From 699072aa8619a6202d08efe3cec745247be0f1fe Mon Sep 17 00:00:00 2001
From: Stefan Arentz <stefan@arentz.ca>
Date: Sun, 1 Oct 2017 11:08:23 -0400
Subject: [PATCH] Fixes #170 - Create a benchmark for tty.c

---
 src/Makefile   | 12 ++++++++--
 src/tty_test.c | 59 ++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 69 insertions(+), 2 deletions(-)
 create mode 100644 src/tty_test.c

diff --git a/src/Makefile b/src/Makefile
index 1b95ecb..817da3d 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -56,6 +56,11 @@ SCR_TEST_SOURCES=cpu.c ins.c mem.c fmt.c two.c scr.c dsk.c chr.c alc.c utl.c scr
 SCR_TEST_OBJECTS=$(SCR_TEST_SOURCES:.c=.o)
 SCR_TEST_LIBS=-lSDL2 $(LUA_LIBS)
 
+TTY_TEST_EXECUTABLE=tty_test
+TTY_TEST_SOURCES=cpu.c ins.c mem.c fmt.c one.c tty.c pia.c chr.c utl.c tty_test.c lua.c
+TTY_TEST_OBJECTS=$(TTY_TEST_SOURCES:.c=.o)
+TTY_TEST_LIBS=-lSDL2 $(LUA_LIBS)
+
 CPU_BENCH=cpu_bench
 CPU_BENCH_SOURCES=cpu.c ins.c mem.c fmt.c utl.c cpu_bench.c lua.c
 CPU_BENCH_OBJECTS=$(CPU_BENCH_SOURCES:.c=.o)
@@ -66,10 +71,10 @@ MEM_BENCH_SOURCES=cpu.c ins.c mem.c fmt.c utl.c mem_bench.c lua.c
 MEM_BENCH_OBJECTS=$(MEM_BENCH_SOURCES:.c=.o)
 MEM_BENCH_LIBS=$(LUA_LIBS)
 
-all: $(EWM_SOURCES) $(EWM_EXECUTABLE) $(CPU_TEST_SOURCES) $(CPU_TEST_EXECUTABLE) $(SCR_TEST_EXECUTABLE) $(CPU_BENCH) $(MEM_BENCH)
+all: $(EWM_SOURCES) $(EWM_EXECUTABLE) $(CPU_TEST_SOURCES) $(CPU_TEST_EXECUTABLE) $(SCR_TEST_EXECUTABLE) $(TTY_TEST_EXECUTABLE) $(CPU_BENCH) $(MEM_BENCH)
 
 clean:
-	rm -f $(EWM_OBJECTS) $(EWM_EXECUTABLE) $(CPU_TEST_OBJECTS) $(CPU_TEST_EXECUTABLE) $(SCR_TEST_OBJECTS) $(SCR_TEST_EXECUTABLE) $(CPU_BENCH) $(MEM_BENCH)
+	rm -f $(EWM_OBJECTS) $(EWM_EXECUTABLE) $(CPU_TEST_OBJECTS) $(CPU_TEST_EXECUTABLE) $(SCR_TEST_OBJECTS) $(SCR_TEST_EXECUTABLE) $(TTY_TEST_EXECUTABLE) $(CPU_BENCH) $(MEM_BENCH)
 
 $(EWM_EXECUTABLE): $(EWM_OBJECTS)
 	$(CC) $(LDFLAGS) $(EWM_OBJECTS) $(EWM_LIBS) -o $@
@@ -80,6 +85,9 @@ $(CPU_TEST_EXECUTABLE): $(CPU_TEST_OBJECTS)
 $(SCR_TEST_EXECUTABLE): $(SCR_TEST_OBJECTS)
 	$(CC) $(LDFLAGS) $(SCR_TEST_OBJECTS) $(SCR_TEST_LIBS) -o $@
 
+$(TTY_TEST_EXECUTABLE): $(TTY_TEST_OBJECTS)
+	$(CC) $(LDFLAGS) $(TTY_TEST_OBJECTS) $(TTY_TEST_LIBS) -o $@
+
 $(CPU_BENCH): $(CPU_BENCH_OBJECTS)
 	$(CC) $(LDFLAGS) $(CPU_BENCH_OBJECTS) $(CPU_BENCH_LIBS) -o $@
 
diff --git a/src/tty_test.c b/src/tty_test.c
new file mode 100644
index 0000000..d153e10
--- /dev/null
+++ b/src/tty_test.c
@@ -0,0 +1,59 @@
+
+#include <stdio.h>
+#include <unistd.h>
+
+#include "one.h"
+#include "tty.h"
+
+void test(struct ewm_tty_t *tty) {
+   // TODO Setup
+
+   for (int i = 0; i < (EWM_ONE_TTY_ROWS * EWM_ONE_TTY_COLUMNS); i++) {
+      tty->screen_buffer[i] = 32 + (rand() % 64);
+   }
+
+   Uint64 start = SDL_GetPerformanceCounter();
+   for (int i = 0; i < 1000; i++) {
+      SDL_SetRenderDrawColor(tty->renderer, 0, 0, 0, 255);
+      SDL_RenderClear(tty->renderer);
+      ewm_tty_refresh(tty, 1, EWM_ONE_FPS);
+      SDL_RenderPresent(tty->renderer);
+   }
+   Uint64 now = SDL_GetPerformanceCounter();
+   double total = (double)((now - start)*1000) / SDL_GetPerformanceFrequency();
+   double per_screen = total / 1000.0;
+
+   printf("%-20s %.3f/refresh\n", "tty", per_screen);
+}
+
+int main() {
+   if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_TIMER | SDL_INIT_EVENTS) < 0) {
+      fprintf(stderr, "Failed to initialize SDL: %s\n", SDL_GetError());
+      return 1;
+   }
+
+   SDL_Window *window = SDL_CreateWindow("ewm - tty_test", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, 280*3, 192*3, SDL_WINDOW_SHOWN);
+   if (window == NULL) {
+      fprintf(stderr, "Failed create window: %s\n", SDL_GetError());
+      return 1;
+   }
+
+   SDL_Renderer *renderer = SDL_CreateRenderer(window, -1, SDL_RENDERER_ACCELERATED);
+   if (renderer == NULL) {
+      fprintf(stderr, "Failed to create renderer: %s\n", SDL_GetError());
+      return 1;
+   }
+
+   SDL_RenderSetLogicalSize(renderer, 280*3, 192*3);
+
+   sleep(3);
+
+   struct ewm_one_t *one = ewm_one_create(EWM_ONE_MODEL_APPLE1, renderer);
+   test(one->tty);
+
+   SDL_DestroyWindow(window);
+   SDL_DestroyRenderer(renderer);
+   SDL_Quit();
+
+   return 0;
+}