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HLSL: work around FXC failures when dynamically indexing arrays in structs

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FXC fails to compile code that assigns to dynamically-indexed fixed-size
arrays in structs on internal shader variables with:

error X3500: array reference cannot be used as an l-value; not natively
addressable

This CL detects this case, and transforms such assignments into copying
out the array to a local variable, assigning to that local, and then
copying the array back.

Also manually regenerate SKIPs for HLSL/FXC after this change, which
fixes 30 tests. Also exposes some "compilation aborted unexpectedly" now
that  "array reference cannot be used as an l-value" has been fixed. For
tests that fail for both DXC and FXC, updating SKIPs to the DXC one to
help distinguish actual FXC bugs from valid errors.

Bug: tint:998
Bug: tint:1206
Change-Id: I09204d8d81ab27d1c257538ad702414ccc386543
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/71620
Reviewed-by: Ben Clayton <bclayton@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: Antonio Maiorano <amaiorano@google.com>
This commit is contained in:
Antonio Maiorano
2021-12-13 15:55:11 +00:00
committed by Tint LUCI CQ
parent 5923803f7e
commit d733fdb85c
98 changed files with 2149 additions and 6619 deletions
Download Patch File Download Diff File Expand all files Collapse all files

21
test/bug/fxc/dyn_array_idx/write/function.wgsl.expected.hlsl
View File

@@ -1,21 +0,0 @@
SKIP: FAILED
cbuffer cbuffer_ubo : register(b0, space0) {
uint4 ubo[1];
};
struct S {
int data[64];
};
RWByteAddressBuffer result : register(u1, space0);
[numthreads(1, 1, 1)]
void f() {
S s = (S)0;
s.data[asint(ubo[0].x)] = 1;
result.Store(0u, asuint(s.data[3]));
return;
}
C:\src\tint\test\Shader@0x000002C587F87250(14,3-25): error X3500: array reference cannot be used as an l-value; not natively addressable

25
test/bug/fxc/dyn_array_idx/write/function_via_param.wgsl.expected.hlsl
View File

@@ -1,25 +0,0 @@
SKIP: FAILED
cbuffer cbuffer_ubo : register(b0, space0) {
uint4 ubo[1];
};
struct S {
int data[64];
};
RWByteAddressBuffer result : register(u1, space0);
void x(inout S p) {
p.data[asint(ubo[0].x)] = 1;
}
[numthreads(1, 1, 1)]
void f() {
S s = (S)0;
x(s);
result.Store(0u, asuint(s.data[3]));
return;
}
C:\src\tint\test\Shader@0x000002338E919910(12,3-25): error X3500: array reference cannot be used as an l-value; not natively addressable

21
test/bug/fxc/dyn_array_idx/write/private.wgsl.expected.hlsl
View File

@@ -1,21 +0,0 @@
SKIP: FAILED
cbuffer cbuffer_ubo : register(b0, space0) {
uint4 ubo[1];
};
struct S {
int data[64];
};
RWByteAddressBuffer result : register(u1, space0);
static S s = (S)0;
[numthreads(1, 1, 1)]
void f() {
s.data[asint(ubo[0].x)] = 1;
result.Store(0u, asuint(s.data[3]));
return;
}
C:\src\tint\test\Shader@0x000001D94063C630(14,3-25): error X3500: array reference cannot be used as an l-value; not natively addressable

25
test/bug/fxc/dyn_array_idx/write/private_via_param.wgsl.expected.hlsl
View File

@@ -1,25 +0,0 @@
SKIP: FAILED
cbuffer cbuffer_ubo : register(b0, space0) {
uint4 ubo[1];
};
struct S {
int data[64];
};
RWByteAddressBuffer result : register(u1, space0);
static S s = (S)0;
void x(inout S p) {
p.data[asint(ubo[0].x)] = 1;
}
[numthreads(1, 1, 1)]
void f() {
x(s);
result.Store(0u, asuint(s.data[3]));
return;
}
C:\src\tint\test\Shader@0x0000018B80081AA0(13,3-25): error X3500: array reference cannot be used as an l-value; not natively addressable