home *** CD-ROM | disk | FTP | other *** search
-
- BMVGTEFF
- ========
-
- (Benchmark for vgtext effects)
-
- By Darek Mihocka. Copyright (C) 1990 Branch Always Software.
-
- Branch Always Software
- Box 2624, Station B \
- Kitchener, Ontario - new address this summer!
- Canada N2H 6N2 /
-
- Compuserve: 73657,2714
- GEnie: DAREKM
-
- BMVGTEFF is a new benchmarking utility designed to benchmark areas of
- GEM that earlier benchmarking utilities such as Quick Index don't cover.
-
- In particular, BMVGTEFF tests GEM's ability to draw text to the screen
- using different text effects. These text effects are bold, italic,
- underlined, and grayed (or light), and are found in most word processors
- such as First Word or Word Writer.
-
- BMVGTEFF is extremely simple in it's operation. All it does it is
- print 5 lines of text to the screen over and over again, each time
- shifting the text over one pixel. Each line of text has a different
- text effect. The first line is plain text, the second line is bold
- text, the third line is grayed text, the fourth line is italic text,
- and the fifth line is underlined text.
-
- Each line of text will take between 2 and 5 seconds to print. If an
- accelerator is installed, the results will be faster.
-
- When this is completed, the program prints out five numbers on the screen,
- representing the relative time it took to print each text effect. Plain
- text is always fastest, and italicized text is usually slowest.
-
- BMVGTEFF can be used to measure how much faster various accelerators
- can make GEM at this particular operation. This is important because
- many word processors, and other GEM programs, make use of text effects.
- Unfortunately, this also has the effect of slowing the program down. If
- you have ever tried to italicize text in First Word, you know how much
- slower that is that using plain text.
-
- Using the Quick ST 2.1 software accelerator, printing of GEM text to the
- screen is made 2 to 5 times faster. The numbers below, measured on a
- 4 meg 1040STE, demonstrate this fact.
-
- In each screen resolution, the program was run 3 times. Once with a bare
- STE with the blitter turned off (which is a similar setup to a 520ST or
- 1040ST), once with the blitter turned on, and the third time with the
- Quick ST 2.1 software installed.
-
- Monochrome:
- no blitter with blitter with QST 2.1
- normal 499 210 40
- bold 862 508 65
- grayed 639 266 57
- italic 797 596 93
- underlined 555 235 47
-
- Medium resolution:
- no blitter with blitter with QST 2.1
- normal 523 220 32
- bold 901 435 44
- grayed 678 277 39
- italic 869 481 60
- underlined 587 246 35
-
- Low resolution:
- no blitter with blitter with QST 2.1
- normal 626 216 43
- bold 1030 340 54
- grayed 756 238 50
- italic 1014 428 71
- underlined 642 221 46
-
- The numbers above show that in some cases, GEM text will be about
- 5 times faster than without using Quick ST. The blitter chip helps
- a little, but is a far cry from what an efficient text drawing routine
- is capable of doing. These same sort of speed increases also occur
- when using GDOS fonts and Quick ST 2.1.
-
-
-