1 files changed, 20 insertions, 0 deletions
diff --git a/src/main/c/simple_graphics.h b/src/main/c/simple_graphics.h
new file mode 100644
index 00000000..370256be
--- /dev/null
+++ b/src/main/c/simple_graphics.h
@@ -0,0 +1,20 @@
+#ifndef SIMPLE_GRAPHICS_H
+#define SIMPLE_GRAPHICS_H
+#include <stdint.h>
+
+// Private, versioned boundary between the tiny runtime loader and MiniFB.
+// All calls run on the main thread. Pixel memory is borrowed for present only.
+struct simple_graphics_api {
+    int32_t version;
+    int32_t (*open)(const char *, uint32_t, uint32_t);
+    int32_t (*present)(const uint32_t *, uint32_t);
+    int32_t (*poll)(int32_t);
+    int32_t (*mouse_x)(void);
+    int32_t (*mouse_y)(void);
+    int32_t (*button)(int32_t);
+    int32_t (*key)(int32_t);
+    void (*close)(void);
+    int32_t (*wait)(int64_t);
+};
+#define SIMPLE_GRAPHICS_VERSION 2
+#endif