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