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vkd3d-shader/tpf: Implmenent HLSL_OP1_RCP.

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SM5 comes with a RCP opcode; for SM4, implement it as `DIV dst, 1, x`.
This commit is contained in:
Petrichor Park
2024-04-22 12:24:16 -05:00
committed by Henri Verbeet
parent b3f0cd5788
commit bec4f413dc
Notes: Henri Verbeet 2024-07-11 17:16:15 +02:00 
Approved-by: Elizabeth Figura (@zfigura)
Approved-by: Giovanni Mascellani (@giomasce)
Approved-by: Henri Verbeet (@hverbeet)
Merge-Request: https://gitlab.winehq.org/wine/vkd3d/-/merge_requests/822
2 changed files with 51 additions and 13 deletions
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38
libs/vkd3d-shader/tpf.c
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@@ -5189,6 +5189,44 @@ static void write_sm4_expr(const struct tpf_writer *tpf, const struct hlsl_ir_ex
}
break;
case HLSL_OP1_RCP:
switch (dst_type->e.numeric.type)
{
case HLSL_TYPE_FLOAT:
/* SM5 comes with a RCP opcode */
if (tpf->ctx->profile->major_version >= 5)
{
write_sm4_unary_op(tpf, VKD3D_SM5_OP_RCP, &expr->node, arg1, 0);
}
else
{
/* For SM4, implement as DIV dst, 1.0, src */
struct sm4_instruction instr;
struct hlsl_constant_value one;
assert(type_is_float(dst_type));
memset(&instr, 0, sizeof(instr));
instr.opcode = VKD3D_SM4_OP_DIV;
sm4_dst_from_node(&instr.dsts[0], &expr->node);
instr.dst_count = 1;
for (unsigned int i = 0; i < 4; i++)
one.u[i].f = 1.0f;
sm4_src_from_constant_value(&instr.srcs[0], &one, dst_type->dimx, instr.dsts[0].write_mask);
sm4_src_from_node(tpf, &instr.srcs[1], arg1, instr.dsts[0].write_mask);
instr.src_count = 2;
write_sm4_instruction(tpf, &instr);
}
break;
default:
hlsl_fixme(tpf->ctx, &expr->node.loc, "SM4 %s rcp expression.", dst_type_string->buffer);
}
break;
case HLSL_OP1_REINTERPRET:
write_sm4_unary_op(tpf, VKD3D_SM4_OP_MOV, &expr->node, arg1, 0);
break;