cocoa for nibbies [OpenGL context creation/ Initializing a PixelFormat]

Byron Clarke
Member
Posts: 63
Joined: 2005.04
Post: #1
Jun 6, 2005 — 10:58 PM
What is the correct way to initialize an OpenGl Context, set a pixelFormat using

Code:
-(id)initWithAttributes:(NSOpenGLPixelFormat*)attribs

here is my *cough* source code :-\



/* aGameGLView */

#import <Cocoa/Cocoa.h>

@interface aGameGLView : NSOpenGLView
{

BOOL readyToDraw;
NSRect* myRect;
NSOpenGLPixelFormat* myPixelFormat;
NSOpenGLContext* myContext;
NSOpenGLPixelFormatAttribute* attribs;

}

-(void)awakeFromNib;
-(void)drawRect:(NSRect)rect;
-(id)initWithAttributes:(NSOpenGLPixelFormatAttribute *)attribs;




#import "aGameGLView.h"
#define kWindowHeight 400
#define kWindowWidth 300

@implementation aGameGLView

-(void)awakeFromNib
{
    readyToDraw = NO;
    myPixelFormat = [[NSOpenGlPixelFormat alloc] init];
    myContext =[[NSOpenGLContext alloc] init];
    attribs = [NSOpenGLPFAAllRenderers,
NSOpenGLPFADoubleBuffer,
NSOpenGLPFAStereo,
NSOpenGLPFAMinimumPolicy,
NSOpenGLPFAMaximumPolicy,
NSOpenGLPFAOffScreen,
NSOpenGLPFAFullScreen,
NSOpenGLPFASingleRenderer,
NSOpenGLPFANoRecovery,
NSOpenGLPFAAccelerated,
NSOpenGLPFAClosestPolicy,
NSOpenGLPFARobust,
NSOpenGLPFABackingStore,
NSOpenGLPFAWindow,
NSOpenGLPFAMultiScreen,
NSOpenGLPFACompliant,
NSOpenGLPFAPixelBuffer, 0];
    
    
}

-(void)drawRect:(NSRect)rect
{
    
    // Check to see if we're initialized
    if(!readyToDraw)
    {
    
        readyToDraw = YES;
    }
}

@end
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OneSadCookie
Luminary
Posts: 5,131
Joined: 2002.04
Post: #2
Jun 7, 2005 — 10:55 AM
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Byron Clarke
Member
Posts: 63
Joined: 2005.04
Post: #3
Jun 7, 2005 — 03:41 PM
Thanks a lot for the help!!

oh, and kudos on the book!
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Byron Clarke
Member
Posts: 63
Joined: 2005.04
Post: #4
Jun 9, 2005 — 03:43 PM
I keep getting the build error : "too many filenames given. Type cc1obj --help for usage", what does this mean?
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Duane
Member
Posts: 567
Joined: 2004.07
Post: #5
Jun 9, 2005 — 04:22 PM
probably an xcode error—but then I'm usually wrong, so don't take my advice of doing it from the Terminal.
It's not magic, it's Ruby.
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OneSadCookie
Luminary
Posts: 5,131
Joined: 2002.04
Post: #6
Jun 10, 2005 — 09:30 AM
Definitely sounds like an Xcode problem

Is this in your own project, or one of my example projects?
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Byron Clarke
Member
Posts: 63
Joined: 2005.04
Post: #7
Jun 10, 2005 — 12:47 PM
The error occurs in my project, I wasn't aware that you had sample projects with your book, I'm sure if I had those to compare to mine I could find the reason for the problem. Thanks again for the help guys!
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Byron Clarke
Member
Posts: 63
Joined: 2005.04
Post: #8
Jun 23, 2005 — 01:23 AM
If it was not clear OneSadCookie's mini book answered my question

thanks ^^
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