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<1234567…34>
  • Writing to the screen from a bufferI?m designing a game and am spending a bit of time trying different ideas before I commit my self. I?m currently thinking of writing data to a buffer…

    ... of writing data to a buffer and then writing this ?back ... the whole screen be drawn from the buffer without flicker ? If not ...
    Mr Millside Mr Millside June 2009 Development
  • 64x48 monochrome big pixels display ideaHi. I was playing with this idea of having a simple 64x48 bytes buffer, 1 byte per pixel, then a renderer which would take that buffer and render it…

    ... , the routine to copy pixels from linear buffer to screen would be trivial ... , using a linear buffer to store attributes, implemented as a "multicolor render" that ... reads on-the-fly from this linear buffer and modifies ...
    Einar Saukas Einar Saukas December 2014 Development
  • 64x48 monochrome big pixels display ideaHi. I was playing with this idea of having a simple 64x48 bytes buffer, 1 byte per pixel, then a renderer which would take that buffer and render it…

    ... 's the point of this buffer business?[/QUOTE]

    ... IMHO a buffer makes sense in a demo ... to implement the custom optimized multicolor routine I suggested. In ... to control multicolor, so using this time to also copy from linear buffer would ...
    Einar Saukas Einar Saukas December 2014 Development
  • 24-Wide or 26-Wide Multicolour Tile EngineI've been playing about with more multicolour routines (8x1, 8x2 etc.) and have one a bit clever and suitable for a tile-based game. No particular d…

    I suppose you are talking about 8x2 multicolor with linear buffer... right?

    [I]
    EDIT: Ops! You have just answered my question.[/I]
    Einar Saukas Einar Saukas August 2013 Development
  • filled shape creating codeDevelopment is continuing well on a resurrected project of mine from about 20 years ago. Speed and size optimizations are going well along with displ…

    ... .

    Drawing line in linear buffer, inner loop:
    add hl ... line.

    XOR-fill from linear buffer to screen:
    pop de ...
    Alone Coder Alone Coder October 2013 Development
  • 64x48 monochrome big pixels display ideaHi. I was playing with this idea of having a simple 64x48 bytes buffer, 1 byte per pixel, then a renderer which would take that buffer and render it…

    ... , my routine to copy pixels from linear buffer to screen took 50,142 ... T-states. Therefore copying entire buffer to screen will be 49 ...
    Einar Saukas Einar Saukas December 2014 Development
  • 64x48 monochrome big pixels display ideaHi. I was playing with this idea of having a simple 64x48 bytes buffer, 1 byte per pixel, then a renderer which would take that buffer and render it…

    ... follows: First, copy 32 attributes from linear buffer to next attribute row, simply ... ]. Afterwards read next 32 attributes from linear buffer and "poke" these values into ... enough time left to calculate linear buffer addresses dynamically as you mentioned ...
    Einar Saukas Einar Saukas December 2014 Development
  • Let's copy buffers!Figured I'd do some double buffered graphics, so I can render for several frames before displaying stuff. Yes, I mean on a 48k speccy, so no 128k spe…

    ...
    ; read 12 bytes from linear buffer (left side)
    buffer1:
    ld sp, buffer
    pop af
    ...
    ; read 12 bytes from linear buffer (right side)
    buffer2:
    Einar Saukas Einar Saukas April 2016 Development
  • Let's copy buffers!Figured I'd do some double buffered graphics, so I can render for several frames before displaying stuff. Yes, I mean on a 48k speccy, so no 128k spe…

    ...
    ; read 12 bytes from linear buffer (left side)
    buffer1:
    ld sp, buffer
    pop af
    ...
    ; read 12 bytes from linear buffer (right side)
    buffer2:
    Einar Saukas Einar Saukas April 2016 Development
  • Let's copy buffers!Figured I'd do some double buffered graphics, so I can render for several frames before displaying stuff. Yes, I mean on a 48k speccy, so no 128k spe…

    ... for the routine and the buffer RAM is in uncontended memory ... , as well as performing conversion from linear buffer to wierdo Speccy screen format ...
    Mysterion Mysterion April 2016 Development
  • Raster effects - quick questionHi Guys Just a quick question regards what the ULA is doing as its drawing each scan line. Assuming the beam has finished drawing the border, am I…

