Add Gallium docs.

In Sphinx/ReST format.

src/gallium/docs/source/conf.py

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+# -*- coding: utf-8 -*-
+#
+# Gallium documentation build configuration file, created by
+# sphinx-quickstart on Sun Dec 20 14:09:05 2009.
+#
+# This file is execfile()d with the current directory set to its containing dir.
+#
+# Note that not all possible configuration values are present in this
+# autogenerated file.
+#
+# All configuration values have a default; values that are commented out
+# serve to show the default.
+
+import sys, os
+
+# If extensions (or modules to document with autodoc) are in another directory,
+# add these directories to sys.path here. If the directory is relative to the
+# documentation root, use os.path.abspath to make it absolute, like shown here.
+#sys.path.append(os.path.abspath('.'))
+
+# -- General configuration -----------------------------------------------------
+
+# Add any Sphinx extension module names here, as strings. They can be extensions
+# coming with Sphinx (named 'sphinx.ext.*') or your custom ones.
+extensions = []
+
+# Add any paths that contain templates here, relative to this directory.
+templates_path = ['_templates']
+
+# The suffix of source filenames.
+source_suffix = '.rst'
+
+# The encoding of source files.
+#source_encoding = 'utf-8'
+
+# The master toctree document.
+master_doc = 'index'
+
+# General information about the project.
+project = u'Gallium'
+copyright = u'2009, VMWare, X.org, Nouveau'
+
+# The version info for the project you're documenting, acts as replacement for
+# |version| and |release|, also used in various other places throughout the
+# built documents.
+#
+# The short X.Y version.
+version = '0.3'
+# The full version, including alpha/beta/rc tags.
+release = '0.3'
+
+# The language for content autogenerated by Sphinx. Refer to documentation
+# for a list of supported languages.
+#language = None
+
+# There are two options for replacing |today|: either, you set today to some
+# non-false value, then it is used:
+#today = ''
+# Else, today_fmt is used as the format for a strftime call.
+#today_fmt = '%B %d, %Y'
+
+# List of documents that shouldn't be included in the build.
+#unused_docs = []
+
+# List of directories, relative to source directory, that shouldn't be searched
+# for source files.
+exclude_trees = []
+
+# The reST default role (used for this markup: `text`) to use for all documents.
+#default_role = None
+
+# If true, '()' will be appended to :func: etc. cross-reference text.
+#add_function_parentheses = True
+
+# If true, the current module name will be prepended to all description
+# unit titles (such as .. function::).
+#add_module_names = True
+
+# If true, sectionauthor and moduleauthor directives will be shown in the
+# output. They are ignored by default.
+#show_authors = False
+
+# The name of the Pygments (syntax highlighting) style to use.
+pygments_style = 'sphinx'
+
+# A list of ignored prefixes for module index sorting.
+#modindex_common_prefix = []
+
+
+# -- Options for HTML output ---------------------------------------------------
+
+# The theme to use for HTML and HTML Help pages.  Major themes that come with
+# Sphinx are currently 'default' and 'sphinxdoc'.
+html_theme = 'default'
+
+# Theme options are theme-specific and customize the look and feel of a theme
+# further.  For a list of options available for each theme, see the
+# documentation.
+#html_theme_options = {}
+
+# Add any paths that contain custom themes here, relative to this directory.
+#html_theme_path = []
+
+# The name for this set of Sphinx documents.  If None, it defaults to
+# "<project> v<release> documentation".
+#html_title = None
+
+# A shorter title for the navigation bar.  Default is the same as html_title.
+#html_short_title = None
+
+# The name of an image file (relative to this directory) to place at the top
+# of the sidebar.
+#html_logo = None
+
+# The name of an image file (within the static path) to use as favicon of the
+# docs.  This file should be a Windows icon file (.ico) being 16x16 or 32x32
+# pixels large.
+#html_favicon = None
+
+# Add any paths that contain custom static files (such as style sheets) here,
+# relative to this directory. They are copied after the builtin static files,
+# so a file named "default.css" will overwrite the builtin "default.css".
+html_static_path = ['_static']
+
+# If not '', a 'Last updated on:' timestamp is inserted at every page bottom,
+# using the given strftime format.
+#html_last_updated_fmt = '%b %d, %Y'
+
+# If true, SmartyPants will be used to convert quotes and dashes to
+# typographically correct entities.
+#html_use_smartypants = True
+
+# Custom sidebar templates, maps document names to template names.
+#html_sidebars = {}
+
+# Additional templates that should be rendered to pages, maps page names to
+# template names.
+#html_additional_pages = {}
+
+# If false, no module index is generated.
+#html_use_modindex = True
+
+# If false, no index is generated.
+#html_use_index = True
+
+# If true, the index is split into individual pages for each letter.
+#html_split_index = False
+
+# If true, links to the reST sources are added to the pages.
+#html_show_sourcelink = True
+
+# If true, an OpenSearch description file will be output, and all pages will
+# contain a <link> tag referring to it.  The value of this option must be the
+# base URL from which the finished HTML is served.
+#html_use_opensearch = ''
+
+# If nonempty, this is the file name suffix for HTML files (e.g. ".xhtml").
+#html_file_suffix = ''
+
+# Output file base name for HTML help builder.
+htmlhelp_basename = 'Galliumdoc'
+
+
+# -- Options for LaTeX output --------------------------------------------------
+
+# The paper size ('letter' or 'a4').
+#latex_paper_size = 'letter'
+
+# The font size ('10pt', '11pt' or '12pt').
+#latex_font_size = '10pt'
+
+# Grouping the document tree into LaTeX files. List of tuples
+# (source start file, target name, title, author, documentclass [howto/manual]).
+latex_documents = [
+  ('index', 'Gallium.tex', u'Gallium Documentation',
+   u'VMWare, X.org, Nouveau', 'manual'),
+]
+
+# The name of an image file (relative to this directory) to place at the top of
+# the title page.
+#latex_logo = None
+
+# For "manual" documents, if this is true, then toplevel headings are parts,
+# not chapters.
+#latex_use_parts = False
+
+# Additional stuff for the LaTeX preamble.
+#latex_preamble = ''
+
+# Documents to append as an appendix to all manuals.
+#latex_appendices = []
+
+# If false, no module index is generated.
+#latex_use_modindex = True

