Source/Skybox.cpp

   1 /*
   2 Copyright (C) 2003, 2010 - Wolfire Games
   3
   4 This file is part of Lugaru.
   5
   6 Lugaru is free software; you can redistribute it and/or
   7 modify it under the terms of the GNU General Public License
   8 as published by the Free Software Foundation; either version 2
   9 of the License, or (at your option) any later version.
  10
  11 This program is distributed in the hope that it will be useful,
  12 but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  14
  15 See the GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with this program; if not, write to the Free Software
  19 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  20 */
  21
  22 #include "Skybox.h"
  23 #include "Game.h"
  24
  25 extern float viewdistance;
  26 extern int detail;
  27 extern bool trilinear;
  28 extern float blurness;
  29 extern int environment;
  30 extern TGAImageRec texture;
  31 extern bool skyboxtexture;
  32 extern float skyboxr;
  33 extern float skyboxg;
  34 extern float skyboxb;
  35 extern int tutoriallevel;
  36
  37 bool    SkyBox::load( char *ffront,char *fleft,char *fback,char *fright,char *fup,char *fdown,char *fcloud,char *freflect)
  38 {
  39 /*      static GLuint           type;
  40         unsigned char fileNamep[256];
  41 */
  42         LOGFUNC;
  43
  44         //front
  45         Game::LoadTexture(ffront, &front, true, false);
  46         //left
  47         Game::LoadTexture(fleft, &left, true, false);
  48         //back
  49         Game::LoadTexture(fback, &back, true, false);
  50         //right
  51         Game::LoadTexture(fright, &right, true, false);
  52         //up
  53         Game::LoadTexture(fup, &up, true, false);
  54         //down
  55         Game::LoadTexture(fdown, &down, true, false);
  56         //cloud
  57         Game::LoadTexture(fcloud, &cloud, true, false);
  58         //reflect
  59         Game::LoadTexture(freflect, &reflect, true, false);
  60 /*
  61         //front
  62         CopyCStringToPascal(ffront,fileNamep);
  63         upload_image( fileNamep ,0);
  64         if(1==1){
  65                 if ( texture.bpp == 24 )
  66                         type = GL_RGB;
  67                 else
  68                         type = GL_RGBA;
  69
  70                 glPixelStorei( GL_UNPACK_ALIGNMENT, 1 );
  71
  72                 if(!front)glGenTextures( 1, &front );
  73                 glTexEnvi( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE );
  74
  75                 glBindTexture( GL_TEXTURE_2D, front);
  76                 glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR );
  77                 //glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR );
  78                 if(trilinear)glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR );
  79                 if(!trilinear)glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_NEAREST );
  80
  81                 gluBuild2DMipmaps( GL_TEXTURE_2D, type, texture.sizeX, texture.sizeY, type, GL_UNSIGNED_BYTE, texture.data );
  82
  83         }
  84
  85         //left
  86         CopyCStringToPascal(fleft,fileNamep);
  87         upload_image( fileNamep ,0);
  88         if(1==1){
  89                 if ( texture.bpp == 24 )
  90                         type = GL_RGB;
  91                 else
  92                         type = GL_RGBA;
  93
  94                 glPixelStorei( GL_UNPACK_ALIGNMENT, 1 );
  95
  96                 if(!left)glGenTextures( 1, &left );
  97                 glTexEnvi( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE );
  98
  99                 glBindTexture( GL_TEXTURE_2D, left);
 100                 glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR );
 101                 //glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR );
 102                 if(trilinear)glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR );
 103                 if(!trilinear)glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_NEAREST );
 104
 105                 gluBuild2DMipmaps( GL_TEXTURE_2D, type, texture.sizeX, texture.sizeY, type, GL_UNSIGNED_BYTE, texture.data );
 106
 107         }
 108
 109         //back
 110         CopyCStringToPascal(fback,fileNamep);
