Questions tagged [graphics]

For questions regarding graphical - as opposed to text - processing and display.

Filter by
Sorted by
Tagged with
3 votes
1 answer
210 views

DPI resolution of Epson MX-80 vs IBM graphics printer 5152 different in quadruple density mode?

I have been trying to figure out why the IBM graphics printer has a higher dpi in quadruple density , than the Epson MX-80 since technically the IBM graphics printer is a rebranded version of the MX-...
4 votes
3 answers
601 views

How was "clipping/culling" of graphics with the screen edges handled efficiently on PC demoscenes (scrollers in particular?)

What'd especially piqued my interest with respect to demoscene scrollers was how they had implemented asset clipping (as in the culling of assets once they 'move' past screen edges/boundaries) An ...
  • 141
5 votes
1 answer
259 views

Why can't the VIC-II handle ECM and Multicolor at once?

On the Commodore 64 there are a few different graphical mode selection bits we can enable. This question is about three of them: Multicolor mode (hereinafter MCM), where pixels are joined pairwise ...
6 votes
1 answer
313 views

Best 4-color palette for dithering arbitrary images [closed]

While 8 or 16 colors can offer a relatively satisfying result of dithering, 4 color palette results varies. Below are some acceptable results. BBC micro mode 2 8 colors NES 4 color full screen CGA ...
  • 3,582
6 votes
2 answers
2k views

Why do most of my games have graphics errors on my Windows ME retro PC?

I've built a retro PC with Windows ME, a GeForce 2 MX 400 (drivers installed) and DirectX 8.1. But it seems many of the games have graphics errors. In most cases these are black areas. (See ...
  • 3,529
7 votes
1 answer
357 views

Origin of PALMPC.ZIP "Palm PC emulator"

The program PALMPC.COM, which is available on an old link in the Internet Archive, and also on e.g. S.U.P.E.R., apparently provides graphics emulation, including interrupt 0x5F used by the HP/Lotus ...
  • 1,942
3 votes
4 answers
2k views

What did game programmers and journalists mean by a "hardware trick"? [closed]

Recently, I've been hearing a good deal about hardware tricks. For instance, the YouTuber Ahoy (see A Brief History of Graphics) mentions that some game programmers resorted to "hardware tricks&...
10 votes
1 answer
339 views

What is the timeline of vertical cursor usage?

As there have been some questions about vertical cursors: What is the timeline of vertical cursor usage? This includes anything that is positioned between characters. It doesn't have to be a vertical ...
  • 24k
3 votes
1 answer
225 views

How to change graphics modes from BASIC on a Timex/Sinclair 2068?

I've got the Timex/Sinclair 2068 emulation working under MAME and wanted to play with its extra graphics modes the original version of the Sinclair ZX Spectrum didn't have. But despite an hour of ...
  • 5,966
7 votes
1 answer
340 views

Software that emulated VGA high res mode on an EGA board

I have this very faint recollection from my late elementary school days back in the end of 1980s of a very specific piece of MS-DOS software that claimed to do what was an incredible thing to an ...
  • 349
14 votes
2 answers
1k views

What is the size of the border of the ZX Spectrum in scanlines/pixels/bytes?

The bitmap area of the Sinclair ZX Spectrum is exactly 256 x 192 pixels. Surrounding the bitmap is quite a wide border area which is generally just one colour but loading and saving from tape changes ...
  • 5,966
13 votes
2 answers
3k views

Why does OpenGL use counterclockwise order to determine a triangle's front face by default?

OpenGL by default determines a triangle to be facing towards the camera if the triangle's vertexes are ordered in a counterclockwise order from the perspective of the camera. This seems to have been ...
  • 233
10 votes
2 answers
840 views

Information about the Hollywood Hardware Graphics Card for Apple II+

I still have a Hollywood Hardware graphics card that I used in my Apple II+ back-in-the-day. It was my understanding that this was the graphics card used for the special effects in the first three ...
10 votes
1 answer
1k views

What was the first games console to be as powerful as the Sega Model 2 board? [closed]

Back in the day, Sega's Daytona USA was the king of arcades. All those polygons flying around at 60 frames per second, it was incredible. It was also hugely expensive. What was the first games console ...
1 vote
0 answers
154 views

DirectX 8 Win32 GUI Not Appearing/Flickering While Running [closed]

I am programming a game with DirectX 8, and I am trying to use the GUI options that are provided by the Win32 window that I am using. However, when I try to render a button or, in this case, a textbox ...
0 votes
2 answers
397 views

How do programmers take advantage of programming languages to make graphics? [closed]

I was wondering for a pretty long time about graphics in all programming languages(no code available). Back in the rise of programming languages, such as C, Assembly, C++, and others, they had no ...
  • 29
6 votes
0 answers
212 views

Atari ST image viewer with unusual zoom

I'm looking for info on an Atari ST (16-color) full-screen image viewer that I once used. When zooming in the edges between colors were smoothly curved (instead of e.g. no smoothing or interpolation ...
  • 9,200
3 votes
1 answer
171 views

In DirectX 8, how can I have a texture cover another texture only partially? [closed]

I am creating a Real Time Strategy game with DirectX 8. However, DirectX 8 supports pixel shaders only minimally. Is there a way that I can change the colors of individual triangles before the mesh is ...
13 votes
7 answers
5k views

Could some 200 line displays have been pushed to 240 lines?

