Bitmaps

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James Gale
2004-08-18
2004-08-20
  • James Gale

    James Gale - 2004-08-18

    Hi there.

    Firstly I downloaded the cvs so i should have the latest versions of the openxdk files.

    I just got a problem with bitmaps.  I got this piece of code from a tutorial on the net and the guy who i presume wrote it seems to have no trouble.  I can compile other programs fine.  Just not any with bitmaps.

    Heres the code...

    // This demo code is referenced from one of the openxdk samples on
    // sourceforge - caustik

    #include <openxdk.h>
    #include <xgfx2d/bitmap.h>             // Bitmap*, get_screen_bitmap()..

    // Program Entry Point
    void XBoxStartup()
    {
          vga_init_mode(MODE_320x240x32);    // Init screen render surface

          Bitmap      *screen = get_screen_bitmap();

          int xx, y, x;

          while(true)
          {
                vga_vsync();                              // Wait for Vertical Blank
                vga_flip();                               // Flip

                //generate a pretty colour background on the screen
                uint32      *p = screen->data;

                for (y=0; y<screen->h; y++)
                {
                      for (x=0; x<screen->w; x++)
                      {
                            *p++ = ((x+xx)^y)&0xFF;       //yay a XOR pattern!!! :D
                      }
                }

                xx++;
          }

        HalReturnToFirmware(ReturnFirmwareFatal);

        return;
    }// End

    When i try to compile it i get...

    ------ Build started: Project: OpenXDKBlank, Configuration: Release Win32 ------
    Compiling...
    main.cpp
    d:\programming\oxdk projects\3d play\main.cpp(32) : warning C4700: local variable 'xx' used without having been initialized
    Linking...
    main.obj : error LNK2019: unresolved external symbol _get_screen_bitmap referenced in function _XBoxStartup
    Release/OpenXDKBlank.exe : fatal error LNK1120: 1 unresolved externals

    Build log was saved at "file://d:\Programming\OXDK Projects\3D Play\Release\BuildLog.htm"
    OpenXDKBlank - 2 error(s), 1 warning(s)
    ---------------------- Done ----------------------

        Build: 0 succeeded, 1 failed, 0 skipped

     
    • James Gale

      James Gale - 2004-08-19

      I just had a thought.

      I just started on some code last night and made a class and got a similar error when trying to access a class that i created. 

      Is there a setting in vs.net that i could have stuffed up to somehow not let me use classes?

      I don't have the code for the other stuff im doing as im at work.  Sorry.

       
    • Craig Edwards

      Craig Edwards - 2004-08-20

      The function that it cannot find is contained in xgfx2d.lib.  Are you sure that it is included in your link statement?

      --
      Craig

       
      • James Gale

        James Gale - 2004-08-20

        I don't have openxdk with me but i have the openxdk lib folder in the directories section of vs.net options.

        Do i also need to put it in the linker->input section under Additional Dependancies?

        I will try that.  Thanks for teh reply.

         

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