gallium: add TGSI_SEMANTIC_DEFAULT_OUTER/INNER_LEVEL

[mesa.git] / src / gallium / docs / source / tgsi.rst

diff --git a/src/gallium/docs/source/tgsi.rst b/src/gallium/docs/source/tgsi.rst
index 277f25ca41b76fc752dc8e8e02e07788bb25da23..287f4b7272977625e8905876c42403ff851c21b2 100644 (file)
--- a/src/gallium/docs/source/tgsi.rst
+++ b/src/gallium/docs/source/tgsi.rst
@@ -2834,6 +2834,36 @@ These atomic operations may only be used with 32-bit integer image formats.
   resource[offset] = (dst_x > src_x ? dst_x : src_x)
 
 
+.. opcode:: ATOMINC_WRAP - Atomic increment + wrap around
+
+  Syntax: ``ATOMINC_WRAP dst, resource, offset, src``
+
+  Example: ``ATOMINC_WRAP TEMP[0], BUFFER[0], TEMP[1], TEMP[2]``
+
+  The following operation is performed atomically:
+
+.. math::
+
+  dst_x = resource[offset] + 1
+
+  resource[offset] = dst_x <= src_x ? dst_x : 0
+
+
+.. opcode:: ATOMDEC_WRAP - Atomic decrement + wrap around
+
+  Syntax: ``ATOMDEC_WRAP dst, resource, offset, src``
+
+  Example: ``ATOMDEC_WRAP TEMP[0], BUFFER[0], TEMP[1], TEMP[2]``
+
+  The following operation is performed atomically:
+
+.. math::
+
+  dst_x = resource[offset]
+
+  resource[offset] = (dst_x > 0 && dst_x < src_x) ? dst_x - 1 : 0
+
+
 .. _interlaneopcodes:
 
 Inter-lane opcodes
@@ -3205,24 +3235,6 @@ tessellation evaluation shaders, respectively. Only the value written in the
 last vertex processing stage is used.
 
 
-TGSI_SEMANTIC_CULLDIST
-""""""""""""""""""""""
-
-Used as distance to plane for performing application-defined culling
-of individual primitives against a plane. When components of vertex
-elements are given this label, these values are assumed to be a
-float32 signed distance to a plane. Primitives will be completely
-discarded if the plane distance for all of the vertices in the
-primitive are < 0. If a vertex has a cull distance of NaN, that
-vertex counts as "out" (as if its < 0);
-The limits on both clip and cull distances are bound
-by the PIPE_MAX_CLIP_OR_CULL_DISTANCE_COUNT define which defines
-the maximum number of components that can be used to hold the
-distances and by the PIPE_MAX_CLIP_OR_CULL_DISTANCE_ELEMENT_COUNT
-which specifies the maximum number of registers which can be
-annotated with those semantics.
-
-
 TGSI_SEMANTIC_CLIPDIST
 """"""""""""""""""""""
 
@@ -3483,6 +3495,18 @@ A bit mask of ``bit index < TGSI_SEMANTIC_SUBGROUP_INVOCATION``, i.e.
 ``(1 << subgroup_invocation) - 1`` in arbitrary precision arithmetic.
 
 
+TGSI_SEMANTIC_TESS_DEFAULT_OUTER_LEVEL
+""""""""""""""""""""""""""""""""""""""
+
+A system value equal to the default_outer_level array set via set_tess_level.
+
+
+TGSI_SEMANTIC_TESS_DEFAULT_INNER_LEVEL
+""""""""""""""""""""""""""""""""""""""
+
+A system value equal to the default_inner_level array set via set_tess_level.
+
+
 Declaration Interpolate
 ^^^^^^^^^^^^^^^^^^^^^^^