Commit 44063c804e4fa4696c124c2ac0fcb687e87e4859
2019-06-04T15:20:30
Vulkan: Store array buffer conversions in BufferVk. The intent of this CL is to call convertVertexBuffer*PU only when we have new data to convert. If the app unbinds and rebinds a vertex buffer without changing the data we can now retrieve the cached vertex buffer info from the BufferVk class. Previously we would always reconvert the data on a rebind. This was slowing down applications and benchmarks. To achieve this we add a conversion cache to BufferVk. Each cache entry stores a key based on the vertex info. Also we store a ring buffer for each cache entry and a flag to indicate if the entry is dirty. The cache is dirtied on a bufffer data update or a map call. Improves performance in the T-Rex benchmark. Bug: angleproject:3495 Change-Id: Ia999c9187510748ba95bc98362eb332e1990d270 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1638903 Commit-Queue: Jamie Madill <jmadill@chromium.org> Reviewed-by: Courtney Goeltzenleuchter <courtneygo@google.com>