glsl: Add support for the 1.30 round() built-in.

This implements round() via the ir_unop_round_even opcode, rather than
adding a new opcode.  We may wish to add one in the future, since it
might enable a small performance increase on some hardware, but for now,
this should suffice.

diff --git a/src/glsl/builtins/ir/round b/src/glsl/builtins/ir/round
new file mode 100644 (file)
index 0000000..d0d425b
--- /dev/null
+++ b/src/glsl/builtins/ir/round
@@ -0,0 +1,21 @@
+((function round
+   (signature float
+     (parameters
+       (declare (in) float arg0))
+     ((return (expression float round_even (var_ref arg0)))))
+
+   (signature vec2
+     (parameters
+       (declare (in) vec2 arg0))
+     ((return (expression vec2 round_even (var_ref arg0)))))
+
+   (signature vec3
+     (parameters
+       (declare (in) vec3 arg0))
+     ((return (expression vec3 round_even (var_ref arg0)))))
+
+   (signature vec4
+     (parameters
+       (declare (in) vec4 arg0))
+     ((return (expression vec4 round_even (var_ref arg0)))))
+))

diff --git a/src/glsl/builtins/profiles/130.frag b/src/glsl/builtins/profiles/130.frag
index c8b6319ae62f65f9b0ea55a9ac72ddfd344a914c..96440703bd3755e3efd45f5875c6e542d6ba9d10 100644 (file)
--- a/src/glsl/builtins/profiles/130.frag
+++ b/src/glsl/builtins/profiles/130.frag
@@ -148,6 +148,11 @@ vec2  trunc(vec2  x);
 vec3  trunc(vec3  x);
 vec4  trunc(vec4  x);
 
+float round(float x);
+vec2  round(vec2  x);
+vec3  round(vec3  x);
+vec4  round(vec4  x);
+
 float roundEven(float x);
 vec2  roundEven(vec2  x);
 vec3  roundEven(vec3  x);

diff --git a/src/glsl/builtins/profiles/130.vert b/src/glsl/builtins/profiles/130.vert
index 9d1056f282f346d5aae4066d967fef0fa422c84e..eb765186fc87618f88876950b9b1c0e67fbe6122 100644 (file)
--- a/src/glsl/builtins/profiles/130.vert
+++ b/src/glsl/builtins/profiles/130.vert
@@ -148,6 +148,11 @@ vec2  trunc(vec2  x);
 vec3  trunc(vec3  x);
 vec4  trunc(vec4  x);
 
+float round(float x);
+vec2  round(vec2  x);
+vec3  round(vec3  x);
+vec4  round(vec4  x);
+
 float roundEven(float x);
 vec2  roundEven(vec2  x);
 vec3  roundEven(vec3  x);