QB64 Phoenix Edition
Fun with hardware acceleration. - Printable Version

+- QB64 Phoenix Edition (https://staging.qb64phoenix.com)
+-- Forum: Chatting and Socializing (https://staging.qb64phoenix.com/forumdisplay.php?fid=11)
+--- Forum: General Discussion (https://staging.qb64phoenix.com/forumdisplay.php?fid=2)
+--- Thread: Fun with hardware acceleration. (/showthread.php?tid=989)

Fun with hardware acceleration. - Pete - 10-20-2022

One nice effect is you can have 2 font sizes/styles in the same program. Here is a flow-through example with a large and small lucon font.

Code: (Select All)
$COLOR:32
DIM SHARED overlay, ii
f1 = 22 ' Sets font size to 22 and calculates the max screen height and width for your desktop.
h = (_DESKTOPHEIGHT - 60) \ f1
w = _DESKTOPWIDTH \ (f1 / 1.66)
WIDTH w, h
_SCREENMOVE 0, 0
fontpath$ = ENVIRON$("SYSTEMROOT") + "\fonts\lucon.ttf" 'Find Windows Folder Path.
font& = _LOADFONT(fontpath$, f1 - 2, "monospace") ' - 2 to shorten the screen height just a bit.
_FONT font&
_DELAY .25
swtch = 1

DO
    _LIMIT 30
    SELECT CASE swtch
        CASE 1
            CALL prog1
            IF INKEY$ = CHR$(27) THEN SYSTEM
        CASE -1
            CALL prog2
    END SELECT

    swtch = swtch * -1
LOOP

SUB prog1
    ii = ii + 1
    IF i > 300 THEN END ' Safety in case of memory leak.
    IF ABS(TIMER - z1) > .5 THEN LOCATE 2, 2: PRINT LTRIM$(STR$(ii)); "  ";
END SUB

SUB prog2
    STATIC target$, z2, bxx!
    hardware_top = 34
    bxy! = hardware_top

    overlay = _NEWIMAGE(_WIDTH * _FONTWIDTH, _HEIGHT * _FONTHEIGHT, 32)

    _DEST overlay

    font& = _LOADFONT("lucon.ttf", 12, "monospace")
    _FONT font&

    SELECT CASE target$
        CASE ""
            bxx! = RND * 80 + 5
            target$ = "on"
            z2 = TIMER
        CASE "on"
            COLOR Yellow, 0
            t$ = " " + CHR$(218) + STRING$(11, CHR$(196)) + CHR$(191) + " "
            PSL bxy!, bxx! - 1, t$
            FOR i = 1 TO 2
                t$ = " " + CHR$(179) + STRING$(11, CHR$(32)) + CHR$(179) + " "
                PSL bxy! + i, bxx! - 1, t$
            NEXT
            t$ = " " + CHR$(192) + STRING$(11, CHR$(196)) + CHR$(217) + " "
            PSL bxy! + i, bxx! - 1, t$
            t$ = LTRIM$(STR$(ii))
            PSL bxy! + 1.5, bxx! + 7.5 - LEN(LTRIM$(STR$(ii))) \ 2 - 1, t$
            IF ABS(z2 - TIMER) > 4 THEN
                z2 = TIMER
                target$ = "wait"
            ELSE
            END IF
        CASE "wait"
            IF ABS(z2 - TIMER) > 2 THEN
                z2 = TIMER
                target$ = ""
            END IF
    END SELECT

    _DISPLAY
    _FREEIMAGE overlay
    _DEST 0
END SUB

SUB PSL (y!, x, t$)
    _PRINTSTRING ((x - 1) * _FONTWIDTH, (y! - 1) * _FONTHEIGHT), t$
    Overlay_Hardware = _COPYIMAGE(overlay, 33)
    _PUTIMAGE (0, 0), Overlay_Hardware
    _FREEIMAGE Overlay_Hardware
END SUB

It's more fun and versatile than the old way of using PCOPY, because the screen properties like font size can be separated.

Pete