Mac version of the fix. Not working at the moment.

It needs an implementation for `free_texture` in 4ed_metal_render.mm (like `get_texture_of_dim`, and `fill_texture`).

We also need to make sure that the texture (`handle` parameter in get_texture_of_dim and fill_texture) is not zero as the original fix expect 0 to signify "invalid texture". More specifically in `4ed_font_provider_freetyp.cpp` there is `if (texture) { fill the texture }`
and in `4ed_font_set.cpp` there is `if ( slot->face->texture != 0 ) { graphics_free_texture(...);}`

code/platform_mac/mac_4ed_functions.mm

@@ -976,6 +976,11 @@ graphics_fill_texture_sig(){
     return(result);
 }
 
+function
+graphics_free_texture_sig(){
+    renderer->free_texture(renderer, texid);
+}
+
 ////////////////////////////////
 
 /******************/

code/platform_mac/mac_4ed_metal.mm

@@ -44,6 +44,12 @@ mac_fill_texture_sig(mac_metal__fill_texture){
     return(result);
 }
 
+function
+mac_free_texture_sig(mac_metal__free_texture){
+    Mac_Metal *metal = (Mac_Metal*)renderer;
+    [metal->renderer free_texture:texture];
+}
+
 function Mac_Metal*
 mac_metal__init(NSWindow *window, Render_Target *target){
     // NOTE(yuval): Create the Mac Metal rendere
@@ -52,7 +58,8 @@ mac_metal__init(NSWindow *window, Render_Target *target){
     metal->base.render = mac_metal__render;
     metal->base.get_texture = mac_metal__get_texture;
     metal->base.fill_texture = mac_metal__fill_texture;
-
+    metal->base.free_texture = mac_metal__free_texture;
+    
     // NOTE(yuval): Create the Metal view
     NSView *content_view = [window contentView];
 

code/platform_mac/mac_4ed_opengl.mm

@@ -144,6 +144,11 @@ mac_fill_texture_sig(mac_gl__fill_texture){
     return(result);
 }
 
+function
+mac_free_texture_sig(mac_gl__free_texture){
+    gl__free_texture(texture);
+}
+
 function Mac_OpenGL*
 mac_gl__init(NSWindow *window, Render_Target *target){
     // NOTE(yuval): Create the Mac OpenGL Renderer
@@ -152,6 +157,7 @@ mac_gl__init(NSWindow *window, Render_Target *target){
     gl->base.render = mac_gl__render;
     gl->base.get_texture = mac_gl__get_texture;
     gl->base.fill_texture = mac_gl__fill_texture;
+    gl->base.free_texture = mac_gl__free_texture;
     
     // NOTE(yuval): Create the OpenGL view
     NSView *content_view = [window contentView];

code/platform_mac/mac_4ed_renderer.h

@@ -18,6 +18,9 @@ typedef mac_get_texture_sig(mac_get_texture_type);
 #define mac_fill_texture_sig(name) b32 name(Mac_Renderer *renderer, Texture_Kind texture_kind, u32 texture, Vec3_i32 p, Vec3_i32 dim, void* data)
 typedef mac_fill_texture_sig(mac_fill_texture_type);
 
+#define mac_free_texture_sig(name) void name(Mac_Renderer *renderer, u32 texture)
+typedef mac_free_texture_sig(mac_free_texture_type);
+
 typedef i32 Mac_Renderer_Kind;
 enum{
     MacRenderer_OpenGL,
@@ -31,6 +34,7 @@ struct Mac_Renderer{
     
     mac_get_texture_type *get_texture;
     mac_fill_texture_type *fill_texture;
+    mac_free_texture_type *free_texture;
 };
 
 ////////////////////////////////