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authorTim Redfern <tim@getdrop.com>2018-02-02 01:47:51 +0000
committerTim Redfern <tim@getdrop.com>2018-02-02 01:47:51 +0000
commit7c50a03c5857310aa383b1ba89a18792c96724b1 (patch)
tree97727831c97af5c06b39064dfdba60d61f7c7ae3 /warper/bin/data/shaders/ofxWarp/ControlPoint.frag
parent2b6c19dd192b07fe5980f667e26015da51c3106d (diff)
lots
Diffstat (limited to 'warper/bin/data/shaders/ofxWarp/ControlPoint.frag')
-rw-r--r--warper/bin/data/shaders/ofxWarp/ControlPoint.frag16
1 files changed, 16 insertions, 0 deletions
diff --git a/warper/bin/data/shaders/ofxWarp/ControlPoint.frag b/warper/bin/data/shaders/ofxWarp/ControlPoint.frag
new file mode 100644
index 0000000..87ef7a3
--- /dev/null
+++ b/warper/bin/data/shaders/ofxWarp/ControlPoint.frag
@@ -0,0 +1,16 @@
+#version 150
+
+in vec2 vTexCoord;
+in vec4 vColor;
+
+out vec4 fragColor;
+
+void main(void)
+{
+ vec2 uv = vTexCoord * 2.0 - 1.0;
+ float d = dot(uv, uv);
+ float rim = smoothstep(0.7, 0.8, d);
+ rim += smoothstep(0.3, 0.4, d) - smoothstep(0.5, 0.6, d);
+ rim += smoothstep(0.1, 0.0, d);
+ fragColor = mix(vec4( 0.0, 0.0, 0.0, 0.25), vColor, rim);
+}