sprites.c: add commentsHEADmaster

1 files changed, 4 insertions, 3 deletions

diff --git a/src/sdl/sprites.c b/src/sdl/sprites.c
index 4f3360d..6fe8df0 100644
--- a/src/sdl/sprites.c
+++ b/src/sdl/sprites.c
@@ -18,17 +18,18 @@ sprite_set_init(
   const asset_id_t asset_id
 ) {
   sprite_set_t set;
+
   // get asset
   const asset_t * const asset = asset_get(asset_id);
 
-  // load image
+  // load backing image data
   int im_w, im_h;
   set.im_data = stbi_load_from_memory(asset->buf, asset->len, &im_w, &im_h, NULL, 4);
   if (!set.im_data) {
     die("stbi_load(): %s", stbi_failure_reason());
   }
 
-  // create surface
+  // create surface from backing image data
   set.surface = SDL_CreateRGBSurfaceWithFormatFrom(set.im_data, im_w, im_h, 32, 4 * im_w, SDL_PIXELFORMAT_RGBA32);
   if (!set.surface) {
     die("SDLCreateRGBSurfaceFrom(): %s", SDL_GetError());
@@ -45,7 +46,7 @@ sprite_set_fini(
   // free main surface
   SDL_FreeSurface(set->surface);
 
-  // free image data
+  // free backing image data
   stbi_image_free(set->im_data);
 }