implemented shaders, gradients, and uv mapping

primatives/rectangle.cpp

@@ -6,6 +6,9 @@
 #include "../helpers.cpp"
 #include "../buffer.cpp"
 #include "../shaders/shader.cpp"
+#include "../shaders/colorshader.cpp"
+#include "../shaders/gradientshader.cpp"
+#include "../mapper.cpp"
 
 namespace UwU {
   // rectangle
@@ -24,11 +27,14 @@ namespace UwU {
       uint16_t y1;
       
       // Draw a rectangle
-      void draw (Buffer buffer, Shader shader) {
+      void draw (Buffer buffer, Mapper mapper, Shader& shader) {
+        // printf("color: %u, %u, %u, %u", shader.color().r, shader.color().g, shader.color().b, shader.color().a);
         if (x0 > buffer.width || y0 > buffer.height || x1 > buffer.width || y1 > buffer.height) {return;};
+        Coord2 uv = Coord2();
         for (uint16_t y = y0; y < y1; y++) {
           for (uint16_t x = x0; x < x1; x++) {
-            buffer.drawPixelShader(Coord2(x, y), shader);
+            uv = mapper.map(Coord2(x, y));
+            buffer.drawPixelShader(x, y, uv.x, uv.y, shader);
           }
         }
         return;