compiler/nir: extend lower_fragcoord_wtrans to support VARYING_SLOT_POS
Signed-off-by: Gert Wollny <gert.wollny@collabora.com> Reviewed-by: Andreas Baierl <ichgeh@imkreisrum.de> Reviewed-by: Eric Anholt <eric@anholt.net> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6220>
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@ -30,8 +30,6 @@
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* gl_FragCoord.xyz = gl_FragCoord_orig.xyz
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* gl_FragCoord.xyz = gl_FragCoord_orig.xyz
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* gl_FragCoord.w = 1.0 / gl_FragCoord_orig.w
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* gl_FragCoord.w = 1.0 / gl_FragCoord_orig.w
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*
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*
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* To trigger the transformation, gl_FragCoord currently has to be treated
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* as a system value with PIPE_CAP_TGSI_FS_POSITION_IS_SYSVAL enabled.
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*/
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*/
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static bool
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static bool
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@ -41,7 +39,14 @@ lower_fragcoord_wtrans_filter(const nir_instr *instr, UNUSED const void *_option
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return false;
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return false;
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nir_intrinsic_instr *intr = nir_instr_as_intrinsic(instr);
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nir_intrinsic_instr *intr = nir_instr_as_intrinsic(instr);
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return intr->intrinsic == nir_intrinsic_load_frag_coord;
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if (intr->intrinsic == nir_intrinsic_load_frag_coord)
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return true;
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if (intr->intrinsic != nir_intrinsic_load_deref)
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return false;
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nir_variable *var = nir_intrinsic_get_var(intr, 0);
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return var->data.location == VARYING_SLOT_POS;
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}
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}
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static nir_ssa_def *
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static nir_ssa_def *
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