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r600/sfn: Add support for helper invocations

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Signed-off-by: Gert Wollny <gert.wollny@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6879>
This commit is contained in:
Gert Wollny
2020-09-27 17:09:03 +02:00
committed by Marge Bot
parent 6aa196b673
commit bc32d41a9b
3 changed files with 21 additions and 1 deletions
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1
src/gallium/drivers/r600/sfn/sfn_shader_base.h
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@@ -133,6 +133,7 @@ protected:
es_vertexid,
es_tess_coord,
es_primitive_id,
es_helper_invocation,
es_last
};

20
src/gallium/drivers/r600/sfn/sfn_shader_fragment.cpp
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@@ -136,6 +136,9 @@ bool FragmentShaderFromNir::scan_sysvalue_access(nir_instr *instr)
case nir_intrinsic_interp_deref_at_sample:
m_enable_sample_interpolators = true;
break;
case nir_intrinsic_load_helper_invocation:
m_sv_values.set(es_helper_invocation);
break;
default:
;
}
@@ -288,6 +291,20 @@ void FragmentShaderFromNir::emit_shader_start()
m_frag_pos[i] = reg;
}
}
if (m_sv_values.test(es_helper_invocation)) {
m_helper_invocation = get_temp_register();
auto dummy = PValue(new GPRValue(m_helper_invocation->sel(), 7));
emit_instruction(new AluInstruction(op1_mov, m_helper_invocation, literal(-1), {alu_write, alu_last_instr}));
GPRVector dst({m_helper_invocation, dummy, dummy, dummy});
auto vtx = new FetchInstruction(dst, m_helper_invocation,
R600_BUFFER_INFO_CONST_BUFFER, bim_none);
vtx->set_flag(vtx_vpm);
vtx->set_flag(vtx_use_tc);
vtx->set_dest_swizzle({4,7,7,7});
emit_instruction(vtx);
}
}
bool FragmentShaderFromNir::do_emit_store_deref(const nir_variable *out_var, nir_intrinsic_instr* instr)
@@ -387,7 +404,8 @@ bool FragmentShaderFromNir::emit_intrinsic_instruction_override(nir_intrinsic_in
return emit_interp_deref_at_centroid(instr);
case nir_intrinsic_load_sample_pos:
return emit_load_sample_pos(instr);
case nir_intrinsic_load_helper_invocation:
return load_preloaded_value(instr->dest, 0, m_helper_invocation);
default:
return false;
}

1
src/gallium/drivers/r600/sfn/sfn_shader_fragment.h
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@@ -88,6 +88,7 @@ private:
PValue m_front_face_reg;
PValue m_sample_mask_reg;
PValue m_sample_id_reg;
PValue m_helper_invocation;
GPRVector m_frag_pos;
bool m_need_back_color;
bool m_front_face_loaded;