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subroutine variables are to be used just in the way functions are
called. Although the spec doesn't say it explicitely, this means that
these variables are not to be used in any other way than those left
for function calls. Therefore, a comparison between 2 subroutine
variables should also cause a compilation error.
From The OpenGL® Shading Language 4.40, page 117:
" To use subroutines, a subroutine type is declared, one or more
functions are associated with that subroutine type, and a
subroutine variable of that type is declared. The function
currently assigned to the variable function is then called by
using function calling syntax replacing a function name with the
name of the subroutine variable. Subroutine variables are
uniforms, and are assigned to specific functions only through
commands (UniformSubroutinesuiv) in the OpenGL API."
From The OpenGL® Shading Language 4.40, page 118:
" Subroutine uniform variables are called the same way functions
are called. When a subroutine variable (or an element of a
subroutine variable array) is associated with a particular
function, all function calls through that variable will call that
particular function."
Fixes GL44-CTS.shader_subroutine.subroutines_cannot_be_assigned_float_int_values_or_be_compared
Signed-off-by: Andres Gomez <agomez@igalia.com>
Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>
Reviewed-by: Dave Airlie <airlied@redhat.com>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
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| .mailmap | ||
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| Android.mk | ||
| appveyor.yml | ||
| autogen.sh | ||
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| common.py | ||
| configure.ac | ||
| install-gallium-links.mk | ||
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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.