src/glsl/builtins/tools/generate_transposeGLSL.py

   1 #!/usr/bin/python
   2
   3 def gen(x, y):
   4     origtype = "mat" + str(x)
   5     trantype = "mat" + str(y)
   6     if x != y:
   7         origtype = origtype + "x" + str(y)
   8         trantype = trantype + "x" + str(x)
   9     print trantype + " transpose(" + origtype + " m)\n{"
  10     print "    " + trantype + " t;"
  11
  12     # The obvious implementation of transpose
  13     for i in range(x):
  14         for j in range(y):
  15             print "    t[" + str(j) + "][" + str(i) + "] =",
  16             print "m[" + str(i) + "][" + str(j) + "];"
  17     print "    return t;\n}"
  18
  19 print "#version 120"
  20 gen(2,2)
  21 gen(2,3) # mat2x3 means 2 columns, 3 rows
  22 gen(2,4)
  23 gen(3,2)
  24 gen(3,3)
  25 gen(3,4)
  26 gen(4,2)
  27 gen(4,3)
  28 gen(4,4)