quite a lot of changes that I, of course, are not going to describe;)

1 files changed, 17 insertions, 0 deletions

diff --git a/advanced_opengl/6.cubemaps/shaders/refraction.frag b/advanced_opengl/6.cubemaps/shaders/refraction.frag
new file mode 100644
index 0000000..fa01b2c
--- /dev/null
+++ b/advanced_opengl/6.cubemaps/shaders/refraction.frag
@@ -0,0 +1,17 @@
+#version 330 core
+
+in vec3 pos;
+in vec3 normal;
+
+out vec4 frag_color;
+
+uniform vec3 camera_pos;
+uniform samplerCube skybox;
+
+void main(void)
+{
+    float ratio = 1.0/1.52;
+    vec3 i = pos-camera_pos;
+    vec3 r = refract(i, normalize(normal), ratio);
+    frag_color = texture(skybox, r);
+}