Fix buffer overflow

1 files changed, 13 insertions, 6 deletions

diff --git a/reduced_system_layer.c b/reduced_system_layer.c
index 3d6a08d..ab2b591 100755
--- a/reduced_system_layer.c
+++ b/reduced_system_layer.c
@@ -111,9 +111,6 @@
 #/    - macOS support
 #/    - Mobile devices support
 #/
-#/  Bugs
-#/  - Buffer overflow after resizing the window.
-#/
 #/  Done
 #/
 #/  - Examples
@@ -252,7 +249,7 @@ i32 main(i32 argc, c8 **argv);
 #endif
 
 #ifndef STATIC_MEMORY_BUFFER_SIZE
-#define STATIC_MEMORY_BUFFER_SIZE (20 * 1024 * 1024)
+#define STATIC_MEMORY_BUFFER_SIZE (40 * 1024 * 1024)
 #endif
 
 #ifndef MEMORY_CHUNK_SIZE
@@ -3383,17 +3380,27 @@ void render_main_window_frame(void) {
 
   update_main_window_frame_();
 
+  i64 size = g_platform.frame_width * g_platform.frame_height;
+  if (size > g_platform.num_pixels)
+    size = g_platform.num_pixels;
+
   if (g_platform.frame_width == _image.width && g_platform.frame_height == _image.height) {
-    i64 size = g_platform.frame_width * g_platform.frame_height;
+    if (size > _pixels_internal_len)
+      size = _pixels_internal_len;
     for (i64 i = 0; i < size; ++i)
       _pixels_internal[i] = rgb_u32_from_f32_((vec3_f32) { g_platform.pixels[i].x, g_platform.pixels[i].y, g_platform.pixels[i].z });
   } else {
-    i64 size = g_platform.frame_width * g_platform.frame_height;
+    if (size > _pixels_scaled_len)
+      size = _pixels_scaled_len;
     for (i64 i = 0; i < size; ++i)
       _pixels_scaled[i] = rgb_u32_from_f32_((vec3_f32) { g_platform.pixels[i].x, g_platform.pixels[i].y, g_platform.pixels[i].z });
 
     for (i64 j = 0; j < _image.height; ++j) {
+      if ((j + 1) * _image.width > _pixels_internal_len)
+        break;
       i64 j0 = (j * g_platform.frame_height) / _image.height;
+      if ((j0 + 1) * g_platform.frame_width > _pixels_scaled_len)
+        break;
       for (i64 i = 0; i < _image.width; ++i) {
         i64 i0 = (i * g_platform.frame_width) / _image.width;
         _pixels_internal[j * _image.width + i] = _pixels_scaled[j0 * g_platform.frame_width + i0];