1 files changed, 47 insertions, 4 deletions
diff --git a/Shaders/world.frag b/Shaders/world.frag
index c23c923..881127b 100644
--- a/Shaders/world.frag
+++ b/Shaders/world.frag
@@ -6,12 +6,55 @@ precision highp float;
 precision mediump float;
 #endif
 
-//uniform sampler2D texture;
+uniform sampler2D textu;
+uniform sampler2D normu;
 
-//in vec3 texCoord;
+in vec2 texCoord;
+in vec4 fragCoord;
 out vec4 FragColor;
 
+uniform vec3 LightPos[32];
+uniform vec4 LightColor[32];
+uniform int LightNum;
+uniform vec4 AmbientLight;
+uniform int Flipped;
+
 void main()
 {
-    FragColor = vec4(1.0, 0.0, 0.0, 1.0);
-}
+    // Quadratic light falloff
+    vec3 Falloff = vec3(0.1, 0.2, 0.0);
+
+    vec4 DiffuseColor = texture2D(textu, texCoord);
+
+    if (DiffuseColor.a < 0.1f)
+        discard;
+
+    vec3 NormalMap = texture2D(normu, texCoord).rgb;
+    vec3 SumLight = vec3(0.0);
+
+    for (int i = 0; i < LightNum; i++) {
+        vec3 LightDir = vec3(LightPos[i].xy - fragCoord.xy, LightPos[i].z);
+        if (Flipped == 1)
+            LightDir.x = -LightDir.x;
+
+        float D = length(LightDir);
+
+        vec3 N = normalize(NormalMap * 2.0 - 1.0);
+        vec3 L = normalize(LightDir);
+
+        vec3 Diffuse = 
+            (LightColor[i].rgb * LightColor[i].a) * max(dot(N, L), 0.0);
+
+        vec3 Ambient = AmbientLight.rgb * AmbientLight.a;
+
+        float Attenuation = 
+            1.0 / (Falloff.x + (Falloff.y * D) + (Falloff.z * D * D));
+
+        vec3 Intensity = Ambient + Diffuse + Attenuation;
+        vec3 FinalColor = DiffuseColor.rgb * Intensity;
+
+        SumLight += FinalColor;
+    }
+
+    FragColor = vec4(SumLight, DiffuseColor.a);
+};