Implement skybox

shaders/sb_frag.glsl

@@ -0,0 +1,11 @@
+#version 330 core
+
+in vec3 uv_coords;
+
+uniform samplerCube cubemap;
+
+out vec4 color;
+
+void main() {
+  color = texture(cubemap, uv_coords);
+}

shaders/sb_vert.glsl

@@ -0,0 +1,16 @@
+#version 330 core
+
+layout(location=0) in vec3 position;
+layout(location=1) in vec3 normal;
+layout(location=2) in vec2 uv;
+
+uniform mat4 view;
+uniform mat4 projection;
+
+out vec3 uv_coords;
+
+void main() {
+  vec4 pos    = projection * view * vec4(position, 1.0);
+  gl_Position = pos.xyww;
+  uv_coords   = position;
+}