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aco: implement GS on GFX7-8

Browse source 
GS is the same on GFX6, but GFX6 isn't fully supported yet.

v4: fix regclass
v7: rebase after shader args MR

Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Daniel Schürmann <daniel@schuermann.dev>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/merge_requests/2421>
This commit is contained in:
Rhys Perry 2019-11-14 20:14:01 +00:00 • committed by Marge Bot
parent 40bb81c9dd
commit 8bad100f83
4 changed files with 186 additions and 69 deletions
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177
src/amd/compiler/aco_instruction_selection.cpp
View file

@ -3119,26 +3119,73 @@ void visit_store_vsgs_output(isel_context *ctx, nir_intrinsic_instr *instr)
else
idx += nir_instr_as_load_const(off_instr)->value[0].u32 * 16u;
unsigned itemsize = ctx->program->info->vs.es_info.esgs_itemsize;
unsigned elem_size_bytes = instr->src[0].ssa->bit_size / 8u;
if (ctx->stage == vertex_es) {
Temp esgs_ring = bld.smem(aco_opcode::s_load_dwordx4, bld.def(s4), ctx->program->private_segment_buffer, Operand(RING_ESGS_VS * 16u));
Temp vertex_idx = emit_mbcnt(ctx, bld.def(v1));
Temp wave_idx = bld.sop2(aco_opcode::s_bfe_u32, bld.def(s1), bld.def(s1, scc), get_arg(ctx, ctx->args->merged_wave_info), Operand(4u << 16 | 24));
vertex_idx = bld.vop2(aco_opcode::v_or_b32, bld.def(v1), vertex_idx,
bld.v_mul24_imm(bld.def(v1), as_vgpr(ctx, wave_idx), ctx->program->wave_size));
Temp elems[NIR_MAX_VEC_COMPONENTS * 2];
if (elem_size_bytes == 8) {
for (unsigned i = 0; i < src.size() / 2; i++) {
Temp elem = emit_extract_vector(ctx, src, i, v2);
elems[i*2] = bld.tmp(v1);
elems[i*2+1] = bld.tmp(v1);
bld.pseudo(aco_opcode::p_split_vector, Definition(elems[i*2]), Definition(elems[i*2+1]), elem);
}
write_mask = widen_mask(write_mask, 2);
elem_size_bytes /= 2u;
} else {
for (unsigned i = 0; i < src.size(); i++)
elems[i] = emit_extract_vector(ctx, src, i, v1);
}
Temp lds_base = bld.v_mul24_imm(bld.def(v1), vertex_idx, itemsize);
if (!offset.isUndefined())
lds_base = bld.vadd32(bld.def(v1), offset, lds_base);
while (write_mask) {
unsigned index = u_bit_scan(&write_mask);
unsigned offset = index * elem_size_bytes;
Temp elem = emit_extract_vector(ctx, src, index, RegClass(RegType::vgpr, elem_size_bytes / 4));
unsigned align = 1 << (ffs(itemsize) - 1);
if (idx)
align = std::min(align, 1u << (ffs(idx) - 1));
Operand vaddr_offset(v1);
unsigned const_offset = idx + offset;
if (const_offset >= 4096u) {
vaddr_offset = bld.copy(bld.def(v1), Operand(const_offset / 4096u * 4096u));
const_offset %= 4096u;
}
unsigned elem_size_bytes = instr->src[0].ssa->bit_size / 8;
store_lds(ctx, elem_size_bytes, src, write_mask, lds_base, idx, align);
aco_ptr<MTBUF_instruction> mtbuf{create_instruction<MTBUF_instruction>(aco_opcode::tbuffer_store_format_x, Format::MTBUF, 4, 0)};
