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  1. This document open in two windows of TEdit, the WYSIWYG editor of Medley Interlisp, shows a gallery of bitmaps available for Lisp applications and tools.

  2. This document open in two windows of TEdit, the WYSIWYG editor of Medley Interlisp, shows a gallery of bitmaps available for Lisp applications and tools.

    #bitmap #interlisp #lisp #retrocomputing

  3. I created a tool in #godot to create #bitmap #fonts. It was a helper tool for #waddlewords. And I liked it that much that I also decided to publish it on #itch.

    dunkelgrau.itch.io/bitmap-font

  4. I created a tool in #godot to create #bitmap #fonts. It was a helper tool for #waddlewords. And I liked it that much that I also decided to publish it on #itch.

    dunkelgrau.itch.io/bitmap-font

  5. Глубокий разбор материализованных представлений в StarRocks: полный механизм query rewrite

    Материализованные представления (MV) в StarRocks — это не просто кэш агрегатов, а полноценный механизм ускорения запросов с автоматическим переписыванием (query rewrite). На практических примерах разбираем, как движок сопоставляет поддеревья плана запроса со SPJG‑MV, как работают join/aggregate/nested/union rewrite, как обеспечивается строгая согласованность и настраиваемая устарелость данных (staleness), и за счёт чего достигается ускорение на SSB и TPC‑H.

    habr.com/ru/articles/980320/

    #StarRocks #материализованные_представления #query_rewrite #SPJG #OLAP #BI #rollup #bitmap #predicate_pushdown #partition_pruning

  6. Re-reading old code and I’m reminded of this old trick for doing bit-manipulation:

    I was trying to shift right an u8 by a value between 1 and 8 bits:

    myu8 >> (8 - shift)

    If shift equals 0, this would be an 8 bits shift, I wanted the result to be zero (all bits shifted), but that's not how (some) CPUs work; so it's undefined behaviour, and in Rust, the compiler will throw a compile error (if it's a const shift), or panic at runtime in debug mode.

    One could test if shift is 8, and adjust code accordingly, but this adds branches and even more code.

    So the trick to work around that is simply... to shift twice ! One time for the first bit, and another for the last (potential 7):

    (myu8 >> 1) >> (8 - shift - 1)

    And that's how one can do this operation fully branchless.

    (another version of this post appeared on a now-defunct instance)

    #RustLang #bitmap #BitManip

  7. Re-reading old code and I’m reminded of this old trick for doing bit-manipulation:

    I was trying to shift right an u8 by a value between 1 and 8 bits:

    myu8 >> (8 - shift)

    If shift equals 0, this would be an 8 bits shift, I wanted the result to be zero (all bits shifted), but that's not how (some) CPUs work; so it's undefined behaviour, and in Rust, the compiler will throw a compile error (if it's a const shift), or panic at runtime in debug mode.

    One could test if shift is 8, and adjust code accordingly, but this adds branches and even more code.

    So the trick to work around that is simply... to shift twice ! One time for the first bit, and another for the last (potential 7):

    (myu8 >> 1) >> (8 - shift - 1)

    And that's how one can do this operation fully branchless.

    (another version of this post appeared on a now-defunct instance)

    #RustLang #bitmap #BitManip

  8. #Gravit Designer vs. #Corel Vector (2#4)

    Da ich bis heute keine Lösung gefunden habe, was das gvdesign Fileformat native und verlustfrei unterstützt, überlege ich mit Hilfe der alten OpenSource-Codes einen gvdesign Parser zu schreiben, und ggf. ein bessere Zielformat als SVG/PDF/PNG zu finden.

    Hat wer Lust hier mit zu machen?

    -> (3#4)

    \__
    #OpenSource #Bitmap #Vector #pwa #gvdesign #json #docker

  9. #Gravit Designer vs. #Corel Vector (1#4)

    Heute ist der Todestag von "Corel Vector", früher bekannt als "Gravit Designer". Imho eins der besten webbasierten Grafik-Design Apps, die wunderbar Vektor, Typo & Bitmap miteinander verbunden hat. Würde sagen, es war seiner Zeit um 10-12 Jahre voraus.

    Gravit Designer war sogar mal OpenSource. Deswegen habe ich darauf gesetz. Und nun hat Corel es wohl nur gekauft um es als Konkurent zu beseitigen.

    -> (2#4)

    \__
    #OpenSource #Bitmap #Vector #pwa

  10. A quadtree divides image according to a poisson disk (radius influence). Slight color variations, blur and texture applies randomly on the fly.

