From 8379c09e9c7d34e86235765c077a11b98841e749 Mon Sep 17 00:00:00 2001
From: Sergio Valor <jaildesigner@gmail.com>
Date: Mon, 24 Mar 2025 17:32:31 +0100
Subject: [PATCH] arreglat no se que merdes del pitch

---
 Makefile                     |  2 --
 source/demo1_pixels_wave.cpp | 22 +++++++++++++++++-----
 2 files changed, 17 insertions(+), 7 deletions(-)

diff --git a/Makefile b/Makefile
index 34e6479..e614bbb 100644
--- a/Makefile
+++ b/Makefile
@@ -9,8 +9,6 @@ OUTPUT_EXT      :=
 ifeq ($(OS),Windows_NT)
     LDFLAGS += -lmingw32 -lws2_32
     OUTPUT_EXT := .exe
-else
-    OUTPUT_EXT := .out
 endif
 
 # Regla principal: compilar el ejecutable
diff --git a/source/demo1_pixels_wave.cpp b/source/demo1_pixels_wave.cpp
index 209d372..bb19d26 100644
--- a/source/demo1_pixels_wave.cpp
+++ b/source/demo1_pixels_wave.cpp
@@ -4,7 +4,7 @@
 
 int main(int argc, char *argv[])
 {
-    SDL_Init(SDL_INIT_VIDEO | SDL_INIT_EVENTS);
+    SDL_Init(SDL_INIT_VIDEO);
 
     constexpr int WIDTH = 160;
     constexpr int HEIGHT = 160;
@@ -14,6 +14,7 @@ int main(int argc, char *argv[])
     SDL_Window *window = SDL_CreateWindow("pixels", WIDTH * ZOOM, HEIGHT * ZOOM, SDL_WINDOW_OPENGL);
     SDL_Renderer *renderer = SDL_CreateRenderer(window, nullptr);
     SDL_SetRenderLogicalPresentation(renderer, WIDTH, HEIGHT, SDL_LOGICAL_PRESENTATION_INTEGER_SCALE);
+    // SDL_SetDefaultTextureScaleMode(renderer, SDL_SCALEMODE_NEAREST);
     SDL_Texture *texture = SDL_CreateTexture(renderer, SDL_PIXELFORMAT_ARGB8888, SDL_TEXTUREACCESS_STREAMING, WIDTH, HEIGHT);
 
     Uint32 *pixels;
@@ -52,6 +53,7 @@ int main(int argc, char *argv[])
         // Dibuja el efecto
         float time = SDL_GetTicks() / 1000.0f;
         for (int j = -rad; j <= rad; j += 3)
+        {
             for (int i = -rad; i <= rad; i += 2)
             {
                 float dist = sqrt(i * i + j * j);
@@ -59,20 +61,30 @@ int main(int argc, char *argv[])
                 const int X = rad + i + dx;
                 const int Y = rad + j - z + dy;
                 if (X < WIDTH && Y < HEIGHT && X >= 0 && Y >= 0)
+                {
                     surface[X + Y * WIDTH] = 1;
+                }
             }
+        }
 
-        // Vuelca la surface a la textura
-        for (int i = 0; i < SIZE; ++i)
+        // El pitch se mide en bytes, entonces para acceder a cada fila:
+        int pixel_pitch = pitch / sizeof(Uint32);
+
+        for (int y = 0; y < HEIGHT; ++y)
         {
-            pixels[i] = paleta[surface[i]];
+            for (int x = 0; x < WIDTH; ++x)
+            {
+                const int INDEX_SURFACE = x + y * WIDTH;
+                const int INDEX_TEX = x + y * pixel_pitch;
+                pixels[INDEX_TEX] = paleta[surface[INDEX_SURFACE]];
+            }
         }
 
         SDL_UnlockTexture(texture);
         SDL_RenderTexture(renderer, texture, nullptr, nullptr);
         SDL_RenderPresent(renderer);
     }
-    
+
     SDL_DestroyTexture(texture);
     SDL_DestroyRenderer(renderer);
     SDL_DestroyWindow(window);