1 files changed, 21 insertions, 17 deletions
diff --git a/apps/raytracing/color.mu b/apps/raytracing/color.mu
index 3b1ff419..86b3d0b6 100644
--- a/apps/raytracing/color.mu
+++ b/apps/raytracing/color.mu
@@ -8,24 +8,28 @@ type rgb {
 # print translating to [0, 256)
 fn print-rgb screen: (addr screen), _c: (addr rgb) {
   var c/esi: (addr rgb) <- copy _c
-  var n/ecx: int <- copy 0xff
-  var xn/xmm1: float <- convert n
-  var tmp/xmm0: float <- copy xn
-  var tmp-a/eax: (addr float) <- get c, r
-  tmp <- multiply *tmp-a
-  var tmp2/edx: int <- convert tmp
-  print-int32-decimal screen, tmp2
+  var xn: float
+  var xn-addr/ecx: (addr float) <- address xn
+  fill-in-rational xn-addr, 0x3e7ff, 0x3e8  # 255999 / 1000
+  # print 255.999 * c->r
+  var result/xmm0: float <- copy xn
+  var src-addr/eax: (addr float) <- get c, r
+  result <- multiply *src-addr
+  var result-int/edx: int <- truncate result
+  print-int32-decimal screen, result-int
   print-string screen, " "
-  tmp-a <- get c, g
-  tmp <- copy xn
-  tmp <- multiply *tmp-a
-  tmp2 <- convert tmp
-  print-int32-decimal screen, tmp2
+  # print 255.999 * c->g
+  src-addr <- get c, g
+  result <- copy xn
+  result <- multiply *src-addr
+  result-int <- truncate result
+  print-int32-decimal screen, result-int
   print-string screen, " "
-  tmp-a <- get c, b
-  tmp <- copy xn
-  tmp <- multiply *tmp-a
-  tmp2 <- convert tmp
-  print-int32-decimal screen, tmp2
+  # print 255.999 * c->b
+  src-addr <- get c, b
+  result <- copy xn
+  result <- multiply *src-addr
+  result-int <- truncate result
+  print-int32-decimal screen, result-int
   print-string screen, "\n"
 }