src/gallium/docs/source/cso.rst

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+CSO
+===
+
+.. toctree::
+   :glob:
+
+   cso/*

src/gallium/docs/source/cso/blend.rst

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+Blend
+=====
+
+This state controls blending of the final fragments into the target rendering
+buffers.
+
+XXX it is unresolved what behavior should result if blend_enable is off.
+
+Members
+-------
+
+XXX

src/gallium/docs/source/cso/dsa.rst

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+Depth, Stencil, & Alpha
+=======================
+
+These three states control the depth, stencil, and alpha tests, used to
+discard fragments that have passed through the fragment shader.
+
+Traditionally, these three tests have been clumped together in hardware, so
+they are all stored in one structure.
+
+Depth Members
+-------------
+
+XXX
+
+Stencil Members
+---------------
+
+XXX
+
+Alpha Members
+-------------
+
+XXX

src/gallium/docs/source/cso/rasterizer.rst

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+Rasterizer
+==========
+
+The rasterizer is the main chunk of state controlling how vertices are
+interpolated into fragments.
+
+Members
+-------
+
+XXX

src/gallium/docs/source/cso/sampler.rst

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+Sampler
+=======
+
+Texture units have many options for selecting texels from loaded textures;
+this state controls an individual texture unit's texel-sampling settings.
+
+Members
+-------
+
+XXX

src/gallium/docs/source/cso/shader.rst

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+Shader
+======
+
+One of the two types of shaders supported by Gallium.
+
+Members
+-------
+
+tokens
+    A list of tgsi_tokens.

src/gallium/docs/source/index.rst

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+.. Gallium documentation master file, created by
+   sphinx-quickstart on Sun Dec 20 14:09:05 2009.
+   You can adapt this file completely to your liking, but it should at least
+   contain the root `toctree` directive.
+
+Welcome to Gallium's documentation!
+===================================
+
+Contents:
+
+.. toctree::
+   :maxdepth: 2
+
+   intro
+   tgsi
+   cso
+
+Indices and tables
+==================
+
+* :ref:`genindex`
+* :ref:`modindex`
+* :ref:`search`
+

src/gallium/docs/source/intro.rst

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+Introduction
+============
+
+What is Gallium?
+----------------
+
+Gallium is essentially an API for writing graphics drivers in a largely
+device-agnostic fashion. It provides several objects which encapsulate the
+core services of graphics hardware in a straightforward manner.

src/gallium/docs/source/tgsi.rst

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+TGSI
+====
+
+TGSI, Tungsten Graphics Shader Instructions, is an intermediate language
+for describing shaders. Since Gallium is inherently shaderful, shaders are
+an important part of the API. TGSI is the only intermediate representation
+used by all drivers.