mirror of
https://git.code.sf.net/p/quake/newtree
synced 2024-11-22 12:11:34 +00:00
141 lines
3.2 KiB
C
141 lines
3.2 KiB
C
/*
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Copyright (C) 1996-1997 Id Software, Inc.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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// gl_ngraph.c
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#include "quakedef.h"
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extern byte *draw_chars; // 8*8 graphic characters
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int netgraphtexture; // netgraph texture
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#define NET_GRAPHHEIGHT 32
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static byte ngraph_texels[NET_GRAPHHEIGHT][NET_TIMINGS];
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static void R_LineGraph (int x, int h)
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{
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int i;
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int s;
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int color;
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s = NET_GRAPHHEIGHT;
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if (h == 10000)
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color = 0x6f; // yellow
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else if (h == 9999)
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color = 0x4f; // red
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else if (h == 9998)
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color = 0xd0; // blue
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else
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color = 0xfe; // white
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if (h>s)
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h = s;
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for (i=0 ; i<h ; i++)
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if (i & 1)
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ngraph_texels[NET_GRAPHHEIGHT - i - 1][x] = 0xff;
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else
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ngraph_texels[NET_GRAPHHEIGHT - i - 1][x] = (byte)color;
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for ( ; i<s ; i++)
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ngraph_texels[NET_GRAPHHEIGHT - i - 1][x] = (byte)0xff;
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}
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void Draw_CharToNetGraph (int x, int y, int num)
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{
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int row, col;
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byte *source;
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int drawline;
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int nx;
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row = num>>4;
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col = num&15;
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source = draw_chars + (row<<10) + (col<<3);
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for (drawline = 8; drawline; drawline--, y++)
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{
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for (nx=0 ; nx<8 ; nx++)
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if (source[nx] != 255)
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ngraph_texels[y][nx+x] = 0x60 + source[nx];
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source += 128;
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}
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}
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/*
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==============
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R_NetGraph
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==============
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*/
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void R_NetGraph (void)
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{
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int a, x, i, y;
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int lost;
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char st[80];
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unsigned ngraph_pixels[NET_GRAPHHEIGHT][NET_TIMINGS];
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x = 0;
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lost = CL_CalcNet();
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for (a=0 ; a<NET_TIMINGS ; a++)
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{
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i = (cls.netchan.outgoing_sequence-a) & NET_TIMINGSMASK;
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R_LineGraph (NET_TIMINGS-1-a, packet_latency[i]);
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}
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// now load the netgraph texture into gl and draw it
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for (y = 0; y < NET_GRAPHHEIGHT; y++)
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for (x = 0; x < NET_TIMINGS; x++)
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ngraph_pixels[y][x] = d_8to24table[ngraph_texels[y][x]];
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x = -((vid.width - 320)>>1);
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y = vid.height - sb_lines - 24 - NET_GRAPHHEIGHT - 1;
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M_DrawTextBox (x, y, NET_TIMINGS/8, NET_GRAPHHEIGHT/8 + 1);
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y += 8;
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sprintf(st, "%3i%% packet loss", lost);
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Draw_String(8, y, st);
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y += 8;
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GL_Bind(netgraphtexture);
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glTexImage2D (GL_TEXTURE_2D, 0, gl_alpha_format,
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NET_TIMINGS, NET_GRAPHHEIGHT, 0, GL_RGBA,
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GL_UNSIGNED_BYTE, ngraph_pixels);
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glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
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glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
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glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
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x = 8;
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glColor3f (1,1,1);
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glBegin (GL_QUADS);
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glTexCoord2f (0, 0);
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glVertex2f (x, y);
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glTexCoord2f (1, 0);
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glVertex2f (x+NET_TIMINGS, y);
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glTexCoord2f (1, 1);
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glVertex2f (x+NET_TIMINGS, y+NET_GRAPHHEIGHT);
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glTexCoord2f (0, 1);
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glVertex2f (x, y+NET_GRAPHHEIGHT);
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glEnd ();
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}
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