mtbuf->operands[0] = vaddr_offset;
mtbuf->operands[1] = Operand(esgs_ring);
mtbuf->operands[2] = Operand(get_arg(ctx, ctx->args->es2gs_offset));
mtbuf->operands[3] = Operand(elem);
mtbuf->offen = !vaddr_offset.isUndefined();
mtbuf->dfmt = V_008F0C_BUF_DATA_FORMAT_32;
mtbuf->nfmt = V_008F0C_BUF_NUM_FORMAT_UINT;
mtbuf->offset = const_offset;
mtbuf->glc = true;
mtbuf->slc = true;
mtbuf->barrier = barrier_none;
mtbuf->can_reorder = true;
bld.insert(std::move(mtbuf));
}
} else {
unsigned itemsize = ctx->program->info->vs.es_info.esgs_itemsize;
Temp vertex_idx = emit_mbcnt(ctx, bld.def(v1));
Temp wave_idx = bld.sop2(aco_opcode::s_bfe_u32, bld.def(s1), bld.def(s1, scc), get_arg(ctx, ctx->args->merged_wave_info), Operand(4u << 16 | 24));
vertex_idx = bld.vop2(aco_opcode::v_or_b32, bld.def(v1), vertex_idx,
bld.v_mul24_imm(bld.def(v1), as_vgpr(ctx, wave_idx), ctx->program->wave_size));
Temp lds_base = bld.v_mul24_imm(bld.def(v1), vertex_idx, itemsize);
if (!offset.isUndefined())
lds_base = bld.vadd32(bld.def(v1), offset, lds_base);
unsigned align = 1 << (ffs(itemsize) - 1);
if (idx)
align = std::min(align, 1u << (ffs(idx) - 1));
store_lds(ctx, elem_size_bytes, src, write_mask, lds_base, idx, align);
}
}
void visit_store_gs_output_gfx9(isel_context *ctx, nir_intrinsic_instr *instr)
void visit_store_gs_output(isel_context *ctx, nir_intrinsic_instr *instr)
{
/* This wouldn't work if it wasn't in the same block as the
* emit_vertex_with_counter intrinsic but that doesn't happen because of
@ -3172,10 +3219,11 @@ void visit_store_output(isel_context *ctx, nir_intrinsic_instr *instr)
visit_store_vs_output(ctx, instr);
} else if (ctx->stage == fragment_fs) {
visit_store_fs_output(ctx, instr);
} else if (ctx->stage == vertex_geometry_gs && ctx->shader->info.stage == MESA_SHADER_VERTEX) {
} else if (ctx->stage == vertex_es ||
(ctx->stage == vertex_geometry_gs && ctx->shader->info.stage == MESA_SHADER_VERTEX)) {
visit_store_vsgs_output(ctx, instr);
} else if (ctx->stage == vertex_geometry_gs && ctx->shader->info.stage == MESA_SHADER_GEOMETRY) {
visit_store_gs_output_gfx9(ctx, instr);
} else if (ctx->shader->info.stage == MESA_SHADER_GEOMETRY) {
visit_store_gs_output(ctx, instr);
} else {
unreachable("Shader stage not implemented");
}
@ -3488,7 +3536,7 @@ void visit_load_input(isel_context *ctx, nir_intrinsic_instr *instr)
void visit_load_per_vertex_input(isel_context *ctx, nir_intrinsic_instr *instr)
{
assert(ctx->stage == vertex_geometry_gs);
assert(ctx->stage == vertex_geometry_gs || ctx->stage == geometry_gs);
assert(ctx->shader->info.stage == MESA_SHADER_GEOMETRY);
Builder bld(ctx->program, ctx->block);
@ -3500,9 +3548,14 @@ void visit_load_per_vertex_input(isel_context *ctx, nir_intrinsic_instr *instr)
* much in practice */
Temp indirect_vertex = as_vgpr(ctx, get_ssa_temp(ctx, instr->src[0].ssa));
