ZFX + Developia

Code: Alles auswählen

void WriteImageToFile(
	const Image<R32G32B32_Float> &	p_Image, // Deine Bilddaten als float-RGB
	File &				p_File, // Meine Klasse, kannst stattdessen fwrite() o.ä. benutzen
	const float				p_Exposure = 1.0f
) {
	// Create the file header string.
	::std::stringstream l_sFileHeader(::std::stringstream::out);
		// It consists of the magic number "PF" (color PFM), followed by a newline character, …
		l_sFileHeader << "PF" << ::std::endl
		// … the decimal width and height of the image, in pixels, followed by another newline character, …
			<< ::std::setbase(10) << p_Image.WidthInPixels() << " " << p_Image.HeightInPixels() << ::std::endl
		// … and an exposure value, which also determines the file's Endian (negative means little Endian),
		//	terminated by a final newline character to seperate the header from the pixel data.
			<< -p_Exposure << std::endl;

	// When writing the header string to the file, ensure to exclude the terminating null character!
	p_File.WriteBinaryData(l_sFileHeader.str().c_str(), l_sFileHeader.str().length());

	// The file data is flipped vertically. We can, however, write to the file sequentially by writing the last
	//	line first.
	for(size_t l_CurrentLine = 0; l_CurrentLine < p_Image.HeightInPixels(); ++l_CurrentLine)
		p_File.WriteBinaryData(
			p_Image.Line(p_Image.HeightInPixels() - 1 - l_CurrentLine), // Gibt einen Zeiger auf die Zeile zurück …
			p_Image.WidthInPixels() * sizeof(R32G32B32_Float)
		);

	return;
}

Code: Alles auswählen

	fstream f;
	itos << this->screen_shot;   
	string path = "Test" + itos.str() + ".pfm";
	itos.str("");
	itos.clear(); 

	f.open(path.c_str(), ios::out );
    f << "PF" << endl;
	f << Texture->texture_resX << " ";
	f << Texture->texture_resY << endl;
	f << "-1.000000"  << endl;

	FLOAT* pTexels = (FLOAT*)tex.pData;
    for( UINT row = 0; row <Texture->texture_resY; row++ )
    {
      UINT rowStart = row * tex.RowPitch/4;
      for( UINT col = 0; col < Texture->texture_resX; col++ )
      {
		f << pTexels[rowStart + col*4 + 0] << " ";
		f << pTexels[rowStart + col*4 + 1] << " ";
		f << pTexels[rowStart + col*4 + 2] << " ";  
      }
	  f << endl;
    }

Code: Alles auswählen

f.open(path.c_str(), ios::out);
    f << "PF" << endl;
	f << Texture->texture_resX << " ";
	f << Texture->texture_resY << endl;
	f << "-1.000000"  << endl;

   FLOAT* pTexels = (FLOAT*)tex.pData;
    for( UINT row = 0; row <Texture->texture_resY; row++ )
    {
      UINT rowStart = row * tex.RowPitch/4;
      for( UINT col = 0; col < Texture->texture_resX; col++ )
      {
		f.write((const char*)&(pTexels[rowStart + col*4 + 0]),sizeof(float));
		f.write((const char*)&(pTexels[rowStart + col*4 + 1]),sizeof(float));
		f.write((const char*)&(pTexels[rowStart + col*4 + 2]),sizeof(float));
	  }
	}

	f.close();     
	Texture->texture_2D->Unmap(0);