Subject: CVS commit: pkgsrc/emulators/dosbox-x
From: Nia Alarie
Date: 2022-03-04 08:41:15
Message id:

Log Message:
dosbox-x: update to 0.83.23

  - Fixed XGA accelerated rendering for ViRGE emulation
    and 24 bits/pixel display modes. Since Windows drivers
    insist on 24bpp, this is necessary for
    "Truecolor (24-bit)" to display and render correctly.
  - dosbox.conf option "vesa vbe 1.2 modes are 32bpp" is
    now "true" "false" or "auto", where \ 
"auto" determines
    this setting based on which S3 chipset is being
    emulated. It seems the Windows drivers for ViRGE
    chipsets require 24bpp for truecolor modes, in fact,
    they do not even offer 32bpp as an option. Since
    the Windows 3.1/95/98 drivers use VESA BIOS calls to
    set video modes, this implies that the VESA BIOS on
    ViRGE cards are also making the base modes 24bpp rather
    than 32bpp. Note that the Windows drivers for older S3
    chipsets are perfectly happy to use 32bpp unless you
    select "16.7 million colors (1 Meg)" in Windows 3.1,
    which is the only option in those drivers to offer
    24bpp. To avoid grief with DOSBox-X users, "auto"
    is the default setting.
  - Added basic S3 ViRGE XGA acceleration. It's enough for
    90% of the GDI functions in Windows 3.1 so far.
  - Fixed S3 rectangle XGA accelerated pattern blit, when
    using display memory as the pattern mask source, to
    follow S3 Trio32/Trio64 documentation, instead of the
    DOSBox SVN educated guess, to resolve some edge cases
    where the wrong color is chosen to draw filled rectangles
    in Windows 3.1. This fixes the "basement" in Microsoft
    Creative Writer so that clicking around no longer leaves
    white boxes on the screen.
  - Extend 256-color foreground/background color behavior
    from S3 86c928 to Vision864 and Vision868 as Windows
    95 behavior suggests they handle the hardware cursor
    the same way in 256-color mode.
  - Extend "divide cursor X position by bytes per pixel"
    behavior from S3 86c928 to Vision864 and Vision868
    emulation as well, based on Windows 3.1 video driver
  - Gravis Ultrasound: Most I/O registers except port 3x4
    are intended for 8-bit I/O. If 16-bit I/O occurs to
    such registers, handle as two 8-bit I/O cycles. I
    found something in the Demoscene (1997 demo "Atlantis,
    Deep Like A Sea") that uses a 16-bit I/O write to write
    current channel and register select in one write.
    Prior to this fix, there was no music other than quiet
    popping noises in DOSBox-X.
  - Sound Blaster: Fixed DSP command 0x48 (Set DSP block
    transfer size) to accept block size as BYTES as
    standardized by Creative and convert to SAMPLES
    internally. This fixes stuttering voices in Freddy
    Pharkas when sbtype=sb16. (joncampbell123)
  - Avoid crashes due to assertion failure when media
    keys are pressed (maron2000)
  - Fix CD audio playback failure (cue + mp3) when
    trying to play from pregap sectors. (maron2000)
  - Change default value of mt32.rate to 48kHz to match
    default value of mt32.analog option. (maron2000)
  - Fix a buffer overflow issue in dos.cpp (maron2000)