From f15aad0c2ebe67acc9cea01e04078308141a0d44 Mon Sep 17 00:00:00 2001
From: tTh <tth@redlady.dinorama.fr>
Date: Sat, 7 Sep 2024 15:36:26 +0200
Subject: [PATCH] =?UTF-8?q?d=C3=A9couverte=20de=20SDL2?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 code/SDL2/.gitignore    |  1 +
 code/SDL2/Makefile      |  4 ++++
 code/SDL2/README.md     | 11 +++++++++++
 code/SDL2/strangebug.c  | 40 ++++++++++++++++++++++++++++++++++++++++
 code/SDL2/strangebug.md | 11 +++++++++++
 5 files changed, 67 insertions(+)
 create mode 100644 code/SDL2/.gitignore
 create mode 100644 code/SDL2/Makefile
 create mode 100644 code/SDL2/README.md
 create mode 100644 code/SDL2/strangebug.c
 create mode 100644 code/SDL2/strangebug.md

diff --git a/code/SDL2/.gitignore b/code/SDL2/.gitignore
new file mode 100644
index 0000000..43cb6d8
--- /dev/null
+++ b/code/SDL2/.gitignore
@@ -0,0 +1 @@
+strangebug
diff --git a/code/SDL2/Makefile b/code/SDL2/Makefile
new file mode 100644
index 0000000..23f8ed3
--- /dev/null
+++ b/code/SDL2/Makefile
@@ -0,0 +1,4 @@
+
+
+strangebug:	strangebug.c Makefile
+	gcc -Wall $< -lSDL2 -o $@
diff --git a/code/SDL2/README.md b/code/SDL2/README.md
new file mode 100644
index 0000000..7946a78
--- /dev/null
+++ b/code/SDL2/README.md
@@ -0,0 +1,11 @@
+# Simple DirectMedia Layer
+
+
+
+The *[Simple DirectMedia Layer](https://libsdl.org/) 
+is a cross-platform development library designed
+to provide low level access to audio, keyboard, mouse, joystick, and
+graphics hardware via OpenGL/Direct3D/Metal/Vulkan.*
+
+Paf, premier essai, [premier souci](strangebug.md) **:)**
+
diff --git a/code/SDL2/strangebug.c b/code/SDL2/strangebug.c
new file mode 100644
index 0000000..02ef810
--- /dev/null
+++ b/code/SDL2/strangebug.c
@@ -0,0 +1,40 @@
+/*
+ *	Strange Bug ?
+ */
+
+#include   <stdio.h>
+#include   <stdlib.h>
+#include   <unistd.h>
+#include   <SDL2/SDL.h>
+
+int main(int argc, char *argv[])
+{
+SDL_Window	*win;
+SDL_Renderer	*rend;
+int		idx, idy;
+
+if(SDL_CreateWindowAndRenderer(256, 256, SDL_WINDOW_SHOWN, &win, &rend))
+	{
+	fprintf(stderr, "Err SDL_CreateWindowAndRenderer : %s", SDL_GetError());
+        exit(1);
+	}
+SDL_SetRenderDrawColor(rend, 255, 0, 0, 0);
+SDL_RenderClear(rend);
+SDL_RenderPresent(rend);
+
+for (idx=0; idx<256; idx++) {
+	for (idy=0; idy<256; idy++) {
+		SDL_SetRenderDrawColor(rend, 127, idx, idy, 0);
+		SDL_RenderDrawPoint(rend, idx, idy);
+		}
+	SDL_RenderPresent(rend);
+	// SDL_Delay(50);		/* Is the bug here ? */
+	}
+SDL_RenderPresent(rend);
+sleep(30);
+
+SDL_DestroyRenderer(rend);
+SDL_DestroyWindow(win);
+
+return 0;
+}
\ No newline at end of file
diff --git a/code/SDL2/strangebug.md b/code/SDL2/strangebug.md
new file mode 100644
index 0000000..9641c0c
--- /dev/null
+++ b/code/SDL2/strangebug.md
@@ -0,0 +1,11 @@
+# `strangebug`, ou le bug étrange
+
+Pour mes premiers pas dans la sdl, j'ai voulu faire un gradient de couleur
+dans une petite fenêtre, quelque chose de vraiment simple, me diriez-vous,
+mais qui cache une chose étrange...
+
+Voici le [Code source](strangebug.c). Si vous décommentez la ligne
+marquée, seul une colonne sur deux est correctement tracée...
+
+*Please explain*.
+