Attachment 766 Details for Bug 5415 – Reference code

Reference code

blitter.m (text/plain), 6.40 KB, created by Pierre Ossman on 2016-12-29 11:24:10 CET

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Creator: Pierre Ossman

Created: 2016-12-29 11:24:10 CET

Size: 6.40 KB

patch

obsolete

>#import <Cocoa/Cocoa.h>
>
>//#define USEBITMAP
>
>@interface MyView : NSView {
>    CGContextRef bitmap;
>    unsigned char* data;
>    CGImageRef image;
>
>    unsigned long long pixels;
>    unsigned long long frames;
>}
>
>@property (readonly) unsigned long long pixels;
>@property (readonly) unsigned long long frames;
>
>@property(getter=isOpaque, readonly) BOOL opaque;
>@property(readonly) BOOL wantsDefaultClipping;
>
>@end
>
>@implementation MyView
>
>- (id)init {
>    self = [super initWithFrame:NSMakeRect(0, 0, 1024, 768)];
>
>    //[self setWantsLayer:YES];
>
>    CGColorSpaceRef lut;
>    lut = CGDisplayCopyColorSpace(kCGDirectMainDisplay);
>    data = malloc(self.frame.size.width * self.frame.size.height * 4);
>
>#ifdef USEBITMAP
>    bitmap = CGBitmapContextCreate(data, self.frame.size.width, self.frame.size.height, 8, self.frame.size.width * 4, lut, kCGImageAlphaNoneSkipFirst | kCGBitmapByteOrder32Little);
>#else
>    CGDataProviderRef provider = CGDataProviderCreateWithData(NULL, data, self.frame.size.width * self.frame.size.height * 4, NULL);
>    image = CGImageCreate(self.frame.size.width, self.frame.size.height, 8, 32, self.frame.size.width * 4, lut, kCGImageAlphaNoneSkipFirst | kCGBitmapByteOrder32Little, provider, NULL, false, kCGRenderingIntentDefault);
>    CGDataProviderRelease(provider);
>#endif
>
>    CGColorSpaceRelease(lut);
>
>    [NSTimer scheduledTimerWithTimeInterval:10.0 target:self selector:@selector(onTimeout:) userInfo:nil repeats:NO];
>
>    pixels = 0;
>    frames = 0;
>
>    return self;
>}
>
>- (void)dealloc {
>    free(data);
>    [super dealloc];
>}
>
>- (unsigned long long)pixels {
>    return pixels;
>}
>
>- (unsigned long long)frames {
>    return frames;
>}
>
>- (BOOL)isOpaque {
>    return YES;
>}
>
>- (BOOL)wantsDefaultClipping {
>    return NO;
>}
>
>- (void)drawRect:(NSRect)dirtyRect {
>    //[super drawRect:dirtyRect];
>
>    CGContextRef gc;
>    
>    memset(data, rand(), self.frame.size.width * self.frame.size.height * 4);
>
>    gc = [[NSGraphicsContext currentContext] graphicsPort];
>    //CGContextSaveGState(gc);
>
>#ifdef USEBITMAP
>    image = CGBitmapContextCreateImage(bitmap);
>#endif
>    CGContextDrawImage(gc, CGRectMake(0, 0, self.frame.size.width, self.frame.size.height), image);
>#ifdef USEBITMAP
>    CGImageRelease(image);
>#endif
>
>    //CGContextRestoreGState(gc);
>
>    frames++;
>    pixels += self.frame.size.width * self.frame.size.height;
>
>    [NSTimer scheduledTimerWithTimeInterval:0 target:self selector:@selector(onTimer:) userInfo:nil repeats:NO];
>}
>
>- (void)onTimer:(NSTimer*)timer {
>     [self setNeedsDisplay:true];
>}
>
>- (void)onTimeout:(NSTimer*)timer {
>    fprintf(stderr, "Stopping!\n");
>    [NSApp terminate:self];
>}
>
>@end
>
>@interface MyApp: NSObject <NSApplicationDelegate> {
>    struct timeval start, stop;
>    struct rusage cpuStart, cpuStop;
>}
>@end
>
>@implementation MyApp
>- (void)applicationDidFinishLaunching:(NSNotification *)notification {
>    gettimeofday(&start, NULL);
>    getrusage(RUSAGE_SELF, &cpuStart);
>}
>
>
>static size_t doPrefix(long long value, const char *unit,
>                     char *buffer, size_t maxlen,
>                     unsigned divisor, const char **prefixes,