    #genart #creativecoding #p5js #photography #bitmap

  11. Perlin noise posterized. Each division is filled with a randomly mapped 1bit texture (single source file)

    #genart #bitmap #texture

  12. I really like this shooter. It's available for almost every video game console, old and new. Now also for the Gameboy Advanced. "Xenocrisis" by Bitmap Bureau LTD. #retrogames #retrogaming #shorts #bitmap #gba #gameboyadvance

  13. I really like this shooter. It's available for almost every video game console, old and new. Now also for the Gameboy Advanced. "Xenocrisis" by Bitmap Bureau LTD. #retrogames #retrogaming #shorts #bitmap #gba #gameboyadvance

  14. I've gone live!

    The 1694th Four Digit Bitmaps Are About To Pump Stream Of The Elevated Dabbers Society

    #bitmap #bitcoin #scifi #comedy #startrek

    https://go.warpspeedtv.com

  15. I've gone live!

    The 1694th Four Digit Bitmaps Are About To Pump Stream Of The Elevated Dabbers Society

    #bitmap #bitcoin #scifi #comedy #startrek

    https://go.warpspeedtv.com

  16. I've gone live!

    The 1694th Four Digit Bitmaps Are About To Pump Stream Of The Elevated Dabbers Society

    #bitmap #bitcoin #scifi #comedy #startrek

    https://go.warpspeedtv.com

  17. For A Project™, I need to learn about the historical origins of #bitmap #fonts. Highly doubt these were first created on computers; where in the world have rectangular #tiles or #bricks carried a textual message? (The tiled signs in the #NYC subway are #mosaics, not based on a grid.) Where did bitmap fonts really start?

    #typography #font #letters #lettering #history #histodons

    Image credit: myfontlib.com/font/gorgeous-pi

  18. @[email protected] @[email protected] @[email protected]

    Apparently, someone crammed 69666 characters of Unifont 13.0.06 into BDF for u8g2
    #font generation, so BDF evidently doesn't have that limit either, and upstream Unifont doesn't do this. Also, because of FontForge limits crashing when importing a lot of glyphs, evidently the BDF is custom on the u8g2 Github, but the problem is that it hasn't been updated to Unifont 15, so while Plane 1 is reduced two versions, Plane 0 is upgraded two versions, without going over 65535, ensuring better BDF compatibility, especially when doing low-level stuff (evidently not needed here). Then again, Minecraft uses .hex files in 1.20 to get around non-HarfBuzz TrueType limits. Also I can't run Unifont compilation utilities on any machine I've tried, so I'm stuck with what I've got.

    Sometimes it's okay to be proud of what you've got.
    I mean, it will work better on the older Linux builds its intended for, and it is actually generatable without crashes in FontForge, or forcing inflexible code to compile, or using the abridged Bits'N'Picas, which hates the BDF enough to not want to make a .hex.

    Compatibility is key, folx.


    #lcdmatrix #arduinos #arduinolibs #arduino #unifont #unifontex #linux #unicodesets #unicode #unicodefont #dotmatrix #dotmatrixlcd #vfd #oled #characterlcd #codingfont #electronics #electronic #tech #technology #C #ucglib #u8g2 #soldering #circuit #circuitry #electricalengineering #bitmap #bitmapfont #bitmapfonts #pixel #pixelfont #pixelfonts #statusdisplay #emoji #CJKtext #CJKVtext #lowlevel #hardwaredesign #hardwareengineering #Ccode #bdf #RLE #ttf #truetype #woff #woff2 #b3k #eot #otb #woff3 #bwtc32key #typography #fontdev #digitaldrain #finals #finalsweek #collegefinals #collegefinalsweek #electronicsprojects #tvhead #tvheadcostume #tvcostume #ledmatrix #ledarray #creditingamendment #costume #wiring #diyelectronics #fonts #lcdmatrix #arduinos #compatibility #compat #minecraft #hex #arduinolibs #arduino #unifont #unifontex #linux #unicodesets #unicode #unicodefont #dotmatrix #dotmatrixlcd #vfd #oled #characterlcd #codingfont #electronics #electronic #tech #technology #C #ucglib #u8g2 #soldering #circuit #circuitry #electricalengineering #bitmap #bitmapfont #bitmapfonts #pixel #pixelfont #pixelfonts #statusdisplay #emoji #CJKtext #CJKVtext #lowlevel #hardwaredesign #hardwareengineering #Ccode #bdf #RLE #ttf #truetype #woff #woff2 #b3k #eot #otb #woff3 #bwtc32key #typography #fontdev #digitaldrain #finals #finalsweek #collegefinals #collegefinalsweek #electronicsprojects #tvhead #tvheadcostume #tvcostume #ledmatrix #ledarray #creditingamendment #costume #wiring #diyelectronics