From 50c75c12597b230cec4d7a29559cde263025eeb2 Mon Sep 17 00:00:00 2001
From: Takamichi Horikawa <takamichiho@gmail.com>
Date: Fri, 8 Sep 2017 23:25:51 +0900
Subject: pacc: initial

---
 pacc/glsl/key.frag | 12 ++++++++++++
 1 file changed, 12 insertions(+)
 create mode 100644 pacc/glsl/key.frag

(limited to 'pacc/glsl/key.frag')

diff --git a/pacc/glsl/key.frag b/pacc/glsl/key.frag
new file mode 100644
index 0000000..d6bf7e1
--- /dev/null
+++ b/pacc/glsl/key.frag
@@ -0,0 +1,12 @@
+uniform sampler2D palette;
+uniform sampler2D tex;
+varying mediump vec2 texcoord;
+uniform lowp float key;
+uniform lowp float color;
+void main(void) {
+  lowp float index = texture2D(tex, texcoord).x;
+  if (index < (key + (0.5/255.0)) || (key + (1.5/255.0)) < index) {
+    discard;
+  }
+  gl_FragColor = texture2D(palette, vec2(color, 0.0));
+}
-- 
cgit v1.2.3