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-rw-r--r--src/gallium/drivers/iris/iris_context.h6
-rw-r--r--src/gallium/drivers/iris/iris_program.c66
-rw-r--r--src/gallium/drivers/iris/iris_screen.c1
-rw-r--r--src/gallium/drivers/iris/iris_state.c9
4 files changed, 82 insertions, 0 deletions
diff --git a/src/gallium/drivers/iris/iris_context.h b/src/gallium/drivers/iris/iris_context.h
index 3009c8d5627..d54f348debe 100644
--- a/src/gallium/drivers/iris/iris_context.h
+++ b/src/gallium/drivers/iris/iris_context.h
@@ -273,6 +273,12 @@ struct iris_uncompiled_shader {
/** Should we use ALT mode for math? Useful for ARB programs. */
bool use_alt_mode;
+
+ /** Constant data scraped from the shader by nir_opt_large_constants */
+ struct pipe_resource *const_data;
+
+ /** Surface state for const_data */
+ struct iris_state_ref const_data_state;
};
/**
diff --git a/src/gallium/drivers/iris/iris_program.c b/src/gallium/drivers/iris/iris_program.c
index e0a6a5c1edd..87b887aa3b6 100644
--- a/src/gallium/drivers/iris/iris_program.c
+++ b/src/gallium/drivers/iris/iris_program.c
@@ -273,6 +273,14 @@ assign_common_binding_table_offsets(const struct gen_device_info *devinfo,
prog_data->binding_table.image_start = 0xd0d0d0d0;
}
+ /* Allocate a slot in the UBO section for NIR constants if present.
+ * We don't include them in iris_compiled_shader::num_cbufs because
+ * they are uploaded separately from shs->constbuf[], but from a shader
+ * point of view, they're another UBO (at the end of the section).
+ */
+ if (nir->constant_data_size > 0)
+ num_cbufs++;
+
if (num_cbufs) {
//assert(info->num_ubos <= BRW_MAX_UBO);
prog_data->binding_table.ubo_start = next_binding_table_offset;
@@ -361,6 +369,7 @@ iris_setup_uniforms(const struct brw_compiler *compiler,
b.cursor = nir_before_block(nir_start_block(impl));
nir_ssa_def *temp_ubo_name = nir_ssa_undef(&b, 1, 32);
+ nir_ssa_def *temp_const_ubo_name = NULL;
/* Turn system value intrinsics into uniforms */
nir_foreach_block(block, impl) {
@@ -372,6 +381,34 @@ iris_setup_uniforms(const struct brw_compiler *compiler,
nir_ssa_def *offset;
switch (intrin->intrinsic) {
+ case nir_intrinsic_load_constant: {
+ /* This one is special because it reads from the shader constant
+ * data and not cbuf0 which gallium uploads for us.
+ */
+ b.cursor = nir_before_instr(instr);
+ nir_ssa_def *offset =
+ nir_iadd_imm(&b, nir_ssa_for_src(&b, intrin->src[0], 1),
+ nir_intrinsic_base(intrin));
+
+ if (temp_const_ubo_name == NULL)
+ temp_const_ubo_name = nir_imm_int(&b, 0);
+
+ nir_intrinsic_instr *load_ubo =
+ nir_intrinsic_instr_create(b.shader, nir_intrinsic_load_ubo);
+ load_ubo->num_components = intrin->num_components;
+ load_ubo->src[0] = nir_src_for_ssa(temp_const_ubo_name);
+ load_ubo->src[1] = nir_src_for_ssa(offset);
+ nir_ssa_dest_init(&load_ubo->instr, &load_ubo->dest,
+ intrin->dest.ssa.num_components,
+ intrin->dest.ssa.bit_size,
+ intrin->dest.ssa.name);
+ nir_builder_instr_insert(&b, &load_ubo->instr);
+
+ nir_ssa_def_rewrite_uses(&intrin->dest.ssa,
+ nir_src_for_ssa(&load_ubo->dest.ssa));
+ nir_instr_remove(&intrin->instr);
+ continue;
+ }
case nir_intrinsic_load_user_clip_plane: {
unsigned ucp = nir_intrinsic_ucp_id(intrin);
@@ -529,6 +566,16 @@ iris_setup_uniforms(const struct brw_compiler *compiler,
if (num_cbufs || num_system_values || nir->num_uniforms)
num_cbufs++;
+ /* Constant loads (if any) need to go at the end of the constant buffers so
+ * we need to know num_cbufs before we can lower to them.
