Skybox

shaders/CMakeLists.txt

@@ -12,7 +12,9 @@ add_shader(flat.vert)
 add_shader(flat.frag)
 add_shader(screen.vert)
 add_shader(screen.frag)
+add_shader(skybox.vert)
+add_shader(skybox.frag)
 
 add_custom_target(shader_headers
-  DEPENDS flat.vert.h flat.frag.h screen.vert.h screen.frag.h
+  DEPENDS flat.vert.h flat.frag.h screen.vert.h screen.frag.h skybox.vert.h skybox.frag.h
   COMMENT "Generated shaders headers.")

shaders/skybox.frag

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

shaders/skybox.vert

@@ -0,0 +1,14 @@
+#version 330 core
+
+layout (location = 0) in vec3 pos;
+
+out vec3 UV;
+
+uniform mat4 VIEW; // Assuming this is free of translation
+uniform mat4 PROJECTION;
+
+void main() {
+  UV = pos;
+  vec4 projectedPos = PROJECTION * VIEW * vec4(pos, 1.0);
+  gl_Position = projectedPos.xyww;
+}