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Iago Toral Quiroga f9a18acb56 i965: do not round line width when multisampling or antialiaing are enabled 
In commit fe74fee8fa we rounded the line width to the nearest integer to
match the GLES3 spec requirements stated in section 13.4.2.1, but that seems
to break a dEQP test that renders wide lines in some multisampling scenarios.

Ian noted that the Open 4.4 spec has the following similar text:

    "The actual width of non-antialiased lines is determined by rounding the
    supplied width to the nearest integer, then clamping it to the
    implementation-dependent maximum non-antialiased line width."

and suggested that when ES removed antialiased lines, they removed
"non-antialised" from that paragraph but probably should not have.

Going by that note, this patch restricts the quantization implemented in
fe74fee8fa only to regular aliased lines. This seems to keep the
tests fixed with that commit passing while fixing the broken test.

v2:
  - Drop one of the clamps (Ken, Marius)
  - Add a rule to prevent advertising line widths that when rounded go beyond
    the limits allowed by the hardware (Ken)
  - Update comments in the code accordingly (Ian)
  - Put the code in a utility function (Ian)

Fixes:
dEQP-GLES3.functional.rasterization.fbo.rbo_multisample_max.primitives.lines_wide

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=90749

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Cc: "10.6" <mesa-stable@lists.freedesktop.org>
2015-06-11 08:32:07 +02:00
bin get-pick-list: Allow for non-whitespace between "CC:" and "mesa-stable" 2013-07-31 15:49:48 -07:00
docs docs: add news item and link release notes for mesa 10.5.7 2015-06-07 13:44:37 +01:00
doxygen mesa: remove empty glthread.h file 2014-03-03 13:08:59 -07:00
include egl: import platform headers from registry (v2) 2015-06-05 19:44:33 +02:00
m4 configure.ac: move AC_MSG_RESULT reporting back into the m4 macro 2015-03-24 20:49:32 +00:00
scons gallivm: Use the LLVM's C disassembly interface. 2015-05-29 11:20:58 +01:00
src i965: do not round line width when multisampling or antialiaing are enabled 2015-06-11 08:32:07 +02:00
.dir-locals.el dir-locals.el: Don't set variables for non-programming modes 2015-02-02 12:02:55 +00:00
.gitattributes Disable autocrlf for Visual Studio project files. 2008-02-28 12:34:01 +09:00
.gitignore mesa: add .mesa-install-links files to gitignore 2015-04-17 15:24:14 -04:00
Android.common.mk android: build with libcxx on android lollipop 2015-06-09 12:25:50 -07:00
Android.mk android: enable the radeonsi driver 2015-06-09 12:25:50 -07:00
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 common.py: Fix PEP 8 issues. 2015-03-16 22:55:08 -07:00
configure.ac vc4: Drop subdirectory in vc4 build. 2015-06-09 12:25:50 -07:00
install-gallium-links.mk targets/radeonsi/vdpau: convert to static/shared pipe-drivers 2014-06-22 23:06:01 +01:00
install-lib-links.mk install-lib-links: remove the .install-lib-links file 2015-02-24 15:33:25 +00:00
Makefile.am makefile: add all headers to the tarball 2015-03-24 20:49:31 +00:00
SConstruct scons: Don't use bundled C99 headers for VS 2013. 2014-05-02 22:04:46 +01:00
VERSION Post-branch version bump to 10.7.0-devel, add release notes template 2015-05-19 13:23:05 +01:00

docs/README.WIN32 

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 http://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.