From: Kenneth Graunke <kenneth@whitecape.org>
Date: Tue, 4 May 2010 02:10:04 +0000 (-0700)
Subject: Implement "smoothstep" builtin.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=c2de1875234565c53b8f3683b04bc7f901055882;p=mesa.git

Implement "smoothstep" builtin.
---

diff --git a/builtins/110/smoothstep b/builtins/110/smoothstep
new file mode 100644
index 00000000000..b4255ba78f1
--- /dev/null
+++ b/builtins/110/smoothstep
@@ -0,0 +1,224 @@
+((function smoothstep
+   (signature float
+     (parameters
+       (declare (in) float edge0)
+       (declare (in) float edge1)
+       (declare (in) float x))
+     ((declare () float t)
+
+      (assign (constant bool (1)) (var_ref t)
+              (expression float max
+	                  (expression float min
+	                              (expression float / (expression float - (var_ref x) (var_ref edge0)) (expression float - (var_ref edge1) (var_ref edge0)))
+	                              (constant float (1.0)))
+	                  (constant float (0.0))))
+      (return (expression float * (var_ref t) (expression float * (var_ref t) (expression float - (constant float (3.000000)) (expression float * (constant float (2.000000)) (var_ref t))))))))
+
+   (signature vec2
+     (parameters
+       (declare (in) float edge0)
+       (declare (in) float edge1)
+       (declare (in) vec2 x))
+     ((declare () vec2 t)
+      (declare () vec2 retval)
+
+      (assign (constant bool (1)) (swiz x (var_ref t))
+              (expression float max
+	                  (expression float min
+	                              (expression float / (expression float - (swiz x (var_ref x)) (var_ref edge0)) (expression float - (var_ref edge1) (var_ref edge0)))
+	                              (constant float (1.0)))
+	                  (constant float (0.0))))
+      (assign (constant bool (1)) (swiz x (var_ref retval)) (expression float * (swiz x (var_ref t)) (expression float * (swiz x (var_ref t)) (expression float - (constant float (3.000000)) (expression float * (constant float (2.000000)) (swiz x (var_ref t)))))))
+
+      (assign (constant bool (1)) (swiz y (var_ref t))
+              (expression float max
+	                  (expression float min
+	                              (expression float / (expression float - (swiz y (var_ref x)) (var_ref edge0)) (expression float - (var_ref edge1) (var_ref edge0)))
+	                              (constant float (1.0)))
+	                  (constant float (0.0))))
+      (assign (constant bool (1)) (swiz y (var_ref retval)) (expression float * (swiz y (var_ref t)) (expression float * (swiz y (var_ref t)) (expression float - (constant float (3.000000)) (expression float * (constant float (2.000000)) (swiz y (var_ref t)))))))
+      (return (var_ref retval))
+      ))
+
+   (signature vec3
+     (parameters
+       (declare (in) float edge0)
+       (declare (in) float edge1)
+       (declare (in) vec3 x))
+     ((declare () vec3 t)
+      (declare () vec3 retval)
+
+      (assign (constant bool (1)) (swiz x (var_ref t))
+              (expression float max
+	                  (expression float min
+	                              (expression float / (expression float - (swiz x (var_ref x)) (var_ref edge0)) (expression float - (var_ref edge1) (var_ref edge0)))
+	                              (constant float (1.0)))
+	                  (constant float (0.0))))
+      (assign (constant bool (1)) (swiz x (var_ref retval)) (expression float * (swiz x (var_ref t)) (expression float * (swiz x (var_ref t)) (expression float - (constant float (3.000000)) (expression float * (constant float (2.000000)) (swiz x (var_ref t)))))))
+
+      (assign (constant bool (1)) (swiz y (var_ref t))
+              (expression float max
+	                  (expression float min
+	                              (expression float / (expression float - (swiz y (var_ref x)) (var_ref edge0)) (expression float - (var_ref edge1) (var_ref edge0)))
+	                              (constant float (1.0)))
+	                  (constant float (0.0))))
+      (assign (constant bool (1)) (swiz y (var_ref retval)) (expression float * (swiz y (var_ref t)) (expression float * (swiz y (var_ref t)) (expression float - (constant float (3.000000)) (expression float * (constant float (2.000000)) (swiz y (var_ref t)))))))
+
+      (assign (constant bool (1)) (swiz z (var_ref t))
+              (expression float max
+	                  (expression float min
+	                              (expression float / (expression float - (swiz z (var_ref x)) (var_ref edge0)) (expression float - (var_ref edge1) (var_ref edge0)))
+	                              (constant float (1.0)))
+	                  (constant float (0.0))))
+      (assign (constant bool (1)) (swiz z (var_ref retval)) (expression float * (swiz z (var_ref t)) (expression float * (swiz z (var_ref t)) (expression float - (constant float (3.000000)) (expression float * (constant float (2.000000)) (swiz z (var_ref t)))))))
