The Vulkan spec states that "blendEnable [...] must be VK_FALSE if the attached image’s format features does not contain VK_FORMAT_FEATURE_COLOR_ATTACHMENT_BLEND_BIT" Previously we would silently ignore blending of integer formats. It was determined to be undefined behavior in https://gitlab.khronos.org/vulkan/vulkan/issues/2098 Bug: b/155147929 Change-Id: I01500d8c39d7f2c9a484944b4a93c6004e938c05 Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/45708 Presubmit-Ready: Nicolas Capens <nicolascapens@google.com> Kokoro-Result: kokoro <noreply+kokoro@google.com> Tested-by: Nicolas Capens <nicolascapens@google.com> Reviewed-by: Antonio Maiorano <amaiorano@google.com>
