add handle def macro

3 files changed, 17 insertions, 6 deletions

diff --git a/src/defines.h b/src/defines.h
index 79b735d..52aa7b0 100644
--- a/src/defines.h
+++ b/src/defines.h
@@ -42,6 +42,13 @@ _Static_assert(sizeof(ptrdiff_t) == 8, "");
 
 #define alignof(x) _Alignof(x)
 
+// Wrap a u32 to make a type-safe "handle" or ID
+#define CORE_DEFINE_HANDLE(name) \
+  typedef struct name name;      \
+  struct name {                  \
+    u32 raw;                     \
+  }
+
 /*
 Possible platform defines:
 #define CEL_PLATFORM_LINUX 1
diff --git a/src/renderer/render_types.h b/src/renderer/render_types.h
index 896a1a5..a3639e7 100644
--- a/src/renderer/render_types.h
+++ b/src/renderer/render_types.h
@@ -12,6 +12,16 @@
 
 struct GLFWwindow;
 
+#ifndef RESOURCE_HANDLE_DEFS
+CORE_DEFINE_HANDLE(texture_handle);
+#define RESOURCE_HANDLE_DEFS
+#endif
+
+/* @brief Opaque wrapper around a shader program */
+typedef struct shader {
+  u32 program_id;
+} shader;
+
 /** @brief configuration passed to the renderer at init time */
 typedef struct renderer_config {
   char window_name[256];
diff --git a/src/systems/text.h b/src/systems/text.h
index 3c580df..19248a6 100644
--- a/src/systems/text.h
+++ b/src/systems/text.h
@@ -10,12 +10,6 @@
 #include "render_types.h"
 
 struct core;
-typedef struct texture_handle {
-  u32 raw
-} texture_handle;
-typedef struct shader {
-  u32 raw
-} shader;
 
 /** @brief internal font struct */
 typedef struct font {