adjusted fxaa shader start

assets/shaders/fxaa.frag

@@ -1,8 +1,13 @@
 #version 450
 
+layout(set = 0, binding = 0) uniform sampler2D ppIN;
+
+layout (location = 0) in vec2 outUV;
+
 layout(location = 0) out vec4 outColor;
 
 void main()
 {
-    //outColor = vec4(1.0);
+  vec3 color = texture(ppIN, outUV).rgb;
+  outColor = vec4(color, 1.0);
 }

assets/shaders/fxaa.vert

@@ -4,6 +4,6 @@ layout (location = 0) out vec2 outUV;
 
 void main()
 {
-  //outUV = vec2((gl_VertexIndex << 1) & 2, gl_VertexIndex & 2);
-  //gl_Position = vec4(outUV * 2.0f - 1.0f, 0.0f, 1.0f);
+  outUV = vec2((gl_VertexIndex << 1) & 2, gl_VertexIndex & 2);
+  gl_Position = vec4(outUV * 2.0f - 1.0f, 0.0f, 1.0f);
 }