Commit eeb1430876ca417216a800b842681c64fa8f91cf
2020-12-23T01:45:35
Vulkan: Support xfb capture of I/O block fields In the emulation path, it's ensured that the generated code references the I/O block field correctly (using the instance name if provided, and without it otherwise). In the extension path, the info map is augmented with an array of xfb decorations for its fields. Then when `OpDecorate %IOBlockId Block` is encountered, the transform feedback decorations on the fields are inserted: OpMemberDecorate %IOBlockId MemberN XfbBuffer buffer OpMemberDecorate %IOBlockId MemberN XfbStride stride OpMemberDecorate %IOBlockId MemberN Offset offset Future work includes removing the duplicate varying added for gl_PointSize and use this mechanism to decorate gl_PerVertex directly. Bug: angleproject:3606 Change-Id: I6fed0b1ee7245fe695337043b40b281fb01a1fb0 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2599953 Reviewed-by: Jamie Madill <jmadill@chromium.org> Reviewed-by: Tim Van Patten <timvp@google.com> Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>