for (unsigned i = 0; i < ctx->shader->info.gs.vertices_in; i++) {
Temp elem = get_arg(ctx, ctx->args->gs_vtx_offset[i / 2u * 2u]);
if (i % 2u)
elem = bld.vop2(aco_opcode::v_lshrrev_b32, bld.def(v1), Operand(16u), elem);
Temp elem;
if (ctx->stage == vertex_geometry_gs) {
elem = get_arg(ctx, ctx->args->gs_vtx_offset[i / 2u * 2u]);
if (i % 2u)
elem = bld.vop2(aco_opcode::v_lshrrev_b32, bld.def(v1), Operand(16u), elem);
} else {
elem = get_arg(ctx, ctx->args->gs_vtx_offset[i]);
}
if (offset.id()) {
Temp cond = bld.vopc(aco_opcode::v_cmp_eq_u32, bld.hint_vcc(bld.def(s2)),
Operand(i), indirect_vertex);
@ -3511,12 +3564,16 @@ void visit_load_per_vertex_input(isel_context *ctx, nir_intrinsic_instr *instr)
offset = elem;
}
}
offset = bld.vop2(aco_opcode::v_and_b32, bld.def(v1), Operand(0xffffu), offset);
if (ctx->stage == vertex_geometry_gs)
offset = bld.vop2(aco_opcode::v_and_b32, bld.def(v1), Operand(0xffffu), offset);
} else {
unsigned vertex = nir_src_as_uint(instr->src[0]);
offset = bld.vop3(
if (ctx->stage == vertex_geometry_gs)
offset = bld.vop3(
aco_opcode::v_bfe_u32, bld.def(v1), get_arg(ctx, ctx->args->gs_vtx_offset[vertex / 2u * 2u]),
Operand((vertex % 2u) * 16u), Operand(16u));
Operand((vertex % 2u) * 16u), Operand(16u));
else
offset = get_arg(ctx, ctx->args->gs_vtx_offset[vertex]);
}
unsigned const_offset = nir_intrinsic_base(instr);
@ -3535,13 +3592,57 @@ void visit_load_per_vertex_input(isel_context *ctx, nir_intrinsic_instr *instr)
offset = bld.vop2(aco_opcode::v_lshlrev_b32, bld.def(v1), Operand(2u), offset);
unsigned itemsize = ctx->program->info->vs.es_info.esgs_itemsize;
unsigned align = 16; /* alignment of indirect offset */
align = std::min(align, 1u << (ffs(itemsize) - 1));
if (const_offset)
align = std::min(align, 1u << (ffs(const_offset) - 1));
unsigned elem_size_bytes = instr->dest.ssa.bit_size / 8;
load_lds(ctx, elem_size_bytes, dst, offset, const_offset, align);
if (ctx->stage == geometry_gs) {
Temp esgs_ring = bld.smem(aco_opcode::s_load_dwordx4, bld.def(s4), ctx->program->private_segment_buffer, Operand(RING_ESGS_GS * 16u));
const_offset *= ctx->program->wave_size;
std::array<Temp,NIR_MAX_VEC_COMPONENTS> elems;
aco_ptr<Pseudo_instruction> vec{create_instruction<Pseudo_instruction>(
aco_opcode::p_create_vector, Format::PSEUDO, instr->dest.ssa.num_components, 1)};
for (unsigned i = 0; i < instr->dest.ssa.num_components; i++) {
Temp subelems[2];
for (unsigned j = 0; j < elem_size_bytes / 4; j++) {
Operand soffset(0u);
if (const_offset >= 4096u)
soffset = bld.copy(bld.def(s1), Operand(const_offset / 4096u * 4096u));
aco_ptr<MUBUF_instruction> mubuf{create_instruction<MUBUF_instruction>(aco_opcode::buffer_load_dword, Format::MUBUF, 3, 1)};
mubuf->definitions[0] = bld.def(v1);
subelems[j] = mubuf->definitions[0].getTemp();
mubuf->operands[0] = Operand(offset);
mubuf->operands[1] = Operand(esgs_ring);
mubuf->operands[2] = Operand(soffset);
