1 // splash.cxx -- draws the initial splash screen
3 // Written by Curtis Olson, started July 1998. (With a little looking
4 // at Freidemann's panel code.) :-)
6 // Copyright (C) 1997 Michele F. America - nomimarketing@mail.telepac.pt
8 // This program is free software; you can redistribute it and/or
9 // modify it under the terms of the GNU General Public License as
10 // published by the Free Software Foundation; either version 2 of the
11 // License, or (at your option) any later version.
13 // This program is distributed in the hope that it will be useful, but
14 // WITHOUT ANY WARRANTY; without even the implied warranty of
15 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 // General Public License for more details.
18 // You should have received a copy of the GNU General Public License
19 // along with this program; if not, write to the Free Software
20 // Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
29 #ifdef FG_MATH_EXCEPTION_CLASH
42 #include <Debug/logstream.hxx>
43 #include <Main/options.hxx>
44 #include <Math/fg_random.h>
45 #include <Misc/fgpath.hxx>
46 #include <Objects/texload.h>
52 static GLuint splash_texid;
53 static GLubyte *splash_texbuf;
56 // Initialize the splash screen
57 void fgSplashInit ( void ) {
60 FG_LOG( FG_GENERAL, FG_INFO, "Initializing splash screen" );
62 xglGenTextures(1, &splash_texid);
63 xglBindTexture(GL_TEXTURE_2D, splash_texid);
64 #elif GL_EXT_texture_object
65 xglGenTexturesEXT(1, &splash_texid);
66 xglBindTextureEXT(GL_TEXTURE_2D, splash_texid);
71 xglTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
72 xglTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
73 xglTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
74 xglTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
76 // load in the texture data
77 int num = (int)(fg_random() * 4.0 + 1.0);
79 sprintf(num_str, "%d", num);
81 FGPath tpath( current_options.get_fg_root() );
82 tpath.append( "Textures/Splash" );
83 tpath.concat( num_str );
84 tpath.concat( ".rgb" );
87 read_rgb_texture(tpath.c_str(), &width, &height)) == NULL )
90 FGPath fg_tpath = tpath;
91 fg_tpath.concat( ".gz" );
93 read_rgb_texture(fg_tpath.c_str(), &width, &height)) == NULL )
95 FG_LOG( FG_GENERAL, FG_ALERT,
96 "Error in loading splash screen texture " << tpath.str() );
101 xglTexImage2D( GL_TEXTURE_2D, 0, GL_RGB, width, height, 0, GL_RGB,
102 GL_UNSIGNED_BYTE, (GLvoid *)(splash_texbuf) );
106 // Update the splash screen with progress specified from 0.0 to 1.0
107 void fgSplashUpdate ( double progress ) {
108 int xmin, ymin, xmax, ymax;
112 xmin = (current_view.get_winWidth() - xsize) / 2;
115 ymin = (current_view.get_winHeight() - ysize) / 2;
118 // first clear the screen;
119 xglClearColor(0.0, 0.0, 0.0, 1.0);
120 xglClear( GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT );
123 xglMatrixMode(GL_PROJECTION);
126 gluOrtho2D(0, current_view.get_winWidth(), 0, current_view.get_winHeight());
127 xglMatrixMode(GL_MODELVIEW);
131 xglDisable(GL_DEPTH_TEST);
132 xglDisable(GL_LIGHTING);
133 xglEnable(GL_TEXTURE_2D);
134 #ifdef GL_VERSION_1_1
135 xglBindTexture(GL_TEXTURE_2D, splash_texid);
136 #elif GL_EXT_texture_object
137 xglBindTextureEXT(GL_TEXTURE_2D, splash_texid);
141 xglTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_DECAL);
143 xglBegin(GL_POLYGON);
144 xglTexCoord2f(0.0, 0.0); glVertex2f(xmin, ymin);
145 xglTexCoord2f(1.0, 0.0); glVertex2f(xmax, ymin);
146 xglTexCoord2f(1.0, 1.0); glVertex2f(xmax, ymax);
147 xglTexCoord2f(0.0, 1.0); glVertex2f(xmin, ymax);
152 xglEnable(GL_DEPTH_TEST);
153 xglEnable(GL_LIGHTING);
154 xglDisable(GL_TEXTURE_2D);
156 xglMatrixMode(GL_PROJECTION);
158 xglMatrixMode(GL_MODELVIEW);