Use DOT2ADDv instruction with 0.0f constant add.
Signed-off-by: Wladimir J. van der Laan <laa...@gmail.com>
Reviewed-by: Ilia Mirkin <imir...@alum.mit.edu>
---
src/gallium/drivers/freedreno/a2xx/fd2_compiler.c | 21 +++++++++++++++++++++
1 file changed, 21 insertions(+)
Change since v2: spaces->tabs
diff --git a/src/gallium/drivers/freedreno/a2xx/fd2_compiler.c
b/src/gallium/drivers/freedreno/a2xx/fd2_compiler.c
index 84855a4..3ad47f9 100644
--- a/src/gallium/drivers/freedreno/a2xx/fd2_compiler.c
+++ b/src/gallium/drivers/freedreno/a2xx/fd2_compiler.c
@@ -987,6 +987,24 @@ translate_trig(struct fd2_compile_context *ctx,
add_src_reg(ctx, instr, &tmp_src);
}
+static void
+translate_dp2(struct fd2_compile_context *ctx,
+ struct tgsi_full_instruction *inst,
+ unsigned opc)
+{
+ struct tgsi_src_register tmp_const;
+ struct ir2_instruction *instr;
+ /* DP2ADD c,a,b -> dot2(a,b) + c */
+ /* for c we use the constant 0.0 */
+ instr = ir2_instr_create_alu(next_exec_cf(ctx), DOT2ADDv, ~0);
+ get_immediate(ctx, &tmp_const, fui(0.0f));
+ add_dst_reg(ctx, instr, &inst->Dst[0].Register);
+ add_src_reg(ctx, instr, &tmp_const);
+ add_src_reg(ctx, instr, &inst->Src[0].Register);
+ add_src_reg(ctx, instr, &inst->Src[1].Register);
+ add_vector_clamp(inst, instr);
+}
+
/*
* Main part of compiler/translator:
*/
@@ -1054,6 +1072,9 @@ translate_instruction(struct fd2_compile_context *ctx,
instr = ir2_instr_create_alu(cf, ADDv, ~0);
add_regs_vector_2(ctx, inst, instr);
break;
+ case TGSI_OPCODE_DP2:
+ translate_dp2(ctx, inst, opc);
+ break;
case TGSI_OPCODE_DP3:
instr = ir2_instr_create_alu(cf, DOT3v, ~0);
add_regs_vector_2(ctx, inst, instr);
--
2.7.4
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