Let's say I have
glGenBuffers(1, &vertexbuffer);
glGenBuffers(1, &indexbuffer);
glGenBuffers(1, &normalbuffer);
glBindBuffer(GL_ARRAY_BUFFER,vertexbuffer);
glBufferData(GL_ARRAY_BUFFER,sizeof(float)*numVertices*3,verticesArr,GL_STATIC_DRAW);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, indexbuffer);
glBufferData(GL_ELEMENT_ARRAY_BUFFER,numIndices*sizeof(GLuint)*3,indicesArr,GL_STATIC_DRAW);
glBindBuffer(GL_ARRAY_BUFFER,normalbuffer);
glBufferData(GL_ARRAY_BUFFER,sizeof(float)*numVertices*3, normalsArr, GL_STATIC_DRAW);
glEnableVertexAttribArray(0);
glBindBuffer(GL_ARRAY_BUFFER,vertexbuffer);
glVertexAttribPointer( 0, 3GL_FLOAT,GL_FALSE,24, (void*)(0));
glEnableVertexAttribArray(1);
glBindBuffer(GL_ARRAY_BUFFER,normalbuffer);
glVertexAttribPointer( 1, 3GL_FLOAT,GL_FALSE,24, (void*)(12));
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER,indexbuffer);
is it possible to tell OpenGl to use the normals in buffer for light "calculation"?
Basically I want to know how to say to OpenGl: "Here are my normals take them and make me nice lighting". Since I didn't find answer in google I posted my question here. Thank you for attention.