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@amd.com>
Reviewed-by: Jose Fonseca <jfonseca@vmware.com>

diff --git a/src/gallium/docs/source/tgsi.rst b/src/gallium/docs/source/tgsi.rst
index ff322e8..84b0ed6 100644 (file)
--- 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