Commit e5385ea920e088c760f27b4c29a9b985c1fee62e
2020-01-27T13:40:18
Vulkan: Compile shaders at link time Since line raster emulation was changed to use specialization constants, it has been possible to compile shaders at link time. However, program pipeline objects would have required keeping the shader sources around for recompilation. Now that all necessary decorations are modified directly in SPIR-V, it's possible to compile the shaders at link time and forget about their sources. Program pipeline objects then simply "reconfigure" the generated SPIR-V. A next step could be to also create the Vulkan pipeline object at link time. A number of failures due to gaps in CTS testing prevent that work currently. In particular, in some situations the generated SPIR-V is not per spec, for example it may contain vertex attributes with aliasing locations, or have transform feedback capture of array elements misconfigured. Bug: angleproject:3394 Bug: angleproject:4253 Change-Id: I54c0884cf056b511a4a306225cc6ed2cef84d257 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2023186 Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org> Reviewed-by: Jamie Madill <jmadill@chromium.org>