Mesa (master): gallium/docs: fix docs wrt ARL/ARR/FLR
Roland Scheidegger
sroland at kemper.freedesktop.org
Thu Jan 29 21:08:36 UTC 2015
Module: Mesa
Branch: master
Commit: f01e8d3ba5a33559f142f5eac390a7bcd9421067
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=f01e8d3ba5a33559f142f5eac390a7bcd9421067
Author: Roland Scheidegger <sroland at vmware.com>
Date: Thu Jan 29 20:39:50 2015 +0100
gallium/docs: fix docs wrt ARL/ARR/FLR
since the address reg holds integer values, ARL/ARR do an implicit float-to-int
conversion, so clarify that. Thus it is also incorrect to say that FLR really
does the same as ARL.
Reviewed-by: Alex Deucher <alexander.deucher at amd.com>
Reviewed-by: Jose Fonseca <jfonseca at vmware.com>
---
src/gallium/docs/source/tgsi.rst | 18 ++++++++----------
1 file changed, 8 insertions(+), 10 deletions(-)
diff --git a/src/gallium/docs/source/tgsi.rst b/src/gallium/docs/source/tgsi.rst
index ff322e8..84b0ed6 100644
--- a/src/gallium/docs/source/tgsi.rst
+++ b/src/gallium/docs/source/tgsi.rst
@@ -48,13 +48,13 @@ used.
.. math::
- dst.x = \lfloor src.x\rfloor
+ dst.x = (int) \lfloor src.x\rfloor
- dst.y = \lfloor src.y\rfloor
+ dst.y = (int) \lfloor src.y\rfloor
- dst.z = \lfloor src.z\rfloor
+ dst.z = (int) \lfloor src.z\rfloor
- dst.w = \lfloor src.w\rfloor
+ dst.w = (int) \lfloor src.w\rfloor
.. opcode:: MOV - Move
@@ -313,8 +313,6 @@ This instruction replicates its result.
.. opcode:: FLR - Floor
-This is identical to :opcode:`ARL`.
-
.. math::
dst.x = \lfloor src.x\rfloor
@@ -637,13 +635,13 @@ This instruction replicates its result.
.. math::
- dst.x = round(src.x)
+ dst.x = (int) round(src.x)
- dst.y = round(src.y)
+ dst.y = (int) round(src.y)
- dst.z = round(src.z)
+ dst.z = (int) round(src.z)
- dst.w = round(src.w)
+ dst.w = (int) round(src.w)
.. opcode:: SSG - Set Sign
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