prankush-tech · September 5, 2024 23:28 · Sep 5, 2024
diff --git a/Lights.glsl b/Lights.glsl
@@ -0,0 +1,50 @@
+vec3 pointLight(vec3 lightColor, float lightIntensity, vec3 normal, vec3 lightPosition, vec3 viewDirection, float specularPower, vec3 position, float lightDecay)
+{
+    vec3 lightDelta = lightPosition - position;
+    float lightDistance = length(lightDelta);
+    vec3 lightDirection = normalize(lightDelta);
+    vec3 lightReflection = reflect(- lightDirection, normal);
+
+    // Shading
+    float shading = dot(normal, lightDirection);
+    shading = max(0.0, shading);
+
+    // Specular
+    float specular = - dot(lightReflection, viewDirection);
+    specular = max(0.0, specular);
+    specular = pow(specular, specularPower);
+
+    // Decay
+    float decay = 1.0 - lightDistance * lightDecay;
+    decay = max(0.0, decay);
+
+    return lightColor * lightIntensity * decay * (shading + specular);
+}
+
+
+
+
+vec3 directionalLight(vec3 lightColor, float lightIntensity, vec3 normal, vec3 lightPosition, vec3 viewDirection, float specularPower)
+{
+    vec3 lightDirection = normalize(lightPosition);
+    vec3 lightReflection = reflect(- lightDirection, normal);
+
+    // Shading
+    float shading = dot(normal, lightDirection);
+    shading = max(0.0, shading);
+
+    // Specular
+    float specular = - dot(lightReflection, viewDirection);
+    specular = max(0.0, specular);
+    specular = pow(specular, specularPower);
+
+    return lightColor * lightIntensity * (shading + specular);
+}
+
+
+vec3 ambientLight(vec3 lightColor, float lightIntensity)
+{
+    return lightColor * lightIntensity;
+}
+
+