[Mesa-dev] [PATCH 9/9] nvc0: Enable ARB_shader_ballot on Kepler+

[Samuel Pitoiset]

I would just suggest to only enable the feature on GK110 for now. Except 
if someone else can test on GK104 and GM107+.

On 04/08/2017 11:51 AM, Boyan Ding wrote:
> readInvocationARB() and readFirstInvocationARB() need SHFL.IDX
> instruction which is introduced in Kepler.
> ---
>   docs/features.txt                              | 2 +-
>   docs/relnotes/17.1.0.html                      | 2 +-
>   src/gallium/drivers/nouveau/nvc0/nvc0_screen.c | 3 ++-
>   3 files changed, 4 insertions(+), 3 deletions(-)
> 
> diff --git a/docs/features.txt b/docs/features.txt
> index 5cc109036b..505eee4516 100644
> --- a/docs/features.txt
> +++ b/docs/features.txt
> @@ -292,7 +292,7 @@ Khronos, ARB, and OES extensions that are not part of any OpenGL or OpenGL ES ve
>     GL_ARB_sample_locations                               not started
>     GL_ARB_seamless_cubemap_per_texture                   DONE (i965, nvc0, radeonsi, r600, softpipe, swr)
>     GL_ARB_shader_atomic_counter_ops                      DONE (i965/gen7+, nvc0, radeonsi, softpipe)
> -  GL_ARB_shader_ballot                                  DONE (radeonsi)
> +  GL_ARB_shader_ballot                                  DONE (nvc0, radeonsi)
>     GL_ARB_shader_clock                                   DONE (i965/gen7+, radeonsi)
>     GL_ARB_shader_draw_parameters                         DONE (i965, nvc0, radeonsi)
>     GL_ARB_shader_group_vote                              DONE (nvc0, radeonsi)
> diff --git a/docs/relnotes/17.1.0.html b/docs/relnotes/17.1.0.html
> index 7419970283..10c60a066c 100644
> --- a/docs/relnotes/17.1.0.html
> +++ b/docs/relnotes/17.1.0.html
> @@ -45,7 +45,7 @@ Note: some of the new features are only available with certain drivers.
>   
>   <ul>
>   <li>GL_ARB_gpu_shader_int64 on i965/gen8+, nvc0, radeonsi, softpipe, llvmpipe</li>
> -<li>GL_ARB_shader_ballot on radeonsi</li>
> +<li>GL_ARB_shader_ballot on nvc0, radeonsi</li>
>   <li>GL_ARB_shader_clock on radeonsi</li>
>   <li>GL_ARB_shader_group_vote on radeonsi</li>
>   <li>GL_ARB_sparse_buffer on radeonsi/CIK+</li>
> diff --git a/src/gallium/drivers/nouveau/nvc0/nvc0_screen.c b/src/gallium/drivers/nouveau/nvc0/nvc0_screen.c
> index 064848db4a..6a027e9a51 100644
> --- a/src/gallium/drivers/nouveau/nvc0/nvc0_screen.c
> +++ b/src/gallium/drivers/nouveau/nvc0/nvc0_screen.c
> @@ -258,6 +258,8 @@ nvc0_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
>         return class_3d >= NVE4_3D_CLASS; /* needs testing on fermi */
>      case PIPE_CAP_POLYGON_MODE_FILL_RECTANGLE:
>         return class_3d >= GM200_3D_CLASS;
> +   case PIPE_CAP_TGSI_BALLOT:
> +      return class_3d >= NVE4_3D_CLASS;
>   
>      /* unsupported caps */
>      case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
> @@ -289,7 +291,6 @@ nvc0_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
>      case PIPE_CAP_INT64_DIVMOD:
>      case PIPE_CAP_TGSI_CLOCK:
>      case PIPE_CAP_SPARSE_BUFFER_PAGE_SIZE:
> -   case PIPE_CAP_TGSI_BALLOT:
>         return 0;
>   
>      case PIPE_CAP_VENDOR_ID:
>