Ian Romanick c40a88b6c5 meta/generate_mipmap: Only modify the draw framebuffer binding in fallback_required
Previously GL_FRAMEBUFFER was used.  However, if GL_EXT_framebuffer_blit
is supported (note: it is supported by every Mesa driver), this is
*sometimes* an alias for GL_DRAW_FRAMEBUFFER (getters) and *sometimes*
an alias for *both* GL_DRAW_FRAMEBUFFER and GL_READ_FRAMEBUFFER
(setters).  As a result, the code saved one binding but modified both.
If the bindings were different, the GL_READ_FRAMEBUFFER would be
incorrect on exit.

Fixes the piglit fbo-generatemipmap-versus-READ_FRAMEBUFFER test.

Ideally this function would use DSA functions and not modify the binding
at all.  However, that would be a much more intrusive change because
_mesa_meta_bind_fbo_image would also need to be modified.
_mesa_meta_bind_fbo_image has a lot of callers.  Much of this code is
about to get a major rework due to bug #92363, so I don't think it
matters too much.  In fact, I discovered this bug while working on the
other bug.  Le bon temps!

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Anuj Phogat <anuj.phogat@gmail.com>
Cc: "10.6 11.0" <mesa-stable@lists.freedesktop.org>
2015-11-16 10:30:10 -08:00
2015-03-16 22:55:08 -07:00

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 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.
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