selection *************** */
1252
1253 static void backdrawview3d(Scene *scene, ARegion *ar, View3D *v3d)
1254 {
1255         RegionView3D *rv3d= ar->regiondata;
1256         struct Base *base = scene->basact;
1257         int multisample_enabled;
1258         rcti winrct;
1259
1260         BLI_assert(ar->regiontype == RGN_TYPE_WINDOW);
1261
1262         if(base && (base->object->mode & (OB_MODE_VERTEX_PAINT|OB_MODE_WEIGHT_PAINT) ||
1263                     paint_facesel_test(base->object)))
1264         {
1265                 /* do nothing */
1266         }
1267         else if((base && (base->object->mode & OB_MODE_TEXTURE_PAINT)) &&
1268                 scene->toolsettings && (scene->toolsettings->imapaint.flag & IMAGEPAINT_PROJECT_DISABLE))
1269         {
1270                 /* do nothing */
1271         }
1272         else if((base && (base->object->mode & OB_MODE_PARTICLE_EDIT)) &&
1273                 v3d->drawtype > OB_WIRE && (v3d->flag & V3D_ZBUF_SELECT))
1274         {
1275                 /* do nothing */
1276         }
1277         else if(scene->obedit && v3d->drawtype>OB_WIRE &&
1278                 (v3d->flag & V3D_ZBUF_SELECT)) {
1279                 /* do nothing */
1280         }
1281         else {
1282                 v3d->flag &= ~V3D_INVALID_BACKBUF;
1283                 return;
1284         }
1285
1286         if( !(v3d->flag & V3D_INVALID_BACKBUF) ) return;
1287
1288 //      if(test) {
1289 //              if(qtest()) {
1290 //                      addafterqueue(ar->win, BACKBUFDRAW, 1);
1291 //                      return;
1292 //              }
1293 //      }
1294
1295         if(v3d->drawtype > OB_WIRE) v3d->zbuf= TRUE;
1296         
1297         /* dithering and AA break color coding, so disable */
1298         glDisable(GL_DITHER);
1299
1300         multisample_enabled= glIsEnabled(GL_MULTISAMPLE_ARB);
1301         if(multisample_enabled)
1302                 glDisable(GL_MULTISAMPLE_ARB);
1303
1304         region_scissor_winrct(ar, &winrct);
1305         glScissor(winrct.xmin, winrct.ymin, winrct.xmax - winrct.xmin, winrct.ymax - winrct.ymin);
1306
1307         glClearColor(0.0, 0.0, 0.0, 0.0); 
1308         if(v3d->zbuf) {
1309                 glEnable(GL_DEPTH_TEST);
1310                 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
1311         }
1312         else {
1313                 glClear(GL_COLOR_BUFFER_BIT);
1314                 glDisable(GL_DEPTH_TEST);
1315         }
1316         
1317         if(rv3d->rflag & RV3D_CLIPPING)
1318                 view3d_set_clipping(rv3d);
1319         
1320         G.f |= G_BACKBUFSEL;
1321         
1322         if(base && (base->lay & v3d->lay))
1323                 draw_object_backbufsel(scene, v3d, rv3d, base->object);
1324
1325         v3d->flag &= ~V3D_INVALID_BACKBUF;
1326         ar->swap= 0; /* mark invalid backbuf for wm draw */
1327
1328         G.f &= ~G_BACKBUFSEL;
1329         v3d->zbuf= FALSE; 
1330         glDisable(GL_DEPTH_TEST);
1331         glEnable(GL_DITHER);
1332         if(multisample_enabled)
1333                 glEnable(GL_MULTISAMPLE_ARB);
1334
1335         if(rv3d->rflag & RV3D_CLIPPING)
1336                 view3d_clr_clipping();
1337
1338         /* it is important to end a view in a transform compatible with buttons */
1339 //      persp(PERSP_WIN);  // set ortho
1340
1341 }
1342
1343 void view3d_validate_backbuf(ViewContext *vc)
1344 {
1345         if(vc->v3d->flag & V3D_INVALID_BACKBUF)
1346                 backdrawview3d(vc->scene, vc->ar, vc->v3d);
1347 }
1348
1349 /* samples a single pixel (copied from vpaint) */
1350 unsigned int view3d_sample_backbuf(ViewContext *vc, int x, int y)
1351 {
1352         unsigned int col;
1353         
1354         if(x >= vc->ar->winx || y >= vc->ar->winy) return 0;
1355         x+= vc->ar->winrct.xmin;
1356         y+= vc->ar->winrct.ymin;
1357         
1358         view3d_validate_backbuf(vc);
1359
1360         glReadPixels(x,  y, 1, 1, GL_RGBA, GL_UNSIGNED_BYTE,  &col);
1361         glReadBuffer(GL_BACK);  
1362         
1363         if(ENDIAN_ORDER==B_ENDIAN) SWITCH_INT(col);
1364         
1365         return WM_framebuffer_to_index(col);
1366 }
1367
1368 /* reads full rect, converts indices */
1369 ImBuf *view3d_read_backbuf(ViewContext *vc, short xmin, short ymin, short xmax, short ymax)
1370 {
1371         unsigned int *dr, *rd;
1372         struct ImBuf *ibuf, *ibuf1;
1373         int a;
1374         short xminc, yminc, xmaxc, ymaxc, xs, ys;
1375         
1376         /* clip */
1377         if(xmin<0) xminc= 0; else xminc= xmin;
1378         if(xmax >= vc->ar->winx) xmaxc= vc->ar->winx-1; else xmaxc= xmax;
1379         if(xminc > xmaxc) return NULL;
1380
1381         if(ymin<0) yminc= 0; else yminc= ymin;
1382         if(ymax >= vc->ar->winy) ymaxc= vc->ar->winy-1; else ymaxc= ymax;
1383         if(yminc > ymaxc) return NULL;
1384         
1385         ibuf= IMB_allocImBuf((xmaxc-xminc+1), (ymaxc-yminc+1), 32, IB_rect);
1386
1387         view3d_validate_backbuf(vc); 
1388         
1389         glReadPixels(vc->ar->winrct.xmin+xminc, vc->ar->winrct.ymin+yminc, (xmaxc-xminc+1), (ymaxc-yminc+1), GL_RGBA, GL_UNSIGNED_BYTE, ibuf->rect);
1390         glReadBuffer(GL_BACK);  
1391
1392         if(ENDIAN_ORDER==B_ENDIAN) IMB_convert_rgba_to_abgr(ibuf);
1393
1394         a= (xmaxc-xminc+1)*(ymaxc-yminc+1);
1395         dr= ibuf->rect;
1396         while(a--) {
1397                 if(*dr) *dr= WM_framebuffer_to_index(*dr);
1398                 dr++;
1399         }
1400         
1401         /* put clipped result back, if needed */
1402         if(xminc==xmin && xmaxc==xmax && yminc==ymin && ymaxc==ymax) 
1403                 return ibuf;
1404         
1405         ibuf1= IMB_allocImBuf( (xmax-xmin+1),(ymax-ymin+1),32,IB_rect);
1406         rd= ibuf->rect;
1407         dr= ibuf1->rect;
1408                 
1409         for(ys= ymin; ys<=ymax; ys++) {
1410                 for(xs= xmin; xs<=xmax; xs++, dr++) {
1411                         if( xs>=xminc && xs<=xmaxc && ys>=yminc && ys<=ymaxc) {
1412                                 *dr= *rd;
1413                                 rd++;
1414                         }
1415                 }
1416         }
1417         IMB_freeImBuf(ibuf);
1418         return ibuf1;
1419 }
1420
1421 /* smart function to sample a rect spiralling outside, nice for backbuf selection */
1422 unsigned int view3d_sample_backbuf_rect(ViewContext *vc, const int mval[2], int size,
1423                                                                                 unsigned int min, unsigned int max, int *dist, short strict, 
1424                                                                                 void *handle, unsigned int (*indextest)(void *handle, unsigned int index))
1425 {
1426         struct ImBuf *buf;
1427         unsigned int *bufmin, *bufmax, *tbuf;
1428         int minx, miny;
1429         int a, b, rc, nr, amount, dirvec[4][2];
1430         int distance=0;
1431         unsigned int index = 0;
1432         short indexok = 0;      
1433
1434         amount= (size-1)/2;
1435
1436         minx = mval[0]-(amount+1);
1437         miny = mval[1]-(amount+1);
1438         buf = view3d_read_backbuf(vc, minx, miny, minx+size-1, miny+size-1);
1439         if (!buf) return 0;
1440
1441         rc= 0;
1442         
1443         dirvec[0][0]= 1; dirvec[0][1]= 0;
1444         dirvec[1][0]= 0; dirvec[1][1]= -size;
1445         dirvec[2][0]= -1; dirvec[2][1]= 0;
1446         dirvec[3][0]= 0; dirvec[3][1]= size;
1447         
1448         bufmin = buf->rect;
1449         tbuf = buf->rect;
1450         bufmax = buf->rect + size*size;
1451         tbuf+= amount*size+ amount;
1452         
1453         for(nr=1; nr<=size; nr++) {
1454                 
1455                 for(a=0; a<2; a++) {
1456                         for(b=0; b<nr; b++, distance++) {
1457                                 if (*tbuf && *tbuf>=min && *tbuf<max) { //we got a hit
1458                                         if(strict){
1459                                                 indexok =  indextest(handle, *tbuf - min+1);
1460                                                 if(indexok){
1461                                                         *dist= (short) sqrt( (float)distance   );
1462                                                         index = *tbuf - min+1;
1463                                                         goto exit; 
1464                                                 }                                               
1465                                         }
1466                                         else{
1467                                                 *dist= (short) sqrt( (float)distance ); // XXX, this distance is wrong - 
1468                                                 index = *tbuf - min+1; // messy yah, but indices start at 1
1469                                                 goto exit;
1470                                         }                       
1471                                 }
1472                                 
