GLuint TextureHandler::loadTexture(const std::string& strFilename)
{
GLuint textureId=0;
int i;
for (i = 0; i < (int) lookup.size(); i++)
{
if (lookup[i].first == strFilename)
return lookup[i].second;
}
std::string::size_type dot_pos = strFilename.rfind('.');
std::string suff = strFilename.substr(dot_pos+1);
std::transform(suff.begin(), suff.end(), suff.begin(), tolower);
if(suff == "raw")
//if(stricmp(strrchr(strFilename.c_str(),'.'),".raw")==0)
{
// open the texture file
std::ifstream file;
file.open(strFilename.c_str(), std::ios::in | std::ios::binary);
if(!file)
{
Piavca::Error(_T("Texture file '") + StringToTString(strFilename) + _T("' not found."));
return 0;
}
// load the dimension of the texture
int width;
file.read((char *)&width, 4);
int height;
file.read((char *)&height, 4);
int depth;
file.read((char *)&depth, 4);
// allocate a temporary buffer to load the texture to
unsigned char *pBuffer;
pBuffer = new unsigned char[2 * width * height * depth];
if(pBuffer == 0)
{
Piavca::Error(_T("Memory allocation for texture '") + StringToTString(strFilename) + _T("' failed."));
return 0;
}
// load the texture
file.read((char *)pBuffer, width * height * depth);
// explicitely close the file
file.close();
// flip texture around y-axis (-> opengl-style)
int y;
for(y = 0; y < height; y++)
{
memcpy(&pBuffer[(height + y) * width * depth], &pBuffer[(height - y - 1) * width * depth], width * depth);
}
// generate texture
glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
glGenTextures(1, &textureId);
glBindTexture(GL_TEXTURE_2D, textureId);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexImage2D(GL_TEXTURE_2D, 0, (depth == 3) ? GL_RGB : GL_RGBA, width, height, 0, (depth == 3) ? GL_RGB : GL_RGBA, GL_UNSIGNED_BYTE, &pBuffer[width * height * depth]);
// free the allocated memory
delete [] pBuffer;
}
//else if(stricmp(strrchr(strFilename.c_str(),'.'),".tga")==0)
else if(suff == "tga")
{
CTga *Tga;
Tga = new CTga();
std::cout << "reading texture file" << strFilename << std::endl;
if(Tga->ReadFile(strFilename.c_str())==0)
{
Tga->Release();
return 0;
}
std::cout << "finished reading texture file" << strFilename << std::endl;
if(Tga->Bpp()!=32)
{
Tga->Release();
return 0;
}
//Flip texture
int width = Tga->GetSizeX();
int height = Tga->GetSizeY();
//int depth = Tga->Bpp() / 8;
glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
glGenTextures(1, &textureId);
glBindTexture(GL_TEXTURE_2D, textureId);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA , GL_UNSIGNED_BYTE, (char*)Tga->GetPointer() );
Tga->Release();
}
if (textureId > 0)
{
lookup.push_back(std::make_pair(strFilename, textureId));
}
return textureId;
}
bool Demo::loadTexture(const std::string& strFilename, GLuint& pId)
{
// initialize the id
pId = 0;
if (stricmp(strrchr(strFilename.c_str(),'.'),".raw")==0)
{
// open the texture file
std::ifstream file;
file.open(strFilename.c_str(), std::ios::in | std::ios::binary);
if(!file)
{
LOG(("Texture file '" + strFilename + "' not found.").c_str());
return false;
}
// read the width, height and depth of the texture
int width;
file.read((char *)&width, 4);
int height;
file.read((char *)&height, 4);
int depth;
file.read((char *)&depth, 4);
// check if an error has happend
if(!file)
{
LOG(("Error while readinf from texture file '" + strFilename + "'.").c_str());
return false;
}
// allocate a temporary buffer to hold the texture data
unsigned char *pBuffer;
pBuffer = new unsigned char[width * height * depth];
if(pBuffer == 0)
{
LOG(("Memory allocation for texture file '" + strFilename + "' failed.").c_str());
return false;
}
// load the texture
file.read((char *)pBuffer, width * height * depth);
file.close();
// generate the texture
glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
glGenTextures(1, &pId);
glBindTexture(GL_TEXTURE_2D, pId);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexImage2D(GL_TEXTURE_2D, 0, (depth == 3) ? GL_RGB : GL_RGBA, width, height, 0, (depth == 3) ? GL_RGB : GL_RGBA, GL_UNSIGNED_BYTE, pBuffer);
}
else if (stricmp(strrchr(strFilename.c_str(),'.'),".tga")==0)
{
CTga *Tga;
Tga = new CTga();
if(Tga->ReadFile(strFilename.c_str())==0)
{
Tga->Release();
return false;
}
if(Tga->Bpp()!=32)
{
Tga->Release();
return false;
