20 lines
432 B
GLSL
20 lines
432 B
GLSL
#version 330 core
|
|
|
|
#define AIR_IOR 1.0
|
|
#define GLASS_IOR 1.52
|
|
|
|
in vec3 vert_normal;
|
|
in vec3 frag_position;
|
|
|
|
uniform vec3 camera_position;
|
|
uniform samplerCube cubemap;
|
|
|
|
out vec4 color;
|
|
|
|
void main() {
|
|
vec3 view_direction = normalize(frag_position - camera_position);
|
|
vec3 refract_direction = refract(view_direction, normalize(vert_normal), AIR_IOR / GLASS_IOR);
|
|
|
|
color = vec4(texture(cubemap, refract_direction).rgb, 1.0);
|
|
}
|