diff --git a/retro/shaders/aann.slang b/retro/shaders/aann.slang
index 4df82fa..91e1391 100644
--- a/retro/shaders/aann.slang
+++ b/retro/shaders/aann.slang
@@ -1,5 +1,12 @@
 #version 450
 
+layout(push_constant) uniform Push
+{
+  float NOGAMMA;
+  float MASKING;
+  float BILINEAR;
+} param;
+
 layout(std140, set = 0, binding = 0) uniform UBO
 {
     mat4 MVP;
@@ -13,14 +20,14 @@ layout(std140, set = 0, binding = 0) uniform UBO
 // Licensed MIT
 
 // set to true to interpolate in sRGB instead of a pseudo-perceptual colorspace
-#define NOGAMMA false
+#pragma parameter NOGAMMA "Interpolate in sRGB" 0.0 0.0 1.0 1.0
 
 // set to true to compensate for 8px overscan masking
 // Note: overscan compensation slightly alters (extremifies) the pixel aspect ratio of the game if said pixel aspect ratio is not exactly 1:1
-#define MASKING false
+#pragma parameter MASKING "8px Overscan Masking" 0.0 0.0 1.0 1.0
 
 // Do bilinear filtering instead of anti-aliased nearest neighbor filtering (used for debugging color)
-#define BILINEAR false
+#pragma parameter BILINEAR "Force Bilinear Filtering" 0.0 0.0 1.0 1.0
 
 // http://i.imgur.com/kzwZkVf.png
 
@@ -69,7 +76,7 @@ vec3 linear2srgb(vec3 linear) {
 #define BS 0.0722
 
 vec3 rgb2vry(vec3 rgb) {
-    if (NOGAMMA) 
+    if (param.NOGAMMA == 1.0)
         return rgb;
 
     // https://en.wikipedia.org/wiki/Opponent_process
@@ -87,7 +94,7 @@ vec3 rgb2vry(vec3 rgb) {
     return vry;
 }
 vec3 vry2rgb(vec3 vry) {
-    if (NOGAMMA)
+    if (param.NOGAMMA == 1.0)
         return vry;
 
     // Magic.
@@ -103,7 +110,7 @@ vec3 vry2rgb(vec3 vry) {
 }
 
 vec3 vry_interp(vec3 first, vec3 second, float frac) {
-    if (NOGAMMA) 
+    if (param.NOGAMMA == 1.0)
         return first*NOT(frac) + second*YES(frac);
     
     // Because the chroma values were generated on linear light, but the luma must be interpolated in perceptual gamma (3)
@@ -124,7 +131,7 @@ vec3 vry_interp(vec3 first, vec3 second, float frac) {
 }
 
 vec3 percent(float ssize, float tsize, float coord) {
-    if (BILINEAR) 
+    if (param.BILINEAR == 1.0)
         tsize = ssize;
     
     float minfull = (coord*tsize - 0.5)/tsize*ssize;
@@ -146,7 +153,7 @@ vec3 percent(float ssize, float tsize, float coord) {
 void main() {
     vec2 viewportSize = global.OutputSize.xy;
     vec2 gameCoord = vTexCoord;
-    if (MASKING) {
+    if (param.MASKING == 1.0) {
         float hscale = viewportSize.x/global.SourceSize.x;
         float vscale = viewportSize.y/global.SourceSize.y;