ref: 216c1ae66ef6967d1a470a431418241c001c708b
dir: /QW/client/gl_ngraph.c/
/* 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 (); }