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{ From VGAlib, changed for svgalib }
{ partially copyrighted (C) 1993 by Hartmut Schirmer }
Program vgatest;
uses svgalib,strings;
Var
line : array [0..2048 * 3-1] of byte;
Procedure testmode (Mode : Longint);
var
xmax, ymax, i, x, y, yw, ys, c : longint;
modeinfo : Pvga_modeinfo;
begin
vga_setmode(mode);
modeinfo := vga_getmodeinfo(mode);
Writeln ('Width: ',modeinfo^.width,' Height: ',modeinfo^.height,
' Colors: ',modeinfo^.colors);
Write ('DisplayStartRange: ',modeinfo^.startaddressrange,
' Maxpixels: ',modeinfo^.maxpixels,' Blit: ');
if modeinfo^.haveblit<>0 then
writeln ('YES') else writeln ('NO');
vga_screenoff();
xmax := vga_getxdim - 1;
ymax := vga_getydim - 1;
vga_setcolor(vga_white);
vga_drawline(0, 0, xmax, 0);
vga_drawline(xmax, 0, xmax, ymax);
vga_drawline(xmax, ymax, 0, ymax);
vga_drawline(0, ymax, 0, 0);
for i := 0 to 25 do
begin
vga_setegacolor(i);
vga_drawline(10 + i * 5, 10, 90 + i * 5, 90);
end;
for i := 0 to 25 do
begin
vga_setegacolor(i);
vga_drawline(90 + i * 5, 10, 10 + i * 5, 90);
end;
vga_screenon();
ys := 100;
yw := (ymax - 100) div 4;
Case vga_getcolors of
256:
begin
for i := 0 to 60 do
begin
c := (i * 64) div 60;
vga_setpalette(i + 16, c, c, c);
vga_setpalette(i + 16 + 60, c, 0, 0);
vga_setpalette(i + 16 + (2 * 60), 0, c, 0);
vga_setpalette(i + 16 + (3 * 60), 0, 0, c);
end;
line[0] := 15;
line[xmax] := 15;
line[1] := 0;
line[xmax - 1] := 0;
for x := 2 to xmax - 1 do
line[x] := (((x - 2) * 60) div (xmax - 3)) + 16;
for y := ys to (ys + yw-1) do { gray }
vga_drawscanline(y, line);
for x := 2 to xmax - 1 do
inc(line[x],60);
inc(ys,yw);
for y := ys to ys + yw-1 do
vga_drawscanline(y, line);
for x := 2 to xmax - 1 do
inc(line[x],60);
inc(ys,yw);
for y := ys to ys + yw-1 do
vga_drawscanline(y, line);
for x := 2 to xmax - 1 do
inc(line[x],60);
inc(ys,yw);
for y := ys to ys + yw-1 do
vga_drawscanline(y, line);
end;
1 shl 15,
1 shl 16,
1 shl 24:
begin
for x := 2 to xmax - 1 do
begin
c := ((x - 2) * 256) div (xmax - 3);
y := ys;
vga_setrgbcolor(c, c, c);
vga_drawline(x, y, x, y + yw - 1);
inc (y,yw);
vga_setrgbcolor(c, 0, 0);
vga_drawline(x, y, x, y + yw - 1);
inc(y, yw);
vga_setrgbcolor(0, c, 0);
vga_drawline(x, y, x, y + yw - 1);
inc (y,yw);
vga_setrgbcolor(0, 0, c);
vga_drawline(x, y, x, y + yw - 1);
end;
for x := 0 to 63 do
for y := 0 to 63 do
begin
vga_setrgbcolor(x * 4 + 3, y * 4 + 3, 0);
vga_drawpixel(xmax div 2 - 160 + x, y + ymax div 2 - 80);
vga_setrgbcolor(x * 4 + 3, 0, y * 4 + 3);
vga_drawpixel(xmax div 2 - 32 + x, y + ymax div 2 - 80);
vga_setrgbcolor(0, x * 4 + 3, y * 4 + 3);
vga_drawpixel(xmax div 2 + 160 - 64 + x, y + ymax div 2 - 80);
vga_setrgbcolor(x * 4 + 3, y * 4 + 3, 255);
