Azure Product

#include "FreeImage.h"

const char textName[64] = ".\\woodfloor.tga";

  // 获得图像文件的类型
  FREE_IMAGE_FORMAT fifmt = FreeImage_GetFileType(textName, 0);

FIBITMAP *dib = FreeImage_Load(fifmt, textName,0);

FIBITMAP *temp = FreeImage_ConvertTo24Bits(dib);
FreeImage_Unload(dib);
dib = temp;
  

if( dib != NULL )
  {
glGenTextures( 1, &g_textureID );
    glBindTexture( GL_TEXTURE_2D, g_textureID );
    glTexParameteri( GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER, GL_LINEAR );
    glTexParameteri( GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER, GL_LINEAR );

    //为纹理数据分配空间
    BYTE *bits = new BYTE[FreeImage_GetWidth(dib) * FreeImage_GetHeight(dib) * 3];

    //获得纹理数据的指针
    BYTE *pixels = (BYTE*)FreeImage_GetBits(dib);

    //图像文件的储存顺序是 BGR, 我们需要把它转换成RGB来生成纹理。
    for(int pix=0; pix<FreeImage_GetWidth(dib) * FreeImage_GetHeight(dib); pix++)
    {
      bits[pix*3+0]=pixels[pix*3+2];
      bits[pix*3+1]=pixels[pix*3+1];
      bits[pix*3+2]=pixels[pix*3+0];

    }
  
//创建纹理
    glTexImage2D( GL_TEXTURE_2D, 0, 3, FreeImage_GetWidth(dib), FreeImage_GetHeight(dib), 0,
        GL_RGB, GL_UNSIGNED_BYTE, bits );

    
//释放
    FreeImage_Unload(dib);
    delete bits;
  }