From: Zebediah Figura zfigura@codeweavers.com
--- tests/hlsl-majority-pragma.shader_test | 131 +++++++++++++++++++++++++ 1 file changed, 131 insertions(+)
diff --git a/tests/hlsl-majority-pragma.shader_test b/tests/hlsl-majority-pragma.shader_test index d269e859..da1b1ff3 100644 --- a/tests/hlsl-majority-pragma.shader_test +++ b/tests/hlsl-majority-pragma.shader_test @@ -20,6 +20,51 @@ uniform 12 float4 0.2 0.4 0.0 0.0 draw quad probe all rgba (0.17, 0.39, 0.17, 0.39) 1
+ +%% Test with a struct. + +[pixel shader] +#pragma pack_matrix(row_major) +struct apple +{ + float2x2 m; +}; +#pragma pack_matrix(column_major) +uniform struct apple a; + +float4 main() : sv_target +{ + return float4(a.m[0], a.m[1]); +} + +[test] +uniform 0 float4 0.1 0.2 0.0 0.0 +uniform 4 float4 0.3 0.4 0.0 0.0 +draw quad +probe all rgba (0.1, 0.2, 0.3, 0.4) + + +%% Test with an array. + +[pixel shader] +#pragma pack_matrix(row_major) +uniform float2x2 m[2]; +#pragma pack_matrix(column_major) + +float4 main() : sv_target +{ + return float4(m[1][0], m[1][1]); +} + +[test] +uniform 0 float4 0.0 0.0 0.0 0.0 +uniform 4 float4 0.0 0.0 0.0 0.0 +uniform 8 float4 0.5 0.6 0.0 0.0 +uniform 12 float4 0.7 0.8 0.0 0.0 +draw quad +probe all rgba (0.5, 0.6, 0.7, 0.8) + + % The documentation claims these strings are subject to macro expansion. % They are not.
@@ -47,3 +92,89 @@ uniform 0 float4 0.1 0.2 0.0 0.0 uniform 4 float4 0.3 0.4 0.0 0.0 draw quad probe all rgba (0.23, 0.34, 0.5, 0.5) 1 + + +% The majority that applies to a typedef is the latent majority at the time +% that typedef was declared. + +[pixel shader] +#pragma pack_matrix(row_major) +typedef float2x2 mat_t; +#pragma pack_matrix(column_major) +uniform mat_t m; + +float4 main() : sv_target +{ + return float4(m[0], m[1]); +} + +[test] +uniform 0 float4 0.1 0.2 0.0 0.0 +uniform 4 float4 0.3 0.4 0.0 0.0 +draw quad +todo probe all rgba (0.1, 0.2, 0.3, 0.4) + + +% In fact, it's illegal to specify a contradictory majority. + +[pixel shader fail todo] +#pragma pack_matrix(row_major) +typedef float2x2 mat_t; +uniform column_major mat_t m; + +float4 main() : sv_target +{ + return 0; +} + + +% However, if no pack_matrix directive has been used yet, a typedef has no +% defined majority, and the majority can be overwritten, including by a +% subsequent pragma. + +[pixel shader] +typedef float2x2 mat_t; +#pragma pack_matrix(row_major) +uniform mat_t m; + +uniform row_major mat_t r; +uniform column_major mat_t c; + +float4 main() : sv_target +{ + return float4(m[0], m[1]); +} + +[test] +uniform 0 float4 0.1 0.2 0.0 0.0 +uniform 4 float4 0.3 0.4 0.0 0.0 +draw quad +probe all rgba (0.1, 0.2, 0.3, 0.4) + + +% This does not apply recursively to struct or array members, however. Members +% defined while there is no latent majority are always column-major, even if +% the type is later used after a pack_matrix(row_major) directive. + +% Note that the majority of the struct or array type cannot itself be +% overwritten with modifiers; those are only valid on matrix types. + +[pixel shader] +struct apple +{ + float2x2 m; +}; +#pragma pack_matrix(row_major) +typedef struct apple apple_t; +uniform apple_t a; + +float4 main() : sv_target +{ + return float4(a.m[0], a.m[1]); +} + +[test] +uniform 0 float4 0.2 0.4 0.0 0.0 +uniform 4 float4 0.3 0.5 0.0 0.0 +draw quad +probe all rgba (0.2, 0.3, 0.4, 0.5)