Hi, AFAIK you don't need texture coordinates with point sprites! Have a look at Source/System/State/testPointChunkRender.cpp Perhaps a lighting issue?
Thomas > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf > Of Matthias Stiller > Sent: Tuesday, March 13, 2007 9:36 AM > To: [email protected] > Subject: Re: [Opensg-users] Texturizing Point Sprites - How to? > > Hello, > > I see no mention of TextureCoordinates, do you supply them > with your geometry ? > > Regards > > Matthias > > On Monday 12 March 2007 15:40, Martin Pfeiffer wrote: > > Hello, > > perhaps anyone can help me with the texturizing of my > point sprites. > > - what is wrong? > > > > To have a single textured Point Sprite i tried this here: > > > > 1. i defined a TextureChunkPtr, loaded a texture, set it per > > ...->setPointSprite(bool b) true 2. i defined a > BlendChunkPtr, gave > > properties 3. i defined a PointChunkPtr, set it per > > ...->setSprite(bool b) true 4. i created a ChunkMaterialPtr, to > > bundle the properties 5. i defined a GeometryPtr with: > > GeoPTypesPtr(GL_POINT), GeoPLengthsPtr(1), > GeoPositions3fPtr(x,y,z) > > 6. i created a NodePtr, set the core with the given geometry > > > > In the result i have a black square with no texture. > > - why is that so? have i forgotten something? > > - is it at all possible to texturize point sprites? > > > > > > would be nice, if anybody helped - thanx - MartiN > > > > > > > > > > > > > > > > > > > > Here is the code: > > > > /*###########################################################*/ > > > > ImagePtr image = Image::create(); // material > > image->read("textures/dummy_tex.tga"); > > TextureChunkPtr texChunk = TextureChunk::create(); > > beginEditCP(texChunk); > > { > > texChunk->setEnvMode(GL_MODULATE); > > texChunk->setMinFilter(GL_LINEAR_MIPMAP_LINEAR); > > texChunk->setMagFilter(GL_LINEAR); > > texChunk->setScale(true); > > texChunk->setImage(image); > > texChunk->setPointSprite(true); > > } > > endEditCP(texChunk); > > > > BlendChunkPtr blendChunk = BlendChunk::create(); > > beginEditCP(blendChunk); > > { > > blendChunk->setAlphaValue(0.2f); > > blendChunk->setAlphaFunc (GL_GEQUAL); > > blendChunk->setSrcFactor (GL_SRC_ALPHA); > > blendChunk->setDestFactor(GL_ONE_MINUS_SRC_ALPHA); > > } > > endEditCP(blendChunk); > > > > PointChunkPtr pointChunk = PointChunk::create(); > > beginEditCP(pointChunk); > > pointChunk->setSprite(true); > > pointChunk->setSize(100); > > endEditCP(pointChunk); > > > > ChunkMaterialPtr material = ChunkMaterial::create(); > > beginEditCP(material); > > material->addChunk(pointChunk); > > material->addChunk(texChunk); > > material->addChunk(blendChunk); > > endEditCP(material); > > > > GeoPTypesPtr type = GeoPTypesUI8::create(); // geo > > GeoPLengthsPtr length = GeoPLengthsUI32::create(); > > GeoPositions3fPtr pos_sprite = GeoPositions3f::create(); > > > > beginEditCP(pos_sprite); > > pos_sprite->addValue(Pnt3f( 1000 , 1000 ,1000 )); > > endEditCP(pos_sprite); > > > > beginEditCP(type); > > type->addValue(GL_POINT); > > endEditCP(type); > > > > beginEditCP(length); > > length->addValue(pos_sprite->getSize()); > > endEditCP(length); > > > > GeometryPtr spriteGeo = Geometry::create(); > > beginEditCP(spriteGeo); > > { > > spriteGeo->setTypes(type); > > spriteGeo->setLengths(length); > > spriteGeo->setPositions(pos_sprite); > > spriteGeo->setMaterial(material); > > } > > endEditCP(spriteGeo); > > > > // ... add node to the scene > > > > /*###########################################################*/ > > -- > +---------------------+----------------------------+ > | VREC GmbH | | > | Matthias Stiller | | > | Robert-Bosch-Str. 7 | tel: +49 6151 4921034 | > | 64293 Darmstadt | web: http://www.vrec.de | > | Germany | mail: [EMAIL PROTECTED] | > +---------------------+----------------------------+ > > -------------------------------------------------------------- > ----------- > Take Surveys. Earn Cash. Influence the Future of IT Join > SourceForge.net's Techsay panel and you'll get the chance to > share your opinions on IT & business topics through brief > surveys-and earn cash > http://www.techsay.com/default.php?page=join.php&p=sourceforge &CID=DEVDEV > _______________________________________________ > Opensg-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/opensg-users > > ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ Opensg-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/opensg-users
