Work on distortion shader

2025-11-15 23:17:44 +00:00
parent d436b853eb
commit 1205823ddb
12 changed files with 108 additions and 119 deletions
@@ -1,10 +1,23 @@
 #version 450 core
 in vec2 texPos;
 in vec2 distmask;
+in vec2 pinch;
 out vec4 fColor;
 layout (binding = 1) uniform sampler2D screenTexture;
-float x = min(1, dot(distmask,distmask));
+float x = 1 - min(1, dot(distmask,distmask));
+float xab = abs(distmask.x);
+float yab = abs(distmask.y);
 void main()
 {
-    fColor = mix(texture(screenTexture, texPos),vec4(1,0,0,1),x);
+    fColor = (xab < 1 && yab < 1 
+            //? vec4 (0.5*(distmask.x+1),0.5*(distmask.y+1),0,1) 
+            ? vec4 (0.5*(distmask.x+1),0.5*(distmask.y+1),0,1) 
+            : texture(screenTexture, texPos));
+    //fColor = texture(screenTexture, (texPos + x*x*pinch));
+    //fColor = vec4
+    //    ( texture(screenTexture, (texPos + x*x*pinch)).r
+    //    , texture(screenTexture, (texPos - x*x*pinch)).g
+    //    , texture(screenTexture, (texPos - x*x*(pinch.yx))).b
+    //    , texture(screenTexture, texPos).a
+    //    ) ;
 }