OpenGL with SDL Blitting

[Han007Solo215]

Hey All,

So i'm using SDL on top of previously created GL images (using glVertex). I have everything setup through SDL but my bitmap images are not drawing at all on my SDLScreen.

Here's the initialization (and a relevant function) of my screen, in "VideoGame.cpp":

SDL_Surface* drawContext = SDL_SetVideoMode(1024, 1024, 32, nFlags);

SDL_Surface* getSurface() {
	return drawContext;
}

Here's my draw code for my bitmap image (in "Player.cpp"):

SDL_Surface *temp;

temp = SDL_LoadBMP("Sprites/sprite.bmp")

if (temp == NULL) {
	printf("Unable to load bitmap: %s\n", SDL_GetError());
	exit(1);
}

SDL_SetColorKey( temp, SDL_SRCCOLORKEY | SDL_RLEACCEL, 
       SDL_MapRGB( temp->format, 255, 0, 255) );

image = SDL_DisplayFormat(temp);
SDL_FreeSurface(temp);

SDL_UnlockSurface( getSurface() );
SDL_UnlockSurface( image );

//Code to properly interpolate "GL Coordinates" to Pixel coordinates
//Assigns values into drawX and drawY

SDL_Rect rect = {drawX,drawY, 64, 64};

int worked = SDL_BlitSurface(image, NULL, getSurface(), &rect);
//printing worked displays '0', which is a success

SDL_UpdateRects( getSurface(), 1, &rect );

I'm receiving NO COMPILER or LINKER errors. The image is just not drawing.

Any help would be most excellent. Even if you think it's something minor...i'm desperate.

Thanks,
Dominic

[Azriel]

try adding
SDL_Flip(getSurface());
to the end. not entirely sure if that's correct but worth a try.



Azriel~