oriel pattern

app/dofs/oriel/⧉.txt

@@ -0,0 +1,56 @@
+# 2019.03.14 -> 2022.10.06 ->
+
+# deprecated format
+# // spatial culling shader code
+# 
+# _matrix   = Matrix.TR(oriel.pos, oriel.rot)
+# _dim      = oriel.dimensions
+# MAX_STEPS = 256±
+# MAX_DIST  = 100±
+# 
+# BoxSD(pos, dim):
+#   q     = abs(pos) - dim
+#   step  = length(max(q, 0.0))
+#   step += min(max(q.x, max(q.y, q.z)), 0.0)
+# 
+#   return step
+# 
+# 
+# Raymarch(origin, dir):
+#   origin = mul(origin, _matrix)
+#   dir    = mul(dir,    _matrix)
+#   dist   = 0.0
+#   for (0..MAX_STEPS):
+#     pos  = origin + dist * dir
+#     step = BoxSD(pos, _dim / 2.0)
+#     if (step < 0.0001 or dist > MAX_DIST):
+#       then break loop
+#     dist += step
+#   
+#   return dist
+# 
+# 
+# YourPixelShader():
+#   pos = pixel.worldposition
+#   dir = normalize(pos - cam)
+#   
+#   // cull around
+#   dist = Raymarch(cam, dir) 
+#   clip(100 - (dist + 1))
+#   
+#   // cull between
+#   oriel = cam + dist * dir
+#   clip(dist(cam, pos) - dist(cam, oriel))
+#   
+#   ...
+# 
+# 
+
+# new format *TODO
+input
+
+data
+
+frame
+
+design