I am trying to implement Phong lighting. In some tutorials specular lighting is added to ambient and diffuse lighting and then total lighting is multiplied by texture color. I also saw a tutorial w...

I am writing a small test of Phong shading, and am hitting my head against a brick wall trying to get the specular component working. It appears to work correctly, except that the specular light is...

I'm trying to implement ambient occlusion on a voxel-based mesh and get these flickering white pixels at the edges of faces: Here is my fragment shader: #version 120 varying vec4 color; varyin...