Have a working skybox now.

24-cubemaps/shaders/24-skybox.frag.glsl

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

24-cubemaps/shaders/24-skybox.vert.glsl

@@ -0,0 +1,14 @@
+#version 330 core
+layout (location = 0) in vec3 aPos;
+
+out vec3 TexCoords;
+
+uniform mat4 projection;
+uniform mat4 view;
+
+void main()
+{
+    TexCoords = aPos;
+    vec4 pos = projection * view * vec4(aPos, 1.0);
+    gl_Position = pos.xyww;
+}