[Mesa-dev] [PATCH 0/6] Add ARB_shader_stencil_export for SKL+

[Ben Widawsky]

This patch series implements ARB_shader_stencil_export. The fragment shader is
able to natively understand the W-tile format of stencil, and write results to
the stencil buffer. The patch series has no piglit regressions, and it is
passing both my new test (mentioned below) as well as the original test
`fbo-depth-array fs-writes-stencil`.

There are still 2 things ongoing here, but I don't think either prevent merging
at least the first 5 patches. I am still working on improving the basic test I
created: http://lists.freedesktop.org/archives/piglit/2015-October/017584.html

I am also still working on implementing meta blits for stencil using this
extension. I think the patches for that are mostly done, but they need more
testing. I'll be posting those separately.

Ben Widawsky (6):
  i965: Correct the comment about fb write payload
  i965/fs: Enumerate logical fb writes arguments
  i965: (trivial) rename computes stencil to gen9
  i965: Implement ARB_shader_stencil_export (SKL+)
  Implement the proper packing for the stencil payload
  i965: Advertise ARB_shader_stencil_export (gen9+)

 docs/relnotes/11.1.0.html                      |  1 +
 src/mesa/drivers/dri/i965/brw_compiler.h       |  1 +
 src/mesa/drivers/dri/i965/brw_defines.h        | 22 ++++++-----
 src/mesa/drivers/dri/i965/brw_fs.cpp           | 39 ++++++++++++++-----
 src/mesa/drivers/dri/i965/brw_fs.h             |  4 ++
 src/mesa/drivers/dri/i965/brw_fs_generator.cpp | 52 ++++++++++++++++++++++++++
 src/mesa/drivers/dri/i965/brw_fs_nir.cpp       |  2 +
 src/mesa/drivers/dri/i965/brw_fs_visitor.cpp   | 24 ++++++++++--
 src/mesa/drivers/dri/i965/brw_shader.cpp       |  2 +
 src/mesa/drivers/dri/i965/gen8_ps_state.c      |  5 +++
 src/mesa/drivers/dri/i965/intel_extensions.c   |  1 +
 11 files changed, 131 insertions(+), 22 deletions(-)

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2.6.1