1473                                 tbuf+= (dirvec[rc][0]+dirvec[rc][1]);
1474                                 
1475                                 if(tbuf<bufmin || tbuf>=bufmax) {
1476                                         goto exit;
1477                                 }
1478                         }
1479                         rc++;
1480                         rc &= 3;
1481                 }
1482         }
1483
1484 exit:
1485         IMB_freeImBuf(buf);
1486         return index;
1487 }
1488
1489
1490 /* ************************************************************* */
1491
1492 static void draw_bgpic(Scene *scene, ARegion *ar, View3D *v3d)
1493 {
1494         RegionView3D *rv3d= ar->regiondata;
1495         BGpic *bgpic;
1496         Image *ima;
1497         MovieClip *clip;
1498         ImBuf *ibuf= NULL, *freeibuf;
1499         float vec[4], fac, asp, zoomx, zoomy;
1500         float x1, y1, x2, y2, cx, cy;
1501
1502
1503         for ( bgpic= v3d->bgpicbase.first; bgpic; bgpic= bgpic->next ) {
1504
1505                 if(     (bgpic->view == 0) || /* zero for any */
1506                         (bgpic->view & (1<<rv3d->view)) || /* check agaist flags */
1507                         (rv3d->persp==RV3D_CAMOB && bgpic->view == (1<<RV3D_VIEW_CAMERA))
1508                 ) {
1509                         freeibuf= NULL;
1510                         if(bgpic->source==V3D_BGPIC_IMAGE) {
1511                                 ima= bgpic->ima;
1512                                 if(ima==NULL)
1513                                         continue;
1514                                 BKE_image_user_calc_frame(&bgpic->iuser, CFRA, 0);
1515                                 ibuf= BKE_image_get_ibuf(ima, &bgpic->iuser);
1516                         } else {
1517                                 clip= NULL;
1518
1519                                 if(bgpic->flag&V3D_BGPIC_CAMERACLIP) {
1520                                         if(!scene->camera)
1521                                                 scene->camera= scene_find_camera(scene);
1522
1523                                         if(scene->camera)
1524                                                 clip= object_get_movieclip(scene, scene->camera, 1);
1525                                 } else clip= bgpic->clip;
1526
1527                                 if(clip==NULL)
1528                                         continue;
1529
1530                                 BKE_movieclip_user_set_frame(&bgpic->cuser, CFRA);
1531                                 ibuf= BKE_movieclip_get_ibuf(clip, &bgpic->cuser);
1532
1533                                 /* working with ibuf from image and clip has got different workflow now.
1534                                    ibuf acquired from clip is referenced by cache system and should
1535                                    be dereferenced after usage. */
1536                                 freeibuf= ibuf;
1537                         }
1538
1539                         if(ibuf==NULL)
1540                                 continue;
1541
1542                         if((ibuf->rect==NULL && ibuf->rect_float==NULL) || ibuf->channels!=4) { /* invalid image format */
1543                                 if(freeibuf)
1544                                         IMB_freeImBuf(freeibuf);
1545
1546                                 continue;
1547                         }
1548
1549                         if(ibuf->rect==NULL)
1550                                 IMB_rect_from_float(ibuf);
1551
1552                         if(rv3d->persp==RV3D_CAMOB) {
1553                                 rctf vb;
1554
1555                                 ED_view3d_calc_camera_border(scene, ar, v3d, rv3d, &vb, FALSE);
1556
1557                                 x1= vb.xmin;
1558                                 y1= vb.ymin;
1559                                 x2= vb.xmax;
1560                                 y2= vb.ymax;
1561                         }
1562                         else {
1563                                 float sco[2];
1564                                 const float mval_f[2]= {1.0f, 0.0f};
1565
1566                                 /* calc window coord */
1567                                 initgrabz(rv3d, 0.0, 0.0, 0.0);
1568                                 ED_view3d_win_to_delta(ar, mval_f, vec);
1569                                 fac= MAX3( fabs(vec[0]), fabs(vec[1]), fabs(vec[1]) );
1570                                 fac= 1.0f/fac;
1571
1572                                 asp= ( (float)ibuf->y)/(float)ibuf->x;
1573
1574                                 vec[0] = vec[1] = vec[2] = 0.0;
1575                                 ED_view3d_project_float(ar, vec, sco, rv3d->persmat);
1576                                 cx = sco[0];
1577                                 cy = sco[1];
1578
1579                                 x1=  cx+ fac*(bgpic->xof-bgpic->size);
1580                                 y1=  cy+ asp*fac*(bgpic->yof-bgpic->size);
1581                                 x2=  cx+ fac*(bgpic->xof+bgpic->size);
1582                                 y2=  cy+ asp*fac*(bgpic->yof+bgpic->size);
1583                         }
1584
1585                         /* complete clip? */
1586
1587                         if(x2 < 0 || y2 < 0 || x1 > ar->winx || y1 > ar->winy) {
1588                                 if(freeibuf)
1589                                         IMB_freeImBuf(freeibuf);
1590
1591                                 continue;
1592                         }
1593
1594                         zoomx= (x2-x1)/ibuf->x;
1595                         zoomy= (y2-y1)/ibuf->y;
1596
1597                         /* for some reason; zoomlevels down refuses to use GL_ALPHA_SCALE */
1598                         if(zoomx < 1.0f || zoomy < 1.0f) {
1599                                 float tzoom= MIN2(zoomx, zoomy);
1600                                 int mip= 0;
1601
1602                                 if((ibuf->userflags&IB_MIPMAP_INVALID) != 0) {
1603                                         IMB_remakemipmap(ibuf, 0);
1604                                         ibuf->userflags&= ~IB_MIPMAP_INVALID;
1605                                 }
1606                                 else if(ibuf->mipmap[0]==NULL)
1607                                         IMB_makemipmap(ibuf, 0);
1608
1609                                 while(tzoom < 1.0f && mip<8 && ibuf->mipmap[mip]) {
1610                                         tzoom*= 2.0f;
1611                                         zoomx*= 2.0f;
1612                                         zoomy*= 2.0f;
1613                                         mip++;
1614                                 }
1615                                 if(mip>0)
1616                                         ibuf= ibuf->mipmap[mip-1];
1617                         }
1618
1619                         if(v3d->zbuf) glDisable(GL_DEPTH_TEST);
1620                         glDepthMask(0);
1621
1622                         glEnable(GL_BLEND);
1623                         glBlendFunc(GL_SRC_ALPHA,  GL_ONE_MINUS_SRC_ALPHA);
1624
1625                         glMatrixMode(GL_PROJECTION);
1626                         glPushMatrix();
1627                         glMatrixMode(GL_MODELVIEW);
1628                         glPushMatrix();
1629                         ED_region_pixelspace(ar);
1630
1631                         glPixelZoom(zoomx, zoomy);
1632                         glColor4f(1.0f, 1.0f, 1.0f, 1.0f-bgpic->blend);
1633                         glaDrawPixelsTex(x1, y1, ibuf->x, ibuf->y, GL_UNSIGNED_BYTE, ibuf->rect);
1634
1635                         glPixelZoom(1.0, 1.0);
1636                         glPixelTransferf(GL_ALPHA_SCALE, 1.0f);
1637
1638                         glMatrixMode(GL_PROJECTION);
1639                         glPopMatrix();
1640                         glMatrixMode(GL_MODELVIEW);
1641                         glPopMatrix();
1642
1643                         glDisable(GL_BLEND);
1644
1645                         glDepthMask(1);
1646                         if(v3d->zbuf) glEnable(GL_DEPTH_TEST);
1647
1648                         if(freeibuf)
1649                                 IMB_freeImBuf(freeibuf);
1650                 }
1651         }
1652 }
1653
1654 /* ****************** View3d afterdraw *************** */
1655
1656 typedef struct View3DAfter {
1657         struct View3DAfter *next, *prev;
1658         struct Base *base;
1659         int flag;
1660 } View3DAfter;
1661
1662 /* temp storage of Objects that need to be drawn as last */
1663 void add_view3d_after(ListBase *lb, Base *base, int flag)
1664 {
1665         View3DAfter *v3da= MEM_callocN(sizeof(View3DAfter), "View 3d after");
1666         BLI_addtail(lb, v3da);
1667         v3da->base= base;
1668         v3da->flag= flag;
1669 }
1670
1671 /* disables write in zbuffer and draws it over */
1672 static void view3d_draw_transp(Scene *scene, ARegion *ar, View3D *v3d)
1673 {
1674         View3DAfter *v3da, *next;
1675         
1676         glDepthMask(0);
1677         v3d->transp= TRUE;
1678         