mubuf->offen = true;
mubuf->offset = const_offset % 4096u;
mubuf->glc = true;
mubuf->dlc = ctx->options->chip_class >= GFX10;
mubuf->barrier = barrier_none;
mubuf->can_reorder = true;
bld.insert(std::move(mubuf));
const_offset += ctx->program->wave_size * 4u;
}
if (elem_size_bytes == 4)
elems[i] = subelems[0];
else
elems[i] = bld.pseudo(aco_opcode::p_create_vector, bld.def(v2), subelems[0], subelems[1]);
vec->operands[i] = Operand(elems[i]);
}
vec->definitions[0] = Definition(dst);
ctx->block->instructions.emplace_back(std::move(vec));
ctx->allocated_vec.emplace(dst.id(), elems);
} else {
unsigned align = 16; /* alignment of indirect offset */
align = std::min(align, 1u << (ffs(itemsize) - 1));
if (const_offset)
align = std::min(align, 1u << (ffs(const_offset) - 1));
load_lds(ctx, elem_size_bytes, dst, offset, const_offset, align);
}
}
Temp load_desc_ptr(isel_context *ctx, unsigned desc_set)
@ -5830,8 +5931,7 @@ void visit_emit_vertex_with_counter(isel_context *ctx, nir_intrinsic_instr *inst
ctx->vsgs_output.mask[i] = 0;
}
Temp gs_wave_id = bld.sop2(aco_opcode::s_bfe_u32, bld.def(s1, m0), bld.def(s1, scc), get_arg(ctx, ctx->args->merged_wave_info), Operand((8u << 16) | 16u));
bld.sopp(aco_opcode::s_sendmsg, bld.m0(gs_wave_id), -1, sendmsg_gs(false, true, stream));
bld.sopp(aco_opcode::s_sendmsg, bld.m0(ctx->gs_wave_id), -1, sendmsg_gs(false, true, stream));
}
Temp emit_boolean_reduce(isel_context *ctx, nir_op op, unsigned cluster_size, Temp src)
@ -6159,7 +6259,7 @@ void visit_intrinsic(isel_context *ctx, nir_intrinsic_instr *instr)
}
case nir_intrinsic_load_view_index:
case nir_intrinsic_load_layer_id: {
if (instr->intrinsic == nir_intrinsic_load_view_index && (ctx->stage & sw_vs)) {
if (instr->intrinsic == nir_intrinsic_load_view_index && (ctx->stage & (sw_vs | sw_gs))) {
Temp dst = get_ssa_temp(ctx, &instr->dest.ssa);
bld.copy(Definition(dst), Operand(get_arg(ctx, ctx->args->ac.view_index)));
break;
@ -6849,9 +6949,8 @@ void visit_intrinsic(isel_context *ctx, nir_intrinsic_instr *instr)
break;
}
case nir_intrinsic_end_primitive_with_counter: {
Temp gs_wave_id = bld.sop2(aco_opcode::s_bfe_u32, bld.def(s1, m0), bld.def(s1, scc), get_arg(ctx, ctx->args->merged_wave_info), Operand((8u << 16) | 16u));
unsigned stream = nir_intrinsic_stream_id(instr);
bld.sopp(aco_opcode::s_sendmsg, bld.m0(gs_wave_id), -1, sendmsg_gs(true, false, stream));
bld.sopp(aco_opcode::s_sendmsg, bld.m0(ctx->gs_wave_id), -1, sendmsg_gs(true, false, stream));
break;
}
case nir_intrinsic_set_vertex_count: {
@ -8742,7 +8841,10 @@ void select_program(Program *program,
assert(ctx.stage == vertex_geometry_gs);
bld.barrier(aco_opcode::p_memory_barrier_shared);
bld.sopp(aco_opcode::s_barrier);
}
ctx.gs_wave_id = bld.sop2(aco_opcode::s_bfe_u32, bld.def(s1, m0), bld.def(s1, scc), get_arg(&ctx, args->merged_wave_info), Operand((8u << 16) | 16u));
