Mesa (main): etnaviv: use feature bit for one const src per instuction limitation
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Wed Apr 27 09:19:02 UTC 2022
Module: Mesa
Branch: main
Commit: 8d6b6e31e1889a9b626e7284082777ba6469f91e
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=8d6b6e31e1889a9b626e7284082777ba6469f91e
Author: Lucas Stach <l.stach at pengutronix.de>
Date: Sat Apr 9 19:00:12 2022 +0200
etnaviv: use feature bit for one const src per instuction limitation
Support for multiple constant sources per instruction is not a HALTI5
capability, there is a separate feature bit to signal the availability
of this shader core enhancement.
Signed-off-by: Lucas Stach <l.stach at pengutronix.de>
Reviewed-by: Philipp Zabel <p.zabel at pengutronix.de>
Reviewed-by: Christian Gmeiner <christian.gmeiner at gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/9255>
---
src/gallium/drivers/etnaviv/etnaviv_asm.c | 2 +-
src/gallium/drivers/etnaviv/etnaviv_asm.h | 2 +-
src/gallium/drivers/etnaviv/etnaviv_compiler_nir.c | 7 +++----
src/gallium/drivers/etnaviv/etnaviv_internal.h | 2 ++
src/gallium/drivers/etnaviv/etnaviv_screen.c | 2 ++
5 files changed, 9 insertions(+), 6 deletions(-)
diff --git a/src/gallium/drivers/etnaviv/etnaviv_asm.c b/src/gallium/drivers/etnaviv/etnaviv_asm.c
index ab6bb4c616e..0b6deca9b4f 100644
--- a/src/gallium/drivers/etnaviv/etnaviv_asm.c
+++ b/src/gallium/drivers/etnaviv/etnaviv_asm.c
@@ -65,7 +65,7 @@ etna_assemble(uint32_t *out, const struct etna_inst *inst)
if (inst->imm && inst->src[2].use)
return 1;
- if (!inst->halti5 && !check_uniforms(inst))
+ if (!inst->no_oneconst_limit && !check_uniforms(inst))
BUG("error: generating instruction that accesses two different uniforms");
assert(!(inst->opcode&~0x7f));
diff --git a/src/gallium/drivers/etnaviv/etnaviv_asm.h b/src/gallium/drivers/etnaviv/etnaviv_asm.h
index 03e18a7b45a..a0ac116b092 100644
--- a/src/gallium/drivers/etnaviv/etnaviv_asm.h
+++ b/src/gallium/drivers/etnaviv/etnaviv_asm.h
@@ -97,7 +97,7 @@ struct etna_inst {
unsigned sel_bit0:1; /* select low half mediump */
unsigned sel_bit1:1; /* select high half mediump */
unsigned dst_full:1; /* write to highp register */
- unsigned halti5:1; /* allow multiple different uniform sources */
+ unsigned no_oneconst_limit:1; /* allow multiple different uniform sources */
struct etna_inst_dst dst; /* destination operand */
struct etna_inst_tex tex; /* texture operand */
struct etna_inst_src src[ETNA_NUM_SRC]; /* source operand */
diff --git a/src/gallium/drivers/etnaviv/etnaviv_compiler_nir.c b/src/gallium/drivers/etnaviv/etnaviv_compiler_nir.c
index 4ce6d3c125c..cb150749fdc 100644
--- a/src/gallium/drivers/etnaviv/etnaviv_compiler_nir.c
+++ b/src/gallium/drivers/etnaviv/etnaviv_compiler_nir.c
@@ -732,7 +732,7 @@ insert_vec_mov(nir_alu_instr *vec, unsigned start_idx, nir_shader *shader)
* -insert movs (nir_lower_vec_to_movs equivalent)
* for non-vecN instructions:
* -try to merge constants as single constant
- * -insert movs for multiple constants (pre-HALTI5)
+ * -insert movs for multiple constants if required
*/
static void
lower_alu(struct etna_compile *c, nir_alu_instr *alu)
@@ -749,8 +749,7 @@ lower_alu(struct etna_compile *c, nir_alu_instr *alu)
case nir_op_vec4:
break;
default:
- /* pre-GC7000L can only have 1 uniform src per instruction */
- if (c->specs->halti >= 5)
+ if (c->specs->has_no_oneconst_limit)
return;
nir_const_value value[4] = {};
@@ -1195,7 +1194,7 @@ etna_compile_shader(struct etna_shader_variant *v)
if (inst->opcode == INST_OPCODE_BRANCH)
inst->imm = block_ptr[inst->imm];
- inst->halti5 = specs->halti >= 5;
+ inst->no_oneconst_limit = specs->has_no_oneconst_limit;
etna_assemble(&code[i * 4], inst);
}
diff --git a/src/gallium/drivers/etnaviv/etnaviv_internal.h b/src/gallium/drivers/etnaviv/etnaviv_internal.h
index 36ddb3bc1ec..cab0d99d8f6 100644
--- a/src/gallium/drivers/etnaviv/etnaviv_internal.h
+++ b/src/gallium/drivers/etnaviv/etnaviv_internal.h
@@ -77,6 +77,8 @@ struct etna_specs {
unsigned has_new_transcendentals : 1;
/* has the new dp2/dpX_norm instructions, among others */
unsigned has_halti2_instructions : 1;
+ /* has no limit on the number of constant sources per instruction */
+ unsigned has_no_oneconst_limit : 1;
/* has V4_COMPRESSION */
unsigned v4_compression : 1;
/* supports single-buffer rendering with multiple pixel pipes */
diff --git a/src/gallium/drivers/etnaviv/etnaviv_screen.c b/src/gallium/drivers/etnaviv/etnaviv_screen.c
index acf33ab6c5a..b82063f4858 100644
--- a/src/gallium/drivers/etnaviv/etnaviv_screen.c
+++ b/src/gallium/drivers/etnaviv/etnaviv_screen.c
@@ -837,6 +837,8 @@ etna_get_specs(struct etna_screen *screen)
VIV_FEATURE(screen, chipMinorFeatures3, HAS_FAST_TRANSCENDENTALS);
screen->specs.has_halti2_instructions =
VIV_FEATURE(screen, chipMinorFeatures4, HALTI2);
+ screen->specs.has_no_oneconst_limit =
+ VIV_FEATURE(screen, chipMinorFeatures8, SH_NO_ONECONST_LIMIT);
screen->specs.v4_compression =
VIV_FEATURE(screen, chipMinorFeatures6, V4_COMPRESSION);
screen->specs.seamless_cube_map =
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