start

Makefile

@@ -0,0 +1,31 @@
+CC      := gcc
+CFLAGS  := -Wall -Wextra -g -fsanitize=address,undefined $(shell sdl2-config --cflags)
+LDFLAGS := $(shell sdl2-config --libs)
+TARGET  := main
+
+SRC_DIR := src
+BLD_DIR := build
+
+SRCS    := $(filter-out $(SRC_DIR)/main.c, $(wildcard $(SRC_DIR)/*.c))
+OBJS    := $(patsubst $(SRC_DIR)/%.c, $(BLD_DIR)/%.o, $(SRCS))
+
+.PHONY: all clean fclean re
+
+all: $(BLD_DIR) $(TARGET)
+
+$(BLD_DIR):
+	mkdir -p $(BLD_DIR)
+
+$(TARGET): $(OBJS) $(SRC_DIR)/main.c
+	$(CC) $(CFLAGS) $(SRC_DIR)/main.c $(OBJS) -o $(TARGET) $(LDFLAGS)
+
+$(BLD_DIR)/%.o: $(SRC_DIR)/%.c | $(BLD_DIR)
+	$(CC) $(CFLAGS) -c $< -o $@
+
+clean:
+	rm -rf $(BLD_DIR)
+
+fclean: clean
+	rm -f $(TARGET)
+
+re: fclean all

src/main.c

@@ -0,0 +1,71 @@
+#include "utils.h"
+#include <SDL2/SDL.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#define SEED (42)
+#define WIDTH (800)
+#define HEIGHT (600)
+
+t_flags process_args(int argc, char **argv) {
+  t_flags output_flags = {0};
+  if (argc <= 1)
+    return output_flags;
+  if (argv[1][0] != '-')
+    return output_flags;
+
+  char *flags = argv[1];
+  int i = 1;
+  char c = flags[i];
+  while (c) {
+    if (c == 'g')
+      output_flags.graphical = 1;
+    if (c == 'm')
+      output_flags.multithread = 1;
+    if (c == 'o')
+      output_flags.opti = 1;
+    c = flags[++i];
+  }
+  return output_flags;
+}
+
+int main(int argc, char *argv[]) {
+  t_flags flags = process_args(argc, argv);
+  if (flags.graphical) {
+    srand(SEED);
+
+    SDL_Init(SDL_INIT_VIDEO);
+
+    SDL_Window *win = SDL_CreateWindow("pixels", 0, 0, WIDTH, HEIGHT, 0);
+    SDL_Renderer *ren = SDL_CreateRenderer(win, -1, SDL_RENDERER_ACCELERATED);
+
+    SDL_Texture *tex =
+        SDL_CreateTexture(ren, SDL_PIXELFORMAT_ARGB8888,
+                          SDL_TEXTUREACCESS_STREAMING, WIDTH, HEIGHT);
+
+    uint32_t pixels[HEIGHT][WIDTH];
+    for (int y = 0; y < HEIGHT; y++)
+      for (int x = 0; x < WIDTH; x++)
+        pixels[y][x] = 0xFFFFFF00;
+    int running = 1;
+    SDL_Event e;
+    while (running) {
+      while (SDL_PollEvent(&e))
+        if (e.type == SDL_QUIT)
+          running = 0;
+
+      // Envoie la matrice à la texture
+      SDL_UpdateTexture(tex, NULL, pixels, WIDTH * sizeof(uint32_t));
+
+      SDL_RenderClear(ren);
+      SDL_RenderCopy(ren, tex, NULL, NULL);
+      SDL_RenderPresent(ren);
+    }
+    SDL_DestroyTexture(tex);
+    SDL_DestroyRenderer(ren);
+    SDL_DestroyWindow(win);
+    SDL_Quit();
+  }
+  return EXIT_SUCCESS;
+}

src/utils.h

@@ -0,0 +1,12 @@
+#ifndef UTILS_H
+#define UTILS_H
+
+typedef struct {
+  int graphical;
+  int multithread;
+  int opti;
+} t_flags;
+
+t_flags process_args(int argc, char *argv[]);
+
+#endif // !UTILS_H