libretro / libretro-vecx

Port of Vecx to the libretro API.

vecx

Compiling

for libretro build, make sure to set -DCMAKE_BUILD_TYPE=Libretro

Requirements

(for standalone port)

• libsdl
• sdl_gfx
• sdl_image

Authors

• Valavan Manohararajah - original author
• "Demeth" - libretro port
• dave j - OpenGL rendering
• Rupert Carmichael - Audio

libretro-vecx's Issues

platform detection breaks on linux if hostname contains "win"

This affects a bunch of cores due to makefile code like

ifeq ($(platform),)
platform = unix
ifeq ($(shell uname -a),)
   platform = win
else ifneq ($(findstring MINGW,$(shell uname -a)),)
   platform = win
else ifneq ($(findstring Darwin,$(shell uname -a)),)
   platform = osx
   arch = intel
ifeq ($(shell uname -p),powerpc)
   arch = ppc
endif
else ifneq ($(findstring win,$(shell uname -a)),)
   platform = win
endif
endif

if the hostname on a linux system contains the word win at all, the detection will fail. I suspect using something like uname -s would be more appropriate for matching against MINGW or win.

[Bug] Berzerk sound bug

there a constant buzzing/noise on Berzerk with this core tried the game on mame and it doesnt have this issue so its not a normal thing in the game

[BUG] Output flipped vertically on Android (GLES?)

I've seen some users report that the image is flipped vertically on Android, presumably related to the recent OpenGL renderer addition:
https://www.reddit.com/r/RetroArch/comments/k39f3w/vectrex_game_seems_invertedflipped/

build fails on Ubuntu MATE for Raspberry Pi

Compile fails with

root@uberpi:/home/pi/RetroPie-Setup/tmp/build/lr-vecx# make
cc -o vecx_libretro.so -fPIC -shared -Wl,--version-script=link.T -Wl,--no-undefined ./e6809.o ./e8910.o ./libretro.o ./vecx.o ./libretro-common/glsym/rglgen.o ./libretro-common/glsym/glsym_es2.o -lm  -L/opt/vc/lib -lbrcmGLESv2 -lbcm_host -lpthread
/usr/bin/ld: cannot find -lbrcmGLESv2
collect2: error: ld returned 1 exit status
make: *** [Makefile.libretro:715: vecx_libretro.so] Error 1

Reason being this is Ubuntu Mate on Raspberry Pi, not raspbian.

root@uberpi:/home/pi/RetroPie-Setup/tmp/build/lr-vecx# uname -a
Linux uberpi 5.4.0-1019-raspi #21-Ubuntu SMP PREEMPT Mon Sep 14 07:20:34 UTC 2020 aarch64 aarch64 aarch64 GNU/Linux
root@uberpi:/home/pi/RetroPie-Setup/tmp/build/lr-vecx# cat /etc/issue
Ubuntu 20.04.1 LTS \n \l

Adding a platform detect for Ubuntu is enough to make it build

ifeq ($(platform),)
   platform = unix
   ifeq ($(shell uname -a),)
      platform = win
   else ifneq ($(findstring Ubuntu,$(shell uname -a)),)
      platform = unix
   else ifneq ($(findstring pi,$(shell uname -a)),)
      platform = pi

---

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[Feature Request] Core for Wii

Hi there, just wondering why this core is not available on Retroarch for Wii. Any chance it could be made to work on the Wii? Thanks.

Black screen on some games

Hi!
I tried different roms, but games like 3D crazy coaster, 3D Minestorm and 3D Narrow Escape doesn't works. The games start (I can see the Vectrex intro), but after the screen remains black.
Any suggestion?
Thx a lot

---

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conversion uint8 to int16 wrong

wrong: short convs = (buffer[i] << 8) - 0x7ff;
right: int16_t convs = (buffer[i]-128) <<8;
(near the end of libretro.c)

---

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Misaligned Output Screen

I've been trying to set up the Vectrex overlays recently and noticed that they don't seem to line up at all. As far as I can tell the overlays themselves are the correct aspect ratio, but no matter the amount of fudging, it doesn't seem possible to make the two line up. The main problem appears to be the screen itself is too far down. Here are two examples of the current state:

Overlay scale 1:

Overlay scale 0.90:

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No music or voice in Spike

The sound effects work, but after the initial introduction tune, there's no music during gameplay. Also, none of the voice samples work.

---

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[feature request] Increase internal res

I played around with this some but never got it to work quite right, so I figured I'd post about it here.

If you increase the width, height and bufsz, you can get a higher internal resolution, which makes for smoother lines but it also messes up the "stride" or whatever (that is, it makes the lines diagonal and they point off the screen).

---

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Only Mine Storm runs (built in game)

751724b breaks something so that only the built in game Mine Storm is now running no matter what rom is given.

Bisected to

751724b75f2b9ed4f82a8b1d0b873355770bb855 is the first bad commit
commit 751724b75f2b9ed4f82a8b1d0b873355770bb855
Author: xperia64 <[email protected]>
Date:   Mon Jul 18 19:27:12 2016 -0400

    Cherrypick bankswitching from https://github.com/OpenEmu/VecXGL-Core/pull/1

VecX 1.2 Sound problems

Hi, I'm new here. I use RetroPie + RetroArch 1.7.5 with VecX 1.2 (fb70263). I like the Vectrex emulator very well, but have strong sound problems. Can you fix that? Best regards, MiC

(Raspberry Pi 3B +)

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Why the weird point shape?

I noticed that points on the screen were weirdly triangular, and then looked at the code. At resolution multipliers 2 and 3 which have a point size of 2, the points drawn have this shape:

XXX
XX.
X..

and at multiplier 4 which has the point size of 3, they have the shape:

XXXX
XXX.
XX..
X...

Is there a reason why they have these weird shapes? It seems to me that this will result in lines (which are currently drawn with points) having rather different thickness depending on their slope, and the points that text (e.g., scores) are drawn with look weird being made of little triangles. It seems to me that it would look better to use shapes like:
Size 2 (multipliers 2-3):

.X.
XXX
.X.

Size 3 (multiplier 4):

.XX.
XXXX
XXXX
.XX.

Missing license file

Missing license file in the source, there is no tip in the files headers too.