Source/TGALoader.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 /**> HEADER FILES <**/
  23 #include "Game.h"
  24 #include "TGALoader.h"
  25
  26 extern float texdetail;
  27 extern TGAImageRec texture;
  28 extern short vRefNum;
  29 extern long dirID;
  30 extern bool visibleloading;
  31
  32 extern bool LoadImage(const char * fname, TGAImageRec & tex);
  33 /********************> LoadTGA() <*****/
  34 bool upload_image(const unsigned char* filePath, bool hasalpha)
  35 {
  36         if(visibleloading)
  37                 Game::LoadingScreen();
  38
  39 #if !PLATFORM_MACOSX
  40
  41         // for Windows, just use TGA loader for now
  42         char fileName[256];
  43         CopyPascalStringToC( filePath, fileName);
  44 /*
  45         // change extension to .TGA
  46         int len = strlen( fileName);
  47         if (len > 3)
  48         {
  49                 fileName[ len - 3] = 't';
  50                 fileName[ len - 2] = 'g';
  51                 fileName[ len - 1] = 'a';
  52         }
  53 */
  54 //      return (LoadTGA( fileName) != NULL);
  55         return (LoadImage(fileName, texture));
  56
  57 #else
  58
  59         OSStatus err;
  60         ComponentResult cr;
  61
  62         /*FSRef fsref;
  63         Boolean isdir;
  64         err = FSPathMakeRef((const UInt8*)filePath, &fsref, &isdir);
  65         if(err)return;
  66
  67         FSSpec fsspec;
  68         err = FSGetCatalogInfo(&fsref, kFSCatInfoNone, NULL, NULL, &fsspec, NULL);
  69         if(err)return;
  70         */
  71
  72         //Boolean isdir;
  73         FSSpec fsspec;
  74         //err = FSMakeFSSpec (0, 0, (const unsigned char*)filePath, &fsspec);
  75         err = FSMakeFSSpec (0, 0, filePath, &fsspec);
  76         //err=FSPathMakeFSSpec((const UInt8*)filePath,&fsspec,&isdir);*/
  77         if(err)return;
  78
  79         GraphicsImportComponent gi;
  80         err = GetGraphicsImporterForFile(&fsspec, &gi);
  81         if(err)return;
  82
  83         Rect natbounds;
  84         cr = GraphicsImportGetNaturalBounds(gi, &natbounds);
  85
  86         //~ size_t buffersize = 4 * natbounds.bottom * natbounds.right;
  87         //void* buf = malloc(buffersize);
  88         texture.sizeX=natbounds.right;
  89         texture.sizeY=natbounds.bottom;
  90         /*if(hasalpha)*/texture.bpp = 32;
  91         //if(!hasalpha)texture.bpp = 24;
  92
  93         GWorldPtr gw;
  94         err = QTNewGWorldFromPtr(&gw, k32ARGBPixelFormat, &natbounds, NULL, NULL,
  95                 0, texture.data, 4 * natbounds.right);
  96         if(err)return;
  97
  98         cr = GraphicsImportSetGWorld(gi, gw, NULL);
  99
 100         natbounds.top = natbounds.bottom;
 101         natbounds.bottom = 0;
 102
 103         cr = GraphicsImportSetBoundsRect(gi, &natbounds);
 104
 105         cr = GraphicsImportDraw(gi);
 106
 107         err = CloseComponent(gi);
 108         if(err)return;
 109
 110         /*glTexImage2D(textureTarget, 0, GL_RGBA, natbounds.right, natbounds.top, 0,
 111         GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV, buf);
 112         */
 113
 114         //free(buf);
 115         DisposeGWorld(gw);
 116
 117         // Loop Through The Image Data
 118         GLuint                  imageSize;                                                                      // Used To Store The Image Size When Setting Aside Ram
 119         GLuint                  temp;                                                                           // Temporary Variable
 120         GLuint                  bytesPerPixel;                                                                          // Temporary Variable
 121         bytesPerPixel=texture.bpp/8;
 122         imageSize = texture.sizeX * texture.sizeY * bytesPerPixel;
 123         //~ int alltrans=10;
 124
 125         for( GLuint i = 0; i < int( imageSize ); i += 4 )
 126         {
 127                 // Swaps The 1st And 3rd Bytes ('R'ed and 'B'lue)
 128                 temp = texture.data[i];                                 // Temporarily Store The Value At Image Data 'i'
 129                 texture.data[i] = texture.data[i + 1];  // Set The 1st Byte To The Value Of The 3rd Byte
 130                 texture.data[i + 1] = texture.data[i + 2];                              // Set The 3rd Byte To The Value In 'temp' (1st Byte Value)
 131                 texture.data[i + 2] = texture.data[i + 3];
 132                 texture.data[i + 3] = temp;
 133         }
 134
 135         //~ int tempplace;
 136         //~ tempplace=0;
 137         if(!hasalpha){
 138                 for( GLuint i = 0; i < int( imageSize ); i += 4 )
 139                 {
 140                         texture.data[i + 3] = 255;
 141                         /*texture.data[tempplace] = texture.data[i];    // Set The 1st Byte To The Value Of The 3rd Byte
 142                         texture.data[tempplace + 1] = texture.data[i + 1];                              // Set The 3rd Byte To The Value In 'temp' (1st Byte Value)
 143                         texture.data[tempplace + 2] = texture.data[i + 2];
 144                         tempplace+=3;*/
 145                 }
 146         }
 147
 148         if(texdetail>1){
 149                 int which=0;
 150                 float temp;
 151                 float howmany;
 152                 for( GLuint k = 0; k < int( imageSize); k += bytesPerPixel*texture.sizeX*texdetail )
 153                 {
 154                         for( GLuint i = 0; i < int( imageSize/texture.sizeY ); i += bytesPerPixel*texdetail )
 155                         {
 156                                 for( GLuint b = 0; b < bytesPerPixel ; b ++ ){
 157                                         temp=0;
 158                                         howmany=0;
 159                                         for( GLuint l = 0; l < texdetail*texture.sizeX ; l +=texture.sizeX ){
 160                                                 for( GLuint j = 0; j < texdetail ; j ++ )
 161                                                 {
 162                                                         temp += (int)texture.data[k+i+j*bytesPerPixel+l*bytesPerPixel+b];       // Set The 1st Byte To The Value Of The 3rd Byte
 163                                                         howmany++;
 164                                                 }
 165                                         }
 166                                         texture.data[which+b]=GLubyte(temp/howmany);
 167                                 }
 168                                 which+=bytesPerPixel;
 169                         }
 170                 }
 171                 texture.sizeX/=texdetail;
 172                 texture.sizeY/=texdetail;
 173         }
 174
 175         return true;
 176
 177 #endif
 178 }