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-rw-r--r--src/gallium/docs/source/tgsi.rst8
1 files changed, 5 insertions, 3 deletions
diff --git a/src/gallium/docs/source/tgsi.rst b/src/gallium/docs/source/tgsi.rst
index 18b42fba747..9976875c7bd 100644
--- a/src/gallium/docs/source/tgsi.rst
+++ b/src/gallium/docs/source/tgsi.rst
@@ -28,9 +28,11 @@ Modifiers
TGSI supports modifiers on inputs (as well as saturate modifier on instructions).
-For inputs which have a floating point type, both absolute value and negation
-modifiers are supported (with absolute value being applied first).
-TGSI_OPCODE_MOV is considered to have float input type for applying modifiers.
+For inputs which have a floating point type, both absolute value and
+negation modifiers are supported (with absolute value being applied
+first). The only source of TGSI_OPCODE_MOV and the second and third
+sources of TGSI_OPCODE_UCMP are considered to have float type for
+applying modifiers.
For inputs which have signed or unsigned type only the negate modifier is
supported.