gallium: Add PIPE_SHADER_CAP_FP16

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

diff --git a/src/gallium/docs/source/screen.rst b/src/gallium/docs/source/screen.rst
index 871669c0d98f8ccbd6616c6066b5ee5db6520eae..dfbb6cda6cd6439cb75dfb9d34dc781cc577adba 100644 (file)
--- a/src/gallium/docs/source/screen.rst
+++ b/src/gallium/docs/source/screen.rst
@@ -392,6 +392,20 @@ The integer capabilities:
 * ``PIPE_CAP_CAN_BIND_CONST_BUFFER_AS_VERTEX``: Whether a buffer with just
   PIPE_BIND_CONSTANT_BUFFER can be legally passed to set_vertex_buffers.
 * ``PIPE_CAP_ALLOW_MAPPED_BUFFERS_DURING_EXECUTION``: As the name says.
+* ``PIPE_CAP_POST_DEPTH_COVERAGE``: whether
+  ``TGSI_PROPERTY_FS_POST_DEPTH_COVERAGE`` is supported.
+* ``PIPE_CAP_BINDLESS_TEXTURE``: Whether bindless texture operations are
+  supported.
+* ``PIPE_CAP_NIR_SAMPLERS_AS_DEREF``: Whether NIR tex instructions should
+  reference texture and sampler as NIR derefs instead of by indices.
+* ``PIPE_CAP_QUERY_SO_OVERFLOW``: Whether the
+  ``PIPE_QUERY_SO_OVERFLOW_PREDICATE`` and
+  ``PIPE_QUERY_SO_OVERFLOW_ANY_PREDICATE`` query types are supported. Note that
+  for a driver that does not support multiple output streams (i.e.,
+  ``PIPE_CAP_MAX_VERTEX_STREAMS`` is 1), both query types are identical.
+* ``PIPE_CAP_MEMOBJ``: Whether operations on memory objects are supported.
+* ``PIPE_CAP_LOAD_CONSTBUF``: True if the driver supports TGSI_OPCODE_LOAD use
+  with constant buffers.
 
 
 .. _pipe_capf:
@@ -434,21 +448,16 @@ support different features.
 * ``PIPE_SHADER_CAP_MAX_CONST_BUFFER_SIZE``: The maximum size per constant buffer in bytes.
 * ``PIPE_SHADER_CAP_MAX_CONST_BUFFERS``: Maximum number of constant buffers that can be bound
   to any shader stage using ``set_constant_buffer``. If 0 or 1, the pipe will
-  only permit binding one constant buffer per shader, and the shaders will
-  not permit two-dimensional access to constants.
+  only permit binding one constant buffer per shader.
 
 If a value greater than 0 is returned, the driver can have multiple
-constant buffers bound to shader stages. The CONST register file can
-be accessed with two-dimensional indices, like in the example below.
+constant buffers bound to shader stages. The CONST register file is
+accessed with two-dimensional indices, like in the example below.
 
 DCL CONST[0][0..7]       # declare first 8 vectors of constbuf 0
 DCL CONST[3][0]          # declare first vector of constbuf 3
 MOV OUT[0], CONST[0][3]  # copy vector 3 of constbuf 0
 
-For backwards compatibility, one-dimensional access to CONST register
-file is still supported. In that case, the constbuf index is assumed
-to be 0.
-
 * ``PIPE_SHADER_CAP_MAX_TEMPS``: The maximum number of temporary registers.
 * ``PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED``: Whether the continue opcode is supported.
 * ``PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR``: Whether indirect addressing
@@ -463,6 +472,8 @@ to be 0.
   BGNSUB, ENDSUB, CAL, and RET, including RET in the main block.
 * ``PIPE_SHADER_CAP_INTEGERS``: Whether integer opcodes are supported.
   If unsupported, only float opcodes are supported.
+* ``PIPE_SHADER_CAP_FP16``: Whether half precision floating-point opcodes are supported.
+   If unsupported, half precision ops need to be lowered to full precision.
 * ``PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS``: The maximum number of texture
   samplers.
 * ``PIPE_SHADER_CAP_PREFERRED_IR``: Preferred representation of the
@@ -622,17 +633,26 @@ get_name
 
 Returns an identifying name for the screen.
 
+The returned string should remain valid and immutable for the lifetime of
+pipe_screen.
+
 get_vendor
 ^^^^^^^^^^
 
 Returns the screen vendor.
 
+The returned string should remain valid and immutable for the lifetime of
+pipe_screen.
+
 get_device_vendor
 ^^^^^^^^^^^^^^^^^
 
 Returns the actual vendor of the device driving the screen
 (as opposed to the driver vendor).
 
+The returned string should remain valid and immutable for the lifetime of
+pipe_screen.
+
 .. _get_param:
 
 get_param