tree 64f1c815d81851fd5226163dded521204e324167
parent 96c4019214e0b2d7c0843eacf96398a6a1198d1f
author Bryan Bernhart <bryan.bernhart@intel.com> 1587599850 +0000
committer Commit Bot service account <commit-bot@chromium.org> 1587599850 +0000

D3D12: Enable sub-allocation for RTV/DSV heaps.

Uses the staging descriptor allocator to enable
sub-allocation for RTV/DSVs.

This change also simplifies CPU descriptor heap
 management for render-passes:
- Allocating slot-by-slot removes extra attachment
 pass.
- No need for the slower direct allocation allocator.
- Move RP creation of view handles into RP builder.

BUG=dawn:155

Change-Id: I508492a2e56a897bf8c85f9a45cd13f62fa0a2ef
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/20042
Commit-Queue: Bryan Bernhart <bryan.bernhart@intel.com>
Reviewed-by: Austin Eng <enga@chromium.org>