}
glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
glGenTextures(1, &pId);
glBindTexture(GL_TEXTURE_2D, pId);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, Tga->GetSizeX(), Tga->GetSizeY(), 0, GL_RGBA, GL_UNSIGNED_BYTE, Tga->GetPointer() );
Tga->Release();
}
return true;
}
GLuint Viewer::loadTexture(const std::string& strFilename)
{
GLuint textureId=0;
if(stricmp(strrchr(strFilename.c_str(),'.'),".raw")==0)
{
// open the texture file
std::ifstream file;
file.open(strFilename.c_str(), std::ios::in | std::ios::binary);
if(!file)
{
std::cerr << "Texture file '" << strFilename << "' not found." << std::endl;
return 0;
}
// load the dimension of the texture
int width = readInt(&file);
int height = readInt(&file);
int depth = readInt(&file);
// allocate a temporary buffer to load the texture to
unsigned char *pBuffer;
pBuffer = new unsigned char[2 * width * height * depth];
if(pBuffer == 0)
{
std::cerr << "Memory allocation for texture '" << strFilename << "' failed." << std::endl;
return 0;
}
// load the texture
file.read((char *)pBuffer, width * height * depth);
// explicitely close the file
file.close();
// flip texture around y-axis (-> opengl-style)
int y;
for(y = 0; y < height; y++)
{
memcpy(&pBuffer[(height + y) * width * depth], &pBuffer[(height - y - 1) * width * depth], width * depth);
}
// generate texture
glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
glGenTextures(1, &textureId);
glBindTexture(GL_TEXTURE_2D, textureId);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexImage2D(GL_TEXTURE_2D, 0, (depth == 3) ? GL_RGB : GL_RGBA, width, height, 0, (depth == 3) ? GL_RGB : GL_RGBA, GL_UNSIGNED_BYTE, &pBuffer[width * height * depth]);
// free the allocated memory
delete [] pBuffer;
}
else if(stricmp(strrchr(strFilename.c_str(),'.'),".tga")==0)
{
CTga *Tga;
Tga = new CTga();
if(Tga->ReadFile(strFilename.c_str())==0)
{
Tga->Release();
return 0;
}
if(Tga->Bpp()!=32)
{
Tga->Release();
return 0;
}
//Flip texture
int width = Tga->GetSizeX();
int height = Tga->GetSizeY();
//int depth = Tga->Bpp() / 8;
glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
glGenTextures(1, &textureId);
glBindTexture(GL_TEXTURE_2D, textureId);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA , GL_UNSIGNED_BYTE, (char*)Tga->GetPointer() );
Tga->Release();
}
return textureId;
}
GLuint Model::loadTexture(const std::string& strFilename)
{
GLuint pId=0;
if(stricmp(strrchr(strFilename.c_str(),'.'),".raw")==0)
{
// open the texture file
std::ifstream file;
file.open(strFilename.c_str(), std::ios::in | std::ios::binary);
if(!file)
{
std::cerr << "Texture file '" << strFilename << "' not found." << std::endl;
return 0;
}
// load the dimension of the texture
int width = readInt(&file);
int height = readInt(&file);
int depth = readInt(&file);
// allocate a temporary buffer to load the texture to
unsigned char *pBuffer;
pBuffer = new unsigned char[width * height * depth];
if(pBuffer == 0)
{
std::cerr << "Memory allocation for texture '" << strFilename << "' failed." << std::endl;
return 0;
}
// load the texture
file.read((char *)pBuffer, width * height * depth);
// explicitely close the file
file.close();
// generate texture
glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
glGenTextures(1, &pId);
glBindTexture(GL_TEXTURE_2D, pId);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexImage2D(GL_TEXTURE_2D, 0, (depth == 3) ? GL_RGB : GL_RGBA, width, height, 0, (depth == 3) ? GL_RGB : GL_RGBA, GL_UNSIGNED_BYTE, &pBuffer[0]);
// free the allocated memory
delete [] pBuffer;
}
else if (stricmp(strrchr(strFilename.c_str(),'.'),".tga")==0)
{
CTga *Tga;
Tga = new CTga();
//Note: This will always make a 32-bit texture
if(Tga->ReadFile(strFilename.c_str())==0)
{
Tga->Release();
return false;
}
//Bind texture
int width = Tga->GetSizeX();
int height = Tga->GetSizeY();
int depth = Tga->Bpp() / 8;
glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
glGenTextures(1, &pId);
glBindTexture(GL_TEXTURE_2D, pId);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexImage2D(GL_TEXTURE_2D, 0, ((depth == 3) ? GL_RGB : GL_RGBA), width, height, 0, ((depth == 3) ? GL_RGB : GL_RGBA) , GL_UNSIGNED_BYTE, (char*)Tga->GetPointer() );
Tga->Release();
}
return pId;
}