[Mesa-dev] [Nouveau] [RFC PATCH 00/11] Implement ARB_cull_distance

[Ilia Mirkin]

I'm having a bit of trouble tracing through this. What happens if I
have a shader that just does:

gl_ClipDistance[0] = 1;
gl_CullDistance[0] = 1;

what does the resulting TGSI look like? (Assuming that clip plane 0 is
enabled.) What about the generated nvc0 code (for the vertex shader)?

On Sun, May 24, 2015 at 1:57 PM, Tobias Klausmann
<tobias.johannes.klausmann at mni.thm.de> wrote:
> This patch series adds the needed support for this extension to the various
> parts of mesa to finally enable it for nvc0.
>
> Dave Airlie (1):
>   glsl: lower cull_distance into cull_distance_mesa
>
> Tobias Klausmann (10):
>   glapi: add GL_ARB_cull_distance
>   mesa/main: add support for GL_ARB_cull_distance
>   mesa/prog: Add varyings for arb_cull_distance
>   mesa/st: add support for GL_ARB_cull_distance
>   glsl: Add a helper to see if an array was unsize in the shader
>   glsl: Add arb_cull_distance support
>   i965: rename UsesClipDistanceOut to UsesClipCullDistanceOut
>   gallium: add support for arb_cull_distance
>   nouveau/codegen: sort in galliums cull_distance semantic into the
>     drivers bitmask
>   nouveau/nvc0: implement cull_distance as a special form of clip
>     distance
>
>  docs/GL3.txt                                       |   2 +-
>  docs/relnotes/10.7.0.html                          |   4 +-
>  src/gallium/auxiliary/cso_cache/cso_context.c      |   3 +
>  src/gallium/drivers/freedreno/freedreno_screen.c   |   1 +
>  src/gallium/drivers/i915/i915_screen.c             |   1 +
>  src/gallium/drivers/ilo/ilo_screen.c               |   1 +
>  src/gallium/drivers/llvmpipe/lp_screen.c           |   2 +
>  .../drivers/nouveau/codegen/nv50_ir_from_tgsi.cpp  |   5 +
>  src/gallium/drivers/nouveau/nv30/nv30_screen.c     |   1 +
>  src/gallium/drivers/nouveau/nv50/nv50_screen.c     |   1 +
>  src/gallium/drivers/nouveau/nvc0/nvc0_program.c    |   6 +-
>  src/gallium/drivers/nouveau/nvc0/nvc0_program.h    |   1 +
>  src/gallium/drivers/nouveau/nvc0/nvc0_screen.c     |   1 +
>  .../drivers/nouveau/nvc0/nvc0_state_validate.c     |   1 +
>  src/gallium/drivers/r300/r300_screen.c             |   1 +
>  src/gallium/drivers/r600/r600_pipe.c               |   1 +
>  src/gallium/drivers/radeonsi/si_pipe.c             |   1 +
>  src/gallium/drivers/softpipe/sp_screen.c           |   2 +
>  src/gallium/drivers/svga/svga_screen.c             |   1 +
>  src/gallium/drivers/vc4/vc4_screen.c               |   1 +
>  src/gallium/include/pipe/p_defines.h               |   1 +
>  src/glsl/Makefile.sources                          |   1 +
>  src/glsl/ast_to_hir.cpp                            |  14 +
>  src/glsl/builtin_variables.cpp                     |  13 +-
>  src/glsl/glcpp/glcpp-parse.y                       |   3 +
>  src/glsl/glsl_parser_extras.cpp                    |   1 +
>  src/glsl/glsl_parser_extras.h                      |   3 +
>  src/glsl/glsl_types.cpp                            |   8 +-
>  src/glsl/glsl_types.h                              |  10 +-
>  src/glsl/ir_optimization.h                         |   1 +
>  src/glsl/link_varyings.cpp                         |  17 +-
>  src/glsl/link_varyings.h                           |   3 +-
>  src/glsl/linker.cpp                                | 124 +++--
>  src/glsl/lower_cull_distance.cpp                   | 549 +++++++++++++++++++++
>  src/glsl/standalone_scaffolding.cpp                |   1 +
>  src/glsl/tests/varyings_test.cpp                   |  27 +
>  src/mapi/glapi/gen/gl_API.xml                      |   7 +-
>  src/mesa/drivers/dri/i965/brw_fs_visitor.cpp       |   2 +-
>  src/mesa/drivers/dri/i965/brw_gs.c                 |   2 +-
>  src/mesa/drivers/dri/i965/brw_vec4.cpp             |   2 +-
>  src/mesa/drivers/dri/i965/brw_vec4_visitor.cpp     |   2 +-
>  src/mesa/drivers/dri/i965/brw_vs.c                 |   2 +-
>  src/mesa/main/extensions.c                         |   1 +
>  src/mesa/main/get.c                                |  26 +
>  src/mesa/main/get_hash_params.py                   |   4 +
>  src/mesa/main/mtypes.h                             |  22 +-
>  src/mesa/main/shaderapi.c                          |   4 +-
>  src/mesa/main/tests/enum_strings.cpp               |   2 +
>  src/mesa/program/prog_print.c                      |   4 +
>  src/mesa/state_tracker/st_extensions.c             |   4 +
>  src/mesa/state_tracker/st_program.c                |  34 ++
>  51 files changed, 859 insertions(+), 72 deletions(-)
>  create mode 100644 src/glsl/lower_cull_distance.cpp
>
> --
> 2.4.1
>
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