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/* generic.m*/
/* Demo of OPENSTEP Mesa rendering */
/*
* See Mesa/include/GL/osmesa.h for documentation of the OSMesa functions.
*
* If you want to render BIG images you'll probably have to increase
* MAX_WIDTH and MAX_HEIGHT in src/config.h.
*
* This program is in the public domain.
*
* Brian Paul
*
* NEXTSTEP output provided by Pascal Thibaudeau
* pthibaud@frbdx11.cribx1.u-bordeaux.fr
* OpenStep conversion by Pete French
* pete@ohm.york.ac.uk
*/
#import <AppKit/AppKit.h>
#import <stdio.h>
#import <stdlib.h>
#import "GL/osmesa.h"
extern int gl_width,gl_height;
extern void render_image(void);
int main( int argc, char *argv[] )
{
OSMesaContext ctx;
unsigned char *buffer;
NSWindow *myWindow;
NSView *myView;
NSMenu *myMenu;
NSBitmapImageRep *bitmap;
unsigned long start, end;
char name[50];
NSRect GR;
NSPoint position;
[[NSAutoreleasePool alloc] init];
NSApp=[NSApplication sharedApplication];
/* Create an RGBA-mode context */
ctx = OSMesaCreateContext( GL_RGBA, NULL );
/* Allocate the image buffer */
buffer = malloc( gl_width * gl_height * 4 );
/* Bind the buffer to the context and make it current */
OSMesaMakeCurrent( ctx, buffer, GL_UNSIGNED_BYTE, gl_width, gl_height );
OSMesaPixelStore( OSMESA_Y_UP, 0 );
bitmap = [[ NSBitmapImageRep alloc] initWithBitmapDataPlanes:&buffer
pixelsWide:gl_width
pixelsHigh:gl_height
bitsPerSample:8 samplesPerPixel:4
hasAlpha:YES isPlanar:NO
colorSpaceName:NSDeviceRGBColorSpace
bytesPerRow:0 bitsPerPixel:0];
GR = NSMakeRect(100, 100, gl_width, gl_height);
myWindow = [[ NSWindow alloc] initWithContentRect:GR
styleMask:NSTitledWindowMask|
NSMiniaturizableWindowMask
backing:NSBackingStoreBuffered defer:NO];
sprintf(name, "Mesa demo: `%s'", argv[0]);
myView = [[ NSView alloc] initWithFrame:GR];
myMenu = [[ NSMenu alloc] initWithTitle:@"OpenStep Mesa"];
[myMenu addItemWithTitle:@"Quit"
action:@selector(terminate:)
keyEquivalent:@"q"];
[myMenu sizeToFit];
[myWindow setTitle:[NSString stringWithCString:name]];
[myWindow display];
[myWindow setContentView:myView];
[myWindow makeKeyAndOrderFront:nil];
[NSApp setMainMenu:myMenu];
[myView lockFocus];
/* here is the Mesa call */
start=time(0);
render_image();
end=time(0);
printf("Rendering took %ld seconds\n",end-start);
fflush(stdout);
/* draw the bitmap */
[bitmap draw];
[bitmap release];
[myWindow flushWindow];
[myView unlockFocus];
free( buffer );
/* destroy the context */
OSMesaDestroyContext( ctx );
[NSApp run];
[NSApp release];
return 0;
}
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