Hi, I am trying to make a dynamic cube with osg. The idea is to render into a cube map the +X, -X, +Y, -Y, +Z and -Z view from the camera view point at each frame. Then the cube map is textured on a reflector surface (a plane) within a shader. I would like to see other objects (sphere, cube) reflecting in my plane as it was a mirror. I managed to make the cube map and to texture it on my plane but the reflection is not correct, and I need some ideas to correct my app.
Ok, so I build a cubemap texture with osg, then I create 6 camera nodes. theses cameras are looking at +X, -X, +Y, -Y, +Z and -Z directions and are attached with a callback to the main camera position. I use this command to attach the cube map texture for each camera : Code: camera->attach(osg::Camera::COLOR_BUFFER, m_textureEnvMap, 0, i); Then I use this fragment shader to map the cube map on the plane : Code: // world space eye vector vec3 E = normalize(posWorld.xyz - cameraPosWorld); // plane world vector (hadcoding!) vec3 N = vec3(0,1,0); vec3 coord = reflect(E, N); vec3 reflectColor = textureCube(cubeMap, vec3(coord.x, coord.y, coord.z)).rgb; posWorld is the current fragment world position (posWorld = modelMatWorld * gl_Vertex); cameraPosWorld is the camera world position (passed with uniform). I would like to have some advice and ideas about my program. Did anyone already try to make dynamic cube ? What did I miss ? Thank you! Cheers, Sebastien ------------------ Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=23848#23848 Attachments: http://forum.openscenegraph.org//files/sans_titre_2_182.jpg http://forum.openscenegraph.org//files/sans_titre_243.jpg _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
