Major MariFX update:

- Complete RetroFX filter (downscale+palette).
 - Additional palettes, extending to the full range of 64.
 - Localization support (just English for now).
 - Better slider input (shift for 10x increments, alt for 5x increments)
 - Use nosave cvars for performance and so they don't end up in savegames.
 - A lot of cleanup.

gldefs.txt

@@ -128,11 +128,21 @@ HardwareShader postprocess scene
 	Texture VignetteTexture "textures/mfxvig.png"
 }
 
+HardwareShader postprocess scene
+{
+	Name "mfx_retrofx"
+	Shader "shaders/glsl/mfx_retrofx.fp" 330
+	Uniform vec2 bresl
+}
+
 HardwareShader postprocess scene
 {
 	Name "mfx_palette"
 	Shader "shaders/glsl/mfx_palette.fp" 330
 	Texture PalLUTTexture "textures/mfxpal.png"
+	Uniform vec2 sfact
+	Uniform float palsat
+	Uniform float palpow
 	Uniform float paldither
 	Uniform int palnum
 }