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Ville Syrjälä 0eef03a6f2 i915: Always emit W on gen3
Unlike the older gen2 hardware, gen3 performs perspective
correct interpolation even for the primary/secondary colors.
To do that it naturally needs us to emit W for the vertices.

Currently we emit W only when at least one texture coordinate
set gets emitted. This means the interpolation of color will
change depending on whether texcoords/varyings are used or not.
That's probably not what anyone would expect, so let's just
always emit W to get consistent behaviour. Trying to avoid
emitting W seems like more hassle than it's worth, especially
as bspec seems to suggest that the hardware will perform the
perspective division anyway.

This used to be broken until it was accidentally fixed it in
commit c349031c27 ("i915: Fix texcoord vs. varying collision
in fragment programs") by introducing a bug that made the driver
always emit W. After fixing that bug in commit c1eedb43f3
("i915: Fix wpos_tex vs. -1 comparison") we went back to the
old behaviour and caused an apparent regression.

Fixes: c1eedb43f3 ("i915: Fix wpos_tex vs. -1 comparison")
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=101451
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
2017-06-21 13:10:58 +03:00
bin bin/get-fixes-pick-list.sh: better identify multiple "fixes:" tags 2017-06-15 15:53:21 +03:00
docs docs: update calendar, add news item and link release notes for 17.1.3 2017-06-19 12:23:07 +01:00
doxygen doxygen: Plumb through gallium/ to automated documentation 2016-05-30 17:53:45 +01:00
include radeonsi: add new polaris12 pci id 2017-06-16 16:03:16 -04:00
m4 build: Remove unused AX_CHECK_COMPILE_FLAG macro 2016-07-25 15:14:12 +02:00
scons scons: update for LLVM 4.0 2017-05-04 18:05:04 +01:00
scripts get_reviewer.pl: fix mesa check 2016-08-30 16:44:00 -04:00
src i915: Always emit W on gen3 2017-06-21 13:10:58 +03:00
.dir-locals.el dir-locals.el: Adds White Space support 2016-11-14 19:17:49 +02:00
.editorconfig editorconfig: Fix up the tab rendering width. 2017-01-03 10:38:53 -08:00
.gitattributes Disable autocrlf for Visual Studio project files. 2008-02-28 12:34:01 +09:00
.gitignore .gitignore: Ignore tags generated by make tags 2016-08-24 11:33:48 +01:00
.mailmap .mailmap: Update my address again 2016-08-25 13:55:52 -07:00
.travis.yml gallium: Add renderonly-based support for pl111+vc4. 2017-06-15 11:41:22 -07:00
Android.common.mk util/vulkan: Move Vulkan utilities to src/vulkan/util 2017-06-06 08:17:13 -07:00
Android.mk gallium: Add renderonly-based support for pl111+vc4. 2017-06-15 11:41:22 -07:00
appveyor.yml appveyor: Update dependencies. 2017-03-29 11:53:03 +01:00
autogen.sh autogen.sh: pass --force to autoreconf, quote ORIGDIR 2015-03-11 23:28:26 +00:00
CleanSpec.mk android: Depend on gallium_dri from EGL, instead of linking in gallium. 2015-06-09 11:38:45 -07:00
common.py scons: Recognize LLVM_CONFIG environment variable. 2016-11-24 13:37:33 -08:00
configure.ac r600g,compute: provide local copy of functions from ac_binary.c 2017-06-16 12:41:44 +01:00
install-gallium-links.mk gallium: Fix install-gallium-links.mk on non-bash /bin/sh 2016-10-10 08:56:12 -07:00
install-lib-links.mk install-lib-links: remove the .install-lib-links file 2015-02-24 15:33:25 +00:00
Makefile.am gallium: Add renderonly-based support for pl111+vc4. 2017-06-15 11:41:22 -07:00
REVIEWERS REVIEWERS: add autogen.sh to the autoconf group 2017-03-23 14:50:51 +00:00
SConstruct scons: whitespace cleanup 2016-05-25 12:23:12 -06:00
VERSION docs: add 17.2.0-devel release notes template, bump version 2017-04-17 14:31:41 +01:00

File: docs/README.WIN32

Last updated: 21 June 2013


Quick Start
----- -----

Windows drivers are build with SCons.  Makefiles or Visual Studio projects are
no longer shipped or supported.

Run

  scons libgl-gdi

to build gallium based GDI driver.

This will work both with MSVS or Mingw.


Windows Drivers
------- -------

At this time, only the gallium GDI driver is known to work.

Source code also exists in the tree for other drivers in
src/mesa/drivers/windows, but the status of this code is unknown.

Recipe
------

Building on windows requires several open-source packages. These are
steps that work as of this writing.

- install python 2.7
- install scons (latest)
- install mingw, flex, and bison
- install pywin32 from here: http://www.lfd.uci.edu/~gohlke/pythonlibs
  get pywin32-218.4.win-amd64-py2.7.exe
- install git
- download mesa from git
  see https://www.mesa3d.org/repository.html
- run scons

General
-------

After building, you can copy the above DLL files to a place in your
PATH such as $SystemRoot/SYSTEM32.  If you don't like putting things
in a system directory, place them in the same directory as the
executable(s).  Be careful about accidentially overwriting files of
the same name in the SYSTEM32 directory.

The DLL files are built so that the external entry points use the
stdcall calling convention.

Static LIB files are not built.  The LIB files that are built with are
the linker import files associated with the DLL files.

The si-glu sources are used to build the GLU libs.  This was done
mainly to get the better tessellator code.

If you have a Windows-related build problem or question, please post
to the mesa-dev or mesa-users list.