stencil - GEM-dev

3 Mar 2006


      hello,
does anyone have succefully used stencil buffer with GEM?
here is what i'm trying to do, without succes...
thanks
cyrille
#N canvas 0 0 911 552 10;
#X obj 54 112 gemhead 44;
#X obj 54 403 translateXYZ 0 0 -1;
#X obj 54 90 tgl 15 0 empty empty empty 0 -6 0 8 -262144 -1 -1 0 1
;
#X obj 54 374 GEMglStencilOp;
#X obj 54 295 GEMglStencilFunc;
#X floatatom 194 367 5 0 0 0 - - -;
#X obj 147 340 GLdefine GL_KEEP;
#X obj 148 319 bng 15 250 50 0 empty empty empty 0 -6 0 8 -262144 -1
-1;
#X floatatom 196 236 5 0 0 0 - - -;
#X obj 188 191 bng 15 250 50 0 empty empty empty 0 -6 0 8 -262144 -1
-1;
#X obj 188 212 GLdefine GL_NEVER;
#X msg 161 269 1;
#X obj 54 230 GEMglEnable;
#X floatatom 137 184 5 0 0 0 - - -;
#X obj 126 140 bng 15 250 50 0 empty empty empty 0 -6 0 8 -262144 -1
-1;
#X obj 126 163 GLdefine GL_STENCIL_TEST;
#X obj 316 189 bng 15 250 50 0 empty empty empty 0 -6 0 8 -262144 -1
-1;
#X obj 316 212 GLdefine GL_ALWAYS;
#X obj 585 153 gemhead 31;
#X obj 585 129 tgl 15 0 empty empty empty 0 -6 0 8 -262144 -1 -1 0
1;
#X obj 585 220 GEMglClear;
#X obj 650 198 GLdefine GL_STENCIL_BUFFER_BIT;
#X obj 650 177 bng 15 250 50 0 empty empty empty 0 -6 0 8 -262144 -1
-1;
#X floatatom 659 220 5 0 0 0 - - -;
#X obj 585 269 GEMglStencilMask;
#X msg 692 246 1;
#X obj 585 369 GEMglStencilFunc;
#X msg 692 344 1;
#X floatatom 634 335 5 0 0 0 - - -;
#X obj 620 289 bng 15 250 50 0 empty empty empty 0 -6 0 8 -262144 -1
-1;
#X obj 620 312 GLdefine GL_ALWAYS;
#X obj 713 62 loadbang;
#X obj 188 132 loadbang;
#X msg 585 107 0;
#X text 621 127 to draw in the stencil buffer;
#X obj 54 454 square 3;
#X obj 54 428 color 1 0 0;
#X text 219 282 enable the stencil buffer;
#X text 220 303 the red square should not be seen. (?);
#X obj 396 90 gemwin;
#X msg 396 42 create , 1;
#X msg 404 67 0 , destroy;
#X obj 585 397 square 1;
#X connect 0 0 12 0;
#X connect 1 0 36 0;
#X connect 2 0 0 0;
#X connect 3 0 1 0;
#X connect 4 0 3 0;
#X connect 6 0 5 0;
#X connect 6 0 3 1;
#X connect 6 0 3 2;
#X connect 6 0 3 3;
#X connect 7 0 6 0;
#X connect 9 0 10 0;
#X connect 10 0 8 0;
#X connect 10 0 4 1;
#X connect 11 0 4 3;
#X connect 11 0 4 2;
#X connect 12 0 4 0;
#X connect 14 0 15 0;
#X connect 15 0 13 0;
#X connect 15 0 12 1;
#X connect 16 0 17 0;
#X connect 17 0 4 1;
#X connect 18 0 20 0;
#X connect 19 0 18 0;
#X connect 20 0 24 0;
#X connect 21 0 20 1;
#X connect 21 0 23 0;
#X connect 22 0 21 0;
#X connect 24 0 26 0;
#X connect 25 0 24 1;
#X connect 26 0 42 0;
#X connect 27 0 26 3;
#X connect 27 0 26 2;
#X connect 29 0 30 0;
#X connect 30 0 28 0;
#X connect 30 0 26 1;
#X connect 31 0 21 0;
#X connect 31 0 25 0;
#X connect 31 0 30 0;
#X connect 31 0 27 0;
#X connect 31 0 33 0;
#X connect 32 0 10 0;
#X connect 32 0 15 0;
#X connect 32 0 6 0;
#X connect 32 0 11 0;
#X connect 33 0 19 0;
#X connect 36 0 35 0;
#X connect 40 0 39 0;
#X connect 41 0 39 0;