REVIEWED: shaders_spotlight example

It seems something is not working properly...

1 files changed, 23 insertions, 27 deletions

diff --git a/examples/shaders/resources/shaders/glsl330/spotlight.fs b/examples/shaders/resources/shaders/glsl330/spotlight.fs
index f97722c6..f20d92a8 100644
--- a/examples/shaders/resources/shaders/glsl330/spotlight.fs
+++ b/examples/shaders/resources/shaders/glsl330/spotlight.fs
@@ -1,27 +1,29 @@
 #version 330
 
+// Input vertex attributes (from vertex shader)
+in vec2 fragTexCoord;
+in vec4 fragColor;
+
 // Output fragment color
 out vec4 finalColor;
 
-#define     MAX_SPOTS			4
-#define		RADIUS				256
-#define		INNER				200
+// NOTE: Add here your custom variables
 
-// Inputs
-// array of spotlight positions
-uniform vec2 spots[MAX_SPOTS];
+#define     MAX_SPOTS			2
+#define		RADIUS				128
+#define		INNER				96
 
-uniform float screenWidth; // width of the screen
+uniform vec2 spots[MAX_SPOTS];      // Spotlight positions array
+uniform float screenWidth;          // Width of the screen
 
 void main()
 {
-
-	float alpha;
-	// get the position of the current fragment (screen coordinates!)
+	float alpha = 0.0;
+    
+	// Get the position of the current fragment (screen coordinates!)
 	vec2 pos = vec2(gl_FragCoord.x, gl_FragCoord.y);
-
 	
-	// find out which spotlight is nearest
+	// Find out which spotlight is nearest
 	float d = 65000; // some high value
 	float di = 0;
 
@@ -32,22 +34,16 @@ void main()
     }
     
     // d now equals distance to nearest spot...
-    if (d > RADIUS) {
-		alpha = 1.0;
-	} else {
-		if (d < INNER) {
-			alpha = 0.0;
-		} else {
-			alpha = (d - INNER) / (RADIUS - INNER);
-		}
+    if (d > RADIUS) alpha = 1.0;
+	else
+    {
+		if (d < INNER) alpha = 0.0;
+		else alpha = (d - INNER)/(RADIUS - INNER);
 	}
 	
-	// right hand side of screen is dimly lit, could make the
-	// threshold value user definable.
-	if (pos.x>screenWidth/2.0 && alpha >0.9) {
-		alpha = 0.9;
-	}
+	// Right hand side of screen is dimly lit, 
+    // could make the threshold value user definable
+	if ((pos.x > screenWidth/2.0) && (alpha > 0.9)) alpha = 0.9;
 
-	// could make the black out colour user definable...
-    finalColor = vec4( 0, 0, 0, alpha);
+    finalColor = vec4(0, 0, 0, alpha);
 }