M CMakeLists.txt → CMakeLists.txt

@@ -4,6 +4,7 @@ set(BINARY_NAME gbac CACHE INTERNAL "Name of output binaries")
 set(CMAKE_C_FLAGS_DEBUG "-g -Wall -Wextra -Wno-error=type-limits --std=gnu99")
 set(CMAKE_C_FLAGS_RELEASE "-O3 -Wall -Wextra --std=gnu99")
 set(USE_DEBUGGER ON CACHE BOOL "Whether or not to enable the ARM debugger")
+set(EXTRA_LIB "")
 file(GLOB ARM_SRC ${CMAKE_SOURCE_DIR}/src/arm/*.c)
 file(GLOB GBA_SRC ${CMAKE_SOURCE_DIR}/src/gba/*.c)
 file(GLOB UTIL_SRC ${CMAKE_SOURCE_DIR}/src/util/*.c)
@@ -42,7 +43,8 @@ endif()
 
 if(BUILD_PERF)
 	set(MAIN_SRC ${CMAKE_SOURCE_DIR}/src/platform/perf-main.c)
+	set(EXTRA_LIB ${EXTRA_LIB} rt)
 endif()
 
 add_executable(${BINARY_NAME} ${ARM_SRC} ${GBA_SRC} ${DEBUGGER_SRC} ${RENDERER_SRC} ${UTIL_SRC} ${PLATFORM_SRC} ${MAIN_SRC})
-target_link_libraries(${BINARY_NAME} m pthread ${DEBUGGER_LIB} ${SDL_LIBRARY} ${OPENGL_LIBRARY})
+target_link_libraries(${BINARY_NAME} m pthread ${DEBUGGER_LIB} ${SDL_LIBRARY} ${OPENGL_LIBRARY} ${EXTRA_LIB})

M src/platform/perf-main.c → src/platform/perf-main.c

@@ -62,9 +62,25 @@ return 0;
 }
 
 static void _GBAPerfRunloop(struct GBAThread* context, int* frames) {
+	struct timespec lastEcho;
+	clock_gettime(CLOCK_REALTIME, &lastEcho);
+	int lastFrames = 0;
 	while (context->state < THREAD_EXITING) {
 		if (GBASyncWaitFrameStart(&context->sync, 0)) {
 			++*frames;
+			++lastFrames;
+			struct timespec currentTime;
+			long timeDiff;
+			clock_gettime(CLOCK_REALTIME, &currentTime);
+			timeDiff = currentTime.tv_sec - lastEcho.tv_sec;
+			timeDiff *= 1000;
+			timeDiff += (currentTime.tv_nsec - lastEcho.tv_nsec) / 1000000;
+			if (timeDiff >= 1000) {
+				printf("\033[2K\rCurrent FPS: %g (%gx)", lastFrames / (timeDiff / 1000.0f), lastFrames / (float) (60 * (timeDiff / 1000.0f)));
+				fflush(stdout);
+				lastEcho = currentTime;
+				lastFrames = 0;
+			}
 		}
 		GBASyncWaitFrameEnd(&context->sync);
 	}