dawn-cmake/test/array/assign_to_storage_var.wgsl.expected.hlsl
Antonio Maiorano 11d09f2fe7 HLSL: force FXC to never unroll loops
Emit the "[loop]" attribute on "for" and "while" so that FXC does not
attempt to unroll them. This is to work around an FXC bug where it fails
to unroll loops with gradient operations.

FXC ostensibly unrolls such loops because gradient operations require
uniform control flow, and loops that have varying iterations may
possibly not be uniform. Tint will eventually validate that control flow
is indeed uniform, so forcing FXC to avoid unrolling in these cases
should be fine.

Bug: tint:1112
Change-Id: I10077f8b62fbbb230a0003f3864c75a8fe0e1d18
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/69880
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
Commit-Queue: Antonio Maiorano <amaiorano@google.com>
2021-11-18 13:50:12 +00:00

109 lines
3.5 KiB
HLSL

[numthreads(1, 1, 1)]
void unused_entry_point() {
return;
}
struct tint_padded_array_element {
int el;
};
struct S {
tint_padded_array_element arr[4];
};
static tint_padded_array_element src_private[4] = (tint_padded_array_element[4])0;
groupshared tint_padded_array_element src_workgroup[4];
cbuffer cbuffer_src_uniform : register(b0, space0) {
uint4 src_uniform[4];
};
RWByteAddressBuffer src_storage : register(u1, space0);
RWByteAddressBuffer tint_symbol : register(u2, space0);
RWByteAddressBuffer dst_nested : register(u3, space0);
typedef tint_padded_array_element ret_arr_ret[4];
ret_arr_ret ret_arr() {
const tint_padded_array_element tint_symbol_11[4] = (tint_padded_array_element[4])0;
return tint_symbol_11;
}
S ret_struct_arr() {
const S tint_symbol_12 = (S)0;
return tint_symbol_12;
}
void tint_symbol_1(RWByteAddressBuffer buffer, uint offset, tint_padded_array_element value[4]) {
tint_padded_array_element array[4] = value;
{
[loop] for(uint i = 0u; (i < 4u); i = (i + 1u)) {
buffer.Store((offset + (i * 16u)), asuint(array[i].el));
}
}
}
typedef tint_padded_array_element tint_symbol_3_ret[4];
tint_symbol_3_ret tint_symbol_3(uint4 buffer[4], uint offset) {
tint_padded_array_element arr_1[4] = (tint_padded_array_element[4])0;
{
[loop] for(uint i_1 = 0u; (i_1 < 4u); i_1 = (i_1 + 1u)) {
const uint scalar_offset = ((offset + (i_1 * 16u))) / 4;
arr_1[i_1].el = asint(buffer[scalar_offset / 4][scalar_offset % 4]);
}
}
return arr_1;
}
typedef tint_padded_array_element tint_symbol_5_ret[4];
tint_symbol_5_ret tint_symbol_5(RWByteAddressBuffer buffer, uint offset) {
tint_padded_array_element arr_2[4] = (tint_padded_array_element[4])0;
{
[loop] for(uint i_2 = 0u; (i_2 < 4u); i_2 = (i_2 + 1u)) {
arr_2[i_2].el = asint(buffer.Load((offset + (i_2 * 16u))));
}
}
return arr_2;
}
void tint_symbol_9(RWByteAddressBuffer buffer, uint offset, int value[2]) {
int array_3[2] = value;
{
[loop] for(uint i_3 = 0u; (i_3 < 2u); i_3 = (i_3 + 1u)) {
buffer.Store((offset + (i_3 * 4u)), asuint(array_3[i_3]));
}
}
}
void tint_symbol_8(RWByteAddressBuffer buffer, uint offset, int value[3][2]) {
int array_2[3][2] = value;
{
[loop] for(uint i_4 = 0u; (i_4 < 3u); i_4 = (i_4 + 1u)) {
tint_symbol_9(buffer, (offset + (i_4 * 8u)), array_2[i_4]);
}
}
}
void tint_symbol_7(RWByteAddressBuffer buffer, uint offset, int value[4][3][2]) {
int array_1[4][3][2] = value;
{
[loop] for(uint i_5 = 0u; (i_5 < 4u); i_5 = (i_5 + 1u)) {
tint_symbol_8(buffer, (offset + (i_5 * 24u)), array_1[i_5]);
}
}
}
void foo(tint_padded_array_element src_param[4]) {
tint_padded_array_element src_function[4] = (tint_padded_array_element[4])0;
const tint_padded_array_element tint_symbol_13[4] = {{1}, {2}, {3}, {3}};
tint_symbol_1(tint_symbol, 0u, tint_symbol_13);
tint_symbol_1(tint_symbol, 0u, src_param);
tint_symbol_1(tint_symbol, 0u, ret_arr());
const tint_padded_array_element src_let[4] = (tint_padded_array_element[4])0;
tint_symbol_1(tint_symbol, 0u, src_let);
tint_symbol_1(tint_symbol, 0u, src_function);
tint_symbol_1(tint_symbol, 0u, src_private);
tint_symbol_1(tint_symbol, 0u, src_workgroup);
tint_symbol_1(tint_symbol, 0u, ret_struct_arr().arr);
tint_symbol_1(tint_symbol, 0u, tint_symbol_3(src_uniform, 0u));
tint_symbol_1(tint_symbol, 0u, tint_symbol_5(src_storage, 0u));
int src_nested[4][3][2] = (int[4][3][2])0;
tint_symbol_7(dst_nested, 0u, src_nested);
}