Initial. Don't... just don't ask.

2011-02-24 00:22:00 -08:00 · 2011-02-24 00:22:00 -08:00 · 00bae13bba
commit 00bae13bba
586 changed files with 129057 additions and 0 deletions
--- a/demos/lineart.c
+++ b/demos/lineart.c
@ -0,0 +1,132 @@
+/*  A program to test any mode for linear.  Default mode is G640x480x256 = 10
+**  or parameters may be used giving modes as integers.
+** linp [mode mode ...]
+**                          Don Secrest Oct. 1998
+*/
+
+#include <vga.h>
+#include <string.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <ctype.h>
+
+static void screen(int mode)
+{
+  int bpp,bott,endp,linlen,i,j,bii,col,p;
+  vga_modeinfo *minf;
+  unsigned char *vbuf;
+  int mem;
+  
+  if(mode == 0)
+    {
+      printf("Usage:lineart [mode mode ...]\n\nwhere mode is an integer.\n");
+      return;
+    }
+  if(! vga_hasmode(mode)) {
+    printf("Invalid mode %d\n",mode);
+    return;
+  }
+  vga_setmode(mode);
+  minf = vga_getmodeinfo(mode);
+  if(! (minf->flags & CAPABLE_LINEAR)){
+    vga_setmode(TEXT);
+    printf("The mode %d is not capable of linear\n",mode);
+    return;
+  }
+  vga_setpage(0);
+  if(vga_setlinearaddressing() == -1) {
+    vga_setmode(TEXT);
+    printf("Could not set linear addressing for mode %d\n",mode);
+    return;
+  }
+  bpp = minf->bytesperpixel;
+  linlen = minf->width*bpp;
+  bott = linlen*17;            /* pointer 17 pixels wide. */
+  endp = linlen*minf->height;
+  mem = minf->linewidth*minf->height;
+
+  /* Do random pixels */
+  vbuf = vga_getgraphmem();
+  printf("Memory mapped to %08x. Mode = %d.\n",(int) vbuf,mode);
+  memset(vbuf,0,mem);    /* Clear out 2 megabytes of memory, */
+  for(i = 0;i < 100000;i++)
+    {
+      p = rand() % mem-2;
+      *(vbuf + p) = rand() & 0xff;
+      if(bpp > 1)
+	*(vbuf + p + 1) = rand() & 0xff;
+      if(bpp == 3) 
+	*(vbuf + p + 2) = rand() & 0xff;
+    }
+
+  /* Place marker at top left and bottem right. */
+  for(i = 0;i < 44;i += bpp) {
+    *(vbuf + i) = 0x60;
+    *(vbuf + bott + i) = 0x60;
+    *(vbuf + endp - i) = 0x60;
+    bii = endp -1 -bott;
+    *(vbuf + bii -i) = 0x60;
+    if(bpp > 1) {
+      *(vbuf + i + 1) = 0x60;
+      *(vbuf + i + 1 + bott) = 0x60;
+      *(vbuf - i - 1 + endp) = 0x60;
+      *(vbuf - i - 1 + bii) = 0x60;
+    }
+    if(bpp == 3) {
+            *(vbuf + i + 2) = 0x60;
+	    *(vbuf + i + 2 + bott) = 0x60;
+	    *(vbuf - i - 2 + endp) = 0x60;
+	    *(vbuf - i - 2 + bii) = 0x60;
+    }
+    col = (i == 0 || i >= 42)? 0x60:0;
+    for(j = 1;j < 17;j++) {
+      *(vbuf + i + linlen*j) = col;
+      *(vbuf - i + endp -1 - linlen*j) = col;
+      if(bpp > 1) {
+	*(vbuf + i + 1 + linlen*j) = col;
+	*(vbuf - i - 2 + endp - linlen*j) = col;
+      }
+      if(bpp == 3) {
+	*(vbuf + i + 2 + linlen*j) = col;
+	*(vbuf - i - 3 + endp - linlen*j) = col;
+      }
+    }
+  }
+  for(i = 5;i < 12;i += bpp)
+    for(j = 4;j < 12;j++) {
+            *(vbuf + i + linlen*j) = 0x3f;
+	    *(vbuf + endp - i - bpp - linlen*j) = 0x3f;
+    }
+  getchar();   /* Wait for a key punch */
+}
+
+int
+main(int argc,char *argv[])
+{
+  int mode,c;
+
+  vga_init();
+  c=1;
+  if(argc == 1)
+    screen(10);     /* G640x480x256 */
+  else
+    c = 0;
+  while(argc > 1)
+    {
+      argc--;
+      c++;
+      if(isdigit(*argv[c]))
+	mode = atoi(argv[c]);
+      else if(*argv[c] == 'G')
+	mode = vga_getmodenumber(argv[c]);
+      else
+	{
+	  printf("Unknown mode %s\n",argv[c]);
+	  continue;
+	}
+      screen(mode);
+    }
+  vga_setmode(TEXT);
+  return 0;
+}
+