Reviewing Raffzahn's answer about CGA emulators for Hercules displays, and especially his initial (now corrected) note about 720x350 being PAL's natural resolution, I was wondering if 200/400 line ...
  • 947
64 votes
1 answer
7k views

How did the SNES do the “pixelate” transition effect?

This effect is seen in many SNES games, including Super Mario World. The effect pixelates the screen, and makes the pixels larger, then smaller again when it switches to another scene. It is done so ...
7 votes
1 answer
507 views

What is the TPG file format used in the PlayStation release of Zork I?

I'm looking at the Japanese releases of Infocom games, curious to understand how the engine works. Four games were released for the PC98, one of which added graphics for the rooms (Moonmist). Later, ...
11 votes
2 answers
430 views

Which plotter used these commands?

I've found a BESM-6 binary of a Pascal program which plots pretty pseudo-random pictures, like this A date is given as the seed for the RNG, in a "horoscope"-like fashion. After decompiling,...
  • 17.7k
8 votes
1 answer
551 views

Is "scroll tearing" a symptom of scanline interrupts taking too long?

I was trying to implement multiple LYC IRQs to implement faux parallax effects (like in Game Gear Shinobi), and my method was to begin LYC interrupts at a particular scanline, say about halfway down ...
  • 1,566
16 votes
1 answer
440 views

What happened to IntelliFont (i.e. Amiga vector fonts)?

One of the oft maligned weaknesses of AmigaOS 1.x was that the included bitmap fonts were not very good, especially when compared to those included with Classic Mac OS. Commodore closed this gap with ...
  • 59.1k
18 votes
2 answers
2k views

Who considered multimedia capability a liability for a business computers, and why?

For technical reasons, business computers of the late '70s usually had little multimedia capability. There have been modern claims (e.g., in the comments on this video) that such capability was ...
  • 55k
1 vote
1 answer
288 views

Can the window only be moved once per frame on the Game Boy?

I wanted to cover the top part of the screen to use as a status bar for a game. My idea was to use the Game Boy's window feature to do so. But I ran into a problem: The window's size is fixed to be ...
  • 1,566
32 votes
1 answer
7k views

Did John Carmack really invent "Adaptive Tile Refresh"?

John Carmack is credited with making fast-paced arcade games like Commander Keen possible on an IBM-PC that had no specialized graphics controllers suited for those, thanks to the "Adaptive Tile ...
  • 1,069
1 vote
0 answers
107 views

Getting a loading seam to work with 2x2 metatiles

I'm working on a prototype for a scrolling loading seam similar to Pokemon where the screen scrolls incrementally by 8 pixels with each direction button press, and new tile graphics are drawn off the ...
  • 1,566
24 votes
11 answers
11k views

Why weren't 80s arcade games programmed in C?

I know many arcade games from the 80s were programmed in 68000 assembly. This carried on probably well into the 90s, even though Motorola C compilers existed in the 80s. Why then weren't C compilers ...
  • 341
9 votes
1 answer
519 views

Usage of Windows default 20-color palette

Currently I'm digging in the history of computer graphics and found the Windows default 20-color palette. It's based on the Windows and IBM OS/2 default 16-color palette but has the four additional ...
  • 651
5 votes
1 answer
420 views

What kind of graphics hardware did Nichibutsu's 1985 arcade game "MagMax" use?

The arcade game MagMax by Nichibutsu came out in 1985 and features for its time an impressive 3D scrolling effect which, in my observation, is not widely discussed yet, although it should be ...
  • 1,069
26 votes
7 answers
5k views

How did DOS games manage to have multiple background layers?

Seems like VGA only has one background layer, it appears to be a typical bitmap screen like most home computers of the 80s (Amstrad CPC, Commodore 64 etc.) where each pixel's color is stored in a ...
  • 1,566
8 votes
1 answer
457 views

BBC Micro split mixed graphics modes, could Mode 7 teletext be mixed with them?

