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Better comments about drawing strategies,

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new define to specify using the alpha channel
This commit is contained in:
nigel 2002-12-18 12:05:48 +00:00
parent b7d39be14d
commit d94d399de8
1 changed files with 23 additions and 3 deletions
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26
BasiliskII/src/MacOSX/video_macosx.h
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@ -23,9 +23,29 @@
#import <video.h>
/* Set the strategy for drawing the bitmap in the Mac OS X window */
//#define CGIMAGEREF 15.05fps
//#define CGDRAWBITMAP 15.2fps
#define NSBITMAP 15.1fps
#define CGDRAWBITMAP
//#define CGIMAGEREF
//#define NSBITMAP
// The frames-per-second benchmark function on my machine does roughly:
//
// OS: 10.1.5 10.2.2
// CGDRAWBITMAP 15.2 36.6
// CGIMAGEREF 15.0 27-135(i)
// NSBITMAP 15.1 26.9
//
// (i) This seems to vary wildly between different builds on the same machine.
// I don't know why, but I definately don't trust it. Recently I noticed
// that it also varies by alpha channel strategy:
// kCGImageAlphaNone 36.6fps
// kCGImageAlphaPremultipliedFirst 112fps
// kCGImageAlphaNoneSkipFirst 135fps
/* When the BasiliskII video driver respects the alpha bits, set this to let us use */
/* kCGImageAlphaPremultipliedFirst, and to have nice rounded corners on the screen. */
//#define CG_USE_ALPHA
/* At the moment, it writes in the fill 32bits :-( */
#define MIN_WIDTH 512
#define MIN_HEIGHT 342