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i965: Generalize sampler state pointer mangling for non-const 

For now, assume that the addressed sampler can be in any of the
16-sampler banks. If we preserved range information this far, we
could avoid emitting these instructions if the sampler were known
to be contained within one bank.

Signed-off-by: Chris Forbes <chrisf@ijw.co.nz>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
This commit is contained in:
Chris Forbes 2014-08-10 11:39:44 +12:00
parent f7146d1a94
commit 86dc34a0b0
1 changed files with 13 additions and 1 deletions
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14
src/mesa/drivers/dri/i965/brw_eu_emit.c
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@ -2386,7 +2386,19 @@ void brw_adjust_sampler_state_pointer(struct brw_compile *p,
brw_imm_ud(16 * (sampler / 16) * sampler_state_size));
}
} else {
/* XXX: Non-const sampler array indexing case */
/* Non-const sampler array indexing case */
if (brw->gen < 8 && !brw->is_haswell) {
return;
}
struct brw_reg temp = vec1(retype(scratch, BRW_REGISTER_TYPE_UD));
brw_AND(p, temp, sampler_index, brw_imm_ud(0x0f0));
brw_SHL(p, temp, temp, brw_imm_ud(4));
brw_ADD(p,
get_element_ud(header, 3),
get_element_ud(brw_vec8_grf(0, 0), 3),
temp);
}
}