+ */
+ if (temp_const_ubo_name != NULL) {
+ nir_load_const_instr *const_ubo_index =
+ nir_instr_as_load_const(temp_const_ubo_name->parent_instr);
+ assert(const_ubo_index->def.bit_size == 32);
+ const_ubo_index->value[0].u32 = num_cbufs;
+ }
+
*out_system_values = system_values;
*out_num_system_values = num_system_values;
*out_num_cbufs = num_cbufs;
@@ -1514,6 +1561,7 @@ iris_create_uncompiled_shader(struct pipe_context *ctx,
nir_shader *nir,
const struct pipe_stream_output_info *so_info)
{
+ struct iris_context *ice = (void *)ctx;
struct iris_screen *screen = (struct iris_screen *)ctx->screen;
const struct gen_device_info *devinfo = &screen->devinfo;
@@ -1527,6 +1575,19 @@ iris_create_uncompiled_shader(struct pipe_context *ctx,
NIR_PASS_V(nir, brw_nir_lower_image_load_store, devinfo);
NIR_PASS_V(nir, iris_lower_storage_image_derefs);
+ if (nir->constant_data_size > 0) {
+ unsigned data_offset;
+ u_upload_data(ice->shaders.uploader, 0, nir->constant_data_size,
+ 32, nir->constant_data, &data_offset, &ish->const_data);
+
+ struct pipe_shader_buffer psb = {
+ .buffer = ish->const_data,
+ .buffer_offset = data_offset,
+ .buffer_size = nir->constant_data_size,
+ };
+ iris_upload_ubo_ssbo_surf_state(ice, &psb, &ish->const_data_state, false);
+ }
+
ish->program_id = get_new_program_id(screen);
ish->nir = nir;
if (so_info) {
@@ -1771,6 +1832,11 @@ iris_delete_shader_state(struct pipe_context *ctx, void *state, gl_shader_stage
ice->state.dirty |= IRIS_DIRTY_UNCOMPILED_VS << stage;
}
+ if (ish->const_data) {
+ pipe_resource_reference(&ish->const_data, NULL);
+ pipe_resource_reference(&ish->const_data_state.res, NULL);
+ }
+
ralloc_free(ish->nir);
free(ish);
}
diff --git a/src/gallium/drivers/iris/iris_screen.c b/src/gallium/drivers/iris/iris_screen.c
index 611718e90df..b3c4466805e 100644
--- a/src/gallium/drivers/iris/iris_screen.c
+++ b/src/gallium/drivers/iris/iris_screen.c
@@ -647,6 +647,7 @@ iris_screen_create(int fd, const struct pipe_screen_config *config)
screen->compiler->shader_debug_log = iris_shader_debug_log;
screen->compiler->shader_perf_log = iris_shader_perf_log;
screen->compiler->supports_pull_constants = false;
+ screen->compiler->supports_shader_constants = true;
iris_disk_cache_init(screen);
diff --git a/src/gallium/drivers/iris/iris_state.c b/src/gallium/drivers/iris/iris_state.c
index 0f6290ae8dc..fb72c4b5b7d 100644
--- a/src/gallium/drivers/iris/iris_state.c
+++ b/src/gallium/drivers/iris/iris_state.c
@@ -4120,6 +4120,7 @@ iris_populate_binding_table(struct iris_context *ice,
bool pin_only)
{
const struct iris_binder *binder = &ice->state.binder;
+ struct iris_uncompiled_shader *ish = ice->shaders.uncompiled[stage];
struct iris_compiled_shader *shader = ice->shaders.prog[stage];
if (!shader)
return;
@@ -4194,6 +4195,14 @@ iris_populate_binding_table(struct iris_context *ice,
push_bt_entry(addr);
}
+ if (ish->const_data) {
+ iris_use_pinned_bo(batch, iris_resource_bo(ish->const_data), false);
+ iris_use_pinned_bo(batch, iris_resource_bo(ish->const_data_state.res),
+ false);
+ uint32_t addr = ish->const_data_state.offset;
+ push_bt_entry(addr);
+ }
+
bt_assert(ssbo_start, info->num_abos + info->num_ssbos > 0);
/* XXX: st is wasting 16 binding table slots for ABOs. Should add a cap