glsl: Add IR lisp for GLSL ES 3.00 pack/unpack functions

For each of the following functions, add a declaration to
builtins/profiles/300es.glsl and create new file
builtins/ir/${funcname}.ir:

  packSnorm2x16  unpackSnorm2x16
  packUnorm2x16  unpackUnorm2x16
  packHalf2x16   unpackHalf2x16

Reviewed-by: Ian Romanick <[email protected]>
Reviewed-by: Matt Tuner <[email protected]>
Signed-off-by: Chad Versace <[email protected]>

7 files changed, 43 insertions, 7 deletions

diff --git a/src/glsl/builtins/ir/packHalf2x16.ir b/src/glsl/builtins/ir/packHalf2x16.ir
new file mode 100644
index 00000000000..2f854071574
--- /dev/null
+++ b/src/glsl/builtins/ir/packHalf2x16.ir
@@ -0,0 +1,6 @@
+((function packHalf2x16
+   (signature uint
+     (parameters
+       (declare (in) vec2 arg0))
+     ((return (expression uint packHalf2x16 (var_ref arg0)))))
+))
diff --git a/src/glsl/builtins/ir/packSnorm2x16.ir b/src/glsl/builtins/ir/packSnorm2x16.ir
new file mode 100644
index 00000000000..b4575d2da3f
--- /dev/null
+++ b/src/glsl/builtins/ir/packSnorm2x16.ir
@@ -0,0 +1,6 @@
+((function packSnorm2x16
+   (signature uint
+     (parameters
+       (declare (in) vec2 arg0))
+     ((return (expression uint packSnorm2x16 (var_ref arg0)))))
+))
diff --git a/src/glsl/builtins/ir/packUnorm2x16.ir b/src/glsl/builtins/ir/packUnorm2x16.ir
new file mode 100644
index 00000000000..c809f2d7046
--- /dev/null
+++ b/src/glsl/builtins/ir/packUnorm2x16.ir
@@ -0,0 +1,6 @@
+((function packUnorm2x16
+   (signature uint
+     (parameters
+       (declare (in) vec2 arg0))
+     ((return (expression uint packUnorm2x16 (var_ref arg0)))))
+))
diff --git a/src/glsl/builtins/ir/unpackHalf2x16.ir b/src/glsl/builtins/ir/unpackHalf2x16.ir
new file mode 100644
index 00000000000..f5b6fc23783
--- /dev/null
+++ b/src/glsl/builtins/ir/unpackHalf2x16.ir
@@ -0,0 +1,6 @@
+((function unpackHalf2x16
+   (signature vec2
+     (parameters
+       (declare (in) uint arg0))
+     ((return (expression vec2 unpackHalf2x16 (var_ref arg0)))))
+))
diff --git a/src/glsl/builtins/ir/unpackSnorm2x16.ir b/src/glsl/builtins/ir/unpackSnorm2x16.ir
new file mode 100644
index 00000000000..9092a063877
--- /dev/null
+++ b/src/glsl/builtins/ir/unpackSnorm2x16.ir
@@ -0,0 +1,6 @@
+((function unpackSnorm2x16
+   (signature vec2
+     (parameters
+       (declare (in) uint arg0))
+     ((return (expression vec2 unpackSnorm2x16 (var_ref arg0)))))
+))
diff --git a/src/glsl/builtins/ir/unpackUnorm2x16.ir b/src/glsl/builtins/ir/unpackUnorm2x16.ir
new file mode 100644
index 00000000000..935dc85821d
--- /dev/null
+++ b/src/glsl/builtins/ir/unpackUnorm2x16.ir
@@ -0,0 +1,6 @@
+((function unpackUnorm2x16
+   (signature vec2
+     (parameters
+       (declare (in) uint arg0))
+     ((return (expression vec2 unpackUnorm2x16 (var_ref arg0)))))
+))
diff --git a/src/glsl/builtins/profiles/300es.glsl b/src/glsl/builtins/profiles/300es.glsl
index 45212b30dc7..4b7160dd2c2 100644
--- a/src/glsl/builtins/profiles/300es.glsl
+++ b/src/glsl/builtins/profiles/300es.glsl
@@ -325,14 +325,14 @@ vec4  uintBitsToFloat(uvec4 value);
 
 /*
  * 8.4 - Floating-Point Pack and Unpack Functions
- * FIXME: implement these
  */
-// uint packSnorm2x16(vec2 v);
-// vec2 unpackSnorm2x16(uint p);
-// uint packUnorm2x16(vec2 v);
-// vec2 unpackUnorm2x16(uint p);
-// uint packHalf2x16(vec2 v);
-// vec2 unpackHalf2x16(uint p);
+highp   uint packSnorm2x16(        vec2 v);
+highp   uint packUnorm2x16(        vec2 v);
+highp   uint packHalf2x16 (mediump vec2 v);
+
+highp   vec2 unpackSnorm2x16(highp uint p);
+highp   vec2 unpackUnorm2x16(highp uint p);
+mediump vec2 unpackHalf2x16 (highp uint p);
 
 /*
  * 8.5 - Geometric Functions