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glsl: Fix pi/2 constant in acos built-in function

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In single precision, 1.5707963 becomes 1.5707962513 which is too
small.  However, 1.5707964 becomes 1.5707963705 which is just right.
The value 1.5707964 is already used in asin.ir.

NOTE: This is a candidate for stable release branches.

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Olivier Galibert <galibert@pobox.com>
Reviewed-by: Paul Berry <stereotype441@gmail.com>
This commit is contained in:
Ian Romanick
2012-06-04 10:20:36 -07:00
parent f18d3fe0cb
commit 4bfdc83135
1 changed files with 4 additions and 4 deletions
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src/glsl/builtins/ir/acos.ir
+4 -4
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@@ -4,26 +4,26 @@
(declare (in) float x))
((declare () float s)
(call asin (var_ref s) ((var_ref x)))
(return (expression float - (constant float (1.5707963)) (var_ref s)))))
(return (expression float - (constant float (1.5707964)) (var_ref s)))))
(signature vec2
(parameters
(declare (in) vec2 x))
((declare () vec2 s)
(call asin (var_ref s) ((var_ref x)))
(return (expression vec2 - (constant float (1.5707963)) (var_ref s)))))
(return (expression vec2 - (constant float (1.5707964)) (var_ref s)))))
(signature vec3
(parameters
(declare (in) vec3 x))
((declare () vec3 s)
(call asin (var_ref s) ((var_ref x)))
(return (expression vec3 - (constant float (1.5707963)) (var_ref s)))))
(return (expression vec3 - (constant float (1.5707964)) (var_ref s)))))
(signature vec4
(parameters
(declare (in) vec4 x))
((declare () vec4 s)
(call asin (var_ref s) ((var_ref x)))
(return (expression vec4 - (constant float (1.5707963)) (var_ref s)))))
(return (expression vec4 - (constant float (1.5707964)) (var_ref s)))))
))