[RELEASE] u22-v03

This version is submitted to U22 breau.

core/loshader/hud_bar.fshader

@@ -0,0 +1,21 @@
+in vec2 v_pos;
+in vec2 v_size;
+in vec2 v_aa;
+in vec2 v_dp;
+in vec4 v_color;
+
+out vec4 o_color;
+
+void main() {
+  vec2 dp  = v_dp;
+  dp      *= pow(length(dp), .1);
+
+  vec2 diff = abs(dp - v_pos);
+  float aa = uni.aa * 4.;
+  float a =
+      (1.-smoothstep(v_size.x-aa, v_size.x, diff.x)) *
+      (1.-smoothstep(v_size.y-aa, v_size.y, diff.y));
+
+  o_color    = v_color;
+  o_color.a *= a;
+}