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broadcom/compiler: use nir io semantics

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This allows to clean up some code.

Reviewed-by: Eric Anholt <eric@anholt.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6721>
This commit is contained in:
Arcady Goldmints-Orlov
2020-09-28 01:38:34 -05:00
committed by Marge Bot
parent 9b01598fe5
commit e881290979
1 changed files with 13 additions and 25 deletions
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38
src/broadcom/compiler/v3d_nir_lower_io.c
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@@ -124,10 +124,8 @@ v3d_nir_lower_uniform(struct v3d_compile *c, nir_builder *b,
}
static int
v3d_varying_slot_vpm_offset(struct v3d_compile *c, nir_variable *var, int chan)
v3d_varying_slot_vpm_offset(struct v3d_compile *c, unsigned location, unsigned component)
{
int component = var->data.location_frac + chan;
uint32_t num_used_outputs = 0;
struct v3d_varying_slot *used_outputs = NULL;
switch (c->s->info.stage) {
@@ -146,7 +144,7 @@ v3d_varying_slot_vpm_offset(struct v3d_compile *c, nir_variable *var, int chan)
for (int i = 0; i < num_used_outputs; i++) {
struct v3d_varying_slot slot = used_outputs[i];
if (v3d_slot_get_slot(slot) == var->data.location &&
if (v3d_slot_get_slot(slot) == location &&
v3d_slot_get_component(slot) == component) {
return i;
}
@@ -176,36 +174,25 @@ v3d_nir_lower_vpm_output(struct v3d_compile *c, nir_builder *b,
nir_load_var(b, state->gs.output_offset_var) : NULL;
int start_comp = nir_intrinsic_component(intr);
unsigned location = nir_intrinsic_io_semantics(intr).location;
nir_ssa_def *src = nir_ssa_for_src(b, intr->src[0],
intr->num_components);
nir_variable *var = NULL;
nir_foreach_shader_out_variable(scan_var, c->s) {
int components = glsl_get_component_slots(scan_var->type);
if (scan_var->data.driver_location != nir_intrinsic_base(intr) ||
start_comp < scan_var->data.location_frac ||
start_comp >= scan_var->data.location_frac + components) {
continue;
}
var = scan_var;
}
assert(var);
/* Save off the components of the position for the setup of VPM inputs
* read by fixed function HW.
*/
if (var->data.location == VARYING_SLOT_POS) {
if (location == VARYING_SLOT_POS) {
for (int i = 0; i < intr->num_components; i++) {
state->pos[start_comp + i] = nir_channel(b, src, i);
}
}
/* Just psiz to the position in the FF header right now. */
if (var->data.location == VARYING_SLOT_PSIZ &&
if (location == VARYING_SLOT_PSIZ &&
state->psiz_vpm_offset != -1) {
v3d_nir_store_output(b, state->psiz_vpm_offset, offset_reg, src);
}
if (var->data.location == VARYING_SLOT_LAYER) {
if (location == VARYING_SLOT_LAYER) {
assert(c->s->info.stage == MESA_SHADER_GEOMETRY);
nir_ssa_def *header = nir_load_var(b, state->gs.header_var);
header = nir_iand(b, header, nir_imm_int(b, 0xff00ffff));
@@ -250,15 +237,13 @@ v3d_nir_lower_vpm_output(struct v3d_compile *c, nir_builder *b,
*/
for (int i = 0; i < intr->num_components; i++) {
int vpm_offset =
v3d_varying_slot_vpm_offset(c, var,
i +
start_comp -
var->data.location_frac);
v3d_varying_slot_vpm_offset(c, location, start_comp + i);
if (vpm_offset == -1)
continue;
if (var->data.compact || glsl_type_is_struct(var->type))
if (nir_src_is_const(intr->src[1]))
vpm_offset += nir_src_as_uint(intr->src[1]) * 4;
BITSET_SET(state->varyings_stored, vpm_offset);
@@ -418,7 +403,10 @@ v3d_nir_lower_io_update_output_var_base(struct v3d_compile *c,
continue;
}
int vpm_offset = v3d_varying_slot_vpm_offset(c, var, 0);
int vpm_offset =
v3d_varying_slot_vpm_offset(c,
var->data.location,
var->data.location_frac);
if (vpm_offset != -1) {
var->data.driver_location =
state->varyings_vpm_offset + vpm_offset;