[Mesa-dev] [PATCH v4 1/4] gallium: Add TGSI shader token for ARB_post_depth_coverage

[Lyude]

Signed-off-by: Lyude <lyude at redhat.com>

Changes since v2:
- Add missing string to tgsi_strings.c
Changes since v3:
- Reorder patch to be before we add the cap for this, since we can't have a cap
  for a TGSI property that doesn't exist yet
- Document the actual property seperately from the cap (whoops)

Signed-off-by: Lyude <lyude at redhat.com>
---
 src/gallium/auxiliary/tgsi/tgsi_strings.c  | 1 +
 src/gallium/docs/source/tgsi.rst           | 7 +++++++
 src/gallium/include/pipe/p_shader_tokens.h | 1 +
 3 files changed, 9 insertions(+)

diff --git a/src/gallium/auxiliary/tgsi/tgsi_strings.c b/src/gallium/auxiliary/tgsi/tgsi_strings.c
index 2640350..7ce12d3 100644
--- a/src/gallium/auxiliary/tgsi/tgsi_strings.c
+++ b/src/gallium/auxiliary/tgsi/tgsi_strings.c
@@ -151,6 +151,7 @@ const char *tgsi_property_names[TGSI_PROPERTY_COUNT] =
    "NUM_CLIPDIST_ENABLED",
    "NUM_CULLDIST_ENABLED",
    "FS_EARLY_DEPTH_STENCIL",
+   "FS_POST_DEPTH_COVERAGE",
    "NEXT_SHADER",
    "CS_FIXED_BLOCK_WIDTH",
    "CS_FIXED_BLOCK_HEIGHT",
diff --git a/src/gallium/docs/source/tgsi.rst b/src/gallium/docs/source/tgsi.rst
index e740476..5dcb6ba 100644
--- a/src/gallium/docs/source/tgsi.rst
+++ b/src/gallium/docs/source/tgsi.rst
@@ -3720,6 +3720,13 @@ DP3, DP4, DPH, DST, LOG, LRP, XPD, and possibly others. If there is a
 mismatch between shaders, then it is unspecified whether this behavior
 will be enabled.
 
+FS_POST_DEPTH_COVERAGE
+""""""""""""""""""""""
+
+When enabled, the input for TGSI_SEMANTIC_SAMPLEMASK will exclude samples
+that have failed the depth/stencil tests. As well, this implicitly enables
+FS_EARLY_DEPTH_STENCIL.
+
 
 Texture Sampling and Texture Formats
 ------------------------------------
diff --git a/src/gallium/include/pipe/p_shader_tokens.h b/src/gallium/include/pipe/p_shader_tokens.h
index cb49e3b..1e08d97 100644
--- a/src/gallium/include/pipe/p_shader_tokens.h
+++ b/src/gallium/include/pipe/p_shader_tokens.h
@@ -293,6 +293,7 @@ enum tgsi_property_name {
    TGSI_PROPERTY_NUM_CLIPDIST_ENABLED,
    TGSI_PROPERTY_NUM_CULLDIST_ENABLED,
    TGSI_PROPERTY_FS_EARLY_DEPTH_STENCIL,
+   TGSI_PROPERTY_FS_POST_DEPTH_COVERAGE,
    TGSI_PROPERTY_NEXT_SHADER,
    TGSI_PROPERTY_CS_FIXED_BLOCK_WIDTH,
    TGSI_PROPERTY_CS_FIXED_BLOCK_HEIGHT,
-- 
2.9.4