[gegl] brightness-contrast: removed SIMD codepath
- From: Øyvind Kolås <ok src gnome org>
- To: commits-list gnome org
- Cc:
- Subject: [gegl] brightness-contrast: removed SIMD codepath
- Date: Sat, 15 Jan 2011 12:40:26 +0000 (UTC)
commit 6809a059a45c8365487f003c2dfd4c4fc35e32e8
Author: �yvind Kolås <pippin gimp org>
Date: Sat Jan 15 12:39:37 2011 +0000
brightness-contrast: removed SIMD codepath
This code path is not of large benefit, and some of it might even be convered
by the auto-vectorizing, removing it to keep the well documented sample op
simpler.
operations/common/brightness-contrast.c | 45 -------------------------------
1 files changed, 0 insertions(+), 45 deletions(-)
---
diff --git a/operations/common/brightness-contrast.c b/operations/common/brightness-contrast.c
index c70d147..81cf8e3 100644
--- a/operations/common/brightness-contrast.c
+++ b/operations/common/brightness-contrast.c
@@ -105,41 +105,6 @@ process (GeglOperation *op,
return TRUE;
}
-
-#ifdef HAS_G4FLOAT
-/* The compiler supports vector extensions allowing an version of
- * the process code that produces more optimal instructions on the
- * target platform.
- */
-
-static gboolean
-process_simd (GeglOperation *op,
- void *in_buf,
- void *out_buf,
- glong samples,
- const GeglRectangle *roi)
-{
- GeglChantO *o = GEGL_CHANT_PROPERTIES (op);
- g4float *in = in_buf;
- g4float *out = out_buf;
-
- /* add 0.5 to brightness here to make the logic in the innerloop tighter
- */
- g4float brightness = g4float_all(o->brightness + 0.5);
- g4float contrast = g4float_all(o->contrast);
- g4float half = g4float_half;
-
- while (samples--)
- {
- *out = (*in - half) * contrast + brightness;
- g4floatA(*out)=g4floatA(*in);
- in ++;
- out ++;
- }
- return TRUE;
-}
-#endif
-
/*
* The class init function sets up information needed for this operations class
* (template) in the GObject OO framework.
@@ -170,16 +135,6 @@ gegl_chant_class_init (GeglChantClass *klass)
/* a description of what this operations does */
operation_class->description = _("Changes the light level and contrast.");
-
-
-#ifdef HAS_G4FLOAT
- /* add conditionally compiled variation of process(), gegl should be able
- * to determine which is fastest and hopefully if any implementation is
- * broken and not conforming to the reference implementation.
- */
- gegl_operation_class_add_processor (operation_class,
- G_CALLBACK (process_simd), "simd");
-#endif
}
#endif /* closing #ifdef GEGL_CHANT_PROPERTIES ... else ... */
[
Date Prev][
Date Next] [
Thread Prev][
Thread Next]
[
Thread Index]
[
Date Index]
[
Author Index]