Function save_dds_buffer

modules/dds/image_saver_dds.cpp:298–478

}

Vector<uint8_t> save_dds_buffer(const Ref<Image> &p_img) {
	Ref<StreamPeerBuffer> stream_buffer;
	stream_buffer.instantiate();

	Ref<Image> image = p_img;

	stream_buffer->put_32(DDS_MAGIC);
	stream_buffer->put_32(DDS_HEADER_SIZE);

	uint32_t flags = DDSD_CAPS | DDSD_HEIGHT | DDSD_WIDTH | DDSD_PIXELFORMAT | DDSD_PITCH | DDSD_LINEARSIZE;

	if (image->has_mipmaps()) {
		flags |= DDSD_MIPMAPCOUNT;
	}

	stream_buffer->put_32(flags);

	uint32_t height = image->get_height();
	stream_buffer->put_32(height);

	uint32_t width = image->get_width();
	stream_buffer->put_32(width);

	DDSFormat dds_format = _image_format_to_dds_format(image->get_format());
	const DDSFormatInfo &info = dds_format_info[dds_format];

	uint32_t depth = 1; // Default depth for 2D textures

	uint32_t pitch;
	if (info.compressed) {
		pitch = ((MAX(info.divisor, width) + info.divisor - 1) / info.divisor) * ((MAX(info.divisor, height) + info.divisor - 1) / info.divisor) * info.block_size;
	} else {
		pitch = width * info.block_size;
	}

	stream_buffer->put_32(pitch);
	stream_buffer->put_32(depth);

	uint32_t mipmaps = image->get_mipmap_count() + 1;
	stream_buffer->put_32(mipmaps);

	uint32_t reserved = 0;
	for (int i = 0; i < 11; i++) {
		stream_buffer->put_32(reserved);
	}

	stream_buffer->put_32(DDS_PIXELFORMAT_SIZE);

	uint32_t pf_flags = 0;

	DDSFormatType format_type = _dds_format_get_type(dds_format);

	if (format_type == DDFT_BITMASK) {
		pf_flags = DDPF_RGB;

		if (image->get_format() == Image::FORMAT_LA8 || image->get_format() == Image::FORMAT_RG8 || image->get_format() == Image::FORMAT_RGBA8 || image->get_format() == Image::FORMAT_RGBA4444) {
			pf_flags |= DDPF_ALPHAPIXELS;
		}