Yo, I've got it, the background image had to be rendering between a snap and the snapped image, so using a trigger resolved this.
Inside the patch there is also something I don't understand it's explained inside, just putting: [gemhead] | [colorRGB 0 0 1] turns background to blue Also I'm very interested by the shader method because it's cpu wise but I don't know enough the glsl functions for getting the same fading effect we have by using [biquad] ----- "patko" <[email protected]> a écrit : > but I still can't see the background image, > > once I could see it but I couldn't get how I did it. > +++++ > > Patrice Colet - 06 32 66 03 57 > > ----- "Jack" <[email protected]> a écrit : > > > OK, good ! ;) > > ++ > > > > Jack > > > > > > > > Le lundi 07 juin 2010 à 21:10 +0200, patko a écrit : > > > the rendering order wasn't good in my patch, now you can see the > > fading > > > > > > Patrice Colet - 06 32 66 03 57 > > > > > > ----- "patko" <[email protected]> a écrit : > > > > > > > yes, that's what I'm trying to achieve, it just misses the > pretty > > > > fading we can obtain > > > > with biquad processing, but that is exactly that, > > > > > > > > thanks > > > > ++++ > > > > Patrice Colet - 06 32 66 03 57 > > > > > > > > ----- "Jack" <[email protected]> a écrit : > > > > > > > > > Here a patch using GLSL and the frame buffer for feedback. > > > > > Hope it helps. > > > > > ++ > > > > > > > > > > Jack > > > > > > > > > > > > > > > > > > > > Le lundi 07 juin 2010 à 17:00 +0200, patko a écrit : > > > > > > oupse I've mixed [pix_threshold] and [pix_alpha] > > > > > > > > > > > > it's about pix_alpha rather but I think you've understood, > > > > > > > > > > > > indeed I'd like the particle reveals background image > > > > > > > > > > > > the idea is about snaping the particle system over a black > > > > rectangle > > > > > (the mask) > > > > > > > > > > > > and then turning the white pixels to alpha for revelating > the > > > > > (purple) rectangle > > > > > > that should be rendered first > > > > > > > > > > > > i've attached again the same patch but with [gemhead 5] > > instead of > > > > > [gemhead 0] > > > > > > > > > > > > +++ > > > > > > > > > > > > > > > > > > > > > > > > ----- "Jack" <[email protected]> a écrit : > > > > > > > > > > > > > order rendering' because [gemwin 0] <=> [gemwin 50]. > > > > > > > If I understand, you want to see a background image when > > the > > > > > > > particles > > > > > > > are drawn ? > > > > > > > ++ > > > > > > > > > > > > > > Jack > > > > > > > > > > > > > > > > > > > > _______________________________________________ > > > > [email protected] mailing list > > > > UNSUBSCRIBE and account-management -> > > > > http://lists.puredata.info/listinfo/pd-list
#N canvas 785 46 450 415 10; #N canvas 340 107 682 322 gemwin 0; #X obj 102 122 tgl 15 0 \$0-gemstart \$0-gemstart empty 17 7 0 10 -262144 -1 -1 0 1; #X obj 102 161 r \$0-gemstart; #X obj 102 182 select 1 0; #X msg 184 245 destroy; #X obj 102 239 t a; #X obj 318 54 inlet; #X obj 318 255 gemwin; #X obj 318 100 t a a; #X obj 318 287 outlet; #X obj 350 128 route create destroy; #X obj 350 150 t b; #X msg 350 172 1; #X obj 390 150 t b; #X msg 390 172 0; #X obj 350 195 t f; #X msg 350 219 set \$1; #X text 118 122 rendering; #X msg 102 214 reset \, dimen 1024 768 \, create \, 1; #X connect 1 0 2 0; #X connect 2 0 17 0; #X connect 2 1 3 0; #X connect 3 0 4 0; #X connect 4 0 7 0; #X connect 5 0 7 0; #X connect 6 0 8 0; #X connect 7 0 6 0; #X connect 7 1 9 0; #X connect 9 0 10 0; #X connect 9 1 12 0; #X connect 10 0 11 0; #X connect 11 0 14 0; #X connect 12 0 13 0; #X connect 13 0 14 0; #X connect 14 0 15 0; #X connect 15 0 0 0; #X connect 17 0 4 0; #X coords 0 -1 1 1 85 40 1 100 100; #X restore 25 30 pd gemwin; #N canvas 0 0 719 495 particle 0; #X text 345 313 set the number per frame; #X text 343 341 set the age to kill at; #X text 349 225 the velocity domain; #X text 348 240 a sphere at 0 \, 0.2 \, 0; #X text 349 259 radius = 0.3; #X obj 219 381 part_render; #X obj 220 256 part_size 1; #X msg 310 233 2; #X msg 280 232 1; #X obj 219 313 part_source 10; #X obj 218 227 part_head; #X obj 219 281 part_velocity sphere 0 0 0 0.05; #X obj 219 411 sphere 0.015; #X obj 214 154 translateXYZ 0 0 0; #X floatatom 295 34 5 0 0 0 - - -; #X floatatom 352 36 5 0 0 0 - - -; #X obj 449 27 gemmouse; #X floatatom 451 53 5 0 0 0 - - -; #X floatatom 492 53 5 0 0 0 - - -; #X obj 428 79 / 1024; #X obj 487 80 / 768; #X obj 423 103 * 10.66; #X obj 420 125 - 5.33; #X obj 487 104 * -8; #X obj 491 132 + 4; #X obj 211 121 inlet; #X floatatom 339 111 5 0 0 0 - - -; #X obj 219 343 part_killold 30; #X connect 5 0 12 0; #X connect 6 0 11 0; #X connect 7 0 6 1; #X connect 8 0 6 1; #X connect 9 0 27 0; #X connect 10 0 6 0; #X connect 11 0 9 0; #X connect 13 0 10 0; #X connect 14 0 13 1; #X connect 15 0 13 2; #X connect 16 0 17 0; #X connect 16 1 18 0; #X connect 17 0 19 0; #X connect 18 0 20 0; #X connect 19 0 21 0; #X connect 20 0 23 0; #X connect 21 0 22 0; #X connect 22 0 14 0; #X connect 23 0 24 0; #X connect 24 0 15 0; #X connect 25 0 13 0; #X connect 26 0 13 3; #X connect 27 0 5 0; #X restore 148 72 pd particle system; #N canvas 475 175 541 421 biquad 0; #X obj 111 356 pix_texture; #X text 161 143 draw the snapped texture; #X floatatom 246 194 3 0 1 2 fb0 - -; #X floatatom 270 194 3 0 1 2 fb1 - -; #X floatatom 294 194 3 0 1 2 fb2 - -; #X floatatom 323 194 3 0 1 2 ff1 - -; #X floatatom 347 194 3 0 1 2 ff2 - -; #N canvas 0 0 450 300 init 0; #X obj 104 258 outlet; #X obj 154 258 outlet; #X obj 204 258 outlet; #X obj 254 258 outlet; #X obj 304 258 outlet; #X obj 244 59 inlet; #X obj 388 158 t b; #X msg 378 201 1; #X msg 413 201 0; #X obj 246 88 route 1; #X obj 353 258 outlet; #X obj 238 127 t b; #X obj 193 105 t b b; #X obj 277 115 t b b; #X msg 277 135 1; #X msg 140 213 0.4; #X msg 104 214 0.7; #X msg 175 214 0.6; #X msg 277 215 0.6; #X msg 312 213 0.6; #X msg 247 215 0.5; #X connect 5 0 9 0; #X connect 6 0 7 0; #X connect 6 0 8 0; #X connect 7 0 3 0; #X connect 8 0 1 0; #X connect 8 0 2 0; #X connect 8 0 4 0; #X connect 8 0 10 0; #X connect 9 0 12 0; #X connect 9 1 13 0; #X connect 11 0 17 0; #X connect 11 0 20 0; #X connect 11 0 18 0; #X connect 11 0 19 0; #X connect 11 0 15 0; #X connect 12 0 16 0; #X connect 12 1 11 0; #X connect 13 0 14 0; #X connect 13 1 6 0; #X connect 14 0 0 0; #X connect 15 0 1 0; #X connect 16 0 0 0; #X connect 17 0 2 0; #X connect 18 0 4 0; #X connect 19 0 10 0; #X