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