Method process_frontend

encoder/basisu_comp.cpp:2768–2972

	}

	bool basis_compressor::process_frontend()
	{
		debug_printf("basis_compressor::process_frontend\n");
						
#if 0
		// TODO
		basis_etc1_pack_params pack_params;
		pack_params.m_quality = cETCQualityMedium;
		pack_params.m_perceptual = m_params.m_perceptual;
		pack_params.m_use_color4 = false;

		pack_etc1_block_context pack_context;

		std::unordered_set<uint64_t> endpoint_hash;
		std::unordered_set<uint32_t> selector_hash;

		for (uint32_t i = 0; i < m_source_blocks.size(); i++)
		{
			etc_block blk;
			pack_etc1_block(blk, m_source_blocks[i].get_ptr(), pack_params, pack_context);

			const color_rgba c0(blk.get_block_color(0, false));
			endpoint_hash.insert((c0.r | (c0.g << 5) | (c0.b << 10)) | (blk.get_inten_table(0) << 16));

			const color_rgba c1(blk.get_block_color(1, false));
			endpoint_hash.insert((c1.r | (c1.g << 5) | (c1.b << 10)) | (blk.get_inten_table(1) << 16));

			selector_hash.insert(blk.get_raw_selector_bits());
		}

		const uint32_t total_unique_endpoints = (uint32_t)endpoint_hash.size();
		const uint32_t total_unique_selectors = (uint32_t)selector_hash.size();

		if (m_params.m_debug)
		{
			debug_printf("Unique endpoints: %u, unique selectors: %u\n", total_unique_endpoints, total_unique_selectors);
		}
#endif

		const double total_texels = m_total_blocks * 16.0f;

		int endpoint_clusters = m_params.m_etc1s_max_endpoint_clusters;
		int selector_clusters = m_params.m_etc1s_max_selector_clusters;

		if (endpoint_clusters > basisu_frontend::cMaxEndpointClusters)
		{
			error_printf("Too many endpoint clusters! (%u but max is %u)\n", endpoint_clusters, basisu_frontend::cMaxEndpointClusters);
			return false;
		}
		if (selector_clusters > basisu_frontend::cMaxSelectorClusters)
		{
			error_printf("Too many selector clusters! (%u but max is %u)\n", selector_clusters, basisu_frontend::cMaxSelectorClusters);
			return false;
		}
		
		if (m_params.m_quality_level != -1)
		{
			const float quality = saturate(m_params.m_quality_level / 255.0f);