Vulkan: Defer color image layout changes at endRenderPass time Right now color render target's image's layout change are done at beginRenderPass time. The problem is that the layout also depends on whether texture is also being used as a sampler or not. That information is not known when renderpass starts. We did some special treatment for depth stencil attachment so that its layout determination is deferred until endRenderPass time. This CL expands that same mechanism to color attachment as well. Right now the color attachment will still pick the same ImageLayout::ColorAttachment layout since the logic to detect it is also used for texture sampling is not there yet. Bug: b/175584609 Change-Id: Id7486174d475f894461578b31d0d40fdd90e808a Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2744121 Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org> Reviewed-by: Tim Van Patten <timvp@google.com> Reviewed-by: Jamie Madill <jmadill@chromium.org> Commit-Queue: Charlie Lao <cclao@google.com>