1 files changed, 18 insertions, 0 deletions
diff --git a/shaders/sky.frag b/shaders/sky.frag
new file mode 100644
index 0000000..743f538
--- /dev/null
+++ b/shaders/sky.frag
@@ -0,0 +1,18 @@
+#version 150
+#extension GL_ARB_explicit_attrib_location : enable
+#extension GL_ARB_explicit_uniform_location : enable
+
+layout(location = 0) out vec4 frag_color ;
+layout(location = 1) uniform vec4 globalAmbient ;
+
+uniform sampler2D texture ;
+uniform sampler2D night_tex ;
+in vec2 texcoord;
+
+void main() {
+    vec3 color2 = texture2D(texture,texcoord).xyz ;
+    frag_color = 
+        mix(texture2D(night_tex,texcoord) * (1-globalAmbient.a),
+            texture2D(texture,texcoord) * vec4(normalize(globalAmbient.xyz),1),
+            (globalAmbient.a + 1) / 2) ;
+}