1 files changed, 1 insertions, 0 deletions

diff --git a/gfx-iso/app/app.h b/gfx-iso/app/app.h
index 160da47..25e55eb 100644
--- a/gfx-iso/app/app.h
+++ b/gfx-iso/app/app.h
@@ -4,6 +4,7 @@ typedef struct IsoGfx    IsoGfx;
 typedef struct IsoGfxApp IsoGfxApp;
 
 typedef struct IsoGfxApp {
+  int   pixel_scale; // 0 or 1 for 1:1 scale.
   void* state;
   void (*shutdown)(IsoGfx*, void* state);
   void (*update)(IsoGfx*, void* state, double t, double dt);