Texture Class

//this code is texture.h #ifndef TEXTURE_H #define TEXTURE_H #ifdef WIN32 #define WIN32_LEAN_AND_MEAN #include <windows.h> #endif //Platform Defined #if defined(__APPLE__) && defined(__MACH__) #include <OpenGL/gl.h> #include <OpenGL/glu.h> #else #include <GL/GL.h> #include <GL/GLU.h> #endif #include <string> #include <vector> #include <fstream> using std::string; using std::vector; using std::ifstream; struct TGA_Header { GLubyte ID_Length; GLubyte ColorMapType; GLubyte ImageType; GLubyte ColorMapSpecification[5]; GLshort xOrigin; GLshort yOrigin; GLshort ImageWidth; GLshort ImageHeight; GLubyte pixelDepth; }; class Texture { //Functions public: Texture(string filename , string name = ""); ~Texture(); //Variables public: unsigned char *imageData; unsigned int bpp; unsigned int width; unsigned int height; unsigned int texID; string name; static vector<Texture *> textures; private: bool loadTGA(string filename); bool creatTexture(unsigned char *imageData , int width , int height, int type); }; #endif ========================================================================================= Below code is Texture.cpp ========================================================================================= #include "Texture.h" vector <Texture *> Texture::textures; Texture::Texture(string in_filename , string in_name) { imageData = NULL; loadTGA(in_filename); name = in_name; textures.push_back(this); } Texture::~Texture() { for( vector<Texture *> ::iterator it = textures.begin(); it != textures.end(); it++) if((*it) == this) textures.erase(it); if(imageData) delete imageData; } bool Texture::loadTGA(string filename) { TGA_Header TGAheader; ifstream file( filename.data(), std::ios_base::binary); if( !file.is_open()) { return false; } if(!file.read( (char *)&TGAheader , sizeof(TGAheader))) { return false; } if ( TGAheader.ImageType !=2) { return false; } width = TGAheader.ImageWidth; height = TGAheader.ImageHeight; bpp = TGAheader.pixelDepth; if ( width <= 0 || height <= 0 || (bpp !=24 && bpp != 32)) { return false; } GLuint type = GL_RGBA; if ( bpp == 24) { type = GL_RGB; } GLuint bytesPerPixel = bpp / 8; GLuint imageSize = width * height * bytesPerPixel; imageData = new GLubyte[imageSize]; //이미지데이터에 아무것도 없으면 아무것도 반환 하지 않음 if (imageData == NULL ) { return false; } // if (!file.read (( char *)imageData, imageSize)) { delete imageData; return false; } //BGR 체널을 스왑 해서 RGB 로 변경 for ( GLuint i = 0; i < (int)imageSize; i += bytesPerPixel ) { GLuint temp = imageData[i]; imageData[i] = imageData[i + 2]; imageData[i + 2] = temp; } creatTexture(imageData , width , height , type); return true; } bool Texture::creatTexture(unsigned char *imageData , int width , int height, int type) { glGenTextures(1, &texID); glBindTexture(GL_TEXTURE_2D, texID); glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); glTexImage2D(GL_TEXTURE_2D, 0 , type , width , height, 0 , type , GL_UNSIGNED_BYTE , imageData); return true; } Game Developer Leegoon copyright all right reserved since 2010.