fix: reduced ram usage

rendertarget.hpp

@@ -10,22 +10,20 @@ class Rendertarget {
     const int height;
 
     Rendertarget(int width, int height) : width(width), height(height) {
-        pixels = new decimal[width * height * 3];
+        pixels = new uint8_t[width * height * 3];
         depth = new decimal[width * height];
+        for (int i = 0; i < width * height * 3; i++) {
+            pixels[i] = 0;
+        }
     }
 
     void set(int x, int y, vec3 val) {
         int start = (width * y + x) * 3;
         for (int i = 0; i < 3; i++) {
-            pixels[start + i] = val[i];
-        }
-    }
-    void get(int x, int y, vec3 *val) {
-        int start = (width * y + x) * 3;
-        for (int i = 0; i < 3; i++) {
-            (*val)[i] = pixels[start + i];
+            pixels[start + i] = (uint8_t)(val[i].i >> SHIFT_AMOUNT);
         }
     }
+
     decimal getDepth(int x, int y) { return depth[width * y + x]; }
     void setDepth(int x, int y, decimal val) { depth[width * y + x] = val; }
 
@@ -35,7 +33,7 @@ class Rendertarget {
         }
     }
 
-    decimal *pixels;
+    uint8_t *pixels;
     decimal *depth;
 };