UINT LoadTexturePNG(LPSTR pszFilename){
	UINT uTexture = 0;
	INT iWidth, iHeight, iBitDepth, iColorType, iRowBytes, i;
	BOOL bHasAlpha;
	FILE *hTexture;
	UCHAR sig[8];
	LPBYTE pbData;
	LPBYTE *pbRowPointers;
	png_structp png_ptr;
	png_infop info_ptr;

	hTexture = fopen(pszFilename, "rb");

	fread(&sig, 1, 8, hTexture);
	if(!png_check_sig(sig, 8)){
		//Not a png file
		fclose(hTexture);
		return 0;
	}

	png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
	info_ptr = png_create_info_struct(png_ptr);

	if(setjmp(png_ptr->jmpbuf)){
		png_destroy_read_struct(&png_ptr, &info_ptr, NULL);
		fclose(hTexture);
		return 0;
	}

	png_init_io(png_ptr, hTexture);
	png_set_sig_bytes(png_ptr, 8);

	png_read_info(png_ptr, info_ptr);
	png_get_IHDR(png_ptr, info_ptr, (LPUINT)&iWidth, (LPUINT)&iHeight, &iBitDepth, &iColorType, NULL, NULL, NULL);

	if(iColorType == PNG_COLOR_TYPE_PALETTE){
		png_set_expand(png_ptr);
	}
	if(iColorType == PNG_COLOR_TYPE_GRAY || iColorType == PNG_COLOR_TYPE_GRAY_ALPHA){
		png_set_gray_to_rgb(png_ptr);
	}

	if(info_ptr->color_type & PNG_COLOR_MASK_ALPHA || png_get_valid(png_ptr, info_ptr, PNG_INFO_tRNS)){
		bHasAlpha = TRUE;
	}else{
		bHasAlpha = FALSE;
	}

	if(iBitDepth == 16){
		png_set_strip_16(png_ptr);
	}

	png_set_filler(png_ptr, 0xff, PNG_FILLER_AFTER);
	png_read_update_info(png_ptr, info_ptr);

	iRowBytes = png_get_rowbytes(png_ptr, info_ptr);
	pbData = (LPBYTE)GlobalAlloc(GPTR, iRowBytes * iHeight);
	pbRowPointers = (LPBYTE)GlobalAlloc(GPTR, iHeight * sizeof(LPBYTE));
	for(i = 0; i < iHeight; i++){
		pbRowPointers[i] = pbData + i * iRowBytes;
	}

	png_read_image(png_ptr, pbRowPointers);
	png_read_end(png_ptr, NULL);

	//Make a texture (finally)
	glGenTextures(1, &uTexture);
	glBindTexture(GL_TEXTURE_2D, uTexture);
	glTexImage2D(GL_TEXTURE_2D, 0, (bHasAlpha? 4 : 3), iWidth, iHeight, 0, (bHasAlpha? GL_RGB : GL_RGBA), GL_UNSIGNED_BYTE, pbData);
	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);

	GlobalFree(pbRowPointers);
	GlobalFree(pbData);
	png_destroy_read_struct(&png_ptr, &info_ptr, NULL);
	fclose(hTexture);
	return uTexture;
}