From f6210b79c793d27d0bac12a83a18445759e8447c Mon Sep 17 00:00:00 2001
From: Sergio Valor Martinez <jaildesigner@gmail.com>
Date: Mon, 5 Feb 2024 13:51:34 +0100
Subject: [PATCH] Primer commit

---
 .gitignore |  1 +
 Makefile   |  9 +++++++++
 paleta.cpp | 49 +++++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 59 insertions(+)
 create mode 100644 .gitignore
 create mode 100644 Makefile
 create mode 100644 paleta.cpp

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..1530978
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+*.o
\ No newline at end of file
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..ee5090c
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,9 @@
+name = paleta
+executable = $(name).o
+source = $(name).cpp
+
+linux:
+	g++ $(source) -std=c++11 -Wall -Os -lSDL2 -o "$(executable)"
+
+macos:
+	clang++ $(source) -std=c++11 -Wall -Os -lSDL2 -ffunction-sections -fdata-sections -o $(executable)
\ No newline at end of file
diff --git a/paleta.cpp b/paleta.cpp
new file mode 100644
index 0000000..ecd28e6
--- /dev/null
+++ b/paleta.cpp
@@ -0,0 +1,49 @@
+#include <SDL2/SDL.h>
+
+struct ARGB
+{
+    Uint8 b, g, r, a;
+};
+
+int main(int argc, char *argv[])
+{
+    SDL_Init(SDL_INIT_EVERYTHING);
+
+    SDL_Window *w = SDL_CreateWindow("pixels", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, 640, 480, SDL_WINDOW_SHOWN);
+    SDL_Renderer *r = SDL_CreateRenderer(w, -1, 0);
+    SDL_RenderSetLogicalSize(r, 320, 240);
+    SDL_Texture *t = SDL_CreateTexture(r, SDL_PIXELFORMAT_ARGB8888, SDL_TEXTUREACCESS_STREAMING, 320, 240);
+
+    ARGB *pixels;
+    int pitch;
+
+    SDL_Event sdlEvent;
+    bool exit = false;
+    while (!exit)
+    {
+        while (SDL_PollEvent(&sdlEvent))
+        {
+            if (sdlEvent.type == SDL_QUIT)
+            {
+                exit = true;
+                break;
+            }
+        }
+
+        SDL_LockTexture(t, nullptr, (void **)&pixels, &pitch);
+
+        for (int i = 0; i < 76800; ++i)
+        {
+            pixels[i].b = rand() % 256;
+            pixels[i].g = rand() % 256;
+            pixels[i].r = rand() % 256;
+            pixels[i].a = 255;
+        }
+
+        SDL_UnlockTexture(t);
+
+        SDL_RenderCopy(r, t, nullptr, nullptr);
+
+        SDL_RenderPresent(r);
+    }
+}
\ No newline at end of file