    ... more of a problem for multicolor games. With that in mind ... can read attribute values from my own linear buffer of 32x24 bytes into ... can read attribute values from my own linear buffer, now modified to 32x48 ... of data at a time from the buffer into a register, it ...
    Dax Trajero Dax Trajero August 2019 Development
  • Double Buffer UtilityHi Folks, I've been experimenting with double buffering on a 48k Speccy for a small project I'm working on. After reading lots of good advice here…

    ... /> self.sourceXPos = self.inputValue('Copy from buffer x-position in (integer) characters ... /> self.sourceYPos = self.inputValue('Copy from buffer y-position in (integer) pixels ...
    KrazyKattapilla KrazyKattapilla August 2014 Development
  • T.I.M. - A New Interlace - Demo for DOWNLOADHere's something that's been in the works for quite a while ( mostly in my head ) and recently I've aquired assistance to help it come to fruition. …

    ... br /> this one moves data from linear backbuffer to screen... aprox 14 ... [code]
    start ld hl, buffer alligned on 256
    exx ... ;11 next line in back buffer



    ... ;11 next line in back buffer



    ...
    Fikee Fikee May 2005 Development
  • Question about digitized sound and videoI searched the forums and couldn't find the answer, so here it goes. Regarding digitized sound: I remember reading an article long ago about a vid…

    ... stopping periodically to dump something from that buffer to the AY) and ... PC sound editor, they expect linear DA output.[/quote]
    Yep ... sample playback of all comes from work done by Arturo ... determine the best possible transitions from one AY state to ...
    gasman gasman May 2007 Development
  • Recent talk of developing new SpectrumsHi all, I can see from a few threads on here that some Wossers like Vasil and Aien 8 are interested in developing more powerful Spectrums or improvi…

    ... advantage goes clearly to the linear buffer.[/QUOTE]
    Not so ... /> ...
    [/CODE]
    jumping from one to another @ segment change ... cases, and with simple linear framebuffer you can't take ... be much simpler with a linear buffer.[/QUOTE]
    Not so ...
    TVzombie TVzombie January 2011 Hardware
  • LZ77 en/decodingI've written an LZ77 en/decoding routine as I couldn't find one around for the Spectrum. Initially I'm just doing it in BASIC to get the logic right.…

    ... time to remove stuff from the front of the ... back to zero. The linear buffer in memory wraps in a ... to remove y-bytes from the beginning of the window ... two concatenated linear arrays while reading. You go from 'start' ... end of the buffer and then from 0 to 'end ...
    Alcoholics Anonymous Alcoholics Anonymous March 2012 Development
  • Screen routinesHello. For my games I?m using the sprites routine method of a screen buffer and when I finish to print all the sprites I dump all the buffer in the …

    ... .

    The buffer is linear, so updating it should be ... sprites directly in the buffer. Now, apart from masking you'll also ... sprite, but since the buffer is linear, going down a line ... adding the width. And the linear buffer may have invisible zones that ...
    Metalbrain Metalbrain May 2012 Development
  • GUI/OS for the Spectrum?Hi, Is anybody working on a WIMP/GUI system for the Spec? Is there anything current out there? [url]http://snakeoillabs.com/wordpress/2005/10/30/8…

    ... 631614]why people think that linear buffer is faster ?[/QUOTE]
    linear frame buffer is quite obviously ... of the frame buffer layout generally had ... more than one byte from the same row of ... the frame buffer wasn't a chunky linear display, but ...
    Winston Winston June 2012 Development
  • BIFROST* ENGINE 1.2 released!Another improved version of the BIFROST* ENGINE is now available! Download it here: [url]http://www.worldofspectrum.org/infoseekid.cgi?id=0027405[/u…

    ... looped code and a moveable buffer pointer, and 28-wide if ... . And that's still copying from a linear buffer. Using LD/PUSH it ...
    joefish joefish July 2012 Brand new software
  • RCS (Reverse Computer Screen)[B]RCS[/B] ("Reverse Computer Screen", or simply SCR written backwards) is a small utility I'm about to release, that reorders bytes from the ZX-Spec…

