tree 07ede8f30b5b79f97d2b1d2cd6f96e9c2e94bcd8
parent c3dd927e51b730b0ada151218d199c332317ca33
author Nicolas Capens <capn@google.com> 1621493550 -0400
committer swiftshader-scoped@luci-project-accounts.iam.gserviceaccount.com <swiftshader-scoped@luci-project-accounts.iam.gserviceaccount.com> 1628180129 +0000

Implement VK_EXT_custom_border_color

This implementation uses the custom border color as "baked" state,
instead of data stored in the descriptor. This is justified by the
assumption that only few custom border colors will be used in practice.
maxSamplerAllocationCount and maxCustomBorderColorSamplers are both
set to 4000, like many other implementations currently:
https://vulkan.gpuinfo.org/displayextensionproperty.php?name=maxCustomBorderColorSamplers

Note that infinity is deemed a valid border component value, and Reactor
intentionally asserts when trying to initialize a Float constant with
infinity, so we bit-cast to int in C++.

Bug: b/151215666
Bug: angleproject:6200
Tests: dEQP-VK.*clamp_to_border_custom*
Change-Id: I22608a80f50194bbac66cf515b0a9249b67b5f00
Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/54469
Presubmit-Ready: Nicolas Capens <nicolascapens@google.com>
Kokoro-Result: kokoro <noreply+kokoro@google.com>
Tested-by: Nicolas Capens <nicolascapens@google.com>
Reviewed-by: Sean Risser <srisser@google.com>
Commit-Queue: Nicolas Capens <nicolascapens@google.com>