Source/Texture.cpp

   1 #include "gamegl.h"
   2 #include "Texture.h"
   3 #include "TGALoader.h"
   4
   5 using namespace std;
   6
   7 extern TGAImageRec texture;
   8 extern bool trilinear;
   9
  10
  11 class TextureRes {
  12 private:
  13     static vector<TextureRes*> list;
  14
  15     GLuint id;
  16     string filename;
  17     bool hasMipmap;
  18     bool hasAlpha;
  19     bool isSkin;
  20     int skinsize;
  21     GLubyte* data;
  22     int datalen;
  23     GLubyte* skindata;
  24
  25     void load();
  26
  27 public:
  28     TextureRes(const string& filename, bool hasMipmap, bool hasAlpha);
  29     TextureRes(const string& filename, bool hasMipmap, GLubyte* array, int* skinsize);
  30     ~TextureRes();
  31     void bind();
  32
  33     static void reloadAll();
  34 };
  35
  36
  37 vector<TextureRes*> TextureRes::list;
  38
  39 void TextureRes::load(){
  40     //load image into 'texture' global var
  41     if(!skindata){
  42         unsigned char filenamep[256];
  43         CopyCStringToPascal(ConvertFileName(filename.c_str()),filenamep);
  44         upload_image(filenamep,hasAlpha);
  45     }
  46
  47         skinsize=texture.sizeX;
  48         GLuint type=GL_RGBA;
  49         if(texture.bpp==24)
  50                 type=GL_RGB;
  51
  52         glPixelStorei(GL_UNPACK_ALIGNMENT,1);
  53
  54     glDeleteTextures(1,&id);
  55     glGenTextures(1,&id);
  56         glTexEnvi(GL_TEXTURE_ENV,GL_TEXTURE_ENV_MODE,GL_MODULATE);
  57
  58         glBindTexture(GL_TEXTURE_2D, id);
  59         glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_LINEAR);
  60         if(hasMipmap){
  61                 glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,(trilinear?GL_LINEAR_MIPMAP_LINEAR:GL_LINEAR_MIPMAP_NEAREST));
  62         glTexParameteri(GL_TEXTURE_2D,GL_GENERATE_MIPMAP,GL_TRUE);
  63     }else{
  64                 glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_LINEAR);
  65     }
  66
  67         if(isSkin){
  68         if(skindata){
  69             glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, skinsize, skinsize, 0, GL_RGB, GL_UNSIGNED_BYTE, skindata);
  70         }else{
  71             free(data);
  72             const int nb=texture.sizeY*texture.sizeX*(texture.bpp/8);
  73             data=(GLubyte*)malloc(nb*sizeof(GLubyte));
  74             datalen=0;
  75             for(int i=0;i<nb;i++)
  76                 if((i+1)%4||type==GL_RGB)
  77                     data[datalen++]=texture.data[i];
  78             glTexImage2D(GL_TEXTURE_2D, 0, type, texture.sizeX, texture.sizeY, 0, GL_RGB, GL_UNSIGNED_BYTE, data);
  79         }
  80         }else{
  81         glTexImage2D(GL_TEXTURE_2D, 0, type, texture.sizeX, texture.sizeY, 0, type, GL_UNSIGNED_BYTE, texture.data);
  82         }
  83 }
  84
  85 void TextureRes::bind(){
  86     glBindTexture(GL_TEXTURE_2D,id);
  87 }
  88
  89 TextureRes::TextureRes(const string& _filename, bool _hasMipmap, bool _hasAlpha):
  90     id(0),filename(_filename),hasMipmap(_hasMipmap),hasAlpha(_hasAlpha),isSkin(false),
  91     skinsize(0),data(NULL),datalen(0),skindata(NULL) {
  92     load();
  93     list.push_back(this);
  94 }
  95
  96 TextureRes::TextureRes(const string& _filename, bool _hasMipmap, GLubyte* array, int* skinsizep):
  97     id(0),filename(_filename),hasMipmap(_hasMipmap),hasAlpha(false),isSkin(true),
  98     skinsize(0),data(NULL),datalen(0),skindata(NULL) {
  99     load();
 100     *skinsizep=skinsize;
 101     for(int i=0;i<datalen;i++)
 102         array[i]=data[i];
 103     skindata=array;
 104     list.push_back(this);
 105 }
 106
 107 TextureRes::~TextureRes(){
 108     free(data);
 109     glDeleteTextures(1,&id);
 110     for(vector<TextureRes*>::iterator it=list.begin();it!=list.end();it++)
 111         if(*it==this){
 112             list.erase(it);
 113             break;
 114         }
 115 }
 116
 117 void TextureRes::reloadAll(){
 118     for(vector<TextureRes*>::iterator it=list.begin();it!=list.end();it++){
 119         (*it)->id=0;
 120         (*it)->load();
 121     }
 122 }
 123
 124
 125
 126
 127 void Texture::load(const string& filename, bool hasMipmap, bool hasAlpha){
 128     destroy();
 129     tex=new TextureRes(filename,hasMipmap,hasAlpha);
 130 }
 131
 132 void Texture::load(const string& filename, bool hasMipmap, GLubyte* array, int* skinsizep){
 133     destroy();
 134     tex=new TextureRes(filename,hasMipmap,array,skinsizep);
 135 }
 136
 137 void Texture::destroy(){
 138     if(tex){
 139         delete tex;
 140         tex=NULL;
 141     }
 142 }
 143
 144 void Texture::bind(){
 145     if(tex)
 146         tex->bind();
 147     else
 148         glBindTexture(GL_TEXTURE_2D,0);
 149 }
 150
 151 void Texture::reloadAll(){
 152     TextureRes::reloadAll();
 153 }
 154