prj/tech/libsrc/dev2d/fl8mx.c

   1 /*
   2  * $Source: s:/prj/tech/libsrc/dev2d/RCS/fl8mx.c $
   3  * $Revision: 1.1 $
   4  * $Author: KEVIN $
   5  * $Date: 1996/04/10 15:34:58 $
   6  *
   7  * Routines for drawing flat8 bitmaps onto a mode X canvas.
   8  *
   9  * This file is part of the dev2d library.
  10  *
  11  */
  12
  13 #include <grd.h>
  14 #include <mxlatch.h>
  15
  16 void flat8_modex_trans_ubitmap (grs_bitmap *bm, int x, int y)
  17 {
  18    int i,j,k;
  19    uchar *src, *dst;
  20    uchar *s, *d;
  21    uchar *p;
  22    short w, h;
  23    uchar save_wlatch;
  24
  25    wlatch_start(save_wlatch);
  26
  27    w = bm->w;
  28    h = bm->h;
  29    if ((h<=0)||(w<=0)) return;
  30    p = grd_bm.bits+grd_bm.row*y;
  31    for (i=0; i<4; i++) {
  32       int z = i + bm->align;
  33       src=bm->bits+(z>>2);
  34       dst=p+x;
  35       modex_force_wlatch(1<<(z&3));
  36       for (j=(w+3)>>2; j>0; j--) {
  37          s=src; d=dst;
  38          for (k=0; k<h; k++) {
  39             if (*s) *d=*s;
  40             s+=bm->row;
  41             d+=grd_bm.row;
  42          }
  43          src++;
  44          dst+=4;
  45       }
  46       x++;
  47       if (--w==0) break;
  48    }
  49
  50    wlatch_restore(save_wlatch);
  51 }
  52
  53 void flat8_modex_opaque_ubitmap (grs_bitmap *bm, int x, int y)
  54 {
  55    int i,j,k;
  56    uchar *src, *dst;
  57    uchar *s, *d;
  58    uchar *p;
  59    short w, h;
  60    uchar save_wlatch;
  61
  62    wlatch_start(save_wlatch);
  63
  64    w = bm->w;
  65    h = bm->h;
  66    if ((h<=0)||(w<=0)) return;
  67    p = grd_bm.bits+grd_bm.row*y;
  68    for (i=0; i<4; i++) {
  69       int z = i + bm->align;
  70       src=bm->bits+(z>>2);
  71       dst=p+x;
  72       modex_force_wlatch(1<<(z&3));
  73       for (j=(w+3)>>2; j>0; j--) {
  74          s=src; d=dst;
  75          for (k=0; k<h; k++) {
  76             *d=*s;
  77             s+=bm->row;
  78             d+=grd_bm.row;
  79          }
  80          src++;
  81          dst+=4;
  82       }
  83       x++;
  84       if (--w==0) break;
  85    }
  86
  87    wlatch_restore(save_wlatch);
  88 }