vga_drawpixel(xmax div 2 - 160 + x, y + ymax div 2 + 16);
vga_setrgbcolor(x * 4 + 3, 255, y * 4 + 3);
vga_drawpixel(xmax div 2 - 32 + x, y + ymax div 2 + 16);
vga_setrgbcolor(255, x * 4 + 3, y * 4 + 3);
vga_drawpixel(xmax div 2 + 160 - 64 + x, y + ymax div 2 + 16);
end;
end;
else
begin
if (vga_getcolors = 16) then
begin
for i := 0 to xmax - 2 do
line[i] := (i + 2) mod 16;
line[0] := 15;
line[xmax] := 15;
line[1] := 0;
line[xmax - 1] := 0;
end;
if (vga_getcolors = 2) then
begin
for i := 0 to xmax do
line[i] := $11;
line[0] := $91;
end;
for i := 100 to ymax - 1 do
vga_drawscanline(i, line);
end;
end;
readln;
vga_setmode(GTEXT);
end;
Var
i,highest,mode : longint;
info : pvga_modeinfo;
expl : pchar;
Const cols : pchar = NiL;
begin
getmem (expl,100);
vga_init(); { Initialize. }
mode := vga_getdefaultmode();
if (mode=-1) then
begin
Writeln ('Choose one of the following video modes:');
highest := 0;
for i := 1 to GLASTMODE do
if vga_hasmode(i) then
begin
expl[0]:=#0;
info := vga_getmodeinfo(i);
Case info^.colors of
2: begin
cols := '2';
strcopy(expl, '1 bitplane, monochrome');
end;
16: begin
cols := '16';
strcopy(expl, '4 bitplanes');
end;
256: begin
if i=G320x200x256 then
strcopy(pchar(@expl[0]), 'packed-pixel')
else if (i=G320x240x256) or
((i=G320x400x256) or
(i=G360x480x256)) then
strcopy(expl, 'Mode X')
else
strcopy(expl,'packed-pixel,banked');
end;
1 shl 15:
begin
cols := '32K';
strcopy(expl, '5-5-5 RGB,blue at LSB, banked');
end;
1 shl 16:
begin
cols := '64K';
strcopy(expl, '5-6-5 RGB,blue at LSB,banked');
end;
1 shl 24:
begin
cols := '16M';
if info^.bytesperpixel = 3 then
if (info^.flags and RGB_MISORDERED)=0 then
strcopy(expl, '8-8-8 BGR, red byte first, banked')
else
strcopy(expl, '8-8-8 RGB, blue byte first, banked')
else if (info^.flags and RGB_MISORDERED)=0 then
strcopy(expl, '8-8-8 RGBX, 32-bit pixels, X byte first, banked')
else
strcopy(expl, '8-8-8 XRGB, 32-bit pixels, blue byte first, banked')
end;
end;
if (info^.flags and IS_INTERLACED)=0 then
begin
if (expl[0] <> #0) then
strcat(expl, ',');
strcat(expl, 'interlaced');
end;
if (info^.flags and IS_DYNAMICMODE)=0 then
begin
if (expl[0] <> #0) then
strcat(expl, ',');
strcat(expl, 'dynamically loaded');
end;
highest := i;
Write (i,': ', info^.width,'x', info^.height,' ');
if (cols = NiL) then
write (info^.colors)
else
write (cols);
write (' colors ');
if (expl[0]<>#0) then
write('(', expl,')');
writeln;
end;
Write ('Enter mode number (1-', highest,') : ');
Readln (mode);
if (mode < 1) or (mode > GLASTMODE) then
begin
Writeln ('Error: Mode number out of range');
halt(1);
end;
end;
if (vga_hasmode(mode)) then
testmode(mode)
else
begin
Writeln ('Error: Video mode not supported by driver.');
Halt(1);
end;
end.
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