add gameConf.use_image_scale_multi_thread

gframe/game.cpp

@@ -1326,6 +1326,8 @@ void Game::LoadConfig() {
 			gameConf.use_d3d = std::strtol(valbuf, nullptr, 10) > 0;
 		} else if(!std::strcmp(strbuf, "use_image_scale")) {
 			gameConf.use_image_scale = std::strtol(valbuf, nullptr, 10) > 0;
+		} else if (!std::strcmp(strbuf, "use_image_scale_multi_thread")) {
+			gameConf.use_image_scale_multi_thread = std::strtol(valbuf, nullptr, 10) > 0;
 		} else if (!std::strcmp(strbuf, "use_image_load_background_thread")) {
 			gameConf.use_image_load_background_thread = std::strtol(valbuf, nullptr, 10) > 0;
 		} else if(!std::strcmp(strbuf, "errorlog")) {
@@ -1459,6 +1461,7 @@ void Game::SaveConfig() {
 	char linebuf[CONFIG_LINE_SIZE];
 	std::fprintf(fp, "use_d3d = %d\n", gameConf.use_d3d ? 1 : 0);
 	std::fprintf(fp, "use_image_scale = %d\n", gameConf.use_image_scale ? 1 : 0);
+	std::fprintf(fp, "use_image_scale_multi_thread = %d\n", gameConf.use_image_scale_multi_thread ? 1 : 0);
 	std::fprintf(fp, "use_image_load_background_thread = %d\n", gameConf.use_image_load_background_thread ? 1 : 0);
 	std::fprintf(fp, "antialias = %d\n", gameConf.antialias);
 	std::fprintf(fp, "errorlog = %u\n", enable_log);

gframe/game.h

@@ -49,6 +49,7 @@ bool IsExtension(const char* filename, const char(&extension)[N]) {
 struct Config {
 	bool use_d3d{ false };
 	bool use_image_scale{ true };
+	bool use_image_scale_multi_thread{ true };
 	bool use_image_load_background_thread{ false };
 	unsigned short antialias{ 0 };
 	unsigned short serverport{ 7911 };

gframe/image_manager.cpp

@@ -138,7 +138,7 @@ void imageScaleNNAA(irr::video::IImage *src, irr::video::IImage *dest) {
 	const double rx = (double)srcDim.Width / destDim.Width;
 	const double ry = (double)srcDim.Height / destDim.Height;
 
-#pragma omp parallel
+#pragma omp parallel if(mainGame->gameConf.use_image_scale_multi_thread)
 {
 	double sx, sy, minsx, maxsx, minsy, maxsy, area, ra, ga, ba, aa, pw, ph, pa;
 	irr::video::SColor pxl, npxl;