6949 - snapshot of next raytracing milestone

Not yet right, but worth a snapshot just because it gives a cool result.
Here, try it out:
  $ ./translate_mu_debug apps/raytracing/3.mu
  $ ./a.elf > x.ppm
Now view x.ppm as an image.

In general, this was quite tedious to write. And a still-open question
is how to emit the progress bar to stderr. My options are to either duplicate
all my print-* functions (already proliferating) or add global variables
to Mu.

1 files changed, 16 insertions, 0 deletions

diff --git a/409float.mu b/409float.mu
new file mode 100644
index 00000000..ad94a8d3
--- /dev/null
+++ b/409float.mu
@@ -0,0 +1,16 @@
+# Some quick-n-dirty ways to create floats.
+
+fn fill-in-rational _out: (addr float), nr: int, dr: int {
+  var out/edi: (addr float) <- copy _out
+  var result/xmm0: float <- convert nr
+  var divisor/xmm1: float <- convert dr
+  result <- divide divisor
+  copy-to *out, result
+}
+
+fn fill-in-sqrt _out: (addr float), n: int {
+  var out/edi: (addr float) <- copy _out
+  var result/xmm0: float <- convert n
+  result <- square-root result
+  copy-to *out, result
+}