    ... 's. This is very different from Spectrum screens, where sequences are ... filters before:
    1. From spectrum to linear buffer. (not RCS)
    2 ...
    antoniovillena antoniovillena February 2013 Development
  • RCS (Reverse Computer Screen)[B]RCS[/B] ("Reverse Computer Screen", or simply SCR written backwards) is a small utility I'm about to release, that reorders bytes from the ZX-Spec…

    ... filters before:
    1. From spectrum to linear buffer. (not RCS)
    2 ...
    Einar Saukas Einar Saukas February 2013 Development
  • RCS (Reverse Computer Screen)[B]RCS[/B] ("Reverse Computer Screen", or simply SCR written backwards) is a small utility I'm about to release, that reorders bytes from the ZX-Spec…

    ... before:
    1. From spectrum to linear buffer. (not RCS)
    linear buffer" transformation is identified as ... These results (using linear buffer and XOR with previous ... unfortunate, since encoding linear buffer is much easier than ...
    Einar Saukas Einar Saukas February 2013 Development
  • 30-column 8x2 multicolor (even in 48K)I don't recall any 8x2 multicolor routine for 30 columns that would work on all Spectrum models (including the Spectrum 48K), so I decided to write i…

    ... ?p=640563"]28 columns reading from a linear buffer[/URL]. And I doubt ...
    Einar Saukas Einar Saukas August 2013 Development
  • 24-Wide or 26-Wide Multicolour Tile EngineI've been playing about with more multicolour routines (8x1, 8x2 etc.) and have one a bit clever and suitable for a tile-based game. No particular d…

    ... I didn't use a linear buffer.

    I suppose the ... main advantage of a linear buffer would be scrolling. That's ... someone else could provide a multicolor engine focused on that!
    Einar Saukas Einar Saukas August 2013 Development
  • What would you do with four joysticks?Anyone got some inspiring ideas for four-player games, or twin-stick two-player games..? I can think of, for four players: [I]Warlords[/I] (Atari) […

    ... /> The colour map is a linear buffer that is actually 32 characters ... patch the attributes by copying from the clean background map. Then ...
    joefish joefish October 2013 New game ideas
  • Is ESXDOS flexible enough to incorporate e.g. Spectranet commands?I was just discussing the idea with someone about the wish some people have to be able to combine interfaces such as DivIDE (Plus) / DivMMC EnJOY! wi…

    ... block of data from the driver into a buffer in user space ... one byte at a time from the buffer and qualify it by ... missing here is a buffer allocator and linear buffer data type for reading ... -recently-used ones on request from the allocator when memory becomes ...
    Alcoholics Anonymous Alcoholics Anonymous February 2014 Hardware
  • Spectrum screen layoutSeeing the thread on displacement I was wondering why the spectrum had the stupid screen split into three sections and the addresses for each section…

    ... same difficulty to do a linear buffer as it is to do ... code whereas with the non-linear method is amortized to 1 ... screen :) But admittedly, that results from one string of choices that ... speculated that the non-linear order of the buffer spreads out the ...
    Alcoholics Anonymous Alcoholics Anonymous May 2014 Sinclair Miscellaneous
  • TommyGun's getting a Debuggerhttp://youtu.be/B_kZVRvYV98 I have always wanted to debug the programs I write in TommyGun using TommyGun instead of the debuggers in emulators. …

    ... configuration like:
    - output buffer width in bytes.
    [/quote ... default to 0, asssuming a linear buffer.
    [/quote]
    ... as that is all controlled from the image code generators. ... can check the generated code from within the editor.
    ...
    Kiwi Kiwi July 2016 Development
  • off screen bufferwhen using an offscreen buffer is the memory copied to the screen in a way that makes it easier to draw sprites to the buffer? E.g. Lets say you…

    ... [b]1.[/b]
    Background buffer may be organised in whatever ... proper procedure which will copy buffer to screen and take ... games would be:
    - linear (next horizontal line data is ... parts of location but not from sprite buffer but from location data
    Ralf Ralf June 2017 Development
  • Raster effects - quick questionHi Guys Just a quick question regards what the ULA is doing as its drawing each scan line. Assuming the beam has finished drawing the border, am I…

    ... 'only' require only 32x48, read from a linear buffer.

    Checked out ... if this uses a linear buffer to read attrs from.

    Also ... really admire too.

    From what I can gather for ...
    Dax Trajero Dax Trajero August 2019 Development
<1234567…34>

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