1679         for(v3da= v3d->afterdraw_transp.first; v3da; v3da= next) {
1680                 next= v3da->next;
1681                 draw_object(scene, ar, v3d, v3da->base, v3da->flag);
1682                 BLI_remlink(&v3d->afterdraw_transp, v3da);
1683                 MEM_freeN(v3da);
1684         }
1685         v3d->transp= FALSE;
1686         
1687         glDepthMask(1);
1688         
1689 }
1690
1691 /* clears zbuffer and draws it over */
1692 static void view3d_draw_xray(Scene *scene, ARegion *ar, View3D *v3d, int clear)
1693 {
1694         View3DAfter *v3da, *next;
1695
1696         if(clear && v3d->zbuf)
1697                 glClear(GL_DEPTH_BUFFER_BIT);
1698
1699         v3d->xray= TRUE;
1700         for(v3da= v3d->afterdraw_xray.first; v3da; v3da= next) {
1701                 next= v3da->next;
1702                 draw_object(scene, ar, v3d, v3da->base, v3da->flag);
1703                 BLI_remlink(&v3d->afterdraw_xray, v3da);
1704                 MEM_freeN(v3da);
1705         }
1706         v3d->xray= FALSE;
1707 }
1708
1709
1710 /* clears zbuffer and draws it over */
1711 static void view3d_draw_xraytransp(Scene *scene, ARegion *ar, View3D *v3d, int clear)
1712 {
1713         View3DAfter *v3da, *next;
1714
1715         if(clear && v3d->zbuf)
1716                 glClear(GL_DEPTH_BUFFER_BIT);
1717
1718         v3d->xray= TRUE;
1719         v3d->transp= TRUE;
1720         
1721         for(v3da= v3d->afterdraw_xraytransp.first; v3da; v3da= next) {
1722                 next= v3da->next;
1723                 draw_object(scene, ar, v3d, v3da->base, v3da->flag);
1724                 BLI_remlink(&v3d->afterdraw_xraytransp, v3da);
1725                 MEM_freeN(v3da);
1726         }
1727
1728         v3d->transp= FALSE;
1729         v3d->xray= FALSE;
1730
1731 }
1732
1733 /* *********************** */
1734
1735 /*
1736         In most cases call draw_dupli_objects,
1737         draw_dupli_objects_color was added because when drawing set dupli's
1738         we need to force the color
1739  */
1740
1741 #if 0
1742 int dupli_ob_sort(void *arg1, void *arg2)
1743 {
1744         void *p1= ((DupliObject *)arg1)->ob;
1745         void *p2= ((DupliObject *)arg2)->ob;
1746         int val = 0;
1747         if (p1 < p2)            val = -1;
1748         else if (p1 > p2)       val = 1;
1749         return val;
1750 }
1751 #endif
1752
1753
1754 static DupliObject *dupli_step(DupliObject *dob)
1755 {
1756         while(dob && dob->no_draw)
1757                 dob= dob->next;
1758         return dob;
1759 }
1760
1761 static void draw_dupli_objects_color(Scene *scene, ARegion *ar, View3D *v3d, Base *base, int color)
1762 {
1763         RegionView3D *rv3d= ar->regiondata;
1764         ListBase *lb;
1765         DupliObject *dob_prev= NULL, *dob, *dob_next= NULL;
1766         Base tbase;
1767         BoundBox bb, *bb_tmp; /* use a copy because draw_object, calls clear_mesh_caches */
1768         GLuint displist=0;
1769         short transflag, use_displist= -1;      /* -1 is initialize */
1770         char dt, dtx;
1771         
1772         if (base->object->restrictflag & OB_RESTRICT_VIEW) return;
1773         
1774         tbase.flag= OB_FROMDUPLI|base->flag;
1775         lb= object_duplilist(scene, base->object);
1776         // BLI_sortlist(lb, dupli_ob_sort); // might be nice to have if we have a dupli list with mixed objects.
1777
1778         dob=dupli_step(lb->first);
1779         if(dob) dob_next= dupli_step(dob->next);
1780
1781         for( ; dob ; dob_prev= dob, dob= dob_next, dob_next= dob_next ? dupli_step(dob_next->next) : NULL) {
1782                 tbase.object= dob->ob;
1783
1784                 /* extra service: draw the duplicator in drawtype of parent */
1785                 /* MIN2 for the drawtype to allow bounding box objects in groups for lods */
1786                 dt= tbase.object->dt;   tbase.object->dt= MIN2(tbase.object->dt, base->object->dt);
1787                 dtx= tbase.object->dtx; tbase.object->dtx= base->object->dtx;
1788
1789                 /* negative scale flag has to propagate */
1790                 transflag= tbase.object->transflag;
1791                 if(base->object->transflag & OB_NEG_SCALE)
1792                         tbase.object->transflag ^= OB_NEG_SCALE;
1793
1794                 UI_ThemeColorBlend(color, TH_BACK, 0.5);
1795
1796                 /* generate displist, test for new object */
1797                 if(dob_prev && dob_prev->ob != dob->ob) {
1798                         if(use_displist==1)
1799                                 glDeleteLists(displist, 1);
1800
1801                         use_displist= -1;
1802                 }
1803
1804                 /* generate displist */
1805                 if(use_displist == -1) {
1806
1807                         /* note, since this was added, its checked dob->type==OB_DUPLIGROUP
1808                          * however this is very slow, it was probably needed for the NLA
1809                          * offset feature (used in group-duplicate.blend but no longer works in 2.5)
1810                          * so for now it should be ok to - campbell */
1811
1812                         if(             (dob_next==NULL || dob_next->ob != dob->ob) || /* if this is the last no need  to make a displist */
1813                                         (dob->ob->type == OB_LAMP) || /* lamp drawing messes with matrices, could be handled smarter... but this works */
1814                                         (dob->type == OB_DUPLIGROUP && dob->animated) ||
1815                                         !(bb_tmp= object_get_boundbox(dob->ob))
1816                         ) {
1817                                 // printf("draw_dupli_objects_color: skipping displist for %s\n", dob->ob->id.name+2);
1818                                 use_displist= 0;
1819                         }
1820                         else {
1821                                 // printf("draw_dupli_objects_color: using displist for %s\n", dob->ob->id.name+2);
1822                                 bb= *bb_tmp; /* must make a copy  */
1823
1824                                 /* disable boundbox check for list creation */
1825                                 object_boundbox_flag(dob->ob, OB_BB_DISABLED, 1);
1826                                 /* need this for next part of code */
1827                                 unit_m4(dob->ob->obmat);        /* obmat gets restored */
1828
1829                                 displist= glGenLists(1);
1830                                 glNewList(displist, GL_COMPILE);
1831                                 draw_object(scene, ar, v3d, &tbase, DRAW_CONSTCOLOR);
1832                                 glEndList();
1833
1834                                 use_displist= 1;
1835                                 object_boundbox_flag(dob->ob, OB_BB_DISABLED, 0);
1836                         }
1837                 }
1838                 if(use_displist) {
1839                         glMultMatrixf(dob->mat);
1840                         if(ED_view3d_boundbox_clip(rv3d, dob->mat, &bb))
1841                                 glCallList(displist);
1842                         glLoadMatrixf(rv3d->viewmat);
1843                 }
1844                 else {
1845                         copy_m4_m4(dob->ob->obmat, dob->mat);
1846                         draw_object(scene, ar, v3d, &tbase, DRAW_CONSTCOLOR);
1847                 }
1848
1849                 tbase.object->dt= dt;
1850                 tbase.object->dtx= dtx;
1851                 tbase.object->transflag= transflag;
1852         }
1853         
1854         /* Transp afterdraw disabled, afterdraw only stores base pointers, and duplis can be same obj */
1855         
1856         free_object_duplilist(lb);      /* does restore */
1857         
1858         if(use_displist)
1859                 glDeleteLists(displist, 1);
1860 }
1861
1862 static void draw_dupli_objects(Scene *scene, ARegion *ar, View3D *v3d, Base *base)
1863 {
1864         /* define the color here so draw_dupli_objects_color can be called
1865         * from the set loop */
1866         
1867         int color= (base->flag & SELECT)?TH_SELECT:TH_WIRE;
1868         /* debug */
1869         if(base->object->dup_group && base->object->dup_group->id.us<1)
1870                 color= TH_REDALERT;
1871         
1872         draw_dupli_objects_color(scene, ar, v3d, base, color);
1873 }
1874
1875 void view3d_update_depths_rect(ARegion *ar, ViewDepths *d, rcti *rect)
1876 {
1877         int x, y, w, h; 
1878         rcti r;
1879         /* clamp rect by area */
1880
1881         r.xmin= 0;
1882         r.xmax= ar->winx-1;
1883         r.ymin= 0;
1884         r.ymax= ar->winy-1;
1885
1886         /* Constrain rect to depth bounds */
1887         BLI_isect_rcti(&r, rect, rect);
1888
1889         /* assign values to compare with the ViewDepths */
1890         x= rect->xmin;
1891         y= rect->ymin;
1892
1893         w= rect->xmax - rect->xmin;
1894         h= rect->ymax - rect->ymin;
1895
1896         if(w <= 0 || h <= 0) {
1897                 if(d->depths)
