updated README

README.md

@@ -5,6 +5,7 @@ aimed at providing a variety of effects in the vein of its parent project.
 
 ## Features
 
+- Affine Texture Warping
 - Chromatic Aberration
 - Color depth reduction
 - Depth of Field
@@ -12,13 +13,13 @@ aimed at providing a variety of effects in the vein of its parent project.
 - Downscaling
 - Horizontal Blur
 - Interlacing
+- Monochrome Mode & Palettes
 - Scanlines
 - Screen-Space Vertex Warping
-- Affine Texture Warping
 - World Curvature
 
 ## Acknowledgements
 
 - [Alex Charlton's post "Dithering on the GPU"](http://alex-charlton.com/posts/Dithering_on_the_GPU/).
-- [BSL Shaders by CaptainTatsu](https://bitslablab.com/bslshaders/), whose downscale effect was my inspiration for forking a shader.
+- [BSL Shaders by CaptainTatsu](https://bitslablab.com/bslshaders/). Combining downscale with dithering is the reason I forked a shader in the first place.
 

shaders/composite.fsh

@@ -5,19 +5,13 @@
 float renderRes = pixelSize;
 
 #define dithering // whether or not to apply dithering
-#define colorMode 0 // hsv/rgb [0 1]
-
-#define hueSteps 4 // the number of hues to use [2 4 8 16 32 64]
-#define satSteps 4 // the number of saturations to use [2 4 8 16 32 64]
-#define valSteps 4 // the number of lightnesses to use [2 4 8 16 32 64] 
-
-#define rgbSteps 4 // the number of rgb values to use [2 4 8 16 32 64]
 
 uniform sampler2D gcolor;
 uniform float viewWidth, viewHeight;
 
 varying vec2 texcoord;
 
+#include "/module/color_depth.frag"
 #include "/module/dof.frag"
 #include "/module/interlace.frag"
 
@@ -104,8 +98,8 @@ vec3[2] closestColors(float hue) {
 }
 
 float lightnessStep(float l, float lightnessSteps) {
-    /* Quantize the lightness to one of `lightnessSteps` values */
+    /* Quantize the lightness to one of `lightnessSteps` values */;
-    return floor((0.5 + l * (lightnessSteps - 1.0))) / (lightnessSteps - 1.0);
+  	return floor((0.5 + l * (lightnessSteps - 1.0))) / (lightnessSteps - 1.0);
 }
 
 float dither(float color, float dithersteps) {
@@ -138,20 +132,25 @@ void main() {
     vec3 final;
     #ifdef dithering
         #if colorMode == 0
-            vec3 filtered = vec3(dither(color.x, hueSteps), dither(color.y, satSteps), dither(color.z, valSteps)).rgb;
+            vec3 filtered = vec3(dither(color.x, hueMax), dither(color.y, satMax), dither(color.z, valMax)).rgb;
             final = hsv2rgb(filtered);
         #else
-            final = vec3(dither(color.r, rgbSteps), dither(color.g, rgbSteps), dither(color.b, rgbSteps));
+            final = vec3(dither(color.r, colormax.x), dither(color.g, colormax.y), dither(color.b, colormax.z));
         #endif
     #else
         #if colorMode == 0
-            vec3 filtered = vec3(lightnessStep(color.x, hueSteps), lightnessStep(color.y, satSteps), lightnessStep(color.z, valSteps)).rgb;
+            vec3 filtered = vec3(lightnessStep(color.x, hueMax), lightnessStep(color.y, satMax), lightnessStep(color.z, valMax)).rgb;
             final = hsv2rgb(filtered);
         #else
-            final = vec3(lightnessStep(color.r, rgbSteps), lightnessStep(color.g, rgbSteps), lightnessStep(color.b, rgbSteps)).rgb;
+            final = vec3(lightnessStep(color.r, colormax.x), lightnessStep(color.g, colormax.y), lightnessStep(color.b, colormax.z)).rgb;
         #endif
     #endif
 
+    #if colorMode == 1 && colorDepth == 1
+        if(final.r == 1)
+            final = monoColor;
+    #endif
+
 	#ifdef interlacing
 		/* DRAWBUFFERS:01 */
 		//	pull previous buffer

shaders/lang/en_US.lang

@@ -2,8 +2,11 @@
 profile.DEFAULT=Default
 profile.AEON=Aeon Upstream
 profile.DOS=DOS
+profile.DOTMATRIX=Dot Matrix Game
+profile.OBRADINN=Return of the Obra Dinn
 profile.PSX=PSX
 profile.REALITY=Project Reality
+profile.SNES=Super Famicom
 profile.VR32=VR32
 
 option.pixelSize=Downscaling
@@ -18,10 +21,25 @@ option.colorMode=Color Mode
 value.colorMode.0=HSV
 value.colorMode.1=RGB
 option.dithering=Dithering
-option.rgbSteps=RGB Depth
+option.colorDepth=RGB Depth
-option.hueSteps=Hue Depth
+value.colorDepth.1=Monochrome
-option.satSteps=Saturation Depth
+value.colorDepth.3=3-bit
-option.valSteps=Value Depth
+value.colorDepth.6=6-bit
+value.colorDepth.8=8-bit
+value.colorDepth.12=12-bit
+value.colorDepth.15=15-bit
+value.colorDepth.18=18-bit
+value.colorDepth.24=Truecolor
+option.monoPalette=Mono Palette
+value.monoPalette.0=Black & White
+value.monoPalette.1=Dot Matrix
+value.monoPalette.2=Paint the Town
+option.hueBits=Hue Depth
+suffix.hueBits=-bit
+option.satBits=Saturation Depth
+suffix.satBits=-bit
+option.valBits=Value Depth
+suffix.valBits=-bit
 
