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-rw-r--r--src/glsl/nir/nir_lower_variables.c1
-rw-r--r--src/glsl/nir/nir_opcodes.h5
-rw-r--r--src/glsl/nir/nir_opt_peephole_select.c2
-rw-r--r--src/glsl/nir/nir_to_ssa.c2
-rw-r--r--src/mesa/drivers/dri/i965/brw_fs_nir.cpp11
5 files changed, 15 insertions, 6 deletions
diff --git a/src/glsl/nir/nir_lower_variables.c b/src/glsl/nir/nir_lower_variables.c
index b8961f85ce8..64682056ddc 100644
--- a/src/glsl/nir/nir_lower_variables.c
+++ b/src/glsl/nir/nir_lower_variables.c
@@ -836,6 +836,7 @@ lower_deref_to_ssa_block(nir_block *block, void *void_state)
mov = nir_alu_instr_create(state->mem_ctx, nir_op_bcsel);
mov->src[0].src = nir_src_copy(intrin->predicate,
state->mem_ctx);
+ /* Splat the condition to all channels */
memset(mov->src[0].swizzle, 0, sizeof mov->src[0].swizzle);
mov->src[1].src.is_ssa = true;
diff --git a/src/glsl/nir/nir_opcodes.h b/src/glsl/nir/nir_opcodes.h
index c8230b32df0..310c9d83b7c 100644
--- a/src/glsl/nir/nir_opcodes.h
+++ b/src/glsl/nir/nir_opcodes.h
@@ -325,9 +325,8 @@ TRIOP(flrp, nir_type_float)
* bools (0.0 vs 1.0) and one for integer bools (0 vs ~0).
*/
-OPCODE(fcsel, 3, true, 0, nir_type_float, ARR(1, 0, 0),
- ARR(nir_type_float, nir_type_float, nir_type_float))
-OPCODE(bcsel, 3, true, 0, nir_type_unsigned, ARR(1, 0, 0),
+TRIOP(fcsel, nir_type_float)
+OPCODE(bcsel, 3, true, 0, nir_type_unsigned, ARR(0, 0, 0),
ARR(nir_type_bool, nir_type_unsigned, nir_type_unsigned))
TRIOP(bfi, nir_type_unsigned)
diff --git a/src/glsl/nir/nir_opt_peephole_select.c b/src/glsl/nir/nir_opt_peephole_select.c
index 247fe050a70..3e8c93882d2 100644
--- a/src/glsl/nir/nir_opt_peephole_select.c
+++ b/src/glsl/nir/nir_opt_peephole_select.c
@@ -136,6 +136,8 @@ nir_opt_peephole_select_block(nir_block *block, void *void_state)
nir_phi_instr *phi = nir_instr_as_phi(instr);
nir_alu_instr *sel = nir_alu_instr_create(state->mem_ctx, nir_op_bcsel);
sel->src[0].src = nir_src_copy(if_stmt->condition, state->mem_ctx);
+ /* Splat the condition to all channels */
+ memset(sel->src[0].swizzle, 0, sizeof sel->src[0].swizzle);
assert(exec_list_length(&phi->srcs) == 2);
foreach_list_typed(nir_phi_src, src, node, &phi->srcs) {
diff --git a/src/glsl/nir/nir_to_ssa.c b/src/glsl/nir/nir_to_ssa.c
index 7fdae493887..6b6a0779a6d 100644
--- a/src/glsl/nir/nir_to_ssa.c
+++ b/src/glsl/nir/nir_to_ssa.c
@@ -235,6 +235,8 @@ rewrite_def_forwards(nir_dest *dest, void *_state)
csel->dest.dest.reg.reg = dest->reg.reg;
csel->dest.write_mask = (1 << dest->reg.reg->num_components) - 1;
csel->src[0].src = nir_src_copy(*state->predicate, state->mem_ctx);
+ /* Splat the condition to all channels */
+ memset(csel->src[0].swizzle, 0, sizeof csel->src[0].swizzle);
csel->src[2].src.is_ssa = true;
csel->src[2].src.ssa = get_ssa_src(dest->reg.reg, state);
}
diff --git a/src/mesa/drivers/dri/i965/brw_fs_nir.cpp b/src/mesa/drivers/dri/i965/brw_fs_nir.cpp
index 9eece0170c1..266781bff3b 100644
--- a/src/mesa/drivers/dri/i965/brw_fs_nir.cpp
+++ b/src/mesa/drivers/dri/i965/brw_fs_nir.cpp
@@ -965,9 +965,14 @@ fs_visitor::nir_emit_alu(nir_alu_instr *instr)
break;
case nir_op_bcsel:
- emit(CMP(reg_null_d, op[0], fs_reg(0), BRW_CONDITIONAL_NZ));
- emit_percomp(BRW_OPCODE_SEL, result, op[1], op[2],
- instr->dest.write_mask, false, BRW_PREDICATE_NORMAL);
+ for (unsigned i = 0; i < 4; i++) {
+ if (!((instr->dest.write_mask >> i) & 1))
+ continue;
+
+ emit(CMP(reg_null_d, offset(op[0], i), fs_reg(0), BRW_CONDITIONAL_NZ));
+ emit(SEL(offset(result, i), offset(op[1], i), offset(op[2], i)))
+ ->predicate = BRW_PREDICATE_NORMAL;
+ }
break;
default: