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- /* generic.m*/
-
- /* Demo of NEXTSTEP 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;
- }
-