Add bicubic texture table, as well as the script used to (re)generate it. To regenerate, just run "python bicubic_table.py > bicubic_table.h".

1 files changed, 38 insertions, 0 deletions

diff --git a/src/bicubic_table.py b/src/bicubic_table.py
new file mode 100755
index 00000000..45101173
--- /dev/null
+++ b/src/bicubic_table.py
@@ -0,0 +1,38 @@
+#!/usr/bin/python
+
+def texgen():
+
+ tex = []
+
+ for i in range(0,512,4):
+
+  a = i / 512.0
+  a2 = a ** 2
+  a3 = a ** 3
+
+  w0 = 1 / 6.0 * (-a3 + 3 * a2 + -3 * a + 1)
+  w1 = 1 / 6.0 * (3 * a3 + -6 * a2 + 4)
+  w2 = 1 / 6.0 * (-3 * a3 + 3 * a2 + 3 * a + 1)
+  w3 = 1 / 6.0 * a3
+
+  tex.append(1 - (w1 / (w0 + w1)) + a)
+  tex.append(1 + (w3 / (w2 + w3)) - a)
+  tex.append(w0 + w1)
+  tex.append(w2 + w3)
+
+ return tex
+
+def printrow(l, offset):
+
+ seq = [ str(i) for i in l[offset:offset+4] ]
+ return "\t" + ", ".join(seq) + ","
+
+l = texgen()
+
+print "const float[] bicubic_tex = {"
+
+for i in range(0, 512, 4):
+
+ print printrow(l, i)
+
+print "\tNULL }"