 111         upload_image( fileNamep ,0);
 112         if(1==1){
 113                 if ( texture.bpp == 24 )
 114                         type = GL_RGB;
 115                 else
 116                         type = GL_RGBA;
 117
 118                 glPixelStorei( GL_UNPACK_ALIGNMENT, 1 );
 119
 120                 if(!back)glGenTextures( 1, &back );
 121                 glTexEnvi( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE );
 122
 123                 glBindTexture( GL_TEXTURE_2D, back);
 124                 glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR );
 125                 //glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR );
 126                 if(trilinear)glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR );
 127                 if(!trilinear)glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_NEAREST );
 128
 129                 gluBuild2DMipmaps( GL_TEXTURE_2D, type, texture.sizeX, texture.sizeY, type, GL_UNSIGNED_BYTE, texture.data );
 130
 131         }
 132
 133         //right
 134         CopyCStringToPascal(fright,fileNamep);
 135         upload_image( fileNamep ,0);
 136         if(1==1){
 137                 if ( texture.bpp == 24 )
 138                         type = GL_RGB;
 139                 else
 140                         type = GL_RGBA;
 141
 142                 glPixelStorei( GL_UNPACK_ALIGNMENT, 1 );
 143
 144                 if(!right)glGenTextures( 1, &right );
 145                 glTexEnvi( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE );
 146
 147                 glBindTexture( GL_TEXTURE_2D, right);
 148                 glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR );
 149                 //glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR );
 150                 if(trilinear)glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR );
 151                 if(!trilinear)glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_NEAREST );
 152
 153                 gluBuild2DMipmaps( GL_TEXTURE_2D, type, texture.sizeX, texture.sizeY, type, GL_UNSIGNED_BYTE, texture.data );
 154
 155         }
 156
 157         //up
 158         CopyCStringToPascal(fup,fileNamep);
 159         upload_image( fileNamep ,0);
 160         if(1==1){
 161                 if ( texture.bpp == 24 )
 162                         type = GL_RGB;
 163                 else
 164                         type = GL_RGBA;
 165
 166                 glPixelStorei( GL_UNPACK_ALIGNMENT, 1 );
 167
 168                 if(!up)glGenTextures( 1, &up );
 169                 glTexEnvi( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE );
 170
 171                 glBindTexture( GL_TEXTURE_2D, up);
 172                 glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR );
 173                 //glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR );
 174                 if(trilinear)glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR );
 175                 if(!trilinear)glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_NEAREST );
 176
 177                 gluBuild2DMipmaps( GL_TEXTURE_2D, type, texture.sizeX, texture.sizeY, type, GL_UNSIGNED_BYTE, texture.data );
 178
 179         }
 180
 181         //down
 182         CopyCStringToPascal(fdown,fileNamep);
 183         upload_image( fileNamep ,0);
 184         if(1==1){
 185                 if ( texture.bpp == 24 )
 186                         type = GL_RGB;
 187                 else
 188                         type = GL_RGBA;
 189
 190                 glPixelStorei( GL_UNPACK_ALIGNMENT, 1 );
 191
 192                 if(!down)glGenTextures( 1, &down );
 193                 glTexEnvi( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE );
 194
 195                 glBindTexture( GL_TEXTURE_2D, down);
 196                 glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR );
 197                 //glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR );
 198                 if(trilinear)glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR );
 199                 if(!trilinear)glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_NEAREST );
 200
 201                 gluBuild2DMipmaps( GL_TEXTURE_2D, type, texture.sizeX, texture.sizeY, type, GL_UNSIGNED_BYTE, texture.data );
 202
