tree d1c673c0b866fcea3c79a81bf644ca479048bcd0
parent 802292eb5249f83f1e8f990f0283b63f4f267c8a
author Antonio Maiorano <amaiorano@google.com> 1637846690 +0000
committer Dawn LUCI CQ <dawn-scoped@luci-project-accounts.iam.gserviceaccount.com> 1637846690 +0000

Add "fxc_optimizations" toggle set to false by default

FXC sometimes miscompiles code when optimizing (/O2), and there is no
discernable workaround. This change sets the optimization level to /O0
when compiling shaders with FXC.

Also, no longer default to enabling EmitHLSLDebugSymbols in Debug
builds, which disabled optimizations (/Od). This confused me a few
times, and is not necessary since we can set this toggle via command
line.

Bug: dawn:1203
Bug: tint:1175
Bug: tint:1112
Change-Id: Ide9e6ecd45adeca951b8836dee91a8367eca3769
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/70700
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Reviewed-by: Ben Clayton <bclayton@google.com>
Commit-Queue: Antonio Maiorano <amaiorano@google.com>