>                     size_t prefixCount) {
>double newValue;
>size_t prefix, len;
>
>newValue = value;
>prefix = 0;
>while (newValue >= divisor) {
>  if (prefix >= prefixCount)
>    break;
>  newValue /= divisor;
>  prefix++;
>}
>
>len = snprintf(buffer, maxlen, "%g %s%s", newValue,
>               (prefix == 0) ? "" : prefixes[prefix-1], unit);
>buffer[maxlen-1] = '\0';
>
>return len;
>}
>
>static const char *siPrefixes[] =
>{ "k", "M", "G", "T", "P", "E", "Z", "Y" };
>static const char *iecPrefixes[] =
>{ "Ki", "Mi", "Gi", "Ti", "Pi", "Ei", "Zi", "Yi" };
>
>size_t siPrefix(long long value, const char *unit,
>              char *buffer, size_t maxlen) {
>return doPrefix(value, unit, buffer, maxlen, 1000, siPrefixes,
>                sizeof(siPrefixes)/sizeof(*siPrefixes));
>}
>
>size_t iecPrefix(long long value, const char *unit,
>               char *buffer, size_t maxlen) {
>return doPrefix(value, unit, buffer, maxlen, 1024, iecPrefixes,
>                sizeof(iecPrefixes)/sizeof(*iecPrefixes));
>}
>
>- (NSApplicationTerminateReply)applicationShouldTerminate:(NSApplication *)sender
>{
>    double realTime, encodeTime;
>    double sysSeconds, userSeconds;
>    id view;
>    char s[1024];
>
>    getrusage(RUSAGE_SELF, &cpuStop);
>    gettimeofday(&stop, NULL);
>
>    realTime = (double)stop.tv_sec - start.tv_sec;
>    realTime += ((double)stop.tv_usec - start.tv_usec)/1000000.0;
>
>    sysSeconds = (double)(cpuStop.ru_stime.tv_sec -
>                          cpuStart.ru_stime.tv_sec);
>    sysSeconds += (double)(cpuStop.ru_stime.tv_usec -
>                           cpuStart.ru_stime.tv_usec) / 1000000.0;
>
>    userSeconds = (double)(cpuStop.ru_utime.tv_sec -
>                           cpuStart.ru_utime.tv_sec);
>    userSeconds += (double)(cpuStop.ru_utime.tv_usec -
>                            cpuStart.ru_utime.tv_usec) / 1000000.0;
>
>    encodeTime = sysSeconds + userSeconds;
>
>    view = [[[NSApp windows] objectAtIndex:0] contentView];
>
>    siPrefix([view pixels] / realTime, "Pixels/s", s, sizeof(s));
>    fprintf(stderr, "Fill rate: %s\n", s);
>    fprintf(stderr, "Frame rate: %g fps\n", (double)[view frames] / realTime);
>    fprintf(stderr, "CPU Usage: %g %%\n", 100.0 * encodeTime / realTime);
>
>    return NSTerminateNow;
>}
>
>@end
>
>int main ()
>{
>    [NSAutoreleasePool new];
>    [NSApplication sharedApplication];
>    [NSApp setActivationPolicy:NSApplicationActivationPolicyRegular];
>    id menubar = [[NSMenu new] autorelease];
>    id appMenuItem = [[NSMenuItem new] autorelease];
>    [menubar addItem:appMenuItem];
>    [NSApp setMainMenu:menubar];
>    id appMenu = [[NSMenu new] autorelease];
>    id appName = [[NSProcessInfo processInfo] processName];
>    id quitTitle = [@"Quit " stringByAppendingString:appName];
>    id quitMenuItem = [[[NSMenuItem alloc] initWithTitle:quitTitle
>        action:@selector(terminate:) keyEquivalent:@"q"] autorelease];
>    [appMenu addItem:quitMenuItem];
>    [appMenuItem setSubmenu:appMenu];
>
>    id window = [[[NSWindow alloc] initWithContentRect:NSMakeRect(0, 0, 1024, 768)
>        styleMask:NSTitledWindowMask backing:NSBackingStoreBuffered defer:NO]
>            autorelease];
>    [window cascadeTopLeftFromPoint:NSMakePoint(20,20)];
>    [window setTitle:appName];
>    [window makeKeyAndOrderFront:nil];
>
>    id view = [[MyView alloc] init];
>    [window setContentView:view];
>
>    [NSApp setDelegate:[[MyApp alloc] init]];
>
>    [NSApp activateIgnoringOtherApps:YES];
>    [NSApp run];
>
>    return 0;
>}

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