+      (return (var_ref retval))
+      ))
+
+
+   (signature vec4
+     (parameters
+       (declare (in) float edge0)
+       (declare (in) float edge1)
+       (declare (in) vec4 x))
+     ((declare () vec4 t)
+      (declare () vec4 retval)
+
+      (assign (constant bool (1)) (swiz x (var_ref t))
+              (expression float max
+	                  (expression float min
+	                              (expression float / (expression float - (swiz x (var_ref x)) (var_ref edge0)) (expression float - (var_ref edge1) (var_ref edge0)))
+	                              (constant float (1.0)))
+	                  (constant float (0.0))))
+      (assign (constant bool (1)) (swiz x (var_ref retval)) (expression float * (swiz x (var_ref t)) (expression float * (swiz x (var_ref t)) (expression float - (constant float (3.000000)) (expression float * (constant float (2.000000)) (swiz x (var_ref t)))))))
+
+      (assign (constant bool (1)) (swiz y (var_ref t))
+              (expression float max
+	                  (expression float min
+	                              (expression float / (expression float - (swiz y (var_ref x)) (var_ref edge0)) (expression float - (var_ref edge1) (var_ref edge0)))
+	                              (constant float (1.0)))
+	                  (constant float (0.0))))
+      (assign (constant bool (1)) (swiz y (var_ref retval)) (expression float * (swiz y (var_ref t)) (expression float * (swiz y (var_ref t)) (expression float - (constant float (3.000000)) (expression float * (constant float (2.000000)) (swiz y (var_ref t)))))))
+
+      (assign (constant bool (1)) (swiz z (var_ref t))
+              (expression float max
+	                  (expression float min
+	                              (expression float / (expression float - (swiz z (var_ref x)) (var_ref edge0)) (expression float - (var_ref edge1) (var_ref edge0)))
+	                              (constant float (1.0)))
+	                  (constant float (0.0))))
+      (assign (constant bool (1)) (swiz z (var_ref retval)) (expression float * (swiz z (var_ref t)) (expression float * (swiz z (var_ref t)) (expression float - (constant float (3.000000)) (expression float * (constant float (2.000000)) (swiz z (var_ref t)))))))
+
+      (assign (constant bool (1)) (swiz w (var_ref t))
+              (expression float max
+	                  (expression float min
+	                              (expression float / (expression float - (swiz w (var_ref x)) (var_ref edge0)) (expression float - (var_ref edge1) (var_ref edge0)))
+	                              (constant float (1.0)))
+	                  (constant float (0.0))))
+      (assign (constant bool (1)) (swiz w (var_ref retval)) (expression float * (swiz w (var_ref t)) (expression float * (swiz w (var_ref t)) (expression float - (constant float (3.000000)) (expression float * (constant float (2.000000)) (swiz w (var_ref t)))))))
+      (return (var_ref retval))
+      ))
+
+   (signature vec2
+     (parameters
+       (declare (in) vec2 edge0)
+       (declare (in) vec2 edge1)
+       (declare (in) vec2 x))
+     ((declare () vec2 t)
+      (declare () vec2 retval)
+
+      (assign (constant bool (1)) (swiz x (var_ref t))
+              (expression float max
+	                  (expression float min
+	                              (expression float / (expression float - (swiz x (var_ref x)) (swiz x (var_ref edge0))) (expression float - (swiz x (var_ref edge1)) (swiz x (var_ref edge0))))
+	                              (constant float (1.0)))
+	                  (constant float (0.0))))
+      (assign (constant bool (1)) (swiz x (var_ref retval)) (expression float * (swiz x (var_ref t)) (expression float * (swiz x (var_ref t)) (expression float - (constant float (3.000000)) (expression float * (constant float (2.000000)) (swiz x (var_ref t)))))))
+
+      (assign (constant bool (1)) (swiz y (var_ref t))
+              (expression float max
+	                  (expression float min
+	                              (expression float / (expression float - (swiz y (var_ref x)) (swiz y (var_ref edge0))) (expression float - (swiz y (var_ref edge1)) (swiz y (var_ref edge0))))
+	                              (constant float (1.0)))
+	                  (constant float (0.0))))
+      (assign (constant bool (1)) (swiz y (var_ref retval)) (expression float * (swiz y (var_ref t)) (expression float * (swiz y (var_ref t)) (expression float - (constant float (3.000000)) (expression float * (constant float (2.000000)) (swiz y (var_ref t)))))))
+      (return (var_ref retval))
+      ))
+
+   (signature vec3
+     (parameters
+       (declare (in) vec3 edge0)
+       (declare (in) vec3 edge1)
+       (declare (in) vec3 x))
+     ((declare () vec3 t)
+      (declare () vec3 retval)
+
+      (assign (constant bool (1)) (swiz x (var_ref t))
+              (expression float max
+	                  (expression float min
