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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@cribx1.u-bordeaux.fr
- * OpenStep conversion by Pete French
- * pete@ohm.york.ac.uk
- */
-
- #import <appkit/Application.h>
- #import <appkit/Window.h>
- #import <appkit/Menu.h>
- #import <appkit/View.h>
- #import <appkit/color.h>
- #import <appkit/NXBitmapImageRep.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;
- id myWindow;
- id myView;
- id myMenu;
- char name[50];
- unsigned long start, end;
- NXBitmapImageRep *bitmap;
- NXRect GR;
-
- NXApp=[Application new];
-
- /* 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 );
-
- /* Fill the bitmap with the buffer */
- bitmap = [[ NXBitmapImageRep alloc]
- initData: buffer
- pixelsWide:gl_width
- pixelsHigh:gl_height
- bitsPerSample:8
- samplesPerPixel:4
- hasAlpha:YES
- isPlanar:NO
- colorSpace: 2
- bytesPerRow:gl_width*4
- bitsPerPixel: 32];
-
- NXSetRect(&GR,100, 100, gl_width, gl_height);
-
- myWindow = [[ Window alloc]
- initContent: &GR
- style:NX_TITLEDSTYLE
- backing: NX_BUFFERED
- buttonMask: NX_MINIATURIZEBUTTONMASK
- defer: NO];
-
- sprintf(name, "Mesa demo: `%s'", argv[0]);
-
- myView = [[ View alloc] initFrame:&GR];
-
- myMenu = [[ Menu alloc] initTitle: "NeXTStep Mesa"];
- [myMenu addItem: "Quit"
- action:@selector(terminate:)
- keyEquivalent: 'q'];
- [myMenu sizeToFit];
-
- [myWindow setTitle: name];
- [myWindow display];
- [myWindow setContentView:myView];
- [myWindow makeKeyAndOrderFront:nil];
-
- [NXApp 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];
- /* free the bitmap */
- [bitmap free];
- [myWindow flushWindow];
- [myView unlockFocus];
- free( buffer );
-
- /* destroy the context */
- OSMesaDestroyContext( ctx );
-
- [NXApp run];
- [NXApp free];
-
- return 0;
- }
-