diff --git a/include/twn_util.h b/include/twn_util.h
index eb3ff4a..57cc577 100644
--- a/include/twn_util.h
+++ b/include/twn_util.h
@@ -170,4 +170,9 @@ static inline t_fvec2 fast_cossine(float a) {
     };
 }
 
+static inline bool is_power_of_two(int x)
+{
+    return (x != 0) && ((x & (x - 1)) == 0);
+}
+
 #endif
diff --git a/src/twn_textures.c b/src/twn_textures.c
index 48fbe5c..270bf77 100644
--- a/src/twn_textures.c
+++ b/src/twn_textures.c
@@ -1,6 +1,7 @@
 #include "twn_textures_c.h"
 #include "twn_config.h"
 #include "twn_util.h"
+#include "twn_engine_context_c.h"
 
 #include <SDL2/SDL.h>
 #include <physfs.h>
@@ -342,6 +343,12 @@ static t_texture_key textures_load(struct texture_cache *cache, const char *path
 
     /* it's a "loner texture," it doesn't fit in an atlas so it's not in one */
     if (surface->w >= TEXTURE_ATLAS_SIZE || surface->h >= TEXTURE_ATLAS_SIZE) {
+        if (ctx.game.debug) {
+            if (surface->w > TEXTURE_ATLAS_SIZE || surface->h > TEXTURE_ATLAS_SIZE)
+                log_warn("Unportable texture dimensions for %s, use 2048x2048 at max", path);
+            if (!is_power_of_two(surface->w) || !is_power_of_two(surface->h))
+                log_warn("Unportable texture dimensions for %s, should be powers of 2", path);
+        }
         new_texture.loner_texture = create_gpu_texture(TEXTURE_FILTER_NEAREAST, true);
         upload_texture_from_surface(new_texture.loner_texture, surface); 
         new_texture.srcrect = (t_frect) { .w = (float)surface->w, .h = (float)surface->h };