The Elite computer game was one example of different graphics modes being on the screen at once: Mode 4 (monochrome, 320x256) for the main wireframed vector graphics game play and Mode 5 (4 colour ...
16 votes
1 answer
3k views

Windows 3.1 Hardware acceleration API

As far as I know, there were many video cards which offered 2D acceleration (tasks like line drawing, colorfill, bitblit etc.) on Windows as early as Windows 3.1. Did they have any sort of ...
27 votes
2 answers
4k views

What operations could early PC 3D accelerators perform?

As I understand it, a modern GPU is actually just a Turing-complete processor which happens to be heavily optimised for massively data-parallel workloads. (You can even buy "graphics cards" ...
6 votes
3 answers
314 views

How were "catalog" picture files created? [closed]

Back in the 1990s there were CD-ROMs containing a large collection of pictures split across several folders, where each folder would have a "catalog" file at the top. This file was basically ...
  • 130
29 votes
5 answers
8k views

Why did old IBM-PC-compatible computers only have 16 colors available?

In the MS-DOS Editor, the only choices for colors were a collection of 16 colors: That's 16 colors: Black Blue Green Cyan Red Magenta Brown White Gray Bright Blue Bright Green Bright Cyan Bright Red ...
5 votes
3 answers
751 views

Performance characteristics of the DEC Type 30 graphical display

The DEC Type 30 was an early vector graphics display, that was used for an astonishingly wide range of applications for the 1960s. It used a 16-inch circular CRT with high persistence phosphor ...
  • 55k
1 vote
0 answers
67 views

PowerAnimator System Requirements?

I was curious: what was the cheapest/wimpiest computer you could run PowerAnimator back in the day on? My guess would be a base model SGI Indy.
  • 111
7 votes
1 answer
274 views

Was there an Evans & Sutherland display system capable of rendering ordinary data as motion through a landscape?

Around 1987, the investment bank I worked for had a high-end graphics device, possibly from Evans & Sutherland, which produced an "animated" display not unlike the view from the front ...
4 votes
1 answer
261 views

Apple IIc : displaying HGR page 1 in AUX memory

I need to display HGR page 1 ($2000 to $3FFF) located in AUX memory (not in MAIN memory). According to the "Apple IIc Reference Manual - Volume 1", page 45, I must first turn 80Store on by ...
  • 173
29 votes
6 answers
7k views

Was there a specific benefit to inverted (XOR) mouse cursors other than aesthetics?

As far as I can remember the inverted (aka "XOR") style of mouse cursor has been around as long as there have been mice. I mean something like this: (source) where the cursor shape is ...
  • 3,806
11 votes
10 answers
3k views

Hardware assisted Graphical User Interface?

I have read a fiction novel in which a manufacturer in the 80s provided GUI by adding a dedicated drawing hardware besides videocard or by extending videocard. Fictional as it is, is this possible or ...
  • 3,582
14 votes
1 answer
701 views

Where did the # (hash, number sign) notation for hexadecimal RGB colour triples originate?

The hexadecimal notation #RRGGBB for RGB colour triples has been popularised by HTML and is commonly associated with it, even though nowadays it is not usually used in HTML directly, but rather ...
  • 20.3k
5 votes
1 answer
291 views

Multi-GPU PowerMac G5?

I’ve got a 2005 PowerMac G5, Dual 2.3 GHz with a stock Nvidia GeForce 6600 running OSX 10.4 Tiger that I enjoy experimenting with, purely for fun and to learn writing legacy software in XCode. Would ...
6 votes
2 answers
1k views

How 3Dfx Voodoo 1 Emulator works

reading of this question brings up 3Dfx Voodoo 1 Emulator in my memories. I always wandered how did it work so good time as any to ask... My memory is hazy on the details so I might miss remember ...
  • 7,046
10 votes
1 answer
1k views

How did the Rush 3D engine in Crazy Taxi: Catch a Ride work?

In an interview with the developers of the Crazy Taxi game for the GBA, they mention that they were able to achieve 3D graphics with a pure-software 3D rendering engine that they called Rush: It is a ...
  • 1,939
5 votes
1 answer
304 views

Did the Power Macintosh 8500 have accelerated blitting?

Looking at online specifications for the Power Macintosh 8500, I was able to find few details on its graphics capabilities beyond quantity of VRAM and supported color depths, refresh rates, and ...
  • 153
5 votes
2 answers
814 views

NEC PC-88 video mode and resolution in games

I learnt that there are 4 video modes as described on wiki. I came across many games for the PC-88, like Thexder (1985), which are in the aspect ratio of 4:3 and in more than 2 colors. I don't ...
  • 53
5 votes
1 answer
427 views

Did the Tiger Game.Com include any hardware accelerated graphics?

I stumbled upon screenshots of the Tiger Game.Com handheld running its Resident Evil 2 port and I'm curious to know what its graphical capabilities actually are: (from: https://twitter.com/_Kimimi/...