Method _denoise_oidn

modules/lightmapper_rd/lightmapper_rd.cpp:916–980

}

LightmapperRD::BakeError LightmapperRD::_denoise_oidn(RenderingDevice *p_rd, RID p_source_light_tex, RID p_source_normal_tex, RID p_dest_light_tex, const Size2i &p_atlas_size, int p_atlas_slices, bool p_bake_sh, bool p_shadowmask, const String &p_exe) {
	Ref<DirAccess> da = DirAccess::create(DirAccess::ACCESS_FILESYSTEM);

	for (int i = 0; i < p_atlas_slices; i++) {
		String fname_norm_in = EditorPaths::get_singleton()->get_cache_dir().path_join(vformat("temp_norm_%d.pfm", i));
		_store_pfm(p_rd, p_source_normal_tex, i, p_atlas_size, fname_norm_in, false);

		for (int j = 0; j < (p_bake_sh ? 4 : 1); j++) {
			int index = i * (p_bake_sh ? 4 : 1) + j;
			String fname_light_in = EditorPaths::get_singleton()->get_cache_dir().path_join(vformat("temp_light_%d.pfm", index));
			String fname_out = EditorPaths::get_singleton()->get_cache_dir().path_join(vformat("temp_denoised_%d.pfm", index));

			_store_pfm(p_rd, p_source_light_tex, index, p_atlas_size, fname_light_in, p_shadowmask);

			List<String> args;
			args.push_back("--device");
			args.push_back("default");

			args.push_back("--filter");
			args.push_back("RTLightmap");

			args.push_back(p_shadowmask ? "--ldr" : "--hdr");
			args.push_back(fname_light_in);

			args.push_back("--nrm");
			args.push_back(fname_norm_in);

			args.push_back("--output");
			args.push_back(fname_out);

			String str;
			int exitcode = 0;

			Error err = OS::get_singleton()->execute(p_exe, args, &str, &exitcode, true);

			da->remove(fname_light_in);

			if (err != OK || exitcode != 0) {
				da->remove(fname_out);
				print_verbose(str);
				ERR_FAIL_V_MSG(BAKE_ERROR_LIGHTMAP_CANT_PRE_BAKE_MESHES, vformat("OIDN denoiser failed, return code: %d", exitcode));
			}

			Ref<Image> img = _read_pfm(fname_out, p_shadowmask);
			da->remove(fname_out);

			ERR_FAIL_COND_V(img.is_null(), BAKE_ERROR_LIGHTMAP_CANT_PRE_BAKE_MESHES);

			Vector<uint8_t> old_data = p_rd->texture_get_data(p_source_light_tex, index);
			Vector<uint8_t> new_data = img->get_data();
			img.unref(); // Avoid copy on write.

			uint32_t count = old_data.size() / 2;
			const uint16_t *src = (const uint16_t *)old_data.ptr();
			uint16_t *dst = (uint16_t *)new_data.ptrw();
			for (uint32_t k = 0; k < count; k += 4) {
				dst[k + 3] = src[k + 3];
			}