;;; Copyright (C) 2012, 2013, 2015, 2021, 2022 Thien-Thi Nguyen
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- 0.6.1 | 2022-02-20

  - changes to ‘(sdl misc-utils)’

    - new proc: ‘create-rgba-surface’

      This returns a new 32bpp surface of the specified width and
      height w/ the ‘src-alpha’ flag set.

    - new proc: ‘create-rgba-square’

      This returns a new 32bpp square surface of the specified edge
      length w/ the ‘src-alpha’ flag set.

    - ‘rotate-square’ fixed / extended

      Previously, this proc made reference to ‘roto-zoom-surface’ in
      the wrong module.  This undefined reference was never detected,
      showing how middlig to poor the test coverage was (and remains).
      Now, ‘roto-zoom-surface’ is properly imported from ‘(sdl gfx)’.

      Another oddity is that previously, the specified ANGLE argument
      was subtracted by 90 prior to passing it to ‘roto-zoom-surface’.
      This bizarre practice is no more.

      Re extension, ‘rotate-square’ now takes optional 3rd arg
      MKSQUARE which specifies a procedure to make a new square
      surface.  If omitted, it defaults to ‘create-rgba-square’.

      Additionally, if the rotated surface has flag ‘src-alpha’ set,
      the resizing blit uses ‘(sdl gfx) blit-rgba’ to do the job
      (otherwise ‘(sdl sdl) blit-surface’, as before).

  - bootstrap/maintenance tools

    upgraded:

     (none)

    as before:

     Guile-BAUX 20211208.0839.a5245e7
     GNU gnulib 2022-01-27 07:00:41
     GNU Libtool 2.4.6
     GNU Autoconf 2.71
     GNU Automake 1.16.5
     GNU Texinfo 6.8


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