try fix x11 screens

src/shaders/mod.rs

@@ -80,6 +80,26 @@ pub mod frag_sprite {
     }
 }
 
+pub mod frag_screen {
+    vulkano_shaders::shader! {
+        ty: "fragment",
+        src: r"#version 310 es
+            precision highp float;
+
+            layout (location = 0) in vec2 in_uv;
+            layout (location = 0) out vec4 out_color;
+
+            layout (set = 0, binding = 0) uniform sampler2D in_texture;
+
+            void main()
+            {
+                out_color = texture(in_texture, in_uv);
+                out_color.a = 1.0;
+            }
+        ",
+    }
+}
+
 pub mod frag_srgb {
     vulkano_shaders::shader! {
         ty: "fragment",