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i965: Implement NIR intrinsics for loading VS system values. 

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>
This commit is contained in:
Kenneth Graunke 2015-03-09 01:58:55 -07:00
parent 2c79f6f9c3
commit 34628a838a
1 changed files with 51 additions and 0 deletions
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51
src/mesa/drivers/dri/i965/brw_fs_nir.cpp
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@ -363,6 +363,30 @@ emit_system_values_block(nir_block *block, void *void_visitor)
nir_intrinsic_instr *intrin = nir_instr_as_intrinsic(instr);
switch (intrin->intrinsic) {
case nir_intrinsic_load_vertex_id:
unreachable("should be lowered by lower_vertex_id().");
case nir_intrinsic_load_vertex_id_zero_base:
assert(v->stage == MESA_SHADER_VERTEX);
reg = &v->nir_system_values[SYSTEM_VALUE_VERTEX_ID_ZERO_BASE];
if (reg->file == BAD_FILE)
*reg = *v->emit_vs_system_value(SYSTEM_VALUE_VERTEX_ID_ZERO_BASE);
break;
case nir_intrinsic_load_base_vertex:
assert(v->stage == MESA_SHADER_VERTEX);
reg = &v->nir_system_values[SYSTEM_VALUE_BASE_VERTEX];
if (reg->file == BAD_FILE)
*reg = *v->emit_vs_system_value(SYSTEM_VALUE_BASE_VERTEX);
break;
case nir_intrinsic_load_instance_id:
assert(v->stage == MESA_SHADER_VERTEX);
reg = &v->nir_system_values[SYSTEM_VALUE_INSTANCE_ID];
if (reg->file == BAD_FILE)
*reg = *v->emit_vs_system_value(SYSTEM_VALUE_INSTANCE_ID);
break;
case nir_intrinsic_load_sample_pos:
assert(v->stage == MESA_SHADER_FRAGMENT);
reg = &v->nir_system_values[SYSTEM_VALUE_SAMPLE_POS];
@ -1344,6 +1368,33 @@ fs_visitor::nir_emit_intrinsic(nir_intrinsic_instr *instr)
*emit_frontfacing_interpolation()));
break;
case nir_intrinsic_load_vertex_id:
unreachable("should be lowered by lower_vertex_id()");
case nir_intrinsic_load_vertex_id_zero_base: {
fs_reg vertex_id = nir_system_values[SYSTEM_VALUE_VERTEX_ID_ZERO_BASE];
assert(vertex_id.file != BAD_FILE);
dest.type = vertex_id.type;
emit(MOV(dest, vertex_id));
break;
}
case nir_intrinsic_load_base_vertex: {
fs_reg base_vertex = nir_system_values[SYSTEM_VALUE_BASE_VERTEX];
assert(base_vertex.file != BAD_FILE);
dest.type = base_vertex.type;
emit(MOV(dest, base_vertex));
break;
}
case nir_intrinsic_load_instance_id: {
fs_reg instance_id = nir_system_values[SYSTEM_VALUE_INSTANCE_ID];
assert(instance_id.file != BAD_FILE);
dest.type = instance_id.type;
emit(MOV(dest, instance_id));
break;
}
case nir_intrinsic_load_sample_mask_in: {
fs_reg sample_mask_in = nir_system_values[SYSTEM_VALUE_SAMPLE_MASK_IN];
assert(sample_mask_in.file != BAD_FILE);