} else if (ctx.stage == geometry_gs)
ctx.gs_wave_id = get_arg(&ctx, args->gs_wave_id);
if (ctx.stage == fragment_fs)
handle_bc_optimize(&ctx);
@ -8755,11 +8857,10 @@ void select_program(Program *program,
if (ctx.stage == vertex_vs) {
create_vs_exports(&ctx);
} else if (nir->info.stage == MESA_SHADER_GEOMETRY && ctx.stage == vertex_geometry_gs) {
} else if (nir->info.stage == MESA_SHADER_GEOMETRY) {
Builder bld(ctx.program, ctx.block);
Temp gs_wave_id = bld.sop2(aco_opcode::s_bfe_u32, bld.def(s1, m0), bld.def(s1, scc), get_arg(&ctx, args->merged_wave_info), Operand((8u << 16) | 16u));
bld.barrier(aco_opcode::p_memory_barrier_gs_data);
bld.sopp(aco_opcode::s_sendmsg, bld.m0(gs_wave_id), -1, sendmsg_gs_done(false, false, 0));
bld.sopp(aco_opcode::s_sendmsg, bld.m0(ctx.gs_wave_id), -1, sendmsg_gs_done(false, false, 0));
}
if (shader_count >= 2) {

30
src/amd/compiler/aco_instruction_selection_setup.cpp
View file

@ -80,6 +80,9 @@ struct isel_context {
/* VS inputs */
bool needs_instance_id;
/* GS inputs */
Temp gs_wave_id;
/* gathered information */
uint64_t input_masks[MESA_SHADER_COMPUTE];
uint64_t output_masks[MESA_SHADER_COMPUTE];
@ -672,6 +675,9 @@ setup_vs_variables(isel_context *ctx, nir_shader *nir)
{
if (ctx->stage == vertex_geometry_gs)
variable->data.driver_location = util_bitcount64(ctx->output_masks[nir->info.stage] & ((1ull << variable->data.location) - 1ull)) * 4;
else if (ctx->stage == vertex_es)
//TODO: make this more compact
variable->data.driver_location = shader_io_get_unique_index((gl_varying_slot)variable->data.location) * 4;
else
variable->data.driver_location = variable->data.location * 4;
}
@ -723,7 +729,7 @@ setup_vs_variables(isel_context *ctx, nir_shader *nir)
pos_written |= 1 << 3;
outinfo->pos_exports = util_bitcount(pos_written);
} else if (ctx->stage == vertex_geometry_gs) {
} else if (ctx->stage == vertex_geometry_gs || ctx->stage == vertex_es) {
/* TODO: radv_nir_shader_info_pass() already sets this but it's larger
* than it needs to be in order to set it better, we have to improve
* radv_nir_shader_info_pass() because gfx9_get_gs_info() uses
@ -756,14 +762,22 @@ setup_variables(isel_context *ctx, nir_shader *nir)
break;
}
case MESA_SHADER_GEOMETRY: {
assert(ctx->stage == vertex_geometry_gs);
nir_foreach_variable(variable, &nir->inputs) {
variable->data.driver_location = util_bitcount64(ctx->input_masks[nir->info.stage] & ((1ull << variable->data.location) - 1ull)) * 4;
assert(ctx->stage == vertex_geometry_gs || ctx->stage == geometry_gs);
if (ctx->stage == vertex_geometry_gs) {
nir_foreach_variable(variable, &nir->inputs) {
variable->data.driver_location = util_bitcount64(ctx->input_masks[nir->info.stage] & ((1ull << variable->data.location) - 1ull)) * 4;
}
} else {
//TODO: make this more compact
nir_foreach_variable(variable, &nir->inputs) {
