Add parameters to the Vignette shader

assets/shaders/defaultshaders.ini

@@ -28,6 +28,16 @@ Name=Vignette
 Author=Henrik
 Fragment=vignette.fsh
 Vertex=fxaa.vsh
+SettingName1=Power
+SettingDefaultValue1=0.6
+SettingMaxValue1=2.0
+SettingMinValue1=0.1
+SettingStep1=0.1
+SettingName2=Aspect
+SettingDefaultValue2=1.0
+SettingMaxValue2=2.0
+SettingMinValue2=0.5
+SettingStep2=0.1
 [Bloom]
 Name=Bloom Shader
 Fragment=bloom.fsh
@@ -47,7 +57,7 @@ Vertex=fxaa.vsh
 SettingName1=Amount
 SettingDefaultValue1=1.5
 SettingMaxValue1=3.0
-SettingMinValue1=1.0
+SettingMinValue1=0.1
 SettingStep1=0.1
 [Scanlines]
 Name=Scanlines (CRT)

assets/shaders/vignette.fsh

@@ -8,9 +8,15 @@ precision mediump int;
 uniform sampler2D sampler0;
 varying vec2 v_texcoord0;
 
+uniform vec4 u_setting;
+
 void main() {
-  float vignette = 1.1 - 0.6 * (dot(v_texcoord0 - 0.5, v_texcoord0 - 0.5) * 2.0);
+  vec2 diff = v_texcoord0 - 0.5;
+  diff.x *= u_setting.y;
+  diff.y /= u_setting.y;
+  float vignette = 1.0 - min(1.0, u_setting.x * (dot(diff, diff) * 2.0));
   vec3 rgb = texture2D(sampler0, v_texcoord0.xy).xyz;
+  rgb *= vignette;
   gl_FragColor.rgb = vignette * rgb;
   gl_FragColor.a = 1.0;
 }