1898                         MEM_freeN(d->depths);
1899                 d->depths= NULL;
1900
1901                 d->damaged= FALSE;
1902         }
1903         else if(        d->w != w ||
1904                 d->h != h ||
1905                 d->x != x ||
1906                 d->y != y ||
1907                 d->depths==NULL
1908         ) {
1909                 d->x= x;
1910                 d->y= y;
1911                 d->w= w;
1912                 d->h= h;
1913
1914                 if(d->depths)
1915                         MEM_freeN(d->depths);
1916
1917                 d->depths= MEM_mallocN(sizeof(float)*d->w*d->h,"View depths Subset");
1918                 
1919                 d->damaged= TRUE;
1920         }
1921
1922         if(d->damaged) {
1923                 glReadPixels(ar->winrct.xmin+d->x,ar->winrct.ymin+d->y, d->w,d->h, GL_DEPTH_COMPONENT,GL_FLOAT, d->depths);
1924                 glGetDoublev(GL_DEPTH_RANGE,d->depth_range);
1925                 d->damaged= FALSE;
1926         }
1927 }
1928
1929 /* note, with nouveau drivers the glReadPixels() is very slow. [#24339] */
1930 void ED_view3d_depth_update(ARegion *ar)
1931 {
1932         RegionView3D *rv3d= ar->regiondata;
1933         
1934         /* Create storage for, and, if necessary, copy depth buffer */
1935         if(!rv3d->depths) rv3d->depths= MEM_callocN(sizeof(ViewDepths),"ViewDepths");
1936         if(rv3d->depths) {
1937                 ViewDepths *d= rv3d->depths;
1938                 if(d->w != ar->winx ||
1939                    d->h != ar->winy ||
1940                    !d->depths) {
1941                         d->w= ar->winx;
1942                         d->h= ar->winy;
1943                         if(d->depths)
1944                                 MEM_freeN(d->depths);
1945                         d->depths= MEM_mallocN(sizeof(float)*d->w*d->h,"View depths");
1946                         d->damaged= 1;
1947                 }
1948                 
1949                 if(d->damaged) {
1950                         glReadPixels(ar->winrct.xmin,ar->winrct.ymin,d->w,d->h,
1951                                                  GL_DEPTH_COMPONENT,GL_FLOAT, d->depths);
1952                         
1953                         glGetDoublev(GL_DEPTH_RANGE,d->depth_range);
1954                         
1955                         d->damaged= 0;
1956                 }
1957         }
1958 }
1959
1960 /* utility function to find the closest Z value, use for autodepth */
1961 float view3d_depth_near(ViewDepths *d)
1962 {
1963         /* convert to float for comparisons */
1964         const float near= (float)d->depth_range[0];
1965         const float far_real= (float)d->depth_range[1];
1966         float far= far_real;
1967
1968         const float *depths= d->depths;
1969         float depth= FLT_MAX;
1970         int i= (int)d->w * (int)d->h; /* cast to avoid short overflow */
1971
1972         /* far is both the starting 'far' value
1973          * and the closest value found. */      
1974         while(i--) {
1975                 depth= *depths++;
1976                 if((depth < far) && (depth > near)) {
1977                         far= depth;
1978                 }
1979         }
1980
1981         return far == far_real ? FLT_MAX : far;
1982 }
1983
1984 void draw_depth_gpencil(Scene *scene, ARegion *ar, View3D *v3d)
1985 {
1986         short zbuf= v3d->zbuf;
1987         RegionView3D *rv3d= ar->regiondata;
1988
1989         setwinmatrixview3d(ar, v3d, NULL);      /* 0= no pick rect */
1990         setviewmatrixview3d(scene, v3d, rv3d);  /* note: calls where_is_object for camera... */
1991
1992         mul_m4_m4m4(rv3d->persmat, rv3d->viewmat, rv3d->winmat);
1993         invert_m4_m4(rv3d->persinv, rv3d->persmat);
1994         invert_m4_m4(rv3d->viewinv, rv3d->viewmat);
1995
1996         glClear(GL_DEPTH_BUFFER_BIT);
1997
1998         glLoadMatrixf(rv3d->viewmat);
1999
2000         v3d->zbuf= TRUE;
2001         glEnable(GL_DEPTH_TEST);
2002
2003         draw_gpencil_view3d(scene, v3d, ar, 1);
2004         
2005         v3d->zbuf= zbuf;
2006
2007 }
2008
2009 void draw_depth(Scene *scene, ARegion *ar, View3D *v3d, int (* func)(void *))
2010 {
2011         RegionView3D *rv3d= ar->regiondata;
2012         Base *base;
2013         short zbuf= v3d->zbuf;
2014         short flag= v3d->flag;
2015         float glalphaclip= U.glalphaclip;
2016         int obcenter_dia= U.obcenter_dia;
2017         /* temp set drawtype to solid */
2018         
2019         /* Setting these temporarily is not nice */
2020         v3d->flag &= ~V3D_SELECT_OUTLINE;
2021         U.glalphaclip = 0.5; /* not that nice but means we wont zoom into billboards */
2022         U.obcenter_dia= 0;
2023         
2024         setwinmatrixview3d(ar, v3d, NULL);      /* 0= no pick rect */
2025         setviewmatrixview3d(scene, v3d, rv3d);  /* note: calls where_is_object for camera... */
2026         
2027         mul_m4_m4m4(rv3d->persmat, rv3d->viewmat, rv3d->winmat);
2028         invert_m4_m4(rv3d->persinv, rv3d->persmat);
2029         invert_m4_m4(rv3d->viewinv, rv3d->viewmat);
2030         
2031         glClear(GL_DEPTH_BUFFER_BIT);
2032         
2033         glLoadMatrixf(rv3d->viewmat);
2034 //      persp(PERSP_STORE);  // store correct view for persp(PERSP_VIEW) calls
2035         
2036         if(rv3d->rflag & RV3D_CLIPPING) {
2037                 view3d_set_clipping(rv3d);
2038         }
2039         
2040         v3d->zbuf= TRUE;
2041         glEnable(GL_DEPTH_TEST);
2042         
2043         /* draw set first */
2044         if(scene->set) {
2045                 Scene *sce_iter;
2046                 for(SETLOOPER(scene->set, sce_iter, base)) {
2047                         if(v3d->lay & base->lay) {
2048                                 if (func == NULL || func(base)) {
2049                                         draw_object(scene, ar, v3d, base, 0);
2050                                         if(base->object->transflag & OB_DUPLI) {
2051                                                 draw_dupli_objects_color(scene, ar, v3d, base, TH_WIRE);
2052                                         }
2053                                 }
2054                         }
2055                 }
2056         }
2057         
2058         for(base= scene->base.first; base; base= base->next) {
2059                 if(v3d->lay & base->lay) {
2060                         if (func == NULL || func(base)) {
2061                                 /* dupli drawing */
2062                                 if(base->object->transflag & OB_DUPLI) {
2063                                         draw_dupli_objects(scene, ar, v3d, base);
2064                                 }
2065                                 draw_object(scene, ar, v3d, base, 0);
2066                         }
2067                 }
2068         }
2069         
2070         /* this isnt that nice, draw xray objects as if they are normal */
2071         if (    v3d->afterdraw_transp.first ||
2072                         v3d->afterdraw_xray.first || 
2073                         v3d->afterdraw_xraytransp.first
2074         ) {
2075                 View3DAfter *v3da, *next;
2076                 int mask_orig;
2077
2078                 v3d->xray= TRUE;
2079                 
2080                 /* transp materials can change the depth mask, see #21388 */
2081                 glGetIntegerv(GL_DEPTH_WRITEMASK, &mask_orig);
2082
2083
2084                 if(v3d->afterdraw_xray.first || v3d->afterdraw_xraytransp.first) {
2085                         glDepthFunc(GL_ALWAYS); /* always write into the depth bufer, overwriting front z values */
2086                         for(v3da= v3d->afterdraw_xray.first; v3da; v3da= next) {
2087                                 next= v3da->next;
2088                                 draw_object(scene, ar, v3d, v3da->base, 0);
2089                         }
2090                         glDepthFunc(GL_LEQUAL); /* Now write the depth buffer normally */
2091                 }
2092
2093                 /* draw 3 passes, transp/xray/xraytransp */
2094                 v3d->xray= FALSE;
2095                 v3d->transp= TRUE;
2096                 for(v3da= v3d->afterdraw_transp.first; v3da; v3da= next) {
2097                         next= v3da->next;
2098                         draw_object(scene, ar, v3d, v3da->base, 0);
2099                         BLI_remlink(&v3d->afterdraw_transp, v3da);
2100                         MEM_freeN(v3da);
2101                 }
2102
2103                 v3d->xray= TRUE;
2104                 v3d->transp= FALSE;  
2105                 for(v3da= v3d->afterdraw_xray.first; v3da; v3da= next) {
2106                         next= v3da->next;
2107                         draw_object(scene, ar, v3d, v3da->base, 0);
2108                         BLI_remlink(&v3d->afterdraw_xray, v3da);
2109                         MEM_freeN(v3da);
2110                 }
2111
2112                 v3d->xray= TRUE;
2113                 v3d->transp= TRUE;
2114                 for(v3da= v3d->afterdraw_xraytransp.first; v3da; v3da= next) {