variable->data.driver_location = shader_io_get_unique_index((gl_varying_slot)variable->data.location) * 4;
}
}
nir_foreach_variable(variable, &nir->outputs) {
variable->data.driver_location = variable->data.location * 4;
}
ctx->program->info->gs.es_type = MESA_SHADER_VERTEX; /* tesselation shaders are not yet supported */
if (ctx->stage == vertex_geometry_gs)
ctx->program->info->gs.es_type = MESA_SHADER_VERTEX; /* tesselation shaders are not yet supported */
break;
}
default:
@ -849,8 +863,12 @@ setup_isel_context(Program* program,
}
bool gfx9_plus = args->options->chip_class >= GFX9;
bool ngg = args->shader_info->is_ngg && args->options->chip_class >= GFX10;
if (program->stage == sw_vs)
if (program->stage == sw_vs && args->shader_info->vs.as_es)
program->stage |= hw_es;
else if (program->stage == sw_vs && !args->shader_info->vs.as_ls)
program->stage |= hw_vs;
else if (program->stage == sw_gs)
program->stage |= hw_gs;
else if (program->stage == sw_fs)
program->stage |= hw_fs;
else if (program->stage == sw_cs)

23
src/amd/vulkan/radv_shader.c
View file

@ -152,29 +152,6 @@ radv_can_dump_shader_stats(struct radv_device *device,
module && !module->nir;
}
unsigned shader_io_get_unique_index(gl_varying_slot slot)
{
/* handle patch indices separate */
if (slot == VARYING_SLOT_TESS_LEVEL_OUTER)
return 0;
if (slot == VARYING_SLOT_TESS_LEVEL_INNER)
return 1;
if (slot >= VARYING_SLOT_PATCH0 && slot <= VARYING_SLOT_TESS_MAX)
return 2 + (slot - VARYING_SLOT_PATCH0);
if (slot == VARYING_SLOT_POS)
return 0;
if (slot == VARYING_SLOT_PSIZ)
return 1;
if (slot == VARYING_SLOT_CLIP_DIST0)
return 2;
if (slot == VARYING_SLOT_CLIP_DIST1)
return 3;
/* 3 is reserved for clip dist as well */
if (slot >= VARYING_SLOT_VAR0 && slot <= VARYING_SLOT_VAR31)
return 4 + (slot - VARYING_SLOT_VAR0);
unreachable("illegal slot in get unique index\n");
}
VkResult radv_CreateShaderModule(
VkDevice _device,
const VkShaderModuleCreateInfo* pCreateInfo,

25
src/amd/vulkan/radv_shader.h
View file

@ -478,8 +478,29 @@ bool
radv_can_dump_shader_stats(struct radv_device *device,
struct radv_shader_module *module);
unsigned
shader_io_get_unique_index(gl_varying_slot slot);
static inline unsigned
shader_io_get_unique_index(gl_varying_slot slot)
{
/* handle patch indices separate */
if (slot == VARYING_SLOT_TESS_LEVEL_OUTER)
return 0;
if (slot == VARYING_SLOT_TESS_LEVEL_INNER)
return 1;
if (slot >= VARYING_SLOT_PATCH0 && slot <= VARYING_SLOT_TESS_MAX)
return 2 + (slot - VARYING_SLOT_PATCH0);
if (slot == VARYING_SLOT_POS)
return 0;
if (slot == VARYING_SLOT_PSIZ)
return 1;
if (slot == VARYING_SLOT_CLIP_DIST0)
return 2;
if (slot == VARYING_SLOT_CLIP_DIST1)
return 3;
/* 3 is reserved for clip dist as well */
if (slot >= VARYING_SLOT_VAR0 && slot <= VARYING_SLOT_VAR31)
return 4 + (slot - VARYING_SLOT_VAR0);
unreachable("illegal slot in get unique index\n");
}
void
radv_lower_fs_io(nir_shader *nir);