added 'hard' scanline option

shaders/final.fsh

@@ -4,7 +4,6 @@
 
 //#define aberration
 //#define hBlur
-//#define scanlines
 
 varying vec2 texcoord;
 
@@ -13,6 +12,7 @@ uniform float viewWidth;
 
 #include "/module/aberration.frag"
 #include "/module/horizontal_blur.frag"
+#include "/module/scanline.frag"
 
 void main() {
 	vec3 color;
@@ -26,11 +26,8 @@ void main() {
 		color.rb = aberrate().rb;
 	#endif
 
-	#ifdef scanlines
+	#if scanline > 0
-		if(mod(int(gl_FragCoord.y / (pixelSize * 2)), 2) == 0)
+		color = scanlines(color);
-			color.rgb *= 0.95;
-		else
-			color.rgb /= 0.95;
 	#endif
 
 	gl_FragData[0] = vec4(color, 1);

shaders/lang/en_US.lang

@@ -55,6 +55,9 @@ screen.SCREEN=Screen
 option.interlacing=Interlacing
 
 option.scanlines=Scanlines
+value.scanlines.0=Off
+value.scanlines.1=Soft
+value.scanlines.2=Hard
 
 option.aberration=Chromatic Aberration
 

shaders/module/scanline.frag

@@ -0,0 +1,17 @@
+
+#include "/var/scanline.glsl"
+
+#define scanline 0 // [0 1 2]
+
+public void scanlines() {
+	#if		scanline == SCANLINE_SOFT
+		if(mod(int(gl_FragCoord.y) / (pixelSize * 2), 2) == 0)
+			color.rgb *= 0.95;
+		else
+			color.rgb /= 0.95;
+	#elif	scanline == SCANLINE_HARD
+		if(mod(int(gl_FragCoord.y) / (pixelSize * 2), 2) == 0)
+			color.rgb *= 0.5;
+	#endif
+}
+

shaders/var/scanline.glsl

@@ -0,0 +1,5 @@
+
+#define SCANLINE_SOFT 1
+#define SCANLINE_HARD 2
+#define SCANLINE_STRETCH 3
+