we can see a quad

src/lib/bitmap.hpp

@@ -7,13 +7,24 @@
 
 #include <type_traits>
 #include <vector>
+#include <cassert>
 
 namespace paradiso {
 struct Bitmap final {
-    constexpr static Bitmap create(Size size) noexcept {
+
+    constexpr static Bitmap empty(Size size) noexcept {
         return {.size = size, .data = std::vector<RGBA>{size.area()}};
     }
 
+    template <typename... Arguments>
+    static constexpr Bitmap from_data(Size size, Arguments... values) noexcept {
+        assert(sizeof...(Arguments) == size.height * size.width);
+        return {
+            .size = size,
+            .data = {values...}
+            };
+    }
+
     constexpr auto fill(const RGBA& color) noexcept {
         std::fill(data.begin(), data.end(), color);
         return *this;