[RELEASE] u22-v03

This version is submitted to U22 breau.

core/loshader/hud_text.fshader

@@ -0,0 +1,28 @@
+layout (location = 0) uniform sampler2D u_tex;
+layout (location = 1) uniform float     u_alpha;
+
+in vec2  v_pos;
+in vec2  v_size;
+in vec2  v_uv_pos;
+in vec2  v_uv_size;
+in vec2  v_dp;
+in vec4  v_color;
+
+out vec4 o_color;
+
+void main(void) {
+  vec2 dp = v_dp;
+  dp     *= pow(length(dp), .1);
+
+  vec2 uvp = (dp - v_pos) / v_size;
+  vec2 uv  = uvp*v_uv_size + v_uv_pos;
+  uvp = abs(uvp);
+
+  float a =
+      texture(u_tex, uv).r *
+      step(abs(uvp.x-.5), .5) *
+      step(abs(uvp.y-.5), .5);
+
+  o_color    = v_color;
+  o_color.a *= a*u_alpha;
+}