2115                         next= v3da->next;
2116                         draw_object(scene, ar, v3d, v3da->base, 0);
2117                         BLI_remlink(&v3d->afterdraw_xraytransp, v3da);
2118                         MEM_freeN(v3da);
2119                 }
2120
2121                 
2122                 v3d->xray= FALSE;
2123                 v3d->transp= FALSE;
2124
2125                 glDepthMask(mask_orig);
2126         }
2127         
2128         if(rv3d->rflag & RV3D_CLIPPING)
2129                 view3d_clr_clipping();
2130         
2131         v3d->zbuf = zbuf;
2132         if(!v3d->zbuf) glDisable(GL_DEPTH_TEST);
2133
2134         U.glalphaclip = glalphaclip;
2135         v3d->flag = flag;
2136         U.obcenter_dia= obcenter_dia;
2137 }
2138
2139 typedef struct View3DShadow {
2140         struct View3DShadow *next, *prev;
2141         GPULamp *lamp;
2142 } View3DShadow;
2143
2144 static void gpu_render_lamp_update(Scene *scene, View3D *v3d, Object *ob, Object *par, float obmat[][4], ListBase *shadows)
2145 {
2146         GPULamp *lamp;
2147         Lamp *la = (Lamp*)ob->data;
2148         View3DShadow *shadow;
2149         
2150         lamp = GPU_lamp_from_blender(scene, ob, par);
2151         
2152         if(lamp) {
2153                 GPU_lamp_update(lamp, ob->lay, (ob->restrictflag & OB_RESTRICT_RENDER), obmat);
2154                 GPU_lamp_update_colors(lamp, la->r, la->g, la->b, la->energy);
2155                 
2156                 if((ob->lay & v3d->lay) && GPU_lamp_has_shadow_buffer(lamp)) {
2157                         shadow= MEM_callocN(sizeof(View3DShadow), "View3DShadow");
2158                         shadow->lamp = lamp;
2159                         BLI_addtail(shadows, shadow);
2160                 }
2161         }
2162 }
2163
2164 static void gpu_update_lamps_shadows(Scene *scene, View3D *v3d)
2165 {
2166         ListBase shadows;
2167         View3DShadow *shadow;
2168         Scene *sce_iter;
2169         Base *base;
2170         Object *ob;
2171         
2172         shadows.first= shadows.last= NULL;
2173         
2174         /* update lamp transform and gather shadow lamps */
2175         for(SETLOOPER(scene, sce_iter, base)) {
2176                 ob= base->object;
2177                 
2178                 if(ob->type == OB_LAMP)
2179                         gpu_render_lamp_update(scene, v3d, ob, NULL, ob->obmat, &shadows);
2180                 
2181                 if (ob->transflag & OB_DUPLI) {
2182                         DupliObject *dob;
2183                         ListBase *lb = object_duplilist(scene, ob);
2184                         
2185                         for(dob=lb->first; dob; dob=dob->next)
2186                                 if(dob->ob->type==OB_LAMP)
2187                                         gpu_render_lamp_update(scene, v3d, dob->ob, ob, dob->mat, &shadows);
2188                         
2189                         free_object_duplilist(lb);
2190                 }
2191         }
2192         
2193         /* render shadows after updating all lamps, nested object_duplilist
2194                 * don't work correct since it's replacing object matrices */
2195         for(shadow=shadows.first; shadow; shadow=shadow->next) {
2196                 /* this needs to be done better .. */
2197                 float viewmat[4][4], winmat[4][4];
2198                 int drawtype, lay, winsize, flag2=v3d->flag2;
2199                 ARegion ar= {NULL};
2200                 RegionView3D rv3d= {{{0}}};
2201                 
2202                 drawtype= v3d->drawtype;
2203                 lay= v3d->lay;
2204                 
2205                 v3d->drawtype = OB_SOLID;
2206                 v3d->lay &= GPU_lamp_shadow_layer(shadow->lamp);
2207                 v3d->flag2 &= ~V3D_SOLID_TEX;
2208                 v3d->flag2 |= V3D_RENDER_OVERRIDE | V3D_RENDER_SHADOW;
2209                 
2210                 GPU_lamp_shadow_buffer_bind(shadow->lamp, viewmat, &winsize, winmat);
2211
2212                 ar.regiondata= &rv3d;
2213                 ar.regiontype= RGN_TYPE_WINDOW;
2214                 rv3d.persp= RV3D_CAMOB;
2215                 copy_m4_m4(rv3d.winmat, winmat);
2216                 copy_m4_m4(rv3d.viewmat, viewmat);
2217                 invert_m4_m4(rv3d.viewinv, rv3d.viewmat);
2218                 mul_m4_m4m4(rv3d.persmat, rv3d.viewmat, rv3d.winmat);
2219                 invert_m4_m4(rv3d.persinv, rv3d.viewinv);
2220
2221                 ED_view3d_draw_offscreen(scene, v3d, &ar, winsize, winsize, viewmat, winmat);
2222                 GPU_lamp_shadow_buffer_unbind(shadow->lamp);
2223                 
2224                 v3d->drawtype= drawtype;
2225                 v3d->lay= lay;
2226                 v3d->flag2 = flag2;
2227         }
2228         
2229         BLI_freelistN(&shadows);
2230 }
2231
2232 /* *********************** customdata **************** */
2233
2234 CustomDataMask ED_view3d_datamask(Scene *scene, View3D *v3d)
2235 {
2236         CustomDataMask mask= 0;
2237
2238         if(ELEM(v3d->drawtype, OB_TEXTURE, OB_MATERIAL) || ((v3d->drawtype == OB_SOLID) && (v3d->flag2 & V3D_SOLID_TEX))) {
2239                 mask |= CD_MASK_MTFACE | CD_MASK_MCOL;
2240
2241                 if(scene_use_new_shading_nodes(scene)) {
2242                         if(v3d->drawtype == OB_MATERIAL)
2243                                 mask |= CD_MASK_ORCO;
2244                 }
2245                 else {
2246                         if(scene->gm.matmode == GAME_MAT_GLSL)
2247                                 mask |= CD_MASK_ORCO;
2248                 }
2249         }
2250
2251         return mask;
2252 }
2253 /* goes over all modes and view3d settings */
2254 CustomDataMask ED_viewedit_datamask(bScreen *screen)
2255 {
2256         Scene *scene= screen->scene;
2257         Object *ob= scene->basact ? scene->basact->object : NULL;
2258         CustomDataMask mask = CD_MASK_BAREMESH;
2259         ScrArea *sa;
2260         
2261         /* check if we need tfaces & mcols due to face select or texture paint */
2262         if(paint_facesel_test(ob) || (ob && ob->mode & OB_MODE_TEXTURE_PAINT))
2263                 mask |= CD_MASK_MTFACE | CD_MASK_MCOL;
2264         
2265         /* check if we need tfaces & mcols due to view mode */
2266         for(sa = screen->areabase.first; sa; sa = sa->next) {
2267                 if(sa->spacetype == SPACE_VIEW3D) {
2268                         mask |= ED_view3d_datamask(scene, (View3D *)sa->spacedata.first);
2269                 }
2270         }
2271         
2272         /* check if we need mcols due to vertex paint or weightpaint */
2273         if(ob) {
2274                 if(ob->mode & OB_MODE_VERTEX_PAINT)
2275                         mask |= CD_MASK_MCOL;
2276                 if(ob->mode & OB_MODE_WEIGHT_PAINT)
2277                         mask |= CD_MASK_WEIGHT_MCOL;
2278         }
2279
2280         return mask;
2281 }
2282
2283 static void view3d_main_area_setup_view(Scene *scene, View3D *v3d, ARegion *ar, float viewmat[][4], float winmat[][4])
2284 {
2285         RegionView3D *rv3d= ar->regiondata;
2286
2287         /* setup window matrices */
2288         if(winmat)
2289                 copy_m4_m4(rv3d->winmat, winmat);
2290         else
2291                 setwinmatrixview3d(ar, v3d, NULL); /* NULL= no pickrect */
2292         
2293         /* setup view matrix */
2294         if(viewmat)
2295                 copy_m4_m4(rv3d->viewmat, viewmat);
2296         else
2297                 setviewmatrixview3d(scene, v3d, rv3d);  /* note: calls where_is_object for camera... */
2298         
2299         /* update utilitity matrices */
2300         mul_m4_m4m4(rv3d->persmat, rv3d->viewmat, rv3d->winmat);
2301         invert_m4_m4(rv3d->persinv, rv3d->persmat);
2302         invert_m4_m4(rv3d->viewinv, rv3d->viewmat);
2303
2304         /* calculate pixelsize factor once, is used for lamps and obcenters */
2305         {
2306                 /* note:  '1.0f / len_v3(v1)'  replaced  'len_v3(rv3d->viewmat[0])'
2307                  * because of float point precision problems at large values [#23908] */
2308                 float v1[3], v2[3];
2309                 float len1, len2;
2310
2311                 v1[0]= rv3d->persmat[0][0];
2312                 v1[1]= rv3d->persmat[1][0];
2313                 v1[2]= rv3d->persmat[2][0];
2314
2315                 v2[0]= rv3d->persmat[0][1];
2316                 v2[1]= rv3d->persmat[1][1];
2317                 v2[2]= rv3d->persmat[2][1];
2318                 
2319                 len1= 1.0f / len_v3(v1);
2320                 len2= 1.0f / len_v3(v2);
2321
2322                 rv3d->pixsize = (2.0f * MAX2(len1, len2)) / (float)MAX2(ar->winx, ar->winy);
2323         }
2324
2325         /* set for opengl */
2326         glMatrixMode(GL_PROJECTION);
2327         glLoadMatrixf(rv3d->winmat);
2328         glMatrixMode(GL_MODELVIEW);
2329         glLoadMatrixf(rv3d->viewmat);
2330 }
2331
2332 void ED_view3d_draw_offscreen(Scene *scene, View3D *v3d, ARegion *ar, int winx, int winy, float viewmat[][4], float winmat[][4])
