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authorKenneth Graunke <kenneth@whitecape.org>2015-07-10 00:16:19 -0700
committerKenneth Graunke <kenneth@whitecape.org>2015-10-21 14:27:58 -0700
commit48c76eae8e52fba2fe22d2cfa7f3c94a5420feb2 (patch)
tree3974f20a320a3c264132db0d6ca0a9e8f143fd20 /src
parentc5ae34f38f239d346090212a9f33a947a3b7642e (diff)
i965: Implement gl_InvocationID.
It's stored in bits 31:27 of g1 (along with the URB handles). Signed-off-by: Kenneth Graunke <kenneth@whitecape.org> Reviewed-by: Kristian Høgsberg <krh@bitplanet.net>
Diffstat (limited to 'src')
-rw-r--r--src/mesa/drivers/dri/i965/brw_fs_nir.cpp13
1 files changed, 13 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_fs_nir.cpp b/src/mesa/drivers/dri/i965/brw_fs_nir.cpp
index 123e86eca37..e1fb12060c8 100644
--- a/src/mesa/drivers/dri/i965/brw_fs_nir.cpp
+++ b/src/mesa/drivers/dri/i965/brw_fs_nir.cpp
@@ -189,6 +189,18 @@ emit_system_values_block(nir_block *block, void *void_visitor)
*reg = *v->emit_vs_system_value(SYSTEM_VALUE_INSTANCE_ID);
break;
+ case nir_intrinsic_load_invocation_id:
+ assert(v->stage == MESA_SHADER_GEOMETRY);
+ reg = &v->nir_system_values[SYSTEM_VALUE_INVOCATION_ID];
+ if (reg->file == BAD_FILE) {
+ const fs_builder abld = v->bld.annotate("gl_InvocationID", NULL);
+ fs_reg g1(retype(brw_vec8_grf(1, 0), BRW_REGISTER_TYPE_UD));
+ fs_reg iid = abld.vgrf(BRW_REGISTER_TYPE_UD, 1);
+ abld.SHR(iid, g1, fs_reg(27u));
+ *reg = iid;
+ }
+ break;
+
case nir_intrinsic_load_sample_pos:
assert(v->stage == MESA_SHADER_FRAGMENT);
reg = &v->nir_system_values[SYSTEM_VALUE_SAMPLE_POS];
@@ -1378,6 +1390,7 @@ fs_visitor::nir_emit_intrinsic(const fs_builder &bld, nir_intrinsic_instr *instr
case nir_intrinsic_load_vertex_id_zero_base:
case nir_intrinsic_load_base_vertex:
case nir_intrinsic_load_instance_id:
+ case nir_intrinsic_load_invocation_id:
case nir_intrinsic_load_sample_mask_in:
case nir_intrinsic_load_sample_id: {
gl_system_value sv = nir_system_value_from_intrinsic(instr->intrinsic);