GLubyte *LoadTga(char *filename, GLint *iWidth, GLint *iHeight,
	GLint *iComponents, GLenum *eFormat)
{
	int idlength = 0;
	int haspalette = 0;
	int type = 0;
	int palstart = 0;
	int pallength = 0;
	int bpe = 0;
	int xorg = 0, yorg = 0;
	int width = 0, height = 0;
	int bpp = 0;
	int attrib = 0;
	GLubyte *picture = 0;
	int i;
	FILE *tga;

	if ((tga = fopen(filename, "rb")) == NULL) {
		fprintf(stderr, "Error: could not open file: %s\n", filename);
		exit(2);
	}

	fread(&idlength, 1, 1, tga);
	fread(&haspalette, 1, 1, tga);
	fread(&type, 1, 1, tga);
	fread(&palstart, 2, 1, tga);
	fread(&pallength, 2, 1, tga);
	fread(&bpe, 1, 1, tga);
	fread(&xorg, 2, 1, tga);
	fread(&yorg, 2, 1, tga);
	fread(&width, 2, 1, tga);
	fread(&height, 2, 1, tga);
	fread(&bpp, 1, 1, tga);
	fread(&attrib, 1, 1, tga);

	if (type != 2 || haspalette) {
		fprintf(stderr, "Format is not supported\n");
		exit(2);
	}

	fseek(tga, idlength, SEEK_CUR);
	picture = (GLubyte *) malloc(height*width*bpp/8);
	for (i = 0; i < width*height*bpp/8;) {
		picture[i+2] = getc(tga);
		picture[i+1] = getc(tga);
		picture[i] = getc(tga);
		i+=3;
	}

	*iComponents = bpp/8;
	*iWidth = width;
	*iHeight = height;
	if (bpp == 24)
		*eFormat = GL_RGB;
	else if (bpp == 32)
		*eFormat = GL_RGBA;
	else {
		fprintf(stderr, "Unknown size of bits per pixel\n");	
		exit(2);
	}

	return picture;
}