initial PAL simulation implementation

shaders/final.fsh

@@ -33,6 +33,8 @@ void main() {
 	//	hardware post-processing effects
 	#if		signal == SIGNAL_NTSC
 		color = ntsc(color);
+	#elif	signal == SIGNAL_PAL
+		color = pal(color);
 	#endif
 
 	//	physical post-processing effects

shaders/lang/en_US.lang

@@ -52,9 +52,10 @@ suffix.valBits=-bit
 
 screen.SCREEN=Screen
 
-option.signal=Signal
-value.signal.0=RGB (Off)
+option.signal=Encoding
+value.signal.0=None
 value.signal.1=NTSC
+value.signal.2=PAL
 
 option.wire=Connector
 value.wire.0=Composite

shaders/module/signal.frag

@@ -1,12 +1,16 @@
 
 #include "/var/signal.glsl"
 
-#define signal 0 // [0 1]
+#define signal 0 // [0 1 2]
 #define wire 0 // [0 1]
 
+float luminance(vec3 color) {
+	return dot(color, vec3(0.299, 0.587, 0.114));
+}
+
 vec3 ntsc(vec3 color) {
 	//	convert to YIQ
-	float y = dot(color, vec3(0.299, 0.587, 0.114));
+	float y = luminance(color);
 	float i = dot(color, vec3(0.596, -.274, -.322));
 	float q = dot(color, vec3(0.211, -.523, 0.312));
 
@@ -17,7 +21,7 @@ vec3 ntsc(vec3 color) {
 
 	//	decode faux signal
 	#if		wire == WIRE_COMPOSITE
-		float composite = phase + quad + (y * 5.500);	//	p + q + (y * 5.5MHz)
+		float composite = phase + (y * 5.500);			//	p + (y * 5.5MHz)
 		y = round(composite * 5.500) / 30.250;
 		phase = composite - quad - (y * 5.500);
 		quad = composite - phase - (y * 5.500);
@@ -28,11 +32,38 @@ vec3 ntsc(vec3 color) {
 	//	convert back to RGB
 	vec3 yiqColor = vec3(y, i, q);
 
-	vec3 outColor = vec3(0);
-	outColor.r = dot(yiqColor, vec3(1, 0.956, 0.619));
-	outColor.g = dot(yiqColor, vec3(1, -.272, -.674));
-	outColor.b = dot(yiqColor, vec3(1, -1.106, 1.703));
+	float r = dot(yiqColor, vec3(1, 0.956, 0.619));
+	float g = dot(yiqColor, vec3(1, -.272, -.674));
+	float b = dot(yiqColor, vec3(1, -1.106, 1.703));
 
-	return outColor;
+	return vec3(r, g, b).rgb;
+}
+
+vec3 pal(vec3 color) {
+	//	convert to YUV
+	float y = luminance(color);
+	float u = 0.492 * (color.b - y);
+	float v = 0.877 * (color.r - y);
+
+	//	faux pal signal
+	float carrier = 6.283 * 4.434;
+	float phase = sin(carrier) * u - cos(carrier) * v;
+	float quad = cos(carrier) * u - sin(carrier) * v;
+
+	//	decode faux signal
+	#if		wire == WIRE_COMPOSITE
+		float composite = y + phase;
+	#endif
+	u = quad * cos(carrier);
+	v = phase * sin(carrier);
+
+	//	convert back to RGB
+	vec3 yuvColor = vec3(y, u, v);
+
+	float r = y + (1.140 * v);
+	float g = y - (0.395 * u) - (0.581 * v);
+	float b = y + (2.033 * u);
+
+	return vec3(r, g, b).rgb;
 }
 

shaders/shaders.properties

@@ -13,14 +13,14 @@ profile.VR32=pixelSize=8 colorMode=1 !dithering colorDepth=1 monoPalette=2 vWarp
 
 #	-- SCREENS --
 #	default
-screen=<profile> <empty> pixelSize <empty> [COLOR] [SCREEN] [CONSOLE] [FX]
+screen=<profile> <empty> <empty> <empty> pixelSize <empty> [COLOR] [SCREEN] [CONSOLE] [FX]
 
 #	colors
 screen.COLOR.columns=3
 screen.COLOR=colorMode dithering <empty> colorDepth <empty> monoPalette hueBits satBits valBits
 
 #	screen effects
-screen.SCREEN=signal wire interlacing scanline aberration
+screen.SCREEN=signal wire <empty> <empty> interlacing scanline <empty> <empty> aberration
 
 #	console effects
 screen.CONSOLE.columns=1
@@ -29,7 +29,7 @@ screen.PSX=vWarp tWarp 	#	playstation
 screen.REALITY=hBlur 	#	nintendo 64
 
 #	custom effects
-screen.FX=dof dofRes worldCurvature worldRadius
+screen.FX=dof dofRes <empty> <empty> worldCurvature worldRadius
 
 #	-- CONDITIONALS --
 gbuffers_hand.enabled=tWarp

shaders/var/signal.glsl

@@ -1,6 +1,7 @@
 
 #define SIGNAL_RGB		0
 #define SIGNAL_NTSC		1
+#define SIGNAL_PAL		2
 
 #define WIRE_COMPOSITE	0
 #define WIRE_SVIDEO		1