LDKMaterialInstance
typedef struct LDKMaterialInstance{
LDKAssetTextureAtlas atlas;
u64 sprite_id;
LDKAssetTextureAtlas cached_atlas;
u64 cached_revision;
u64 cached_sprite_id;
u64 cached_default_sprite_id;
u32 cached_image_width;
u32 cached_image_height;
Vec4 cached_uv_rect;
bool cached_drawable;
bool cache_valid;
}LDKMaterialInstance;