glsl2: Rework builtin function generation.

Each language version/extension and target now has a "profile" containing
all of the available builtin function prototypes.  These are written in
GLSL, and come directly out of the GLSL spec (except for expanding genType).

A new builtins/ir/ folder contains the hand-written IR for each builtin,
regardless of what version includes it.  Only those definitions that have
prototypes in the profile will be included.

The autogenerated IR for texture builtins is no longer written to disk,
so there's no longer any confusion as to what's hand-written or
generated.

All scripts are now in python instead of perl.

1 files changed, 33 insertions, 0 deletions

diff --git a/src/glsl/builtins/ir/distance b/src/glsl/builtins/ir/distance
new file mode 100644
index 00000000000..a2309c484f9
--- /dev/null
+++ b/src/glsl/builtins/ir/distance
@@ -0,0 +1,33 @@
+((function distance
+   (signature float
+     (parameters
+       (declare (in) float p0)
+       (declare (in) float p1))
+     ((declare () float p)
+      (assign (constant bool (1)) (var_ref p) (expression float - (var_ref p0) (var_ref p1)))
+      (return (expression float sqrt (expression float dot (var_ref p) (var_ref p))))))
+
+   (signature float
+     (parameters
+       (declare (in) vec2 p0)
+       (declare (in) vec2 p1))
+     ((declare () vec2 p)
+      (assign (constant bool (1)) (var_ref p) (expression vec2 - (var_ref p0) (var_ref p1)))
+      (return (expression float sqrt (expression float dot (var_ref p) (var_ref p))))))
+
+   (signature float
+     (parameters
+       (declare (in) vec3 p0)
+       (declare (in) vec3 p1))
+     ((declare () vec3 p)
+      (assign (constant bool (1)) (var_ref p) (expression vec3 - (var_ref p0) (var_ref p1)))
+      (return (expression float sqrt (expression float dot (var_ref p) (var_ref p))))))
+
+   (signature float
+     (parameters
+       (declare (in) vec4 p0)
+       (declare (in) vec4 p1))
+     ((declare () vec4 p)
+      (assign (constant bool (1)) (var_ref p) (expression vec4 - (var_ref p0) (var_ref p1)))
+      (return (expression float sqrt (expression float dot (var_ref p) (var_ref p))))))
+))