Fix font rendering on mac

code/4ed_font_provider_freetype.cpp

@@ -330,6 +330,13 @@ ft__font_make_face(Arena *arena, Face_Description *description, f32 scale_factor
         Texture_Kind texture_kind = TextureKind_Mono;
         u32 texture = graphics_get_texture(pack.dim, texture_kind);
 
+        /* NOTE simon (06/01/25): This assumes that every platforms don't use 0 as a valid texture id.
+        This is valid for OpenGL and the DX11 implementaion. Someone needs to check the MAC versions. */
+        if (texture != 0 ){
+
+            face->texture_kind = texture_kind;
+            face->texture = texture;
+
             Vec3_f32 texture_dim = V3f32(pack.dim);
             face->texture_dim = texture_dim;
 
@@ -341,7 +348,6 @@ ft__font_make_face(Arena *arena, Face_Description *description, f32 scale_factor
                 face->white.uv.y1 = (face->white.uv.y0 + face->white.uv.y1)/texture_dim.y;
                 face->white.uv.x0 =  face->white.uv.x0/texture_dim.x;
                 face->white.uv.y0 =  face->white.uv.y0/texture_dim.y;
-            face->white.w /= texture_dim.z;
             }
 
             for (u16 i = 0; i < index_count; i += 1){
@@ -380,6 +386,11 @@ ft__font_make_face(Arena *arena, Face_Description *description, f32 scale_factor
                                        26*met->normal_uppercase_advance +
                                        10*met->decimal_digit_advance)/62.f;
             }
+
+        } else {
+            pop_array(arena, Face, 1);
+            face = 0;
+        }
     }
 
     FT_Done_FreeType(ft);
@@ -388,4 +399,3 @@ ft__font_make_face(Arena *arena, Face_Description *description, f32 scale_factor
 }
 
 // BOTTOM
-

code/metal/4ed_metal_render.mm

@@ -57,7 +57,7 @@ struct Metal_Texture_Slot_List{
     Metal_Texture_Slot *last_free_slot;
 };
 
-global_const u32 metal__invalid_texture_slot_locator = (u32)-1;
+global_const u32 metal__invalid_texture_slot_locator = 0;
 
 ////////////////////////////////
 
@@ -67,6 +67,7 @@ global_const u32 metal__invalid_texture_slot_locator = (u32)-1;
 - (u32)get_texture_of_dim:(Vec3_i32)dim kind:(Texture_Kind)kind;
 - (b32)fill_texture:(u32)texture kind:(Texture_Kind)kind pos:(Vec3_i32)p dim:(Vec3_i32)dim data:(void*)data;
 - (void)bind_texture:(u32)handle encoder:(id<MTLRenderCommandEncoder>)render_encoder;
+- (void)free_texture:(u32)handle;
 - (Metal_Texture_Slot*)get_texture_slot_at_locator:(Metal_Texture_Slot_Locator)locator;
 - (Metal_Texture_Slot*)get_texture_slot_at_handle:(u32)handle;
 
@@ -284,6 +285,11 @@ metal__make_buffer(u32 size, id<MTLDevice> device){
     // NOTE(yuval): Initialize the texture slot list
     block_zero_struct(&_texture_slots);
 
+    // NOTE(simon): Other platforms use 0 as invalid handle, so we allocate the first texture here (it should be 0),
+    // and never use it so we can use 0 as the invalid handle.
+    u32 reserved_texture_slot_do_not_use = [self get_texture_of_dim:V3i32(2, 2, 1) kind:TextureKind_Mono];
+    Assert( reserved_texture_slot_do_not_use == 0 );
+
     // NOTE(yuval): Create the fallback texture
     _target->fallback_texture_id = [self get_texture_of_dim:V3i32(2, 2, 1)
             kind:TextureKind_Mono];
@@ -565,6 +571,14 @@ metal__make_buffer(u32 size, id<MTLDevice> device){
     }
 }
 
+- (void)free_texture:(u32)handle{
+    Metal_Texture_Slot *texture_slot = [self get_texture_slot_at_handle:handle];
+    if (texture_slot){
+        sll_queue_push(_texture_slots.first_free_slot, _texture_slots.last_free_slot, texture_slot);
+    }
+}
+
+
 - (Metal_Texture_Slot*)get_texture_slot_at_locator:(Metal_Texture_Slot_Locator)locator{
     Metal_Texture_Slot *result = 0;