[Okta Webinar] Learn how to a build a cloud-first strategyRegister Now

x
?
Solved

problem with RGB color mode

Posted on 2002-03-14
2
Medium Priority
?
320 Views
Last Modified: 2013-12-26
Hi guys!! i'm having a problem with RGB color mode. in my computer (5x6x5) the game works pretty well, but on other computers (my friends') the color mode is said to be "not supported", i'm wondering why is that? here's the code i've been using in my program:

// get pixel format
     ddsd.dwSize  = sizeof(ddsd);
     ddsd.dwFlags = DDSD_PIXELFORMAT;
     if (FAILED(lpddsprimary->GetSurfaceDesc(&ddsd)))
          {WriteError("DirectDraw: Pixel Format not available"); return(0);}

     // get color type (5x5x5 or 5x6x5), we need only green value
     int g = ddsd.ddpfPixelFormat.dwGBitMask>>5; // throw 5 bits used for red
     if (g == 0x1F) color_type = _5x5x5_;          // 0x1F = 31 (5 bit)
     else if (g == 0x3F) color_type = _5x6x5_;     // 0x3F = 63 (6 bit)
     else
     {
          char buff[60];
          sprintf(buff,"DirectDraw: Color Mode not supported\n"
               "(Green = %d)", g);
          WriteError(buff);     // don't know what is the color mode
          return(0);
     }

i suppose there would be no problems detecting both 5x6x5 and 5x5x5, so it shouldn't give me the message "DirectDraw: Color Mode not supported" right? so what is wrong with it? is there any other color mode i've overlooked anyhow?

thanks in advance!!!

0
Comment
Question by:techpage
2 Comments
 
LVL 3

Accepted Solution

by:
Crius earned 150 total points
ID: 6869647
Have you taken a look at dwRGBBitCount?

It's possible your friend's computer is not running in a 16 bit display (which is why you need to do a 5x6x5, or a 5x5x5 test).

If he is running a 24 bit or a 32 bit display, then the dwRGBBitCount will be 24 or 32. The code I'm reading should only be run if dwRGBBitCount is 16.
0
 
LVL 3

Author Comment

by:techpage
ID: 6871827
thanks, you're right... it is indeed the color depth, *sigh* i've been thinking it was the color mode all this time...
0

Featured Post

Independent Software Vendors: We Want Your Opinion

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

As game developers, we quickly learn that Artificial Intelligence (AI) doesn’t need to be so tough.  To reference Space Ghost: “Moltar, I have a giant brain that is able to reduce any complex machine into a simple yes or no answer. (http://www.youtu…
Performance in games development is paramount: every microsecond counts to be able to do everything in less than 33ms (aiming at 16ms). C# foreach statement is one of the worst performance killers, and here I explain why.
We’ve all felt that sense of false security before—locking down external access to a database or component and feeling like we’ve done all we need to do to secure company data. But that feeling is fleeting. Attacks these days can happen in many w…
Is your data getting by on basic protection measures? In today’s climate of debilitating malware and ransomware—like WannaCry—that may not be enough. You need to establish more than basics, like a recovery plan that protects both data and endpoints.…
Suggested Courses

834 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question