2333 {
2334         RegionView3D *rv3d= ar->regiondata;
2335         Base *base;
2336         float backcol[3];
2337         int bwinx, bwiny;
2338         rcti brect;
2339
2340         glPushMatrix();
2341
2342         /* set temporary new size */
2343         bwinx= ar->winx;
2344         bwiny= ar->winy;
2345         brect= ar->winrct;
2346         
2347         ar->winx= winx;
2348         ar->winy= winy; 
2349         ar->winrct.xmin= 0;
2350         ar->winrct.ymin= 0;
2351         ar->winrct.xmax= winx;
2352         ar->winrct.ymax= winy;
2353         
2354         
2355         /* set flags */
2356         G.f |= G_RENDER_OGL;
2357
2358         /* free images which can have changed on frame-change
2359          * warning! can be slow so only free animated images - campbell */
2360         GPU_free_images_anim();
2361         
2362         /* shadow buffers, before we setup matrices */
2363         if(draw_glsl_material(scene, NULL, v3d, v3d->drawtype))
2364                 gpu_update_lamps_shadows(scene, v3d);
2365
2366         /* set background color, fallback on the view background color */
2367         if(scene->world) {
2368                 if(scene->r.color_mgt_flag & R_COLOR_MANAGEMENT)
2369                         linearrgb_to_srgb_v3_v3(backcol, &scene->world->horr);
2370                 else
2371                         copy_v3_v3(backcol, &scene->world->horr);
2372                 glClearColor(backcol[0], backcol[1], backcol[2], 0.0);
2373         }
2374         else {
2375                 UI_ThemeClearColor(TH_BACK);    
2376         }
2377
2378         glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
2379
2380         /* setup view matrices */
2381         view3d_main_area_setup_view(scene, v3d, ar, viewmat, winmat);
2382
2383         if(rv3d->rflag & RV3D_CLIPPING)
2384                 view3d_draw_clipping(rv3d);
2385
2386         /* set zbuffer */
2387         if(v3d->drawtype > OB_WIRE) {
2388                 v3d->zbuf= TRUE;
2389                 glEnable(GL_DEPTH_TEST);
2390         }
2391         else
2392                 v3d->zbuf= FALSE;
2393
2394         if(rv3d->rflag & RV3D_CLIPPING)
2395                 view3d_set_clipping(rv3d);
2396
2397         /* draw set first */
2398         if(scene->set) {
2399                 Scene *sce_iter;
2400                 for(SETLOOPER(scene->set, sce_iter, base)) {
2401                         if(v3d->lay & base->lay) {
2402                                 UI_ThemeColorBlend(TH_WIRE, TH_BACK, 0.6f);
2403                                 draw_object(scene, ar, v3d, base, DRAW_CONSTCOLOR|DRAW_SCENESET);
2404                                 
2405                                 if(base->object->transflag & OB_DUPLI)
2406                                         draw_dupli_objects_color(scene, ar, v3d, base, TH_WIRE);
2407                         }
2408                 }
2409         }
2410         
2411         /* then draw not selected and the duplis, but skip editmode object */
2412         for(base= scene->base.first; base; base= base->next) {
2413                 if(v3d->lay & base->lay) {
2414                         /* dupli drawing */
2415                         if(base->object->transflag & OB_DUPLI)
2416                                 draw_dupli_objects(scene, ar, v3d, base);
2417
2418                         draw_object(scene, ar, v3d, base, 0);
2419                 }
2420         }
2421
2422         /* must be before xray draw which clears the depth buffer */
2423         if(v3d->zbuf) glDisable(GL_DEPTH_TEST);
2424         draw_gpencil_view3d(scene, v3d, ar, 1);
2425         if(v3d->zbuf) glEnable(GL_DEPTH_TEST);
2426
2427         /* transp and X-ray afterdraw stuff */
2428         if(v3d->afterdraw_transp.first)         view3d_draw_transp(scene, ar, v3d);
2429         if(v3d->afterdraw_xray.first)           view3d_draw_xray(scene, ar, v3d, 1);    // clears zbuffer if it is used!
2430         if(v3d->afterdraw_xraytransp.first)     view3d_draw_xraytransp(scene, ar, v3d, 1);
2431
2432         if(rv3d->rflag & RV3D_CLIPPING)
2433                 view3d_clr_clipping();
2434
2435         /* cleanup */
2436         if(v3d->zbuf) {
2437                 v3d->zbuf= FALSE;
2438                 glDisable(GL_DEPTH_TEST);
2439         }
2440
2441         /* draw grease-pencil stuff */
2442         ED_region_pixelspace(ar);
2443
2444         /* draw grease-pencil stuff - needed to get paint-buffer shown too (since it's 2D) */
2445         draw_gpencil_view3d(scene, v3d, ar, 0);
2446
2447         /* freeing the images again here could be done after the operator runs, leaving for now */
2448         GPU_free_images_anim();
2449
2450         /* restore size */
2451         ar->winx= bwinx;
2452         ar->winy= bwiny;
2453         ar->winrct = brect;
2454
2455         glPopMatrix();
2456
2457         glColor4ub(255, 255, 255, 255); // XXX, without this the sequencer flickers with opengl draw enabled, need to find out why - campbell
2458
2459         G.f &= ~G_RENDER_OGL;
2460 }
2461
2462 /* utility func for ED_view3d_draw_offscreen */
2463 ImBuf *ED_view3d_draw_offscreen_imbuf(Scene *scene, View3D *v3d, ARegion *ar, int sizex, int sizey, unsigned int flag, char err_out[256])
2464 {
2465         RegionView3D *rv3d= ar->regiondata;
2466         ImBuf *ibuf;
2467         GPUOffScreen *ofs;
2468         
2469         /* state changes make normal drawing go weird otherwise */
2470         glPushAttrib(GL_LIGHTING_BIT);
2471
2472         /* bind */
2473         ofs= GPU_offscreen_create(sizex, sizey, err_out);
2474         if(ofs == NULL)
2475                 return NULL;
2476
2477         GPU_offscreen_bind(ofs);
2478
2479         /* render 3d view */
2480         if(rv3d->persp==RV3D_CAMOB && v3d->camera) {
2481                 CameraParams params;
2482
2483                 camera_params_init(&params);
2484                 camera_params_from_object(&params, v3d->camera);
2485                 camera_params_compute_viewplane(&params, sizex, sizey, scene->r.xasp, scene->r.yasp);
2486                 camera_params_compute_matrix(&params);
2487
2488                 ED_view3d_draw_offscreen(scene, v3d, ar, sizex, sizey, NULL, params.winmat);
2489         }
2490         else {
2491                 ED_view3d_draw_offscreen(scene, v3d, ar, sizex, sizey, NULL, NULL);
2492         }
2493
2494         /* read in pixels & stamp */
2495         ibuf= IMB_allocImBuf(sizex, sizey, 32, flag);
2496
2497         if(ibuf->rect_float)
2498                 GPU_offscreen_read_pixels(ofs, GL_FLOAT, ibuf->rect_float);
2499         else if(ibuf->rect)
2500                 GPU_offscreen_read_pixels(ofs, GL_UNSIGNED_BYTE, ibuf->rect);
2501         
2502         //if((scene->r.stamp & R_STAMP_ALL) && (scene->r.stamp & R_STAMP_DRAW))
2503         //      BKE_stamp_buf(scene, NULL, rr->rectf, rr->rectx, rr->recty, 4);
2504
2505         /* unbind */
2506         GPU_offscreen_unbind(ofs);
2507         GPU_offscreen_free(ofs);
2508
2509         glPopAttrib();
2510         
2511         if(ibuf->rect_float && ibuf->rect)
2512                 IMB_rect_from_float(ibuf);
2513         
2514         return ibuf;
2515 }
2516
2517 /* creates own 3d views, used by the sequencer */
2518 ImBuf *ED_view3d_draw_offscreen_imbuf_simple(Scene *scene, Object *camera, int width, int height, unsigned int flag, int drawtype, char err_out[256])
2519 {
2520         View3D v3d= {NULL};
2521         ARegion ar= {NULL};
2522         RegionView3D rv3d= {{{0}}};
2523
2524         /* connect data */
2525         v3d.regionbase.first= v3d.regionbase.last= &ar;
2526         ar.regiondata= &rv3d;
2527         ar.regiontype= RGN_TYPE_WINDOW;
2528
2529         v3d.camera= camera;
2530         v3d.lay= scene->lay;
2531         v3d.drawtype = drawtype;
2532         v3d.flag2 = V3D_RENDER_OVERRIDE;
2533
2534         rv3d.persp= RV3D_CAMOB;
2535
2536         copy_m4_m4(rv3d.viewinv, v3d.camera->obmat);
2537         normalize_m4(rv3d.viewinv);
2538         invert_m4_m4(rv3d.viewmat, rv3d.viewinv);
2539
2540         {
2541                 CameraParams params;
2542
2543                 camera_params_init(&params);
2544                 camera_params_from_object(&params, v3d.camera);
2545                 camera_params_compute_viewplane(&params, width, height, scene->r.xasp, scene->r.yasp);
2546                 camera_params_compute_matrix(&params);
2547
2548                 copy_m4_m4(rv3d.winmat, params.winmat);
2549                 v3d.near= params.clipsta;
2550                 v3d.far= params.clipend;
2551                 v3d.lens= params.lens;
2552         }
2553
2554         mul_m4_m4m4(rv3d.persmat, rv3d.viewmat, rv3d.winmat);
2555         invert_m4_m4(rv3d.persinv, rv3d.viewinv);
2556
2557         return ED_view3d_draw_offscreen_imbuf(scene, &v3d, &ar, width, height, flag, err_out);
2558
2559         // seq_view3d_cb(scene, cfra, render_size, seqrectx, seqrecty);
2560 }
2561
2562
2563 /* NOTE: the info that this uses is updated in ED_refresh_viewport_fps(), 
2564  * which currently gets called during SCREEN_OT_animation_step.
