77 lines
2.1 KiB
C
77 lines
2.1 KiB
C
/*
|
|
THE COMPUTER CODE CONTAINED HEREIN IS THE SOLE PROPERTY OF PARALLAX
|
|
SOFTWARE CORPORATION ("PARALLAX"). PARALLAX, IN DISTRIBUTING THE CODE TO
|
|
END-USERS, AND SUBJECT TO ALL OF THE TERMS AND CONDITIONS HEREIN, GRANTS A
|
|
ROYALTY-FREE, PERPETUAL LICENSE TO SUCH END-USERS FOR USE BY SUCH END-USERS
|
|
IN USING, DISPLAYING, AND CREATING DERIVATIVE WORKS THEREOF, SO LONG AS
|
|
SUCH USE, DISPLAY OR CREATION IS FOR NON-COMMERCIAL, ROYALTY OR REVENUE
|
|
FREE PURPOSES. IN NO EVENT SHALL THE END-USER USE THE COMPUTER CODE
|
|
CONTAINED HEREIN FOR REVENUE-BEARING PURPOSES. THE END-USER UNDERSTANDS
|
|
AND AGREES TO THE TERMS HEREIN AND ACCEPTS THE SAME BY USE OF THIS FILE.
|
|
COPYRIGHT 1993-1998 PARALLAX SOFTWARE CORPORATION. ALL RIGHTS RESERVED.
|
|
*/
|
|
|
|
#include <conf.h>
|
|
#include "u_mem.h"
|
|
|
|
#include "gr.h"
|
|
#include "grdef.h"
|
|
#ifdef __ENV_DJGPP__
|
|
#include "modex.h"
|
|
#include "vesa.h"
|
|
#endif
|
|
|
|
unsigned char gr_ugpixel( grs_bitmap * bitmap, int x, int y )
|
|
{
|
|
#ifdef __ENV_DJGPP__
|
|
switch(bitmap->bm_type)
|
|
{
|
|
case BM_LINEAR:
|
|
#endif
|
|
return bitmap->bm_data[ bitmap->bm_rowsize*y + x ];
|
|
#ifdef __ENV_DJGPP__
|
|
case BM_MODEX:
|
|
x += bitmap->bm_x;
|
|
y += bitmap->bm_y;
|
|
gr_modex_setplane( x & 3 );
|
|
return gr_video_memory[(bitmap->bm_rowsize * y) + (x/4)];
|
|
case BM_SVGA:
|
|
{
|
|
unsigned int offset;
|
|
offset = (unsigned int)bitmap->bm_data + (unsigned int)bitmap->bm_rowsize * y + x;
|
|
gr_vesa_setpage( offset >> 16 );
|
|
return gr_video_memory[offset & 0xFFFF];
|
|
}
|
|
}
|
|
return 0;
|
|
#endif
|
|
}
|
|
|
|
unsigned char gr_gpixel( grs_bitmap * bitmap, int x, int y )
|
|
{
|
|
if ((x<0) || (y<0) || (x>=bitmap->bm_w) || (y>=bitmap->bm_h)) return 0;
|
|
#ifdef __ENV_DJGPP__
|
|
switch(bitmap->bm_type)
|
|
{
|
|
case BM_LINEAR:
|
|
#endif
|
|
return bitmap->bm_data[ bitmap->bm_rowsize*y + x ];
|
|
#ifdef __ENV_DJGPP__
|
|
case BM_MODEX:
|
|
x += bitmap->bm_x;
|
|
y += bitmap->bm_y;
|
|
gr_modex_setplane( x & 3 );
|
|
return gr_video_memory[(bitmap->bm_rowsize * y) + (x/4)];
|
|
case BM_SVGA:
|
|
{
|
|
unsigned int offset;
|
|
offset = (unsigned int)bitmap->bm_data + (unsigned int)bitmap->bm_rowsize * y + x;
|
|
gr_vesa_setpage( offset >> 16 );
|
|
return gr_video_memory[offset & 0xFFFF];
|
|
}
|
|
}
|
|
return 0;
|
|
#endif
|
|
}
|
|
|