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llvmpipe: Use derivative intrinsics

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Acked-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/30584>
This commit is contained in:
Konstantin Seurer 2024-08-09 10:20:26 +02:00 • committed by Marge Bot
parent e497f81603
commit a77f1d04d2
2 changed files with 22 additions and 10 deletions
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30
src/gallium/auxiliary/gallivm/lp_bld_nir.c
View file

@ -677,16 +677,6 @@ do_alu_action(struct lp_build_nir_context *bld_base,
case nir_op_fcos:
result = lp_build_cos(get_flt_bld(bld_base, src_bit_size[0]), src[0]);
break;
case nir_op_fddx:
case nir_op_fddx_coarse:
case nir_op_fddx_fine:
result = lp_build_ddx(get_flt_bld(bld_base, src_bit_size[0]), src[0]);
break;
case nir_op_fddy:
case nir_op_fddy_coarse:
case nir_op_fddy_fine:
result = lp_build_ddy(get_flt_bld(bld_base, src_bit_size[0]), src[0]);
break;
case nir_op_fdiv:
result = lp_build_div(get_flt_bld(bld_base, src_bit_size[0]),
src[0], src[1]);
@ -2315,6 +2305,26 @@ visit_intrinsic(struct lp_build_nir_context *bld_base,
case nir_intrinsic_load_param:
visit_load_param(bld_base, instr, result);
break;
case nir_intrinsic_ddx:
case nir_intrinsic_ddy:
case nir_intrinsic_ddx_coarse:
case nir_intrinsic_ddy_coarse:
case nir_intrinsic_ddx_fine:
case nir_intrinsic_ddy_fine: {
LLVMValueRef src = get_src(bld_base, instr->src[0]);
src = cast_type(bld_base, src, nir_type_float, nir_src_bit_size(instr->src[0]));
struct lp_build_context *bld = get_flt_bld(bld_base, nir_src_bit_size(instr->src[0]));
if (instr->intrinsic == nir_intrinsic_ddx ||
instr->intrinsic == nir_intrinsic_ddx_coarse ||
instr->intrinsic == nir_intrinsic_ddx_fine)
result[0] = lp_build_ddx(bld, src);
else
result[0] = lp_build_ddy(bld, src);
break;
}
default:
fprintf(stderr, "Unsupported intrinsic: ");
nir_print_instr(&instr->instr, stderr);

2
src/gallium/drivers/llvmpipe/lp_screen.c
View file

@ -663,6 +663,8 @@ static const struct nir_shader_compiler_options gallivm_nir_options = {
.lower_fisnormal = true,
.lower_fquantize2f16 = true,
.driver_functions = true,
.has_ddx_intrinsics = true,
.scalarize_ddx = true,
};