From 37a1a122e5967d23febbb2c18924af4dc18c233a Mon Sep 17 00:00:00 2001
From: falsycat <me@falsy.cat>
Date: Tue, 8 Oct 2019 00:00:00 +0000
Subject: [PATCH] [fix] Fixed an issue that Actor wasn't drawn.

---
 sjplayer/src/sjplayer/Actor.d | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/sjplayer/src/sjplayer/Actor.d b/sjplayer/src/sjplayer/Actor.d
index 6862f5b..2bdf5dd 100644
--- a/sjplayer/src/sjplayer/Actor.d
+++ b/sjplayer/src/sjplayer/Actor.d
@@ -56,15 +56,17 @@ class ActorProgram {
 
     out vec4 pixel_;
 
-    float line(float ux, float px, float a) {
+    float line(float u, float p, float a) {
       return
-        (1 - smoothstep(0, 0.003, abs(ux - px)));
+        (1-smoothstep(0, 0.003, abs(u-p)));
     }
 
     void main() {
+      float alpha =
+        line(uv_.x, pos.x, accel.x) +
+        line(uv_.y, pos.y, accel.y);
       pixel_    = color;
-      pixel_.a *=
-        clamp(0, 1, line(uv_.y, pos.y, accel.y) + line(uv_.x, pos.x, accel.x));
+      pixel_.a *= clamp(alpha, 0, 1);
     }
   };