diff options
| author | Emil Velikov <[email protected]> | 2015-10-07 11:59:26 +0100 |
|---|---|---|
| committer | Emil Velikov <[email protected]> | 2015-10-30 17:22:32 +0000 |
| commit | 7682844f34401f1d27c9c8f80eadbcb57286e7c4 (patch) | |
| tree | 00b4170ba368ba0e3c0311bf9900256ca7dfe2db | |
| parent | f1d98fc90ab6f1f424b26a5d3b3ead3b8614069a (diff) | |
nir: add shader_clock intrinsic
v2: Add flags and inline comment/description.
v3: None of the input/outputs are variables
v4: Drop clockARB reference, relate code motion barrier comment wrt
intrinsic flag.
v5: Drop the "thus we can eliminate..." comment (Connor)
Signed-off-by: Emil Velikov <[email protected]>
Reviewed-by: Connor Abbott <[email protected]>
Reviewed-by: Matt Turner <[email protected]>
| -rw-r--r-- | src/glsl/nir/glsl_to_nir.cpp | 6 | ||||
| -rw-r--r-- | src/glsl/nir/nir_intrinsics.h | 8 |
2 files changed, 14 insertions, 0 deletions
diff --git a/src/glsl/nir/glsl_to_nir.cpp b/src/glsl/nir/glsl_to_nir.cpp index 7275b48eff0..57aba5be0f5 100644 --- a/src/glsl/nir/glsl_to_nir.cpp +++ b/src/glsl/nir/glsl_to_nir.cpp @@ -717,6 +717,8 @@ nir_visitor::visit(ir_call *ir) op = nir_intrinsic_ssbo_atomic_exchange; } else if (strcmp(ir->callee_name(), "__intrinsic_ssbo_atomic_comp_swap_internal") == 0) { op = nir_intrinsic_ssbo_atomic_comp_swap; + } else if (strcmp(ir->callee_name(), "__intrinsic_shader_clock") == 0) { + op = nir_intrinsic_shader_clock; } else { unreachable("not reached"); } @@ -821,6 +823,10 @@ nir_visitor::visit(ir_call *ir) case nir_intrinsic_memory_barrier: nir_instr_insert_after_cf_list(this->cf_node_list, &instr->instr); break; + case nir_intrinsic_shader_clock: + nir_ssa_dest_init(&instr->instr, &instr->dest, 1, NULL); + nir_instr_insert_after_cf_list(this->cf_node_list, &instr->instr); + break; case nir_intrinsic_store_ssbo: { exec_node *param = ir->actual_parameters.get_head(); ir_rvalue *block = ((ir_instruction *)param)->as_rvalue(); diff --git a/src/glsl/nir/nir_intrinsics.h b/src/glsl/nir/nir_intrinsics.h index c1fb1bad4bc..c2b6fe7166d 100644 --- a/src/glsl/nir/nir_intrinsics.h +++ b/src/glsl/nir/nir_intrinsics.h @@ -83,6 +83,14 @@ BARRIER(discard) */ BARRIER(memory_barrier) +/* + * Shader clock intrinsic with semantics analogous to the clock2x32ARB() + * GLSL intrinsic. + * The latter can be used as code motion barrier, which is currently not + * feasible with NIR. + */ +INTRINSIC(shader_clock, 0, ARR(), true, 1, 0, 0, NIR_INTRINSIC_CAN_ELIMINATE) + /** A conditional discard, with a single boolean source. */ INTRINSIC(discard_if, 1, ARR(1), false, 0, 0, 0, 0) |