Fresnel Shader

Default inputs:

default_input = {
    'texture_scale': Vec2(1, 1),
    'texture_offset': Vec2(0.0, 0.0),
    'fresnel_color': color.light_gray,
    'fresnel_texture': Func(load_texture, 'white_cube'),
}

Example

from ursina import *
import random

app = Ursina()
b = Entity(model='sphere', color=color.black, shader=fresnel_shader)
ground = Entity(model='plane', color=color.gray, shader=fresnel_shader, y=-1, scale=64, texture='grass', texture_scale=Vec2(32,32))
ground.set_shader_input('fresnel_color', color.gray)
ground.set_shader_input('fresnel_texture', load_texture('white_cube'))
# spawn multiple cubes
for i in range(16):
    e = Entity(model='cube', origin_y=-.5, scale=2, texture='brick', texture_scale=(1,2),
        x=random.uniform(-8,8), z=random.uniform(-8,8)+8,
        scale_y=random.uniform(2,3), color=color.hsv(0,0,random.uniform(.9,1)),
        shader=fresnel_shader)
    e.set_shader_input('fresnel_texture', load_texture('brick'))

def update():
    for e in scene.entities:
        if getattr(e, 'shader', None) == fresnel_shader:
            e.set_shader_input('camera_world_position', camera.world_position)
EditorCamera()
app.run()