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7 Commits

Author SHA1 Message Date
Ryan Harrison 6839cba568 Add toggle to control if validity is expected in fuzzer 
This toggle controls if the fuzzer will throw a fatal error in the
case that the shader becomes invalid.

Currently the fuzzers do no guarantee that the options that are
provided are correct/valid, so there are many uninteresting cases that
become invalid due to the limited nature of the fuzzers, not due to
bugs in the code. The default off state of this toggle will suppress
this noise.

Once https://bugs.chromium.org/p/tint/issues/detail?id=1356 is
implemented this toggle can be default on.

BUG=tint:1357,chromium:1294533

Change-Id: I7170e5a30691105c97e20d8337aadf81ac2bc3bc
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/79840
Reviewed-by: Ben Clayton <bclayton@google.com>
Auto-Submit: Ryan Harrison <rharrison@chromium.org>
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: Ryan Harrison <rharrison@chromium.org>
 2022-02-09 19:45:17 +00:00
Ryan Harrison c57642cbd5 Refactor fuzzer transform generation 
Also splits out various utility classes from tint_common_fuzzer and
uses consistent naming for utility classes.

BUG=tint:1106

Change-Id: Ic343741eea799366850c46834865d50885554a84
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/65301
Auto-Submit: Ryan Harrison <rharrison@chromium.org>
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: Ryan Harrison <rharrison@chromium.org>
Reviewed-by: Antonio Maiorano <amaiorano@google.com>
 2021-09-30 18:58:32 +00:00
Ryan Harrison a617d0f0fc Convert fuzzer to generating configuration data 
This is instead of consuming a portion of the input, so that the seed
corpus of valid shaders can be more effective.

BUG=tint:1098

Change-Id: If3696527c82c23b09edeea6ddd2a0f935e5e1ac7
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/63301
Auto-Submit: Ryan Harrison <rharrison@chromium.org>
Commit-Queue: Ben Clayton <bclayton@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
 2021-09-22 14:37:46 +00:00
James Price 5910ec1e8a Output WGSL instead of SPIR-V in transform fuzzers 
Generating SPIR-V can cause validation failures when out-of-bounds
accesses are performed, since we are not running the robustness
transform.

Bug: chromium:1246061
Change-Id: Ied58d77d90079d10d5579d2d55854c3cfbc18db5
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/63640
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
Commit-Queue: James Price <jrprice@google.com>
 2021-09-08 18:08:36 +00:00
Antonio Maiorano 15e89fa7b7 Add '-tint_dump_input=true/false' to fuzzers to dump input spv/wgsl to a file 
When enabled, the input spv/wgsl is dumped to a file named
"fuzzer_input_<hash of file>.spv/wgsl".

Note that this adds the setting to all the fuzzers in the root of
fuzzers/, but not to tint_ast_fuzzer, tint_regex_fuzzer, nor
tint_spirv_tools_fuzzer as they currently to their own CLI parsing.

Change-Id: I268ffd842b94be1cbb78eb199d5662712ff71053
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/61000
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
Commit-Queue: Antonio Maiorano <amaiorano@google.com>
 2021-08-05 15:52:58 +00:00
Ryan Harrison a0174e613f Add fuzzing for transform::VertexPulling 
Includes a significant refactoring of helper functions in
tint_common_fuzzer.cc/.h

BUG=tint:722

Change-Id: I1fdab0113bae02c4a0bf8da0d1b7729f05a2fc5b
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/49902
Commit-Queue: Ryan Harrison <rharrison@chromium.org>
Auto-Submit: Ryan Harrison <rharrison@chromium.org>
Reviewed-by: Ben Clayton <bclayton@google.com>
 2021-05-06 15:43:33 +00:00
Ryan Harrison b5c908f700 Add fuzzing for transform::BindingRemapper 
BUG=tint:722

Change-Id: I742f1e536ef0429c2e7b8c9ea6c13b836a2ec0c2
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/49360
Auto-Submit: Ryan Harrison <rharrison@chromium.org>
Commit-Queue: Ben Clayton <bclayton@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
 2021-04-28 15:35:43 +00:00