From: Conor McCarthy cmccarthy@codeweavers.com
Values in DXIL have no signedness, so it is ambiguous whether 16-bit constants should or should not be sign-extended when 16-bit execution is not supported. --- tests/hlsl/minimum-precision.shader_test | 41 ++++++++++++++++++++++++ 1 file changed, 41 insertions(+)
diff --git a/tests/hlsl/minimum-precision.shader_test b/tests/hlsl/minimum-precision.shader_test index e5053e3d1..773b2b393 100644 --- a/tests/hlsl/minimum-precision.shader_test +++ b/tests/hlsl/minimum-precision.shader_test @@ -19,3 +19,44 @@ float4 main() : sv_target [test] draw quad probe all rgba (197.0, 218.0, 238.0, 257.0) + + +[pixel shader] +uniform min16uint2 u; + +uint4 main() : sv_target +{ + min16uint i = 0x7fff, j = 0xffff; + return uint4(u.x + i, u.y + j, 0, 0); +} + +[test] +uniform 0 uint4 0 0 0 0 +draw quad +probe all rgbaui (0x7fff, 0xffff, 0, 0) + + +% The code d3dcompiler_47 produces for this appears correct, but the result +% is still zero in Windows. +[require] +shader model >= 6.0 + +[pixel shader] +uniform min16uint4 u; +uniform uint i; + +uint4 main() : sv_target +{ + min16uint arr[4] = {1, 2, 0x7fff, 0xffff}; + return uint4(u.x + arr[i], u.y + arr[i + 1], 0, 0); +} + +[test] +uniform 0 uint4 0 0 0 0 +uniform 4 uint 2 +draw quad +probe all rgbaui (0x7fff, 0xffff, 0, 0) +uniform 0 uint4 0 0 0 0 +uniform 4 uint 0 +draw quad +probe all rgbaui (1, 2, 0, 0)