2565  */
2566 static void draw_viewport_fps(Scene *scene, ARegion *ar)
2567 {
2568         ScreenFrameRateInfo *fpsi= scene->fps_info;
2569         float fps;
2570         char printable[16];
2571         int i, tot;
2572         
2573         if (!fpsi || !fpsi->lredrawtime || !fpsi->redrawtime)
2574                 return;
2575         
2576         printable[0] = '\0';
2577         
2578 #if 0
2579         /* this is too simple, better do an average */
2580         fps = (float)(1.0/(fpsi->lredrawtime-fpsi->redrawtime))
2581 #else
2582         fpsi->redrawtimes_fps[fpsi->redrawtime_index] = (float)(1.0/(fpsi->lredrawtime-fpsi->redrawtime));
2583         
2584         for (i=0, tot=0, fps=0.0f ; i < REDRAW_FRAME_AVERAGE ; i++) {
2585                 if (fpsi->redrawtimes_fps[i]) {
2586                         fps += fpsi->redrawtimes_fps[i];
2587                         tot++;
2588                 }
2589         }
2590         if (tot) {
2591                 fpsi->redrawtime_index = (fpsi->redrawtime_index + 1) % REDRAW_FRAME_AVERAGE;
2592                 
2593                 //fpsi->redrawtime_index++;
2594                 //if (fpsi->redrawtime >= REDRAW_FRAME_AVERAGE)
2595                 //      fpsi->redrawtime = 0;
2596                 
2597                 fps = fps / tot;
2598         }
2599 #endif
2600
2601         /* is this more then half a frame behind? */
2602         if (fps+0.5f < (float)(FPS)) {
2603                 UI_ThemeColor(TH_REDALERT);
2604                 BLI_snprintf(printable, sizeof(printable), "fps: %.2f", fps);
2605         } 
2606         else {
2607                 UI_ThemeColor(TH_TEXT_HI);
2608                 BLI_snprintf(printable, sizeof(printable), "fps: %i", (int)(fps+0.5f));
2609         }
2610         
2611         BLF_draw_default_ascii(22,  ar->winy-17, 0.0f, printable, sizeof(printable)-1);
2612 }
2613
2614 static int view3d_main_area_draw_engine(const bContext *C, ARegion *ar)
2615 {
2616         Scene *scene= CTX_data_scene(C);
2617         View3D *v3d = CTX_wm_view3d(C);
2618         RegionView3D *rv3d= CTX_wm_region_view3d(C);
2619         RenderEngineType *type;
2620
2621         if(!rv3d->render_engine) {
2622                 type= RE_engines_find(scene->r.engine);
2623
2624                 if(!(type->view_update && type->view_draw))
2625                         return 0;
2626
2627                 rv3d->render_engine= RE_engine_create(type);
2628                 type->view_update(rv3d->render_engine, C);
2629         }
2630
2631         view3d_main_area_setup_view(scene, v3d, ar, NULL, NULL);
2632
2633         glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
2634         glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
2635
2636         ED_region_pixelspace(ar);
2637
2638         type= rv3d->render_engine->type;
2639         type->view_draw(rv3d->render_engine, C);
2640
2641         return 1;
2642 }
2643
2644 static void view3d_main_area_draw_engine_info(RegionView3D *rv3d, ARegion *ar)
2645 {
2646         rcti rect;
2647         const int header_height = 18;
2648
2649         if(!rv3d->render_engine || !rv3d->render_engine->text)
2650                 return;
2651         
2652         /* background box */
2653         rect= ar->winrct;
2654         rect.xmin= 0;
2655         rect.ymin= ar->winrct.ymax - ar->winrct.ymin - header_height;
2656         rect.xmax= ar->winrct.xmax - ar->winrct.xmin;
2657         rect.ymax= ar->winrct.ymax - ar->winrct.ymin;
2658
2659         glEnable(GL_BLEND);
2660         glBlendFunc(GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA);
2661         glColor4f(0.0f, 0.0f, 0.0f, 0.25f);
2662         glRecti(rect.xmin, rect.ymin, rect.xmax+1, rect.ymax+1);
2663         glDisable(GL_BLEND);
2664         
2665         /* text */
2666         UI_ThemeColor(TH_TEXT_HI);
2667         UI_DrawString(12, rect.ymin + 5, rv3d->render_engine->text);
2668 }
2669
2670 /* warning: this function has duplicate drawing in ED_view3d_draw_offscreen() */
2671 static void view3d_main_area_draw_objects(const bContext *C, ARegion *ar, const char **grid_unit)
2672 {
2673         Scene *scene= CTX_data_scene(C);
2674         View3D *v3d = CTX_wm_view3d(C);
2675         RegionView3D *rv3d= CTX_wm_region_view3d(C);
2676         Base *base;
2677         float backcol[3];
2678         unsigned int lay_used;
2679
2680         /* shadow buffers, before we setup matrices */
2681         if(draw_glsl_material(scene, NULL, v3d, v3d->drawtype))
2682                 gpu_update_lamps_shadows(scene, v3d);
2683         
2684         /* reset default OpenGL lights if needed (i.e. after preferences have been altered) */
2685         if (rv3d->rflag & RV3D_GPULIGHT_UPDATE) {
2686                 rv3d->rflag &= ~RV3D_GPULIGHT_UPDATE;
2687                 GPU_default_lights();
2688         }
2689
2690         /* clear background */
2691         if((v3d->flag2 & V3D_RENDER_OVERRIDE) && scene->world) {
2692                 if(scene->r.color_mgt_flag & R_COLOR_MANAGEMENT)
2693                         linearrgb_to_srgb_v3_v3(backcol, &scene->world->horr);
2694                 else
2695                         copy_v3_v3(backcol, &scene->world->horr);
2696                 glClearColor(backcol[0], backcol[1], backcol[2], 0.0);
2697         }
2698         else
2699                 UI_ThemeClearColor(TH_BACK);
2700
2701         glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
2702         
2703         /* setup view matrices */
2704         view3d_main_area_setup_view(scene, v3d, ar, NULL, NULL);
2705
2706         ED_region_draw_cb_draw(C, ar, REGION_DRAW_PRE_VIEW);
2707
2708         if(rv3d->rflag & RV3D_CLIPPING)
2709                 view3d_draw_clipping(rv3d);
2710         
2711         /* set zbuffer after we draw clipping region */
2712         if(v3d->drawtype > OB_WIRE) {
2713                 v3d->zbuf= TRUE;
2714                 glEnable(GL_DEPTH_TEST);
2715         }
2716         else
2717                 v3d->zbuf= FALSE;
2718
2719         /* enables anti-aliasing for 3D view drawing */
2720         /*if (!(U.gameflags & USER_DISABLE_AA))
2721                 glEnable(GL_MULTISAMPLE_ARB);*/
2722         
2723         // needs to be done always, gridview is adjusted in drawgrid() now
2724         rv3d->gridview= v3d->grid;
2725
2726         if((rv3d->view == RV3D_VIEW_USER) || (rv3d->persp != RV3D_ORTHO)) {
2727                 if ((v3d->flag2 & V3D_RENDER_OVERRIDE)==0) {
2728                         drawfloor(scene, v3d, grid_unit);
2729                 }
2730                 if(rv3d->persp==RV3D_CAMOB) {
2731                         if(scene->world) {
2732                                 if(scene->world->mode & WO_STARS) {
2733                                         RE_make_stars(NULL, scene, star_stuff_init_func, star_stuff_vertex_func,
2734                                                                   star_stuff_term_func);
2735                                 }
2736                         }
2737                         if ((v3d->flag2 & V3D_RENDER_OVERRIDE)==0) {
2738                                 if(v3d->flag & V3D_DISPBGPICS) draw_bgpic(scene, ar, v3d);
2739                         }
2740                 }
2741         }
2742         else {
2743                 if ((v3d->flag2 & V3D_RENDER_OVERRIDE)==0) {
2744                         ED_region_pixelspace(ar);
2745                         drawgrid(&scene->unit, ar, v3d, grid_unit);
