BUMP MAPPING

Teksture izboklin predstavljajo metodo v računalniški grafiki, s katero lahko prikažemo strukturo površine objekta. Za njeno delovanje potrebujemo svetlobni vir in perturbirane normale. V našem programu Bumper je uporabljen zemljevid normal, v katerem so shranjene normale v barvnih kanalih. Napisan je z uporabo grafičnih knjižnic OpenGL, ki ima vgrajeno tvorbo GLSL (Graphics Library Shader Language) in dveh senčilnikov, in sicer senčilnika oglišč in senčilnika fragmentov, s pomočjo katerih prikažemo tridimenzionalni objekt z izboklinami.Bump mapping is a method in computer graphics where we can render a structure of a surface on an object. To work properly we need to implement the proper lighting and have perturbed normals. In the Bumper application we use a map of normals, stored in the color channels to encode the normal coordinates. Bumper is written with the use of OpenGL and its GLSL (graphics library shader language). We use GLSL to write two shaders, vertex shader and fragment shader. We apply them to render a three-dimensional object with bumps