 203         }
 204
 205         //cloud
 206         CopyCStringToPascal(fcloud,fileNamep);
 207         upload_image( fileNamep ,0);
 208         if(1==1){
 209                 if ( texture.bpp == 24 )
 210                         type = GL_RGB;
 211                 else
 212                         type = GL_RGBA;
 213
 214                 glPixelStorei( GL_UNPACK_ALIGNMENT, 1 );
 215
 216                 if(!cloud)glGenTextures( 1, &cloud );
 217                 glTexEnvi( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE );
 218
 219                 glBindTexture( GL_TEXTURE_2D, cloud);
 220                 glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR );
 221                 //glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR );
 222                 if(trilinear)glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR );
 223                 if(!trilinear)glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_NEAREST );
 224
 225                 gluBuild2DMipmaps( GL_TEXTURE_2D, type, texture.sizeX, texture.sizeY, type, GL_UNSIGNED_BYTE, texture.data );
 226
 227         }
 228
 229         //up
 230         CopyCStringToPascal(freflect,fileNamep);
 231         upload_image( fileNamep ,0);
 232         if(1==1){
 233                 if ( texture.bpp == 24 )
 234                         type = GL_RGB;
 235                 else
 236                         type = GL_RGBA;
 237
 238                 glPixelStorei( GL_UNPACK_ALIGNMENT, 1 );
 239
 240                 if(!reflect)glGenTextures( 1, &reflect );
 241                 glTexEnvi( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE );
 242
 243                 glBindTexture( GL_TEXTURE_2D, reflect);
 244                 glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR );
 245                 //glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR );
 246                 if(trilinear)glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR );
 247                 if(!trilinear)glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_NEAREST );
 248
 249                 gluBuild2DMipmaps( GL_TEXTURE_2D, type, texture.sizeX, texture.sizeY, type, GL_UNSIGNED_BYTE, texture.data );
 250
 251         }
 252 */
 253         return true;
 254 }
 255
 256 void    SkyBox::draw()
 257 {
 258         static float size=viewdistance/4;
 259         glPushMatrix();
 260         static GLfloat M[16];
 261         glGetFloatv(GL_MODELVIEW_MATRIX,M);
 262         M[12]=0;
 263         M[13]=0;
 264         M[14]=0;
 265         glLoadMatrixf(M);
 266         //if(environment==2)glTranslatef(0,blurness*viewdistance/1000,0);
 267         if(environment==2)glScalef(1+blurness/1000,1,1+blurness/1000);
 268         if(environment!=2)glColor3f(.85*skyboxr,.85*skyboxg,.95*skyboxb);
 269         else glColor3f(1*skyboxr,.95*skyboxg,.95*skyboxb);
 270
 271         if(!skyboxtexture){
 272                 glDisable(GL_TEXTURE_2D);
 273                 glColor3f(skyboxr*.8,skyboxg*.8,skyboxb*.8);
 274         }
 275         glDepthMask(0);
 276         glDisable(GL_CULL_FACE);
 277         glEnable(GL_BLEND);
 278         glDisable(GL_LIGHTING);
 279         //              glActiveTextureARB(GL_TEXTURE0_ARB);
 280         if(skyboxtexture)glEnable(GL_TEXTURE_2D);
 281         glTexEnvi( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE );
 282         glBindTexture(GL_TEXTURE_2D, front);
 283         glTexParameterf( GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE );
 284         glTexParameterf( GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE );
 285         glBegin(GL_QUADS);
 286         glNormal3f( 0.0f, 0.0f, -1);
 287         glTexCoord2f(0, 0); glVertex3f(-size, -size,  size);
 288         glTexCoord2f(1, 0); glVertex3f( size, -size,  size);
 289         glTexCoord2f(1, 1); glVertex3f( size,  size,  size);
 290         glTexCoord2f(0, 1); glVertex3f(-size,  size,  size);
 291         glEnd();
 292         glBindTexture(GL_TEXTURE_2D, back);
 293         glTexParameterf( GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE );
 294         glTexParameterf( GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE );
 295         glBegin(GL_QUADS);
 296         glNormal3f( 0.0f, 0.0f, 1);