 screen.SCREEN=Screen
 option.interlacing=Interlacing

shaders/module/color_depth.frag

@@ -0,0 +1,53 @@
+
+#define colorMode 0 // [0 1]
+
+#define hueBits 2 // [1 2 3 4 5 6 7 8]
+#define satBits 2 // [1 2 3 4 5 6 7 8]
+#define valBits 2 // [1 2 3 4 5 6 7 8]
+
+#define colorDepth 6 // [1 3 6 8 12 15 18 24]
+#define monoPalette 0 // [0 1 2]
+
+#if colorMode == 0
+	//	-- HSV --
+
+	float bit_max(int bits) {
+		return pow(2, bits);
+	}
+
+	float hueMax = bit_max(hueBits);
+	float satMax = bit_max(satBits);
+	float valMax = bit_max(valBits);
+
+#else
+	//	-- RGB --
+
+	#if		colorDepth == 1
+		vec3 colormax = vec3(2, 1, 1);
+	#elif	colorDepth == 3
+		vec3 colormax = vec3(2, 2, 2);
+	#elif	colorDepth == 6
+		vec3 colormax = vec3(4, 4, 4);
+	#elif	colorDepth == 8
+		//	8-bit is 3:3:2
+		vec3 colormax = vec3(8, 8, 4);
+	#elif	colorDepth == 12
+		vec3 colormax = vec3(16, 16, 16);
+	#elif	colorDepth == 15
+		vec3 colormax = vec3(32, 32, 32);
+	#elif	colorDepth == 18
+		vec3 colormax = vec3(64, 64, 64);
+	#elif	colorDepth == 24
+		vec3 colormax = vec3(256, 256, 256);
+	#endif
+
+	#if		monoPalette == 0
+		vec3 monoColor = vec3(1, 1, 1);
+	#elif	monoPalette == 1
+		vec3 monoColor = vec3(0.48, 0.72, 0.28);
+	#elif	monoPalette == 2
+		vec3 monoColor = vec3(1, 0, 0);
+	#endif
+
+#endif
+

shaders/shaders.properties

@@ -1,12 +1,15 @@
-sliders=pixelSize hueSteps satSteps valSteps rgbSteps vWarp worldRadius
+sliders=pixelSize colorDepth hueBits satBits valBits vWarp worldRadius
 
 #	-- PROFILES --
-profile.DEFAULT=pixelSize=2 colorMode=0 dithering hueSteps=4 satSteps=4 valSteps=4 vWarp=0 !tWarp !hBlur !interlacing
+profile.DEFAULT=pixelSize=2 colorMode=0 dithering hueBits=2 satBits=2 valBits=2 vWarp=0 !tWarp !hBlur !interlacing
-profile.AEON=pixelSize=1 colorMode=0 dithering hueSteps=8 satSteps=4 valSteps=4 vWarp=0 !tWarp !hBlur !interlacing
+profile.AEON=pixelSize=1 colorMode=0 dithering hueBits=3 satBits=2 valBits=2 vWarp=0 !tWarp !hBlur !interlacing
-profile.DOS=pixelSize=4 colorMode=1 dithering rgbSteps=2 vWarp=1 !tWarp !hBlur !interlacing
+profile.DOS=pixelSize=4 colorMode=1 dithering colorDepth=3 vWarp=1 !tWarp !hBlur !interlacing
-profile.PSX=pixelSize=2 colorMode=1 !dithering rgbSteps=16 vWarp=2 tWarp !hBlur interlacing
+profile.DOTMATRIX=pixelSize=4 colorMode=1 colorDepth=1 monoPalette=1 dithering vWarp=1 !tWarp !hBlur !interlacing
+profile.OBRADINN=pixelSize=2 colorMode=1 colorDepth=1 monoPalette=0 dithering vWarp=0 !tWarp !hBlur !interlacing
+profile.PSX=pixelSize=2 colorMode=1 !dithering colorDepth=24 vWarp=2 tWarp !hBlur interlacing
 profile.REALITY=profile.PSX vWarp=0 !tWarp hBlur interlacing
-profile.VR32=pixelSize=8 colorMode=0 !dithering hueSteps=2 satSteps=2 valSteps=2 vWarp=1 !tWarp !hBlur !interlacing
+profile.SNES=pixelSize=4 colorMode=1 dithering colorDepth=15 vWarp=1 !tWarp !hBlur interlacing
+profile.VR32=pixelSize=8 colorMode=1 !dithering colorDepth=1 monoPalette=2 vWarp=1 !tWarp !hBlur !interlacing
 
 #	-- SCREENS --
 #	default
@@ -14,7 +17,7 @@ screen=<profile> <empty> pixelSize <empty> [COLOR] [SCREEN] [CONSOLE] [FX]
 
 #	colors
 screen.COLOR.columns=3
-screen.COLOR=colorMode dithering <empty> rgbSteps <empty> <empty> hueSteps satSteps valSteps
+screen.COLOR=colorMode dithering <empty> colorDepth <empty> monoPalette hueBits satBits valBits
 
 #	screen effects
 screen.SCREEN=interlacing scanlines aberration