+	                              (expression float / (expression float - (swiz x (var_ref x)) (swiz x (var_ref edge0))) (expression float - (swiz x (var_ref edge1)) (swiz x (var_ref edge0))))
+	                              (constant float (1.0)))
+	                  (constant float (0.0))))
+      (assign (constant bool (1)) (swiz x (var_ref retval)) (expression float * (swiz x (var_ref t)) (expression float * (swiz x (var_ref t)) (expression float - (constant float (3.000000)) (expression float * (constant float (2.000000)) (swiz x (var_ref t)))))))
+
+      (assign (constant bool (1)) (swiz y (var_ref t))
+              (expression float max
+	                  (expression float min
+	                              (expression float / (expression float - (swiz y (var_ref x)) (swiz y (var_ref edge0))) (expression float - (swiz y (var_ref edge1)) (swiz y (var_ref edge0))))
+	                              (constant float (1.0)))
+	                  (constant float (0.0))))
+      (assign (constant bool (1)) (swiz y (var_ref retval)) (expression float * (swiz y (var_ref t)) (expression float * (swiz y (var_ref t)) (expression float - (constant float (3.000000)) (expression float * (constant float (2.000000)) (swiz y (var_ref t)))))))
+
+      (assign (constant bool (1)) (swiz z (var_ref t))
+              (expression float max
+	                  (expression float min
+	                              (expression float / (expression float - (swiz z (var_ref x)) (swiz z (var_ref edge0))) (expression float - (swiz z (var_ref edge1)) (swiz z (var_ref edge0))))
+	                              (constant float (1.0)))
+	                  (constant float (0.0))))
+      (assign (constant bool (1)) (swiz z (var_ref retval)) (expression float * (swiz z (var_ref t)) (expression float * (swiz z (var_ref t)) (expression float - (constant float (3.000000)) (expression float * (constant float (2.000000)) (swiz z (var_ref t)))))))
+      (return (var_ref retval))
+      ))
+
+
+   (signature vec4
+     (parameters
+       (declare (in) vec4 edge0)
+       (declare (in) vec4 edge1)
+       (declare (in) vec4 x))
+     ((declare () vec4 t)
+      (declare () vec4 retval)
+
+      (assign (constant bool (1)) (swiz x (var_ref t))
+              (expression float max
+	                  (expression float min
+	                              (expression float / (expression float - (swiz x (var_ref x)) (swiz x (var_ref edge0))) (expression float - (swiz x (var_ref edge1)) (swiz x (var_ref edge0))))
+	                              (constant float (1.0)))
+	                  (constant float (0.0))))
+      (assign (constant bool (1)) (swiz x (var_ref retval)) (expression float * (swiz x (var_ref t)) (expression float * (swiz x (var_ref t)) (expression float - (constant float (3.000000)) (expression float * (constant float (2.000000)) (swiz x (var_ref t)))))))
+
+      (assign (constant bool (1)) (swiz y (var_ref t))
+              (expression float max
+	                  (expression float min
+	                              (expression float / (expression float - (swiz y (var_ref x)) (swiz y (var_ref edge0))) (expression float - (swiz y (var_ref edge1)) (swiz y (var_ref edge0))))
+	                              (constant float (1.0)))
+	                  (constant float (0.0))))
+      (assign (constant bool (1)) (swiz y (var_ref retval)) (expression float * (swiz y (var_ref t)) (expression float * (swiz y (var_ref t)) (expression float - (constant float (3.000000)) (expression float * (constant float (2.000000)) (swiz y (var_ref t)))))))
+
+      (assign (constant bool (1)) (swiz z (var_ref t))
+              (expression float max
+	                  (expression float min
+	                              (expression float / (expression float - (swiz z (var_ref x)) (swiz z (var_ref edge0))) (expression float - (swiz z (var_ref edge1)) (swiz z (var_ref edge0))))
+	                              (constant float (1.0)))
+	                  (constant float (0.0))))
+      (assign (constant bool (1)) (swiz z (var_ref retval)) (expression float * (swiz z (var_ref t)) (expression float * (swiz z (var_ref t)) (expression float - (constant float (3.000000)) (expression float * (constant float (2.000000)) (swiz z (var_ref t)))))))
+
+      (assign (constant bool (1)) (swiz w (var_ref t))
+              (expression float max
+	                  (expression float min
+	                              (expression float / (expression float - (swiz w (var_ref x)) (swiz w (var_ref edge0))) (expression float - (swiz w (var_ref edge1)) (swiz w (var_ref edge0))))
+	                              (constant float (1.0)))
+	                  (constant float (0.0))))
+      (assign (constant bool (1)) (swiz w (var_ref retval)) (expression float * (swiz w (var_ref t)) (expression float * (swiz w (var_ref t)) (expression float - (constant float (3.000000)) (expression float * (constant float (2.000000)) (swiz w (var_ref t)))))))
+      (return (var_ref retval))
+      ))
+
+))
+