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samples/main: Print the WGSL on error 

A diagnostic is not very helpful without the surrounding code.
This is especially useful when debugging issues with the SPIR-V reader and post-transform.

Change-Id: Idfeeaebf0cf0be98093838f8c8ad8bca4866b5b0
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/51922
Commit-Queue: Ben Clayton <bclayton@chromium.org>
Reviewed-by: Antonio Maiorano <amaiorano@google.com>
This commit is contained in:
Ben Clayton 2021-05-21 20:49:33 +00:00 committed by Tint LUCI CQ
parent 8fb6402c98
commit 7b0c5e880e
1 changed files with 14 additions and 0 deletions
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14
samples/main.cc
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@ -552,6 +552,18 @@ std::string Disassemble(const std::vector<uint32_t>& data) {
} }
#endif // TINT_BUILD_SPV_WRITER #endif // TINT_BUILD_SPV_WRITER
/// PrintWGSL writes the WGSL of the program to the provided ostream, if the
/// WGSL writer is enabled, otherwise it does nothing.
/// @param out the output stream to write the WGSL to
/// @param program the program
void PrintWGSL(std::ostream& out, const tint::Program& program) {
#if TINT_BUILD_WGSL_WRITER
tint::writer::wgsl::Generator writer(&program);
writer.Generate();
out << std::endl << writer.result() << std::endl;
#endif
}
} // namespace } // namespace
int main(int argc, const char** argv) { int main(int argc, const char** argv) {
@ -717,6 +729,7 @@ int main(int argc, const char** argv) {
auto out = transform_manager.Run(program.get(), std::move(transform_inputs)); auto out = transform_manager.Run(program.get(), std::move(transform_inputs));
if (!out.program.IsValid()) { if (!out.program.IsValid()) {
PrintWGSL(std::cerr, out.program);
diag_formatter.format(out.program.Diagnostics(), diag_printer.get()); diag_formatter.format(out.program.Diagnostics(), diag_printer.get());
return 1; return 1;
} }
@ -789,6 +802,7 @@ int main(int argc, const char** argv) {
} }
if (!writer->Generate()) { if (!writer->Generate()) {
PrintWGSL(std::cerr, out.program);
std::cerr << "Failed to generate: " << writer->error() << std::endl; std::cerr << "Failed to generate: " << writer->error() << std::endl;
return 1; return 1;
} }