Hello Markus, Markus Joppich wrote: > I'm posting here as I've no where found an answer to my problem. In case > I overlooked a related topic, I am sorry for asking again. > > I am using OpenSG 1.8 in my little starter project. > > I want to use particles in mode "Rectangles" (so that I have no > billboarding effect). Furthermore those particles should display a texture.
I'm afraid the rectangle mode does not support textures, at least that is what the code looks like to me. > That's working in case I am using a texture with only one color. If not, > something strange happens. See this picture to see what's happening. > > http://img688.imageshack.us/img688/2973/effect.png that is probably an artefact of the rectangle mode not setting any texture coordinates, so you effectively get whatever the hardware feels like doing. With a texture that has only one colour the lookup coordinates don't really matter and so it seems to work. > I'll include parts of my code where the texture gets set right below. I > think that'd be the crucial part. [SNIP - code] looks ok to me. > Funnily enough it works correctly in case i am using mode "ViewDirQuads" > - but that got billboarding which I don't want to use. I somehow have > the feeling as if the texture doesn't get mapped correctly on the > "Rectangle". But I'm not sure on that. yes, that is what happens. > So if anyone got any idea what's happening here, feel free to help :-) > Or if there's another solution for displaying particles with texture > without billboarding, I am open for everything :-) take a look at testParticlesRenderShader.cpp, it uses a shader to calculate the particle positions and supports textures, so you can use that to have the particles not follow the viewer and still use textures. Cheers, Carsten ------------------------------------------------------------------------------ _______________________________________________ Opensg-users mailing list Opensg-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/opensg-users
