gallium: Add TGSI shader token for ARB_post_depth_coverage

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Ilia Mirkin <imirkin@alum.mit.edu>

diff --git a/src/gallium/auxiliary/tgsi/tgsi_strings.c b/src/gallium/auxiliary/tgsi/tgsi_strings.c
index 2640350..7ce12d3 100644 (file)
--- 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..eceaa6d 100644 (file)
--- 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. This is only valid when
+FS_EARLY_DEPTH_STENCIL is also specified.
+
 
 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 (file)
--- 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,