Signed-off-by: Karol Herbst <karolher...@gmail.com> --- src/gallium/docs/source/tgsi.rst | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/src/gallium/docs/source/tgsi.rst b/src/gallium/docs/source/tgsi.rst index c65d721dec..76c82b3e88 100644 --- a/src/gallium/docs/source/tgsi.rst +++ b/src/gallium/docs/source/tgsi.rst @@ -26,7 +26,13 @@ each of the components of *dst*. When this happens, the result is said to be Modifiers ^^^^^^^^^^^^^^^ -TGSI supports modifiers on inputs (as well as saturate modifier on instructions). +TGSI supports modifiers on inputs (as well as saturate and precise modifier +on instructions). + +For arithmetic instruction having a precise modifier certain optimizations +which may alter the result are disallowed. Example: *add(mul(a,b),c)* can't be +optimized to TGSI_OPCODE_MAD, because some hardware only supports the fused +MAD instruction. For inputs which have a floating point type, both absolute value and negation modifiers are supported (with absolute value being applied -- 2.13.1 _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/mesa-dev
