I found out what my problem was. Since I was adding to vectors, I needed to set vec.w = 1;
Thanks anyway! 2017-05-22 20:31 GMT+01:00 Raymond de Vries <ree...@xs4all.nl>: > Hi Bruno, > > Can you provide more information about your setup? Platform, gfx card, osg > version, etc. Have you seen and tried the osg example osgdrawinstanced? > Writing "not working" is probably too little info for people to help you ;-) > > Cheers, > Raymond > > > > > On 5/22/2017 8:17 PM, Bruno Oliveira wrote: > > Hi, > > > I want to render several simple quads ( a simple rectangle). I pass the > quad centers via a 2D texture, and try to render them with the following > vertex shader: > > > > "#version 120\n" > "#extension GL_EXT_draw_instanced : enable\n" > "\n" > "uniform sampler2D texVert;\n" > "uniform sampler2D texColor;\n" > "uniform float texSize;\n" > "\n" > "void main() {\n" > "\n" > " float row = float(gl_InstanceID) / texSize;\n" > "\n" > " vec2 uv = vec2(fract(row), floor(row) / texSize);\n" > " vec4 vert = gl_Vertex + texture2D(texVert, uv);\n" > "\n" > " gl_Position = gl_ModelViewProjectionMatrix * vert;\n" > "\n" > "}\n" > > > > *This is my code for creating 1000 quads:* > > this->setUseDisplayList(false), > this->setUseVertexBufferObjects(true); > > // Build Geometry > // Simple Quad > osg::ref_ptr<osg::Vec3Array> vertices = new osg::Vec3Array(4); > (*vertices)[0].set(-500, -500, 0.f ); > (*vertices)[1].set( 500, -500, 0.f ); > (*vertices)[2].set( 500, 500, 0.f ); > (*vertices)[3].set(-500, 500, 0.f ); > > this->setUseDisplayList(false); > this->setUseVertexBufferObjects(true); > this->setVertexArray(vertices.get()); > this->addPrimitiveSet(new osg::DrawArrays(GL_QUADS, 0, 4, 1000)); > > > *IMPORTANT NOTE*: > *If I use simple GL_POINTS, my code works fine and renders correclty 1000 > points: * > > osg::ref_ptr<osg::Vec3Array> vertices = new osg::Vec3Array(1); > (*vertices)[0].set(0, 0, 0.f ); > > this->setVertexArray(vertices); > > this->addPrimitiveSet( new osg::DrawArrays(GL_POINTS, 0, 1, 1000) ); > > > > > ------------------------------ > [image: AVG logo] <http://www.avg.com/internet-security> > > This email has been checked for viruses by AVG antivirus software. > www.avg.com <http://www.avg.com/internet-security> > > <#m_6652820044422372515_DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2> > > > _______________________________________________ > osg-users mailing > listosg-users@lists.openscenegraph.orghttp://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > > > > _______________________________________________ > osg-users mailing list > osg-users@lists.openscenegraph.org > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > >
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