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Paul Berry bd8d257ef3 glsl/linker: fix varying packing for non-flat integer varyings. 
Commit dfb57e7 (glsl: Fix error checking on "flat" keyword to match
GLSL ES 3.00, GLSL 1.50) relaxed the rules for integral varyings: they
only need to be declared as "flat" if they are a fragment shader
inputs.  This allowed for the possibility of a vertex shader output
being a non-flat integer, provided that it was not matched to a
fragment shader input.  A non-contrived situation where this might
arise is if a vertex shader generates some integral outputs which are
consumed by tranform feedback, but not by the fragment shader.

Unfortunately, lower_packed_varyings assumes that *all* integral
varyings are flat, regardless of whether they are consumed by the
fragment shader.  As a result, attempting to create a non-flat
integral vertex output of a size that required packing (i.e. a size
other than ivec4 or uvec4) would cause an assertion failure in
lower_packed_varyings.

This patch prevents the assertion failure by forcing vertex shader
outputs to be "flat" whenever they are not consumed by the fragment
shader.  This should have no effect on rendering since the "flat"
keyword only affects the behaviour of fragment shader inputs.

Fixes piglit test "spec/EXT_transform_feedback/nonflat-integral".

NOTE: This is a candidate for the 9.1 release branch.

Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
(cherry picked from commit 7862bde8af)
2013-05-10 16:41:29 -07:00
bin mesa: Note that patch 0967c36 shouldn't actually get picked to the 9.1 branch 2013-05-10 13:43:11 -07:00
docs docs: Add 9.1.2 release md5sums 2013-04-30 15:25:57 -07:00
doxygen glsl/build: Build glcpp via the glsl Makefile 2013-01-22 14:33:20 -08:00
include include: Fix build with VS 11 (i.e, 2012). 2013-04-05 19:01:08 -07:00
m4 build: Use AX_PROG_FLEX 2013-01-22 14:33:38 -08:00
scons scons: Warn when using MSVS versions prior to 2012. 2013-03-15 19:55:26 +00:00
src glsl/linker: fix varying packing for non-flat integer varyings. 2013-05-10 16:41:29 -07:00
.dir-locals.el Add emacs setup for the docs/devinfo.html comment wrapping recommendation. 2012-07-11 09:20:21 -07:00
.gitattributes Disable autocrlf for Visual Studio project files. 2008-02-28 12:34:01 +09:00
.gitignore Clean up .gitignore files 2013-01-10 22:01:31 +01:00
Android.common.mk android: Define Make variables for Android version 2013-01-02 14:51:18 -08:00
Android.mk android: Define Make variables for Android version 2013-01-02 14:51:18 -08:00
autogen.sh build: Fix autogen.sh to allow out-of-tree builds 2012-08-14 10:54:39 -07:00
common.py scons: Allows choosing VS 10 or 11. 2013-03-15 19:55:26 +00:00
configure.ac mesa: Bump version to 9.1.2 2013-04-30 15:17:47 -07:00
Makefile.am mesa: Bump version to 9.1.2 2013-04-30 15:17:47 -07:00
SConstruct scons: Disable saving options automatically. 2011-07-01 19:04:57 +01:00

docs/README.WIN32 

File: docs/README.WIN32

Last updated: 23 April 2011


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

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

Run

  scons osmesa mesagdi

to build classic mesa Windows GDI drivers; or

  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.


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.