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pan/bi: Implement load_ubo with the builder

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Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8135>
This commit is contained in:
Alyssa Rosenzweig 2020-12-11 21:00:26 -05:00 • committed by Marge Bot
parent 341e312cf4
commit 2e57684d2d
1 changed files with 36 additions and 0 deletions
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36
src/panfrost/bifrost/bifrost_compile.c
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@ -774,6 +774,42 @@ bi_emit_st_vary(bi_context *ctx, nir_intrinsic_instr *instr)
bi_emit(ctx, st); bi_emit(ctx, st);
} }
static void
bi_emit_load_ubo(bi_builder *b, nir_intrinsic_instr *instr)
{
/* nir_lower_uniforms_to_ubo() should have been called, reserving
* UBO #0 for uniforms even if the shaders doesn't have uniforms.
*/
assert(b->shader->nir->info.first_ubo_is_default_ubo);
bool offset_is_const = nir_src_is_const(instr->src[1]);
bi_index dyn_offset = bi_src_index(&instr->src[1]);
uint32_t const_offset = 0;
/* We may need to offset UBO loads by however many sysvals we have */
unsigned sysval_offset = 16 * b->shader->sysvals.sysval_count;
if (nir_src_is_const(instr->src[1]))
const_offset = nir_src_as_uint(instr->src[1]);
if (nir_src_is_const(instr->src[0]) &&
nir_src_as_uint(instr->src[0]) == 0 &&
b->shader->sysvals.sysval_count) {
if (offset_is_const) {
const_offset += sysval_offset;
} else {
dyn_offset = bi_iadd_u32(b, dyn_offset,
bi_imm_u32(sysval_offset), false);
}
}
bi_load_to(b, instr->num_components * 32,
bi_dest_index(&instr->dest), offset_is_const ?
bi_imm_u32(const_offset) : dyn_offset,
bi_src_index(&instr->src[0]),
BI_SEG_UBO);
}
static void static void
bi_emit_ld_ubo(bi_context *ctx, nir_intrinsic_instr *instr) bi_emit_ld_ubo(bi_context *ctx, nir_intrinsic_instr *instr)
{ {