[jitter] Alpha channel in gl.sketch

Jasch, thanks a lot for this very clear example. Now it's working good.

The right messages to send to jit.gl.sketch are blend_enable 1 and 
depth_enable 0, not glenable blend. Thanks for that.

cheers

f.e

f.e chanfrault | aka | personal computer music
 >>>>>>> http://www.personal-computer-music.com
 >>>>>>> | film soundtracks, sound art, music |


jasch   a écrit :
> the glcolor's alpha-value has to be set to something else than 1., too.
> 
> see patch below
> 
> hth
> 
> /*j
> 
>> I'm sending "reset, glclearcolor 1. 1. 1. 1., glclear, glenable blend, 
>> moveto 0. 0., glcolor 0.5 0.7 0.8 1., circle 0.1" to jit.gl.sketch but 
>> still no alpha channel...
> 
> #P window setfont "Sans Serif" 9.;
> #P user jit.fpsgui 105 198 60 196617 0;
> #P window linecount 1;
> #P newex 650 400 69 196617 route symbol;
> #N coll start_list 1;
> #T flags 1 0;
> #T 0 reset;
> #T 1 moveto 0. 0. 0.;
> #T 2 glcolor 0. 0. 1. 0.5;
> #T 3 shapeslice 40 40;
> #T 4 circle 0.1;
> #T 5 moveto 0. 0. 0.;
> #T 6 glcolor 1. 0.5 0 0.5;
> #T 7 shapeslice 40 40;
> #T 8 circle 0.1;
> #T 9 moveto 0. 0. 0.;
> #T 10 glcolor 0. 0. 0. 0.25;
> #T 11 plane 0.01 1.;
> #P newobj 650 379 82 196617 coll start_list 1;
> #P newex 588 437 310 196617 jit.gl.sketch test @blend_enable 1 
> @depth_enable 0 @displaylist 1;
> #P comment 585 219 68 196617 plane 1 alpha;
> #P comment 420 219 71 196617 circle 2 alpha;
> #P comment 258 219 71 196617 circle 1 alpha;
> #P flonum 585 238 35 9 0 0 0 3 0 0 0 221 221 221 222 222 222 0 0 0;
> #P objectname plane[0].alpha;
> #P message 585 256 161 196617 cmd_replace 9 glcolor 0. 0. 0. \$1;
> #P flonum 420 238 35 9 0 0 0 3 0 0 0 221 221 221 222 222 222 0 0 0;
> #P objectname circle[1].alpha;
> #P message 420 256 164 196617 cmd_replace 5 glcolor 1. 0.5 0 \$1;
> #P flonum 258 238 35 9 0 0 0 3 0 0 0 221 221 221 222 222 222 0 0 0;
> #P objectname circle[0].alpha;
> #P message 258 256 161 196617 cmd_replace 1 glcolor 0. 0. 1. \$1;
> #P newex 258 281 51 196617 s cmdlist;
> #P comment 1016 37 85 196617 jasch 20080526;
> #P comment 965 96 63 196617 plane 1 size;
> #P flonum 965 113 35 9 0 0 0 3 0 0 0 221 221 221 222 222 222 0 0 0;
> #P objectname plane[1];
> #P flonum 1002 113 35 9 0 0 0 3 0 0 0 221 221 221 222 222 222 0 0 0;
> #P objectname plane[2];
> #P newex 965 135 49 196617 pak 0. 0.;
> #P message 965 160 138 196617 cmd_replace 10 plane \$1 \$2;
> #P comment 843 96 66 196617 circle 2 size;
> #P flonum 844 113 35 9 0 0 0 3 0 0 0 221 221 221 222 222 222 0 0 0;
> #P objectname circle[1];
> #P message 844 160 120 196617 cmd_replace 7 circle \$1;
> #P comment 722 96 66 196617 circle 1 size;
> #P flonum 723 113 35 9 0 0 0 3 0 0 0 221 221 221 222 222 222 0 0 0;
> #P objectname circle[0].size;
> #P message 723 160 120 196617 cmd_replace 3 circle \$1;
> #P newex 1052 113 53 196617 autopattr;
> #X prestore circle[0].alpha 1 0 0.49;
> #X prestore circle[0].size 1 0 0.5;
> #X prestore circle[0].x 1 0 0.49;
> #X prestore circle[0].y 1 0 0.;
> #X prestore circle[1] 1 0 0.75;
> #X prestore circle[1].alpha 1 0 0.3;
> #X prestore circle[1].x 1 0 -0.16;
> #X prestore circle[1].y 1 0 0.;
> #X prestore plane[0].alpha 1 0 0.18;
> #X prestore plane[0].x 1 0 0.29;
> #X prestore plane[0].y 1 0 -0.98;
> #X prestore plane[1] 1 0 0.3;
> #X prestore plane[2] 1 0 1.;
> #X prestore render.toggle 1 0 1;
> #X prestore window.fsaa 1 0 1;
> #P objectname u532000098;
> #P toggle 48 298 15 0;
> #P objectname window.fsaa;
> #P message 48 315 44 196617 fsaa \$1;
> #P newex 588 358 51 196617 r cmdlist;
> #P newex 420 465 75 196617 grab 2 cmdlist;
> #P newex 650 358 77 196617 loadmess dump;
> #P comment 568 96 45 196617 plane 1;
> #P comment 412 96 45 196617 circle 2;
> #P button 404 357 15 0;
> #P message 404 412 30 196617 open;
> #P newex 404 380 55 196617 b 4;
