diff --git a/src/kernel_main.c b/src/kernel_main.c
index fd5cae8..4637631 100644
--- a/src/kernel_main.c
+++ b/src/kernel_main.c
@@ -4,10 +4,23 @@ void kernel_main(uint32_t mbinfo)
 {
     volatile uint32_t * mbi = (volatile uint32_t *)mbinfo;
     volatile uint32_t * fb = (volatile uint32_t *)mbi[88 / 4];
-    uint32_t c = 0u;
-    for (uint32_t i = 0u; i < 800u * 600u; i++)
+    uint32_t pitch = mbi[96 / 4];
+    uint32_t width = mbi[100 / 4];
+    uint32_t height = mbi[104 / 4];
+    for (uint32_t row = 0u; row < height; row++)
     {
-        c++;
-        fb[i] = (c << 28u) | 0x00669900u | ((c << 4u) & 0xFFu);
+        for (uint32_t col = 0u; col < width; col++)
+        {
+            uint32_t er = (col * height) / width;
+            int32_t dr = (int32_t)row - (int32_t)er;
+            if (dr < 0)
+            {
+                dr = -dr;
+            }
+            uint8_t r = 255u - ((uint32_t)dr * 256u / height);
+            uint8_t g = col * 256u / width;
+            uint8_t b = row * 256u / height;
+            fb[pitch * row / 4u + col] = (r << 16u) | (g << 8u) | b;
+        }
     }
 }