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pan/bi: Add VAR_TEX fusing unit test 

As fusing VAR_TEX is an optimization, it's helpful to have unit tests since
functional tests won't check that the optimization triggers when expected.
Originally written when I was touching the VAR_TEX code. Those changes have
since been dropped by the unit test remains useful.

Signed-off-by: Alyssa Rosenzweig <alyssa@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/16752>
This commit is contained in:
Alyssa Rosenzweig 2022-05-27 14:13:40 -04:00
parent 1727310ea1
commit e898e2466b
1 changed files with 17 additions and 0 deletions
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17
src/panfrost/bifrost/test/test-optimizer.cpp
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@ -421,3 +421,20 @@ TEST_F(Optimizer, DoNotFuseMixedSizeResultType)
bi_fcmp_f32(b, bi_abs(x), bi_neg(y), BI_CMPF_LE, BI_RESULT_TYPE_M1),
BI_MUX_INT_ZERO));
}
TEST_F(Optimizer, VarTexCoord32)
{
CASE({
bi_index ld = bi_ld_var_imm(b, bi_null(), BI_REGISTER_FORMAT_F32, BI_SAMPLE_CENTER, BI_UPDATE_STORE, BI_VECSIZE_V2, 0);
bi_index x = bi_temp(b->shader);
bi_index y = bi_temp(b->shader);
bi_instr *split = bi_split_i32_to(b, x, ld);
split->nr_dests = 2;
split->dest[1] = y;
bi_texs_2d_f32_to(b, reg, x, y, false, 0, 0);
}, {
bi_var_tex_f32_to(b, reg, false, BI_SAMPLE_CENTER, BI_UPDATE_STORE, 0, 0);
});
}