From: Kenneth Graunke <kenneth@whitecape.org>
Date: Tue, 4 May 2010 04:29:01 +0000 (-0700)
Subject: Implement "cross" builtin.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=6a9b1e1f06c2859f0c20375189c6ff02ed769d1a;p=mesa.git

Implement "cross" builtin.
---

diff --git a/builtins/110/cross b/builtins/110/cross
new file mode 100644
index 00000000000..deb2f952bfc
--- /dev/null
+++ b/builtins/110/cross
@@ -0,0 +1,17 @@
+((function cross
+   (signature vec3
+     (parameters
+       (declare (in) vec3 arg0)
+       (declare (in) vec3 arg1))
+     ((declare () vec3 t)
+      (assign (constant bool (1)) (swiz x (var_ref t))
+              (expression float - (expression float * (swiz y (var_ref arg0)) (swiz z (var_ref arg1)))
+	                          (expression float * (swiz y (var_ref arg1)) (swiz z (var_ref arg0)))))
+      (assign (constant bool (1)) (swiz y (var_ref t))
+              (expression float - (expression float * (swiz z (var_ref arg0)) (swiz x (var_ref arg1)))
+	                          (expression float * (swiz z (var_ref arg1)) (swiz x (var_ref arg0)))))
+      (assign (constant bool (1)) (swiz z (var_ref t))
+              (expression float - (expression float * (swiz x (var_ref arg0)) (swiz y (var_ref arg1)))
+	                          (expression float * (swiz x (var_ref arg1)) (swiz y (var_ref arg0)))))
+      (return (var_ref t))))
+))