Changeset 2146Tweet

Timestamp:

Dec 18, 2012, 8:48:08 PM (7 years ago)

Author:

touky

Message:

shiny.lolfx now has a PointLight & a DirectionalLight.
Sorry for all the fine projects that use this shader !

File:

• trunk/src/easymesh/shiny.lolfx (modified) (4 diffs)

trunk/src/easymesh/shiny.lolfx

@@ -43 +43 @@
 
 // FIXME: the light direction should be passed in the code
-vec3 in_LightDir = vec3(0.3, 0.3, 0.7);
-vec4 in_Light2_Pos = vec4(-100.0, 100.0, -100.0, 1.0);
+vec3 in_LightDir = vec3(-0.3, -0.3, -0.7);
+vec4 in_Light2_Pos = vec4(0.0, 10.0, 0.0, 1.0);
+float in_Light2_Radius = 20.0;
+vec3 in_Light2_diffuse = vec3(0.4, 0.4, 1.0);
 
 void main(void)
@@ -55 +57 @@
     float ambient_mul = 0.5;
     vec3 ambient_color = vec3(0.0, 0.0, 0.0);
-    vec3 diffuse_color = vec3(1.0, 1.0, 0.6);
+    vec3 diffuse_color = vec3(0.4, 0.4, 0.4);
     vec3 specular_color = vec3(1.0, 1.0, 0.6);
 
@@ -66 +68 @@
     float sdotn = 0.0;
 
-    /*
     //Light calculation for directional light
-    s = normalize(in_LightDir);
+    s = normalize(-in_LightDir);
     v = normalize(-pass_Vertex.xyz);
-    r = reflect(-s, pass_TNormal);
+    r = reflect(s, pass_TNormal);
 
     sdotn = max(dot(s, pass_TNormal), 0.0);
@@ -77 +78 @@
         specular += specular_color * specular_reflect
                  * pow(max(dot(r, v), 0.0), specular_power);
-    */
 
+    
     //Light calculation for point light
-    s = normalize((in_View * in_Light2_Pos).xyz - pass_Vertex.xyz);
+        vec3 tmpLightDir = (in_View * in_Light2_Pos).xyz - pass_Vertex.xyz;
+        float light_radius_mod = max(0.0, 1.0 - (length(tmpLightDir) / in_Light2_Radius));
+    s = normalize(tmpLightDir);
     v = normalize(-pass_Vertex.xyz);
     r = reflect(-s, pass_TNormal);
 
     sdotn = max(dot(s, pass_TNormal), 0.0);
-    diffuse += diffuse_color * sdotn;
-    //if (sdotn > 0.0)
-    //    specular += specular_color * specular_reflect
-    //             * pow(max(dot(r, v), 0.0), specular_power);
-
+    diffuse += in_Light2_diffuse * min(sdotn, light_radius_mod);
+    if (sdotn > 0.0 && light_radius_mod > 0.0)
+        specular += specular_color * min(specular_reflect, light_radius_mod)
+                 * pow(max(dot(r, v), 0.0), specular_power);
+    
 
     vec3 light = ambient + diffuse + specular;