Mesa (master): zink: support stencil-export

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Module: Mesa
Branch: master
Commit: 05a5af02bccfeb293b651e711e236f3db302a596
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=05a5af02bccfeb293b651e711e236f3db302a596

Author: Antonio Caggiano <antonio.caggiano at collabora.com>
Date:   Tue Jul 21 16:07:17 2020 +0200

zink: support stencil-export

Enable pipe capability of exporting stencil from shader when Vulkan
extension is available.

Signed-off-by: Antonio Caggiano <antonio.caggiano at collabora.com>
Reviewed-by: Erik Faye-Lund <erik.faye-lund at collabora.com>

Reviewed-By: Mike Blumenkrantz <michael.blumenkrantz at gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/9244>

---

 docs/features.txt                      | 2 +-
 src/gallium/drivers/zink/zink_screen.c | 3 +++
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/docs/features.txt b/docs/features.txt
index 477256ce610..2d1047625d7 100644
--- a/docs/features.txt
+++ b/docs/features.txt
@@ -310,7 +310,7 @@ Khronos, ARB, and OES extensions that are not part of any OpenGL or OpenGL ES ve
   GL_ARB_seamless_cubemap_per_texture                   DONE (etnaviv/SEAMLESS_CUBE_MAP, freedreno, i965, nvc0, r600, radeonsi, softpipe, swr, virgl)
   GL_ARB_shader_ballot                                  DONE (i965/gen8+, nvc0, radeonsi)
   GL_ARB_shader_clock                                   DONE (i965/gen7+, nv50, nvc0, r600, radeonsi, virgl)
-  GL_ARB_shader_stencil_export                          DONE (i965/gen9+, r600, radeonsi, softpipe, llvmpipe, swr, virgl, panfrost)
+  GL_ARB_shader_stencil_export                          DONE (i965/gen9+, r600, radeonsi, softpipe, llvmpipe, swr, virgl, panfrost, zink)
   GL_ARB_shader_viewport_layer_array                    DONE (i965/gen6+, nvc0, radeonsi)
   GL_ARB_shading_language_include                       DONE
   GL_ARB_sparse_buffer                                  DONE (radeonsi/CIK+)
diff --git a/src/gallium/drivers/zink/zink_screen.c b/src/gallium/drivers/zink/zink_screen.c
index b0f3556560e..ea916e3685c 100644
--- a/src/gallium/drivers/zink/zink_screen.c
+++ b/src/gallium/drivers/zink/zink_screen.c
@@ -302,6 +302,9 @@ zink_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
    case PIPE_CAP_DEPTH_CLIP_DISABLE:
       return screen->info.feats.features.depthClamp;
 
+   case PIPE_CAP_SHADER_STENCIL_EXPORT:
+      return screen->info.have_EXT_shader_stencil_export;
+
    case PIPE_CAP_TGSI_INSTANCEID:
    case PIPE_CAP_MIXED_COLORBUFFER_FORMATS:
    case PIPE_CAP_SEAMLESS_CUBE_MAP: