From: Roland Scheidegger <srol...@vmware.com> UCMP while an integer opcode isn't really consistently implemented as having all integer arguments. softpipe will assume all arguments are ints, whereas gallivm has the arguments defined as untyped which means they'll get treated as floats. This means input modifiers will not work the same. Fix this by saying only first arg is an integer, which seems more useful than making all arguments integers - this would be similar to d3d10 movc opcode. --- src/gallium/docs/source/tgsi.rst | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/src/gallium/docs/source/tgsi.rst b/src/gallium/docs/source/tgsi.rst index 3af1fb7..852f8a0 100644 --- a/src/gallium/docs/source/tgsi.rst +++ b/src/gallium/docs/source/tgsi.rst @@ -1291,6 +1291,11 @@ Support for these opcodes indicated by PIPE_SHADER_CAP_INTEGERS (all of them?) .. opcode:: UCMP - Integer Conditional Move +.. note:: + + Only the first source arg is an integer, the 2nd and 3rd ones are + considered floats (for input modifier purposes). + .. math:: dst.x = src0.x ? src1.x : src2.x -- 1.7.9.5 _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/mesa-dev
