added hsb effect and added #143

effects/effects/huesatbri.frag

@@ -0,0 +1,42 @@
+#version 110
+
+uniform float hue;
+uniform float saturation;
+uniform float brightness;
+
+uniform sampler2D myTexture;
+varying vec2 vTexCoord;
+
+vec3 rgb2hsv(vec3 c) {
+    vec4 K = vec4(0.0, -1.0 / 3.0, 2.0 / 3.0, -1.0);
+    vec4 p = mix(vec4(c.bg, K.wz), vec4(c.gb, K.xy), step(c.b, c.g));
+    vec4 q = mix(vec4(p.xyw, c.r), vec4(c.r, p.yzx), step(p.x, c.r));
+
+    float d = q.x - min(q.w, q.y);
+    float e = 1.0e-10;
+    return vec3(abs(q.z + (q.w - q.y) / (6.0 * d + e)), d / (q.x + e), q.x);
+}
+
+vec3 hsv2rgb(vec3 c) {
+    vec4 K = vec4(1.0, 2.0 / 3.0, 1.0 / 3.0, 3.0);
+    vec3 p = abs(fract(c.xxx + K.xyz) * 6.0 - K.www);
+    return c.z * mix(K.xxx, clamp(p - K.xxx, 0.0, 1.0), c.y);
+}
+
+void main(void) {	
+	vec4 tex_color = texture2D(myTexture, vTexCoord);
+
+	vec3 hsv = rgb2hsv(tex_color.rgb);
+	hsv.r += (hue/360.0);
+	hsv.g *= (saturation*0.01);
+	hsv.b *= (brightness*0.01);
+
+	vec3 rgb = hsv2rgb(hsv);
+
+	gl_FragColor = vec4(
+		rgb.r,
+		rgb.g,
+		rgb.b,
+		tex_color.a
+	);
+}

effects/effects/huesatbri.xml

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<effect name="Hue/Saturation/Brightness" category="Color">
+	<row name="Hue">
+		<field type="double" default="0" id="hue"/>
+	</row>
+	<row name="Saturation">
+		<field type="double" min="0" default="100" id="saturation"/>
+	</row>
+	<row name="Brightness">
+		<field type="double" min="0" default="100" id="brightness"/>
+	</row>
+	<shader vert="common.vert" frag="huesatbri.frag"/>
+</effect>