 297         glTexCoord2f(1, 0); glVertex3f(-size, -size, -size);
 298         glTexCoord2f(1, 1); glVertex3f(-size,  size, -size);
 299         glTexCoord2f(0, 1); glVertex3f( size,  size, -size);
 300         glTexCoord2f(0, 0); glVertex3f( size, -size, -size);
 301         glEnd();
 302         glBindTexture(GL_TEXTURE_2D, up);
 303         glTexParameterf( GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE );
 304         glTexParameterf( GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE );
 305         glBegin(GL_QUADS);
 306         glNormal3f( 0.0f, -1.0f, 0);
 307         glTexCoord2f(0, 1); glVertex3f(-size,  size, -size);
 308         glTexCoord2f(0, 0); glVertex3f(-size,  size,  size);
 309         glTexCoord2f(1, 0); glVertex3f( size,  size,  size);
 310         glTexCoord2f(1, 1); glVertex3f( size,  size, -size);
 311         glEnd();
 312         //if(detail!=0){
 313         glBindTexture(GL_TEXTURE_2D, down);
 314         glTexParameterf( GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE );
 315         glTexParameterf( GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE );
 316         glBegin(GL_QUADS);
 317         glNormal3f( 0.0f, 1.0f, 0);
 318
 319         glTexCoord2f(0, 0); glVertex3f(-size, -size, -size);
 320         glTexCoord2f(1, 0); glVertex3f( size, -size, -size);
 321         glTexCoord2f(1, 1); glVertex3f( size, -size,  size);
 322         glTexCoord2f(0, 1); glVertex3f(-size, -size,  size);
 323         glEnd();
 324         //}
 325         glBindTexture(GL_TEXTURE_2D, right);
 326         glTexParameterf( GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE );
 327         glTexParameterf( GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE );
 328         glBegin(GL_QUADS);
 329         glNormal3f( -1.0f, 0.0f, 0);
 330         glTexCoord2f(1, 0); glVertex3f( size, -size, -size);
 331         glTexCoord2f(1, 1); glVertex3f( size,  size, -size);
 332         glTexCoord2f(0, 1); glVertex3f( size,  size,  size);
 333         glTexCoord2f(0, 0); glVertex3f( size, -size,  size);
 334         glEnd();
 335         glBindTexture(GL_TEXTURE_2D, left);
 336         glTexParameterf( GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE );
 337         glTexParameterf( GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE );
 338         glBegin(GL_QUADS);
 339         glNormal3f( 1.0f, 0.0f, 0);
 340         glTexCoord2f(0, 0); glVertex3f(-size, -size, -size);
 341         glTexCoord2f(1, 0); glVertex3f(-size, -size,  size);
 342         glTexCoord2f(1, 1); glVertex3f(-size,  size,  size);
 343         glTexCoord2f(0, 1); glVertex3f(-size,  size, -size);
 344         glEnd();
 345         /*
 346         glEnable(GL_BLEND);
 347         glColor4f(1,1,1,1);
 348         glBindTexture(GL_TEXTURE_2D, cloud);
 349         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
 350         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
 351         glBegin(GL_QUADS);
 352         glNormal3f( 0.0f, -1.0f, 0);
 353         glTexCoord2f(0,                                 (1+cloudmove)*30);      glVertex3f(-size,       size/200, -size);
 354         glTexCoord2f(0,                                 0);                             glVertex3f(-size,       size/200,  size);
 355         glTexCoord2f((1+cloudmove)*30,  0);                             glVertex3f( size,       size/200,  size);
 356         glTexCoord2f((1+cloudmove)*30,  (1+cloudmove)*30);      glVertex3f( size,       size/200, -size);
 357         glEnd();
 358         glDisable(GL_BLEND);*/
 359         glEnable(GL_CULL_FACE);
 360         glDepthMask(1);
 361         glPopMatrix();
 362 }
 363
 364 SkyBox::SkyBox()
 365 {
 366         front = 0,left = 0,back = 0,right = 0,up = 0,down = 0,cloud = 0,reflect = 0;
 367         cloudmove = 0;
 368 }
 369 SkyBox::~SkyBox()
 370 {
 371         if (front) glDeleteTextures( 1, &front );
 372         if (left) glDeleteTextures( 1, &left );
 373         if (back) glDeleteTextures( 1, &back );
 374         if (right) glDeleteTextures( 1, &right );
 375         if (up) glDeleteTextures( 1, &up );
 376         if (down) glDeleteTextures( 1, &down );
 377         if (cloud) glDeleteTextures( 1, &cloud );
 378         if (reflect) glDeleteTextures( 1, &reflect );
 379 };
 380