connect 20 0 3 0; #X restore 356 121 pd init; #X obj 110 234 pix_biquad; #X floatatom 371 194 3 0 1 2 ff3 - -; #X obj 246 212 pack 1 0 0 1 0 0; #X obj 111 202 pix_snap 0 0 1024 768; #X obj 296 248 cnv 15 160 120 empty empty empty 20 12 0 14 -24198 -66577 0; #X floatatom 185 246 5 0 1 1 pass - -; #X floatatom 241 246 5 0 1 1 other - -; #X obj 111 324 pix_alpha; #X obj 112 381 rectangle 5.33 4; #X obj 360 94 tgl 15 0 empty empty empty 17 7 0 10 -262144 -1 -1 1 1; #X msg 23 49 quality \$1; #X obj 23 30 tgl 15 0 empty empty empty 0 -6 0 8 -262144 -1 -1 0 1 ; #X obj 400 224 loadbang; #X obj 355 71 loadbang; #X msg 327 236 0; #X msg 329 258 1; #X obj 106 34 inlet; #X obj 108 143 t a b b; #X obj 126 169 outlet; #X text 166 125 snap \, draw a background and; #X obj 72 175 alpha; #X obj 106 89 translateXYZ 0 0 0; #X floatatom 208 48 5 0 0 0 - - -; #X msg 331 280 1 1 1; #X msg 330 300 0.7 0.7 0.7; #X connect 0 0 16 0; #X connect 2 0 10 0; #X connect 3 0 10 1; #X connect 4 0 10 2; #X connect 5 0 10 3; #X connect 6 0 10 4; #X connect 7 0 2 0; #X connect 7 1 3 0; #X connect 7 2 4 0; #X connect 7 3 5 0; #X connect 7 4 6 0; #X connect 7 5 9 0; #X connect 8 0 15 0; #X connect 9 0 10 5; #X connect 10 0 8 0; #X connect 11 0 8 0; #X connect 13 0 15 1; #X connect 14 0 15 2; #X connect 15 0 0 0; #X connect 17 0 7 0; #X connect 18 0 0 0; #X connect 19 0 18 0; #X connect 20 0 22 0; #X connect 20 0 23 0; #X connect 20 0 31 0; #X connect 20 0 32 0; #X connect 21 0 17 0; #X connect 22 0 15 1; #X connect 23 0 15 2; #X connect 24 0 29 0; #X connect 25 0 28 0; #X connect 25 1 26 0; #X connect 25 2 11 0; #X connect 28 0 11 0; #X connect 29 0 25 0; #X connect 30 0 29 3; #X connect 31 0 15 3; #X connect 32 0 15 4; #X restore 149 153 pd biquad; #N canvas 0 0 463 300 background 0; #X obj 154 42 tgl 15 0 empty empty empty 0 -6 0 8 -262144 -1 -1 0 1 ; #X obj 155 209 rectangle 5.34 4; #X obj 184 20 loadbang; #X msg 184 45 0; #X obj 28 18 inlet; #X obj 155 72 gemhead; #X obj 156 145 pix_image; #X msg 72 107 open \$1; #X obj 73 85 openpanel; #X obj 87 69 bng 15 250 50 0 empty empty empty 17 7 0 10 -262144 -1 -1; #X obj 157 174 pix_texture; #X obj 274 153 colorRGB 0 0 1; #X obj 156 102 spigot 1; #X obj 211 73 == 0; #X obj 305 77 == 1; #X obj 273 111 spigot; #X obj 299 44 tgl 15 0 empty empty empty 17 7 0 10 -262144 -1 -1 0 1; #X obj 82 21 inlet; #X text 244 20 why this turn background to blue?; #X connect 0 0 5 0; #X connect 2 0 3 0; #X connect 3 0 5 0; #X connect 4 0 5 0; #X connect 5 0 12 0; #X connect 5 0 15 0; #X connect 6 0 10 0; #X connect 7 0 6 0; #X connect 8 0 7 0; #X connect 9 0 8 0; #X connect 10 0 1 0; #X connect 12 0 6 0; #X connect 13 0 12 1; #X connect 14 0 15 1; #X connect 15 0 11 0; #X connect 16 0 13 0; #X connect 16 0 14 0; #X connect 17 0 8 0; #X restore 149 229 pd background image; #X obj 148 47 gemhead 40; #X obj 149 123 gemhead; #X obj 255 208 bng 15 250 50 0 empty empty empty 17 7 0 10 -262144 -1 -1; #X text 279 205 <--open image; #X text 272 228 <-- problem exposed inside; #X text 36 100 pix_alpha turns white pixels to alpha then reveal background image; #X connect 2 0 3 0; #X connect 4 0 1 0; #X connect 5 0 2 0; #X connect 6 0 3 1;
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