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NOTE: The implementation was initially one patch, this. All the history is kept here, even though all the core mesa changes were moved to the parent of this patch. This patch implements ARB_pipeline_statistics_query. This addition to GL does not add a new API. Instead, it adds new tokens to the existing query APIs. The work to hook up the new tokens is trivial due to it's similarity to the previous work done for the query APIs. I've implemented all the new tokens to some degree, but have stubbed out the untested ones at the entry point for Begin(). Doing this should allow the remainder of the code to be left in. The new tokens give GL clients a way to obtain stats about the GL pipeline. Generally, you get the number of things going in, invocations, and number of things coming out, primitives, of the various stages. There are two immediate uses for this, performance information, and debugging various types of misrendering. I doubt one can use these for debugging very complex applications, but for piglit tests, it should be quite useful. Tessellation shaders, and compute shaders are not addressed in this patch because there is no upstream implementation. I've implemented how I believe tessellation shader stats will work for Intel hardware (though there is a bit of ambiguity). Compute shaders are a bit more interesting though, and I don't yet know what we'll do there. For the lazy, here is a link to the relevant part of the spec: https://www.opengl.org/registry/specs/ARB/pipeline_statistics_query.txt Running the piglit tests http://lists.freedesktop.org/archives/piglit/2014-November/013321.html (http://cgit.freedesktop.org/~bwidawsk/piglit/log/?h=pipe_stats) yield the following results: > piglit-run.py -t stats tests/all.py output/pipeline_stats > [5/5] pass: 5 Running Test(s): 5 v2: - Don't allow pipeline_stats to be per stream (Ilia). This may (not sure) be needed for AMD_transform_feedback4, which we do not support. > If AMD_transform_feedback4 is supported then GEOMETRY_SHADER_PRIMITIVES_- > EMITTED_ARB counts primitives emitted to any of the vertex streams for > which STREAM_RASTERIZATION_AMD is enabled. - Remove comment from GL3.txt because it is only used for extensions that are part of required versions (Ilia) - Move the new tokens to a new XML doc instead of using the main GL4x.xml (Ilia) - Add a fallthrough comment (Ilia) - Only divide PS invocations by 4 on HSW+ (Ben) v3: - Add ARB_pipeline_statistics_query to relnotes.html - Add ARB_pipeline_statistics_query.xml to the Makefile.am, and master XML (Ilia) - Correct extension number (Ilia) - Add link to xml in the main GL API xml (Ilia) - remove special GS case from gen6_end_query (Ian) - Make lookup table static so gcc doesn't initialized it on every call (Ian) - Use if (_mesa_has_geometry_shaders(ctx)) instead of explicit checks (Ian) - Core mesa parts moved into a prep patch (Ilia) v4: - Change to 10.6 relnotes since we missed 10.5 window - Moved compute shader stuff into the switch statement (Jordan) - Jordan: Add compute shader support v5: - Fixed relnote style (Ilia) v6: - Rebased on master which beat me to adding the first relnotes - essentially this undoes v5 (which had a typo anyway) - Some code style fixes (Ken) - Remove some excess comments (Ken) - Unify tessellation failure style - unreachable (Ken) - Fix workaround comment for PS invocations (Ken) Signed-off-by: Ben Widawsky <ben@bwidawsk.net> Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
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 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. 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.