Windows binaries for Mesa 12 LLVMPipe and OpenSWR?

[lowenz]

Man, can you add to your package dxtn.dll too for S3TC support? Here's the source (I don't know how to compile with MSVC, but if you can please add it ! )

libtxc_dxtn-1.0.1.tar.bz2

[monraaf]

Man, can you add to your package dxtn.dll too for S3TC support? Here's the source (I don't know how to compile with MSVC, but if you can please add it ! )

libtxc_dxtn-1.0.1.tar.bz2

lowenz, on 06 Mar 2017 - 5:07 PM, on TheDarkMod forums said:
Found a S3TC standard implementation in CygWin archive.
In theory mesa opengl32.dll + dxtn.dll = complete S3TC support in OpenGL 2.1.

Unfortunately Mesa codebase makes clear distinction between Cygwin and Win32. Additionally libtxc_dxtn source code does not include a sconscript so Visual Studio is not an option. The only option left is Msys2 cross-compilation and with this, things go bad,
Compilation fails.

$ make CC txc_compress_dxtn.lo txc_compress_dxtn.c: In function 'storedxtencodedblock': txc_compress_dxtn.c:287:16: error: 'GL_COMPRESSED_RGB_S3TC_DXT1_EXT' undeclared (first use in this function) if (type == GL_COMPRESSED_RGB_S3TC_DXT1_EXT || type == GL_COMPRESSED_RGBA_S3TC_DXT1_EXT) { ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ txc_compress_dxtn.c:287:16: note: each undeclared identifier is reported only once for each function it appears in txc_compress_dxtn.c:287:59: error: 'GL_COMPRESSED_RGBA_S3TC_DXT1_EXT' undeclared (first use in this function) if (type == GL_COMPRESSED_RGB_S3TC_DXT1_EXT || type == GL_COMPRESSED_RGBA_S3TC_DXT1_EXT) { ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ txc_compress_dxtn.c: In function 'encodedxtcolorblockfaster': txc_compress_dxtn.c:376:23: error: 'GL_COMPRESSED_RGBA_S3TC_DXT1_EXT' undeclared (first use in this function) if ((type != GL_COMPRESSED_RGBA_S3TC_DXT1_EXT) || (srccolors[j][i][3] > ALPHACUT)) { ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ txc_compress_dxtn.c: In function 'tx_compress_dxtn': txc_compress_dxtn.c:769:9: error: 'GL_COMPRESSED_RGB_S3TC_DXT1_EXT' undeclared (first use in this function) case GL_COMPRESSED_RGB_S3TC_DXT1_EXT: ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ txc_compress_dxtn.c:770:9: error: 'GL_COMPRESSED_RGBA_S3TC_DXT1_EXT' undeclared (first use in this function) case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT: ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ txc_compress_dxtn.c:790:9: error: 'GL_COMPRESSED_RGBA_S3TC_DXT3_EXT' undeclared (first use in this function) case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT: ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ txc_compress_dxtn.c:817:9: error: 'GL_COMPRESSED_RGBA_S3TC_DXT5_EXT' undeclared (first use in this function) case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT: ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ make: *** [Makefile:328: txc_compress_dxtn.lo] Error 1 prodea2@DESKTOP-H4RKMNR MINGW64 /home/s3tc $

[lowenz]

You can use Mesa include folder to solve the compilation problem.

[monraaf]

OK, working! Setting the variable per exe using a bat is enough

softpipe -> terrible performance in games
swr -> bad performance in games
llvmpipe -> good performance in games

As expected! (I'm using Yamagi Q2 as benchmark)
So, I return to the first question: How about LLVM 4.0 (I built it successfully targeting X86 arch)? I got some errors using it with MSVC 2015 CE and Mesa!

" Compiling src\compiler\glsl\ast_array_index.cpp ...
ast_array_index.cpp
c:\projects\mesa-master\include\c11\threads_win32.h(151): error C2027: use of undefined type 'xtime'
C:\Projects\mesa-master\include\c11/threads.h(48): note: see declaration of 'xtime'
c:\projects\mesa-master\include\c11\threads_win32.h(151): error C2227: left of '->sec' must point to class/struct/union/generic type
c:\projects\mesa-master\include\c11\threads_win32.h(151): error C2227: left of '->nsec' must point to class/struct/union/generic type
c:\projects\mesa-master\include\c11\threads_win32.h(446): error C2027: use of undefined type 'xtime'
C:\Projects\mesa-master\include\c11/threads.h(48): note: see declaration of 'xtime'
c:\projects\mesa-master\include\c11\threads_win32.h(446): error C2227: left of '->sec' must point to class/struct/union/generic type
c:\projects\mesa-master\include\c11\threads_win32.h(637): error C2027: use of undefined type 'xtime'
C:\Projects\mesa-master\include\c11/threads.h(48): note: see declaration of 'xtime'
c:\projects\mesa-master\include\c11\threads_win32.h(637): error C2227: left of '->sec' must point to class/struct/union/generic type
c:\projects\mesa-master\include\c11\threads_win32.h(638): error C2027: use of undefined type 'xtime'
C:\Projects\mesa-master\include\c11/threads.h(48): note: see declaration of 'xtime'
c:\projects\mesa-master\include\c11\threads_win32.h(638): error C2227: left of '->nsec' must point to class/struct/union/generic type
scons: *** [build\windows-x86\gallium\auxiliary\gallivm\lp_bld_misc.obj] Error 2
scons: building terminated because of errors."

No errors with LLVM 3.9.1

Fixed in Mesa 17.1.