generalization of deferred commands and any_gl rendering where appropriate

src/rendering/twn_fog.c

@@ -1,6 +1,8 @@
 #include "twn_draw.h"
 #include "twn_draw_c.h"
 
+#include <stb_ds.h>
+
 #include <stdbool.h>
 
 static float start_cache, end_cache, density_cache;
@@ -21,7 +23,17 @@ void apply_fog(void) {
     if (!fog_used)
         return;
 
-    finally_apply_fog(start_cache, end_cache, density_cache, color_cache);
+    DeferredCommand command = {
+        .type = DEFERRED_COMMAND_TYPE_APPLY_FOG,
+        .apply_fog = (DeferredCommandApplyFog){
+            .start = start_cache,
+            .end = end_cache,
+            .density = density_cache,
+            .color = color_cache
+        }
+    };
+
+    arrpush(deferred_commands, command);
 }
 
 
@@ -29,5 +41,9 @@ void pop_fog(void) {
     if (!fog_used)
         return;
 
-    finally_pop_fog();
+    DeferredCommand command = {
+        .type = DEFERRED_COMMAND_TYPE_POP_FOG,
+    };
+
+    arrpush(deferred_commands, command);
 }