[Mesa-dev] [PATCH 0/4] Add nir_lower_viewport_transform

[Qiang Yu]

This is needed by Mali Utgard/Midgard GPU which don't have viewport
transform HW, and Lima/Panfrost driver can share same implementation
in a common place.

I send out this patch series seperatly because Lima is under review in
https://gitlab.freedesktop.org/mesa/mesa/merge_requests/465
and Panfrost driver need additinal changes in special uniform handling
which I'm not familiar with.

I expect Panfrost guys will send out patch to use this and Lima will be
another user of it when upstreamed.

Qiang Yu (4):
  mesa: seperate scale and translate in viewport calculation
  mesa: add STATE_VIEWPORT_SCALE/TRANSLATE
  nir: add nir_lower_viewport_transform
  mesa/st: do nir_lower_viewport_transform

 src/compiler/Makefile.sources                 |   1 +
 src/compiler/nir/meson.build                  |   1 +
 src/compiler/nir/nir.h                        |   8 +
 .../nir/nir_lower_viewport_transform.c        | 142 ++++++++++++++++++
 src/gallium/auxiliary/util/u_screen.c         |   3 +
 src/gallium/include/pipe/p_defines.h          |   1 +
 src/mesa/main/viewport.c                      |  26 ++--
 src/mesa/program/prog_statevars.c             |  35 +++++
 src/mesa/program/prog_statevars.h             |   2 +
 src/mesa/state_tracker/st_glsl_to_nir.cpp     |  23 +++
 src/mesa/state_tracker/st_nir.h               |   4 +
 src/mesa/state_tracker/st_program.c           |   1 +
 12 files changed, 233 insertions(+), 14 deletions(-)
 create mode 100644 src/compiler/nir/nir_lower_viewport_transform.c

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2.17.1