> #P flonum 258 113 35 9 0 0 0 3 0 0 0 221 221 221 222 222 222 0 0 0;
> #P objectname circle[0].x;
> #P flonum 295 113 35 9 0 0 0 3 0 0 0 221 221 221 222 222 222 0 0 0;
> #P objectname circle[0].y;
> #P newex 258 135 49 196617 pak 0. 0.;
> #P message 258 160 154 196617 cmd_replace 0 moveto \$1 \$2 0.;
> #P flonum 568 113 35 9 0 0 0 3 0 0 0 221 221 221 222 222 222 0 0 0;
> #P objectname plane[0].x;
> #P flonum 605 113 35 9 0 0 0 3 0 0 0 221 221 221 222 222 222 0 0 0;
> #P objectname plane[0].y;
> #P newex 568 135 49 196617 pak 0. 0.;
> #P message 568 160 154 196617 cmd_replace 8 moveto \$1 \$2 0.;
> #P flonum 413 113 35 9 0 0 0 3 0 0 0 221 221 221 222 222 222 0 0 0;
> #P objectname circle[1].x;
> #P flonum 450 113 35 9 0 0 0 3 0 0 0 221 221 221 222 222 222 0 0 0;
> #P objectname circle[1].y;
> #P newex 413 135 49 196617 pak 0. 0.;
> #P message 413 160 154 196617 cmd_replace 4 moveto \$1 \$2 0.;
> #P message 434 412 71 196617 wclose \, clear;
> #P message 420 440 57 196617 getcmdlist;
> #N coll cmd_list 1;
> #P newobj 404 515 77 196617 coll cmd_list 1;
> #N vpatcher 698 108 1298 508;
> #P window setfont "Sans Serif" 9.;
> #P newex 50 77 60 196617 route clear;
> #P newex 155 123 20 196617 t b;
> #P newex 123 190 60 196617 prepend set;
> #P newex 123 123 20 196617 t b;
> #P newex 100 231 52 196617 prepend 0;
> #N counter;
> #X flags 0 0;
> #P newobj 123 156 77 196617 counter;
> #P inlet 155 30 15 0;
> #P inlet 50 30 15 0;
> #P outlet 100 285 15 0;
> #P connect 1 0 8 0;
> #P connect 8 1 4 0;
> #P connect 6 0 4 0;
> #P connect 4 0 0 0;
> #P connect 8 1 5 0;
> #P connect 5 0 3 0;
> #P connect 3 0 6 0;
> #P connect 2 0 7 0;
> #P connect 8 0 7 0;
> #P connect 7 0 3 2;
> #P pop;
> #P newobj 420 491 39 196617 p idx;
> #P newex 258 190 51 196617 s cmdlist;
> #P toggle 44 118 15 0;
> #P objectname render.toggle;
> #P newex 44 170 50 196617 t b erase;
> #P newex 44 146 90 196617 qmetro 16.66666;
> #P window linecount 2;
> #P newex 44 233 163 196617 jit.gl.render test @depth_enable 1 
> @erase_color 1. 1. 1. 1.;
> #P window linecount 1;
> #P comment 257 96 45 196617 circle 1;
> #P comment 426 359 87 196617 see command list;
> #P user jit.pwindow 47 346 279 213 1 1 1 0 1 0;
> #X name test;
> #P user panel 43 343 287 219;
> #X brgb 191 191 191;
> #X frgb 0 0 0;
> #X border 1;
> #X rounded 0;
> #X shadow 0;
> #X done;
> #P window setfont "Sans Serif" 18.;
> #P comment 23 30 635 196626 blending in OpenGL with jit.gl.sketch \, 
> glcommands and the command list;
> #P connect 8 0 6 0;
> #P connect 6 0 7 0;
> #P connect 7 0 5 0;
> #P fasten 7 1 5 0 89 197 49 197;
> #P connect 35 0 34 0;
> #P connect 34 0 2 0;
> #P connect 7 0 62 0;
> #P connect 25 0 23 0;
> #P connect 23 0 22 0;
> #P fasten 43 0 9 0 970 182 263 182;
> #P fasten 40 0 9 0 849 182 263 182;
> #P fasten 37 0 9 0 728 182 263 182;
> #P fasten 22 0 9 0 263 182 263 182;
> #P fasten 18 0 9 0 573 182 263 182;
> #P fasten 14 0 9 0 418 182 263 182;
> #P connect 51 0 50 0;
> #P fasten 54 0 49 0 590 276 263 276;
> #P fasten 52 0 49 0 425 276 263 276;
> #P connect 50 0 49 0;
> #P connect 24 0 23 1;
> #P connect 28 0 26 0;
> #P connect 26 0 27 0;
> #P connect 10 0 11 0;
> #P connect 27 0 11 0;
> #P fasten 13 0 11 0 439 432 409 432;
> #P connect 17 0 15 0;
> #P connect 15 0 14 0;
> #P connect 53 0 52 0;
> #P connect 26 1 12 0;
> #P connect 12 0 32 0;
> #P connect 32 1 10 0;
> #P connect 26 2 13 0;
> #P connect 26 3 10 1;
> #P connect 16 0 15 1;
> #P connect 21 0 19 0;
> #P connect 19 0 18 0;
> #P connect 55 0 54 0;
> #P connect 33 0 59 0;
> #P connect 61 0 59 0;
> #P connect 61 1 59 0;
> #P connect 20 0 19 1;
> #P connect 31 0 60 0;
> #P connect 60 0 61 0;
> #P connect 38 0 37 0;
> #P connect 41 0 40 0;
> #P connect 46 0 44 0;
> #P connect 44 0 43 0;
> #P connect 45 0 44 1;
> #P window clipboard copycount 63;
> 
>