GEM-dev October 2007

gem-dev@lists.iem.at

12 participants
17 discussions

[deph] limitation
by cyrille henry 07 Oct '07

07 Oct '07

hello, the depth object can only disable the depth buffer. it's fine when there is only one deph object in a gaimchain. but i'd like to enable/disable depth on diferents part of the gemchain. so i changed the line 60 of depth.cpp and add : else glEnable(GL_DEPTH_TEST); i think this change is worth inclusion in gem cvs. cyrille

2 1

Re: [GEM-dev] Gem/src/Pixes pix_record.h,1.9,1.10
by IOhannes m zmoelnig 05 Oct '07

05 Oct '07

christopher clepper wrote: > ! static void codecMessCallback(void *data, t_symbol *s, int argc, t_atom *argv); > ! static void minMessCallback(void *data, t_floatarg min); > ! static void maxMessCallback(void *data, t_floatarg max); > ! > > static void minMessCallback(void *data, t_floatarg min); oops, seems like you haven't checked whether it still compiles after merging with my last commits (which basically were the same as the ones you committed; which resulted in double definitions within pix_record.h) i have now removed the dupe definitions and checked it in. i am still wondering what these new messages will do...no record backend uses it and i had to add the new variables to record.h (this is already in CVS). i guess you have some record*.cpp which do make use of the new stuff, so it would be interesting if you could commit those too :-) fgmads.r IOhannes

2 2

glsl sample3d textures
by marius schebella 02 Oct '07

02 Oct '07

hi again, how can I create and/or load 3d textures (like 3d perlin noise) to a glsl program, so that I can use them for sampler3d textures? marius.

4 8

maximum dimensions for [pix_image]
by Roman Haefeli 02 Oct '07

02 Oct '07

hi all what are the maximum dimensions for [pix_image]? is it hardware specific? is it library specific? is it neither? i have a png file with 3375 x 240 px and it cannot be loaded with [pix_image]. when i do so, i get: GL: invalid value when turning rendering on and the geo, where it is textured on, stays white. roman ___________________________________________________________ Der frühe Vogel fängt den Wurm. Hier gelangen Sie zum neuen Yahoo! Mail: http://mail.yahoo.de

1 0

texture coords for glsl
by marius schebella 02 Oct '07

02 Oct '07

hi, sorry to be bothering, I asked that question some days ago on the pd list, maybe the gem-dev is the better place to ask. I am referring to a mail from the summer between cyrille and chris, but can't find it anymore. I am trying to get more multitexture glsl stuff working. the problem I am having right now is that I don't know how to pass the rectangle coords of the second texture to the glsl program. in the example I got, it looks like only the coords of one texture are used... vec4 color = texture2DRect(MyTex, texcoord1); vec4 color2 = texture2DRect(MyTex1, texcoord1); but in another shader I got texcoord0 = vec2(gl_TextureMatrix[0] * gl_MultiTexCoord0); texcoord1 = vec2(gl_TextureMatrix[1] * gl_MultiTexCoord1); and that does not work. I wondered how glsl knows the size of the first texture and I tried to have both textures in one render chain, but that did not work. in the mail I mentioned above read that I can send a message to the glsl program to tell it the coords. how do I do that? or should this work, and I am only using an old GEM version (0.91-cvs from july29) thanks, marius.

2 4

desperate - Intel GM965 in Windows XP: OpenGL issue??
by matteo sisti sette 01 Oct '07

01 Oct '07

Hi, I am desperate: on a new laptop with a Mobile Intel GM965 Express integrated chipset, when trying to reproduce a video in GEM (with a pix_movie connected to a rectangle), it eats up 100% of one CPU and runs at less than 10 fps. It seems like it is not using the GPU so the CPU is working. The very same patch (and much more) with the very same version of GEM runs smoothly on 7 or more other computers (all Windows XP), some of them with similar (but not identical) Mobile Intel graphics chipsets (e.g. 965GM), some with other vendors' gpu's (e.g. NVIDIA GeForce) I installed the most recent drivers from Intel, nothing changed. Any idea? Thanks m. P.S. sorry for posting the same issue again: I just thought the previous post was too long and boring so I tried by summing it up a bit. -- Matteo Sisti Sette matteosistisette(a)gmail.com http://www.matteosistisette.com

2 1

glsl-program output
by marius schebella 01 Oct '07

01 Oct '07

hey, I would like to see the print output of glsl_program inside the patch for automatic creation of the used uniform variables. is there a way to get that information from an outlet? marius.

2 1

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GEM-dev October 2007