2746                         /* XXX make function? replaces persp(1) */
2747                         glMatrixMode(GL_PROJECTION);
2748                         glLoadMatrixf(rv3d->winmat);
2749                         glMatrixMode(GL_MODELVIEW);
2750                         glLoadMatrixf(rv3d->viewmat);
2751
2752                         if(v3d->flag & V3D_DISPBGPICS) {
2753                                 draw_bgpic(scene, ar, v3d);
2754                         }
2755                 }
2756         }
2757         
2758         if(rv3d->rflag & RV3D_CLIPPING)
2759                 view3d_set_clipping(rv3d);
2760
2761         /* draw set first */
2762         if(scene->set) {
2763                 Scene *sce_iter;
2764                 for(SETLOOPER(scene->set, sce_iter, base)) {
2765                         
2766                         if(v3d->lay & base->lay) {
2767                                 
2768                                 UI_ThemeColorBlend(TH_WIRE, TH_BACK, 0.6f);
2769                                 draw_object(scene, ar, v3d, base, DRAW_CONSTCOLOR|DRAW_SCENESET);
2770                                 
2771                                 if(base->object->transflag & OB_DUPLI) {
2772                                         draw_dupli_objects_color(scene, ar, v3d, base, TH_WIRE);
2773                                 }
2774                         }
2775                 }
2776                 
2777                 /* Transp and X-ray afterdraw stuff for sets is done later */
2778         }
2779
2780         lay_used= 0;
2781
2782         /* then draw not selected and the duplis, but skip editmode object */
2783         for(base= scene->base.first; base; base= base->next) {
2784                 lay_used |= base->lay & ((1<<20)-1);
2785
2786                 if(v3d->lay & base->lay) {
2787                         
2788                         /* dupli drawing */
2789                         if(base->object->transflag & OB_DUPLI) {
2790                                 draw_dupli_objects(scene, ar, v3d, base);
2791                         }
2792                         if((base->flag & SELECT)==0) {
2793                                 if(base->object!=scene->obedit) 
2794                                         draw_object(scene, ar, v3d, base, 0);
2795                         }
2796                 }
2797         }
2798
2799         if(v3d->lay_used != lay_used) { /* happens when loading old files or loading with UI load */
2800                 /* find header and force tag redraw */
2801                 ScrArea *sa= CTX_wm_area(C);
2802                 ARegion *ar_header= BKE_area_find_region_type(sa, RGN_TYPE_HEADER);
2803                 ED_region_tag_redraw(ar_header); /* can be NULL */
2804                 v3d->lay_used= lay_used;
2805         }
2806
2807         /* draw selected and editmode */
2808         for(base= scene->base.first; base; base= base->next) {
2809                 if(v3d->lay & base->lay) {
2810                         if (base->object==scene->obedit || ( base->flag & SELECT) ) 
2811                                 draw_object(scene, ar, v3d, base, 0);
2812                 }
2813         }
2814
2815 //      REEB_draw();
2816
2817         if ((v3d->flag2 & V3D_RENDER_OVERRIDE)==0) {
2818                 /* must be before xray draw which clears the depth buffer */
2819                 if(v3d->zbuf) glDisable(GL_DEPTH_TEST);
2820                 draw_gpencil_view3d(scene, v3d, ar, 1);
2821                 if(v3d->zbuf) glEnable(GL_DEPTH_TEST);
2822         }
2823
2824         /* Transp and X-ray afterdraw stuff */
2825         if(v3d->afterdraw_transp.first)         view3d_draw_transp(scene, ar, v3d);
2826         if(v3d->afterdraw_xray.first)           view3d_draw_xray(scene, ar, v3d, 1);    // clears zbuffer if it is used!
2827         if(v3d->afterdraw_xraytransp.first)     view3d_draw_xraytransp(scene, ar, v3d, 1);
2828         
2829         ED_region_draw_cb_draw(C, ar, REGION_DRAW_POST_VIEW);
2830
2831         if(rv3d->rflag & RV3D_CLIPPING)
2832                 view3d_clr_clipping();
2833         
2834         BIF_draw_manipulator(C);
2835         
2836         /* Disable back anti-aliasing */
2837         /*if (!(U.gameflags & USER_DISABLE_AA))
2838                 glDisable(GL_MULTISAMPLE_ARB);*/
2839
2840         if(v3d->zbuf) {
2841                 v3d->zbuf= FALSE;
2842                 glDisable(GL_DEPTH_TEST);
2843         }
2844
2845         if ((v3d->flag2 & V3D_RENDER_OVERRIDE)==0) {
2846                 BDR_drawSketch(C);
2847         }
2848
2849         if ((U.ndof_flag & NDOF_SHOW_GUIDE) && (rv3d->viewlock != RV3D_LOCKED) && (rv3d->persp != RV3D_CAMOB))
2850                 // TODO: draw something else (but not this) during fly mode
2851                 draw_rotation_guide(rv3d);
2852
2853 }
2854
2855 static void view3d_main_area_draw_info(const bContext *C, ARegion *ar, const char *grid_unit)
2856 {
2857         Scene *scene= CTX_data_scene(C);
2858         View3D *v3d = CTX_wm_view3d(C);
2859         RegionView3D *rv3d= CTX_wm_region_view3d(C);
2860         bScreen *screen= CTX_wm_screen(C);
2861
2862         Object *ob;
2863
2864         if(rv3d->persp==RV3D_CAMOB)
2865                 drawviewborder(scene, ar, v3d);
2866
2867         if ((v3d->flag2 & V3D_RENDER_OVERRIDE)==0) {
2868                 /* draw grease-pencil stuff - needed to get paint-buffer shown too (since it's 2D) */
2869         //      if (v3d->flag2 & V3D_DISPGP)
2870                         draw_gpencil_view3d(scene, v3d, ar, 0);
2871
2872                 drawcursor(scene, ar, v3d);
2873         }
2874         
2875         if(U.uiflag & USER_SHOW_ROTVIEWICON)
2876                 draw_view_axis(rv3d);
2877         else    
2878                 draw_view_icon(rv3d);
2879         
2880         ob= OBACT;
2881         if(U.uiflag & USER_DRAWVIEWINFO) 
2882                 draw_selected_name(scene, ob);
2883
2884         if(rv3d->render_engine) {
2885                 view3d_main_area_draw_engine_info(rv3d, ar);
2886                 return;
2887         }
2888
2889         if((U.uiflag & USER_SHOW_FPS) && screen->animtimer) {
2890                 draw_viewport_fps(scene, ar);
2891         }
2892         else if(U.uiflag & USER_SHOW_VIEWPORTNAME) {
2893                 draw_viewport_name(ar, v3d);
2894         }
2895         if (grid_unit) { /* draw below the viewport name */
2896                 char tstr[32]= "";
2897
2898                 UI_ThemeColor(TH_TEXT_HI);
2899                 if(v3d->grid != 1.0f) {
2900                         BLI_snprintf(tstr, sizeof(tstr), "%s x %.4g", grid_unit, v3d->grid);
2901                 }
2902
2903                 BLF_draw_default_ascii(22,  ar->winy-(USER_SHOW_VIEWPORTNAME?40:20), 0.0f, tstr[0]?tstr : grid_unit, sizeof(tstr)); /* XXX, use real length */
2904         }
2905 }
2906
2907 void view3d_main_area_draw(const bContext *C, ARegion *ar)
2908 {
2909         View3D *v3d = CTX_wm_view3d(C);
2910         const char *grid_unit= NULL;
2911
2912         /* draw viewport using external renderer? */
2913         if(!(v3d->drawtype == OB_RENDER && view3d_main_area_draw_engine(C, ar))) {
2914                 /* draw viewport using opengl */
2915                 view3d_main_area_draw_objects(C, ar, &grid_unit);
2916                 ED_region_pixelspace(ar);
2917         }
2918         
2919         view3d_main_area_draw_info(C, ar, grid_unit);
2920
2921         v3d->flag |= V3D_INVALID_BACKBUF;
2922 }
2923