Transcode DDS BCn to ETC2 in case of missing hardware support for S3TC/BPTC

code/CMakeLists.txt

@@ -52,6 +52,8 @@ TARGET_LINK_LIBRARIES(code PUBLIC compiler)
 
 target_link_libraries(code PUBLIC md5)
 
+target_link_libraries(code PUBLIC etcpak)
+
 if (FSO_BUILD_WITH_DISCORD)
 	target_link_libraries(code PUBLIC discord-rpc)
 	add_definitions(-DWITH_DISCORD)

code/bmpman/bmpman.cpp

@@ -1154,6 +1154,14 @@ static int bm_load_info(BM_TYPE type, const char *filename, CFILE *img_cfp, int
 			*c_type = BM_TYPE_BC7;
 			break;
 
+		case DDS_ETC2_RGBA8:
+			*c_type = BM_TYPE_ETC2_RGBA_EAC;
+			break;
+
+		case DDS_ETC2_RGB:
+			*c_type = BM_TYPE_ETC2_RGB;
+			break;
+
 		case DDS_UNCOMPRESSED:
 			*c_type = BM_TYPE_DDS;
 			break;

code/cfile/cfile.cpp

@@ -566,6 +566,31 @@ int cf_rename(const char *old_name, const char *name, int dir_type)
 
 }
 
+int cf_rename(const char* old_name, const char* name, int dir_type, int location_flags)
+{
+	Assert(CF_TYPE_SPECIFIED(dir_type));
+
+	int ret_code;
+	SCP_string old_longname;
+	SCP_string new_longname;
+
+	cf_create_default_path_string(old_longname, dir_type, old_name, location_flags);
+	cf_create_default_path_string(new_longname, dir_type, name, location_flags);
+
+	ret_code = rename(old_longname.c_str(), new_longname.c_str());
+	if (ret_code != 0) {
+		switch (errno) {
+		case EACCES:
+			return CF_RENAME_FAIL_ACCESS;
+		case ENOENT:
+		default:
+			return CF_RENAME_FAIL_EXIST;
+		}
+	}
+
+	return CF_RENAME_SUCCESS;
+}
+
 
 // This takes a path (e.g. "C:\Games\FreeSpace2\Lots\More\Directories") and creates it in its entirety.
 // Do note that this requires the path to have normalized directory separators as defined by DIR_SEPARATOR_CHAR

code/cfile/cfile.h

@@ -33,6 +33,7 @@ struct CFILE;
 // extra info that can be returned when getting a file listing
 typedef struct {
 	time_t write_time;
+	size_t size;
 } file_list_info;
 
 
@@ -289,6 +290,7 @@ uint cf_add_chksum_long(uint seed, ubyte *buffer, size_t size);
 #define CF_RENAME_FAIL_ACCESS			1					// new name could not be created
 #define CF_RENAME_FAIL_EXIST			2					// old name does not exist
 int cf_rename(const char *old_name, const char *name, int type = CF_TYPE_ANY );
+int cf_rename(const char *old_name, const char *name, int type, int location_flags);
 
 // Creates the directory path if it doesn't exist. Even creates all its
 // parent paths.

code/cfile/cfilesystem.cpp

@@ -1800,6 +1800,7 @@ int cf_get_file_list(SCP_vector<SCP_string>& list, int pathtype, const char* _fi
 
 			if (info) {
 				tinfo.write_time = file.m_time;
+				tinfo.size = file.size;
 				info->push_back(tinfo);
 			}
 		}
@@ -1873,6 +1874,7 @@ int cf_get_file_list(SCP_vector<SCP_string>& list, int pathtype, const char* _fi
 
 			if (info) {
 				tinfo.write_time = file.m_time;
+				tinfo.size = file.size;
 				info->push_back(tinfo);
 			}
 		}

code/cmdline/cmdline.cpp

@@ -238,6 +238,7 @@ Flag exe_params[] =
 	{ "-log_multi_packet",	"Log multi packet types ",					true,	0,									EASY_DEFAULT,					"Troubleshoot", "http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-log_multi_packet",},
 	{ "-no_bsp_align",		"Disable pof BSP data alignment",			true,	0,									EASY_DEFAULT,					"Troubleshoot", "http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-no_bsp_align", },
     { "-no_large_shaders",	"Split large shader into smaller shaders",		true,	0,									EASY_DEFAULT,					"Troubleshoot", "http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-no_large_shaders", },
+	{ "-no_transcode_cache","Disables the ETC2 transcode cache",		true,	0,									EASY_DEFAULT,					"Troubleshoot", "http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-no_transcode_cache", },
 
 #ifdef WIN32
 	{ "-fix_registry",	"Use a different registry path",				true,	0,									EASY_DEFAULT,					"Troubleshoot", "http://www.hard-light.net/wiki/index.php/Command-Line_Reference#-fix_registry", },
@@ -470,6 +471,7 @@ cmdline_parm no_large_shaders("-no_large_shaders", NULL, AT_NONE);
 #ifdef WIN32
 cmdline_parm fix_registry("-fix_registry", NULL, AT_NONE);
 #endif
+cmdline_parm no_transcode_cache_arg("-no_transcode_cache", nullptr, AT_NONE);
 
 int Cmdline_load_all_weapons = 0;
 int Cmdline_nomovies = 0;
@@ -494,6 +496,7 @@ bool Cmdline_no_large_shaders = false;
 #ifdef WIN32
 bool Cmdline_alternate_registry_path = false;
 #endif
+bool Cmdline_no_transcode_cache = false;
 uint Cmdline_rng_seed = 0;
 bool Cmdline_reuse_rng_seed = false;
 
@@ -2162,6 +2165,11 @@ bool SetCmdlineParams()
     if (no_large_shaders.found()) {
         Cmdline_no_large_shaders = true;
     }
+
+	if (no_transcode_cache_arg.found())
+	{
+		Cmdline_no_transcode_cache = true;
+	}
 
 #ifdef WIN32
 	if (fix_registry.found()) {

code/cmdline/cmdline.h

@@ -129,6 +129,7 @@ extern bool Cmdline_no_large_shaders;
 #ifdef WIN32
 extern bool Cmdline_alternate_registry_path;
 #endif
+extern bool Cmdline_no_transcode_cache;
 
 // Developer/Testing related
 extern char *Cmdline_start_mission;