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--- guides:gpu [2024/07/13 10:38] – Add (placeholder) function usage documentation admin
+++ guides:gpu [2024/07/16 20:20] (current) – Add time, remove TODO b/c it works admin
@@ Line 44: / Line 44: @@
     return a + b*cos( 6.28318*(c*t+d) );
 }}
-##### TODO:::: Test this out on a real Folk system
 Wish the GPU compiles pipeline "$this's triangle" {
-    {vec2 p0 vec2 p1 vec2 p2} {
+    {vec2 p0 vec2 p1 vec2 p2 float u_time} {
         vec2 vertices[4] = vec2[4](p0, p1, p2, p0);
         return vertices[gl_VertexIndex];
     } {fn palette} {
-        vec3 gradientColor = palette(gl_FragCoord.x, vec3(0.5,0.5,0.5),vec3(0.5,0.5,0.5),vec3(1.0,1.0,1.0),vec3(0.0,0.10,0.20));
+        vec3 gradientColor = palette(gl_FragCoord.x, vec3(0.5,0.5,0.5),vec3(sin(u_time),0.5,0.5),vec3(1.0,1.0,1.0),vec3(0.0,sin(u_time),0.20));
         return vec4(gradientColor, 1.0);
     }
@@ Line 56: / Line 56: @@
 Wish $this is outlined blue
-When $this has region /r/ {
+When $this has region /r/ & the clock time is /t/ {
     set r' [region move $r down 100%]
-    Wish the GPU draws pipeline "$this's triangle" with arguments [list {*}[lrange [region vertices ${r'}] 0 2]]
+    Wish the GPU draws pipeline "$this's triangle" with arguments [list {*}[lrange [region vertices ${r'}] 0 2] [fmod $t 16384]]
-}
+}</code>
-</code>