Loading texture using SDL

[bahtiud]

Hello.

I'm coding an application with openGL using SDL on Linux. I followed the Nehe tutorial and arrived in the texture section. Here, he uses this :

 if (TextureImage[0]=LoadBMP("Data/NeHe.bmp"))
   {
       Status=TRUE;
      glGenTextures(1, &texture[0]);
      glBindTexture(GL_TEXTURE_2D, texture[0]);
      glTexImage2D(GL_TEXTURE_2D, 0, 3, TextureImage[0]->sizeX, 
                     TextureImage[0]->sizeY, 0, GL_RGB, GL_UNSIGNED_BYTE, TextureImage[0]->data);
     etc.
  }

where TextureImage is AUX_RGBImageRec *TextureImage[1];

But I can't use GLaux and I don't want to. I've tried to use an SDL_surface instead of AUX_RGBImageRec and use TextureImage->pixels instead of TextureImage[0]->data but it didn't work (I've got a blue square and not a texture).

Can someone explain to me how I can load a texture using SDL ?

[ragzzy-R]

if u are following Nehe's tutorial then this code for SDL should work

int LoadGLTextures( )
{
    /* Status indicator */
    int Status = FALSE;
 
    /* Create storage space for the texture */
    SDL_Surface *TextureImage[1]; 
 
    /* Load The Bitmap, Check For Errors, If Bitmap's Not Found Quit */
    if ( ( TextureImage[0] = SDL_LoadBMP( "nehe.bmp" ) ) )
        {
 
	    /* Set the status to true */
	    Status = TRUE;
		OutputDebugStringW(L"My output string.");
	    /* Create The Texture */
	    glGenTextures( 1, &texture[0] );
 
	    /* Typical Texture Generation Using Data From The Bitmap */
	    glBindTexture( GL_TEXTURE_2D, texture[0] );
 
	    /* Generate The Texture */
	    glTexImage2D( GL_TEXTURE_2D, 0, 3, TextureImage[0]->w,
			  TextureImage[0]->h, 0, GL_RGB,
			  GL_UNSIGNED_BYTE, TextureImage[0]->pixels );
		glGetError();
 
	    /* Linear Filtering */
	    glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR );
	    glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR );
        }
 
    /* Free up any memory we may have used */
    if ( TextureImage[0] )
	    SDL_FreeSurface( TextureImage[0] );
 
    return Status;
}

i tried this in Fedora,OpenSUSE,ubuntu,and linux Mint everything worked fine.though im facing trouble with windows :P

[mobeen]

Probably the third parameter to glTexImage2D should be the internal format which in this case should be GL_RGB.
http://www.opengl.org/discussion_boa...59#post1249559