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etnaviv: Add support for DP2 instruction

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A two-component dot product instruction is supported with HALTI2, use it
on hardware that supports it.

Signed-off-by: Wladimir J. van der Laan <laanwj@gmail.com>
Reviewed-by: Christian Gmeiner <christian.gmeiner@gmail.com>
This commit is contained in:
Wladimir J. van der Laan 2017-10-01 11:21:20 +02:00 • committed by Christian Gmeiner
parent 80f608b530
commit ec254f4bfa
4 changed files with 7 additions and 1 deletions
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3
src/gallium/drivers/etnaviv/etnaviv_compiler.c
View file

@ -1752,6 +1752,7 @@ static const struct instr_translater translaters[TGSI_OPCODE_LAST] = {
INSTR(RSQ, trans_instr, .opc = INST_OPCODE_RSQ, .src = {2, -1, -1}),
INSTR(MUL, trans_instr, .opc = INST_OPCODE_MUL, .src = {0, 1, -1}),
INSTR(ADD, trans_instr, .opc = INST_OPCODE_ADD, .src = {0, 2, -1}),
INSTR(DP2, trans_instr, .opc = INST_OPCODE_DP2, .src = {0, 1, -1}),
INSTR(DP3, trans_instr, .opc = INST_OPCODE_DP3, .src = {0, 1, -1}),
INSTR(DP4, trans_instr, .opc = INST_OPCODE_DP4, .src = {0, 1, -1}),
INSTR(DST, trans_instr, .opc = INST_OPCODE_DST, .src = {0, 1, -1}),
@ -2293,7 +2294,7 @@ etna_compile_shader(struct etna_shader_variant *v)
.lower_POW = true,
.lower_EXP = true,
.lower_LOG = true,
.lower_DP2 = true,
.lower_DP2 = !specs->has_halti2_instructions,
.lower_TRUNC = true,
};

1
src/gallium/drivers/etnaviv/etnaviv_disasm.c
View file

@ -513,6 +513,7 @@ static const struct opc_info {
OPC(AND),
OPC(XOR),
OPC(NOT),
OPC(DP2),
};
static void

2
src/gallium/drivers/etnaviv/etnaviv_internal.h
View file

@ -72,6 +72,8 @@ struct etna_specs {
unsigned has_shader_range_registers : 1;
/* has the new sin/cos/log functions */
unsigned has_new_transcendentals : 1;
/* has the new dp2/dpX_norm instructions, among others */
unsigned has_halti2_instructions : 1;
/* supports single-buffer rendering with multiple pixel pipes */
unsigned single_buffer : 1;
/* has unified uniforms memory */

2
src/gallium/drivers/etnaviv/etnaviv_screen.c
View file

@ -700,6 +700,8 @@ etna_get_specs(struct etna_screen *screen)
VIV_FEATURE(screen, chipMinorFeatures1, NON_POWER_OF_TWO);
screen->specs.has_new_transcendentals =
VIV_FEATURE(screen, chipMinorFeatures3, HAS_FAST_TRANSCENDENTALS);
screen->specs.has_halti2_instructions =
VIV_FEATURE(screen, chipMinorFeatures4, HALTI2);
if (VIV_FEATURE(screen, chipMinorFeatures3, INSTRUCTION_CACHE)) {
/* GC3000 - this core is capable of loading shaders from