Mesa (master): gallium/docs: Label opcodes by capability bits.
Corbin Simpson
csimpson at kemper.freedesktop.org
Thu Jun 17 01:59:03 UTC 2010
Module: Mesa
Branch: master
Commit: 9d4cb6ea36aa0335aa8a6a1e1adc39e40ec5138d
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=9d4cb6ea36aa0335aa8a6a1e1adc39e40ec5138d
Author: Corbin Simpson <MostAwesomeDude at gmail.com>
Date: Wed Jun 16 18:34:32 2010 -0700
gallium/docs: Label opcodes by capability bits.
---
src/gallium/docs/source/tgsi.rst | 29 ++++++++++++++++++++---------
1 files changed, 20 insertions(+), 9 deletions(-)
diff --git a/src/gallium/docs/source/tgsi.rst b/src/gallium/docs/source/tgsi.rst
index 03f27cd..706383a 100644
--- a/src/gallium/docs/source/tgsi.rst
+++ b/src/gallium/docs/source/tgsi.rst
@@ -26,9 +26,11 @@ each of the components of *dst*. When this happens, the result is said to be
Instruction Set
---------------
-From GL_NV_vertex_program
+Core ISA
^^^^^^^^^^^^^^^^^^^^^^^^^
+These opcodes are guaranteed to be available regardless of the driver being
+used.
.. opcode:: ARL - Address Register Load
@@ -637,10 +639,6 @@ This instruction replicates its result.
Considered for removal.
-From GL_NV_vertex_program2
-^^^^^^^^^^^^^^^^^^^^^^^^^^
-
-
.. opcode:: ARA - Address Register Add
TBD
@@ -827,11 +825,14 @@ This instruction replicates its result.
Considered for removal.
-From GL_NV_gpu_program4
+Compute ISA
^^^^^^^^^^^^^^^^^^^^^^^^
+These opcodes are primarily provided for special-use computational shaders.
Support for these opcodes indicated by a special pipe capability bit (TBD).
+XXX so let's discuss it, yeah?
+
.. opcode:: CEIL - Ceiling
.. math::
@@ -989,10 +990,17 @@ Support for these opcodes indicated by a special pipe capability bit (TBD).
TBD
+.. note::
+
+ Support for CONT is determined by a special capability bit,
+ ``TGSI_CONT_SUPPORTED``. See :ref:`Screen` for more information.
+
-From GL_NV_geometry_program4
+Geometry ISA
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+These opcodes are only supported in geometry shaders; they have no meaning
+in any other type of shader.
.. opcode:: EMIT - Emit
@@ -1004,9 +1012,11 @@ From GL_NV_geometry_program4
TBD
-From GLSL
+GLSL ISA
^^^^^^^^^^
+These opcodes are part of :term:`GLSL`'s opcode set. Support for these
+opcodes is determined by a special capability bit, ``GLSL``.
.. opcode:: BGNLOOP - Begin a Loop
@@ -1045,6 +1055,7 @@ This instruction replicates its result.
ps_2_x
^^^^^^^^^^^^
+XXX wait what
.. opcode:: CALLNZ - Subroutine Call If Not Zero
@@ -1062,7 +1073,7 @@ ps_2_x
.. _doubleopcodes:
-Double Opcodes
+Double ISA
^^^^^^^^^^^^^^^
.. opcode:: DADD - Add Double
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