KonstantinSeurer
/
mesa
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

i965/nir/vec4: Add setup for system values 

Similar to other variable setups, system values will initialize the
corresponding register inside a 'nir_system_values' map, which will then
be queried later when processing the different system value intrinsics
for the appropriate register.

Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>
This commit is contained in:
Alejandro Piñeiro 2015-06-16 17:08:04 +02:00 committed by Jason Ekstrand
parent 01c5617c8e
commit 4023b55fdd
2 changed files with 50 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
src/mesa/drivers/dri/i965/brw_vec4.h
View File

@ -397,6 +397,7 @@ public:
virtual void nir_setup_uniforms(nir_shader *shader);
virtual void nir_setup_uniform(nir_variable *var);
virtual void nir_setup_builtin_uniform(nir_variable *var);
virtual void nir_setup_system_value_intrinsic(nir_intrinsic_instr *instr);
virtual void nir_setup_system_values(nir_shader *shader);
virtual void nir_emit_impl(nir_function_impl *impl);
virtual void nir_emit_cf_list(exec_list *list);
@ -415,6 +416,7 @@ public:
src_reg *nir_inputs;
unsigned *nir_uniform_driver_location;
dst_reg *nir_system_values;
protected:
void emit_vertex();

49
src/mesa/drivers/dri/i965/brw_vec4_nir.cpp
View File

@ -48,16 +48,63 @@ vec4_visitor::emit_nir_code()
}
}
void
vec4_visitor::nir_setup_system_value_intrinsic(nir_intrinsic_instr *instr)
{
dst_reg *reg;
switch (instr->intrinsic) {
case nir_intrinsic_load_vertex_id:
unreachable("should be lowered by lower_vertex_id().");
case nir_intrinsic_load_vertex_id_zero_base:
reg = &this->nir_system_values[SYSTEM_VALUE_VERTEX_ID_ZERO_BASE];
if (reg->file == BAD_FILE)
*reg =
*this->make_reg_for_system_value(SYSTEM_VALUE_VERTEX_ID_ZERO_BASE,
glsl_type::int_type);
break;
case nir_intrinsic_load_base_vertex:
reg = &this->nir_system_values[SYSTEM_VALUE_BASE_VERTEX];
if (reg->file == BAD_FILE)
*reg = *this->make_reg_for_system_value(SYSTEM_VALUE_BASE_VERTEX,
glsl_type::int_type);
break;
case nir_intrinsic_load_instance_id:
reg = &this->nir_system_values[SYSTEM_VALUE_INSTANCE_ID];
if (reg->file == BAD_FILE)
*reg = *this->make_reg_for_system_value(SYSTEM_VALUE_INSTANCE_ID,
glsl_type::int_type);
break;
default:
break;
}
}
static bool
setup_system_values_block(nir_block *block, void *void_visitor)
{
/* @TODO: Not yet implemented */
vec4_visitor *v = (vec4_visitor *)void_visitor;
nir_foreach_instr(block, instr) {
if (instr->type != nir_instr_type_intrinsic)
continue;
nir_intrinsic_instr *intrin = nir_instr_as_intrinsic(instr);
v->nir_setup_system_value_intrinsic(intrin);
}
return true;
}
void
vec4_visitor::nir_setup_system_values(nir_shader *shader)
{
nir_system_values = ralloc_array(mem_ctx, dst_reg, SYSTEM_VALUE_MAX);
nir_foreach_overload(shader, overload) {
assert(strcmp(overload->function->name, "main") == 0);
assert(overload->impl);