DS>I have been doing some full screen graphics programming lately and can not
DS>seem to get VioGetPhysBuf to work.  I expected it to be the
DS>easiest part, but it eludes me even though all the 'tough'
DS>parts are working flawlessly.

Here's some code I wrote based on someone else's code for doing full
screen 320x200 graphics, it is loosely modeled after the Borland
graphics interface. It compiles under BCOS/2 but you need to make a
change in BCOS2\INCLUDE\BSESUB.H

APIRET16  APIENTRY16    VioGetState (PVOID16 pState, HVIO hvio);/*ROB
PVOID->PVOID16*/
APIRET16  APIENTRY16    VioSetState (PVOID16 pState, HVIO hvio);/*ROB
PVOID->PVOID16*/

Good luck.

Rob.


// OS2graph.h
#ifndef OS2GRAPH
#define OS2GRAPH

#define DetectVGA256 0
#define DETECT 0
#define grOk 0


int installuserdriver(char *fn, int driver);
int initgraph(int *gdriver, int *gmode, char *path);
int graphresult(void);
char *grapherrormsg(int msg);
int closegraph(void);
void VGASetAllPalette(char *palette, int size);
int lockgraph(void);
int unlockgraph(void);
int graphblit(void *buf, int width, int height);


#endif


// OS2graph.cpp

#include 
#include 
#include 

#define INCL_BASE
#include 

#include "os2graph.h"

#define SEG16 _far16

#define SCN_W 320
#define SCN_H 200
VIOMODEINFO vmiOld;
int scn_w, scn_h;
unsigned char palette[0x100][3];
int npalette;
int data_depth;
unsigned char *VGARAMptr;
int debug=0;

int installuserdriver(char *fn, int driver) {
return(grOk);
};


int initgraph(int *gdriver, int *gmode, char *path) {
  VIOMODEINFO vmi;
  VIOPHYSBUF phys;
  VIOOVERSCAN vioos;
  unsigned char SEG16 * ptr1616;
  unsigned char status;

  vmi.cb     = 12;
  vmi.fbType = 3;
  vmi.color  = 8;
  vmi.col    = 40;
  vmi.row    = 25;
  vmi.hres   = SCN_W;
  vmi.vres   = SCN_H;

  vmiOld.cb=34;
  VioGetMode(&vmiOld, (HVIO) 0);
  if ( VioSetMode(&vmi, (HVIO) 0) )
  {
  debug=1; return(grOk);
          fprintf(stderr, "Unable to enter 320x200 at 8pp graphics
mode\n");
          exit(1);
  }

  phys.cb = 0x10000;
  phys.pBuf = (unsigned char *) 0xa0000;
  if ( VioGetPhysBuf(&phys, 0) )
  {
  debug=1; return(grOk);
          fprintf(stderr, "Unable to access to physical graphics
screen\n");
          exit(1);
  }

  ptr1616 = (unsigned char SEG16 *) ( phys.asel[0] << 16 );
  VGARAMptr = (unsigned char *) ptr1616;
  VioScrLock(VP_WAIT, &status, (HVIO) 0);

  /* Set screen to colour 0, which will get set to black */
  memset(VGARAMptr, 0, SCN_W*SCN_H);

  /* Set all palette entrys to black */
  memset(palette, 0, sizeof(palette));
  VGASetAllPalette((char *) palette, 0x100);

  /* Set border colour to colour 0 */
  vioos.cb = sizeof(VIOOVERSCAN);
  vioos.type = 1; /* Apparently no #define for this */
  vioos.color = 0;
  VioSetState(&vioos, (HVIO) 0);
  VioScrUnLock((HVIO) 0);
  return(grOk);
};

int graphresult(void) {
return(grOk);
};

char *grapherrormsg(int msg) {
return(NULL);
};

int closegraph(void) {
if (debug) return(grOk);
VioSetMode(&vmiOld, (HVIO) 0);
return(grOk);
};


void VGASetAllPalette(char *palette, int size) {
if (debug) return;
  VIOCOLORREG viocreg;
>>> Continued to next message
___
 X SLMR 2.1a X recursive (ree 'cuhr siv) adj. - see recursive.

--- Maximus/2 2.01wb