Backdrop Path + Cybersteel (#23)

Co-authored-by: Zachary Levy <zachary@sunforge.is>
Reviewed-on: #23

draw/text.odin

@@ -8,21 +8,25 @@ import sdl_ttf "vendor:sdl3/ttf"
 
 Font_Id :: u16
 
+//INTERNAL
 Font_Key :: struct {
 	id:   Font_Id,
 	size: u16,
 }
 
+//INTERNAL
 Cache_Source :: enum u8 {
 	Custom,
 	Clay,
 }
 
+//INTERNAL
 Cache_Key :: struct {
 	id:     u32,
 	source: Cache_Source,
 }
 
+//INTERNAL
 Text_Cache :: struct {
 	engine:     ^sdl_ttf.TextEngine,
 	font_bytes: [dynamic][]u8,
@@ -30,7 +34,8 @@ Text_Cache :: struct {
 	cache:      map[Cache_Key]^sdl_ttf.Text,
 }
 
-// Internal for fetching SDL TTF font pointer for rendering
+// Fetch SDL TTF font pointer for rendering.
+//INTERNAL
 get_font :: proc(id: Font_Id, size: u16) -> ^sdl_ttf.Font {
 	assert(int(id) < len(GLOB.text_cache.font_bytes), "Invalid font ID.")
 	key := Font_Key{id, size}
@@ -77,6 +82,7 @@ register_font :: proc(bytes: []u8) -> (id: Font_Id, ok: bool) #optional_ok {
 	return Font_Id(len(GLOB.text_cache.font_bytes) - 1), true
 }
 
+//INTERNAL
 Text :: struct {
 	sdl_text: ^sdl_ttf.Text,
 	position: Vec2,
@@ -89,7 +95,7 @@ Text :: struct {
 
 // Shared cache lookup/create/update logic used by both the `text` proc and the Clay render path.
 // Returns the cached (or newly created) TTF_Text pointer.
-@(private)
+//INTERNAL
 cache_get_or_update :: proc(key: Cache_Key, c_str: cstring, font: ^sdl_ttf.Font) -> ^sdl_ttf.Text {
 	existing, found := GLOB.text_cache.cache[key]
 	if !found {
@@ -268,7 +274,8 @@ clear_text_cache_entry :: proc(id: u32) {
 // ----- Internal cache lifecycle ------
 // ---------------------------------------------------------------------------------------------------------------------
 
-@(private, require_results)
+//INTERNAL
+@(require_results)
 init_text_cache :: proc(
 	device: ^sdl.GPUDevice,
 	allocator := context.allocator,
@@ -299,6 +306,7 @@ init_text_cache :: proc(
 	return text_cache, true
 }
 
+//INTERNAL
 destroy_text_cache :: proc() {
 	for _, font in GLOB.text_cache.sdl_fonts {
 		sdl_ttf.CloseFont(font)