HW image version of this little stupid thing

[bplus]

The reason you're getting 1000 FPS in hardware mode is because that's the upper limit that can be calculated with TIMER(.001). Only when hardware is taxed enough will the frame rate drop below 1000. The program crashes for me when I try to go a few more than 8000 sprites. Perhaps someone with a better video card and more RAM can tax the hardware layer enough to start seeing the FPS drop below 1000 in hardware mode. (or someone has a better timing method I can use)

Try this little demo to showcase the difference in speed between Hardware Images and Software Images:

Code: (Select All)

DIM AS LONG HWscreen, SWscreen, DisplayScreen, TempScreen

DisplayScreen = _NEWIMAGE(1280, 720, 32)

SWscreen = _NEWIMAGE(64, 8, 32)

TempScreen = _NEWIMAGE(64, 8, 32)



'draw a few characters for screen display

_DEST TempScreen 'make a temp software screen to print on

_FONT 8 'size 8 font

_PRINTSTRING (0, 0), "Hardware" 'print the word "Hardware"

HWscreen = _COPYIMAGE(TempScreen, 33) 'make a copy of that temp screen as a hardware screen

_FREEIMAGE TempScreen 'free the temp screen





_DEST SWscreen 'Draw on a software screen

_FONT 8 'same size font 8

_PRINTSTRING (0, 0), "Software" 'And print the word Software on this screen

_DEST DisplayScreen

SCREEN DisplayScreen



HardwareMode = 0 'let's start out in software mode





xdirection = 1: ydirection = 1



DO



    IF TIMER > t# THEN

        IF FPS > maxFPS THEN maxFPS = FPS

        _TITLE "FPS:" + STR$(FPS) + " -- MaxFPS:" + STR$(maxFPS)

        t# = TIMER

        FPS = 0

    ELSE

        FPS = FPS + 1

    END IF



    x = x + xdirection

    y = y + ydirection

    IF x < 0 OR x > _WIDTH THEN xdirection = -xdirection

    IF y < 0 OR y > _HEIGHT THEN ydirection = -ydirection





    IF HardwareMode THEN

        _DISPLAYORDER _HARDWARE

        _PUTIMAGE (x, y), HWscreen

    ELSE

        _DISPLAYORDER _SOFTWARE

        CLS

        _PUTIMAGE (x, y), SWscreen, DisplayScreen

    END IF

    k = _KEYHIT

    SELECT CASE k

        CASE 27: SYSTEM

        CASE ASC("H"), ASC("h"): HardwareMode = -1: maxFPS = 0: FPS = 0

        CASE ASC("S"), ASC("s"): HardwareMode = 0: maxFPS = 0: FPS = 0

    END SELECT

    _DISPLAY

LOOP

On my PC, I get about 100 FPS for the software image animation, and about 130,000 FPS for the hardware image animation.

I think that's enough to showcase a slight difference in the performance between the two. 

heh, heh yeah slight difference. I knew Steve had something on this subject!