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st/mesa: add double input support including lowering (v3.1)

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This takes a different approach to previously, we cannot index into the
inputMapping with anything but the mesa attribute index, so we can't use
the just add one to index trick, we need more info to add one to it
after we've mapped the input.

(Fixed copy propgation and cleaned up a little)

v2: drop float64 format check, just attr->Doubles.
merge enable patch.
v3: cleanup code a bit.
v3.1: minor review fixups (comment, newline) (Ilia)

Reviewed-by: Ilia Mirkin <imirkin@alum.mit.edu>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Dave Airlie
2015-02-20 11:42:19 +10:00
parent c4254ee526
commit ef83c9b762
5 changed files with 164 additions and 45 deletions
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5
src/mesa/state_tracker/st_program.c
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@@ -194,6 +194,11 @@ st_prepare_vertex_program(struct gl_context *ctx,
stvp->input_to_index[attr] = stvp->num_inputs;
stvp->index_to_input[stvp->num_inputs] = attr;
stvp->num_inputs++;
if ((stvp->Base.Base.DoubleInputsRead & BITFIELD64_BIT(attr)) != 0) {
/* add placeholder for second part of a double attribute */
stvp->index_to_input[stvp->num_inputs] = ST_DOUBLE_ATTRIB_PLACEHOLDER;
stvp->num_inputs++;
}
}
}
/* bit of a hack, presetup potentially unused edgeflag input */