X-Git-Url: https://git.cworth.org/git?a=blobdiff_plain;f=README.markdown;h=9702ba0739294d14c41c8c7eb1264c3491d1391a;hb=b4c584d31d7795428a8a30e353c3f4bc02c5ae5e;hp=f56412aea7c02914173ca6d9e0af3752ba08495c;hpb=6d61700ca8794f56ca23932f68b312176ce4eb84;p=apitrace diff --git a/README.markdown b/README.markdown index f56412a..9702ba0 100644 --- a/README.markdown +++ b/README.markdown @@ -3,43 +3,120 @@ About **apitrace** **apitrace** consists of a set of tools to: -* trace OpenGL, D3D9, D3D8, D3D7, and DDRAW APIs calls to a file; +* trace OpenGL, OpenGL ES, Direct3D, and DirectDraw APIs calls to a file; -* retrace OpenGL calls from a file; +* retrace OpenGL and OpenGL ES calls from a file; -* visualize trace files, and inspect state. +* inspect OpenGL state at any call while retracing; +* visualize and edit trace files. -Basic usage -=========== +Obtaining **apitrace** +====================== + +To obtain apitrace either [download the latest +binaries](https://github.com/apitrace/apitrace/downloads) for your platform if +available, or follow the instructions in INSTALL.markdown to build it yourself. +On 64bits Linux and Windows platforms you'll need apitrace binaries that match +the architecture (32bits or 64bits) of the application being traced. -Linux ------ + +Basic usage +=========== Run the application you want to trace as - LD_PRELOAD=/path/to/glxtrace.so /path/to/application + apitrace trace --api API /path/to/application [args...] and it will generate a trace named `application.trace` in the current -directory. You can specify the written trace filename by setting the -`TRACE_FILE` environment variable before running. +directory. You can specify the written trace filename by passing the +`--output` command line option. + +Problems while tracing (e.g, if the application uses calls/parameters +unsupported by apitrace) will be reported via stderr output on Unices. On +Windows you'll need to run +[DebugView](http://technet.microsoft.com/en-us/sysinternals/bb896647) to view +these messages. + +Follow the "Tracing manually" instructions below if you cannot obtain a trace. View the trace with - /path/to/tracedump application.trace | less -R + apitrace dump application.trace -Replay the trace with +Replay an OpenGL trace with - /path/to/glretrace application.trace + glretrace application.trace Pass the `-sb` option to use a single buffered visual. Pass `--help` to glretrace for more options. + +Basic GUI usage +=============== + Start the GUI as - /path/to/qapitrace application.trace + qapitrace application.trace + +You can also tell the GUI to go directly to a specific call + + qapitrace application.trace 12345 + + +Advanced command line usage +=========================== + + +Call sets +--------- + +Several tools take `CALLSET` arguments, e.g: + + apitrace dump --calls CALLSET foo.trace + glretrace -S CALLSET foo.trace + +The call syntax is very flexible. Here are a few examples: + * `4` one call + + * `1,2,4,5` set of calls + + * `"1 2 4 5"` set of calls (commas are optional and can be replaced with whitespace) + + * `1-100/2` calls 1, 3, 5, ..., 99 + + * `1-1000/draw` all draw calls between 1 and 1000 + + * `1-1000/fbo` all fbo changes between calls 1 and 1000 + + * `frame` all calls at end of frames + + * `@foo.txt` read call numbers from `foo.txt`, using the same syntax as above + + + +Tracing manually +---------------- + +### Linux ### + +On 64 bits systems, you'll need to determine ether the application is 64 bits +or 32 bits. This can be done by doing + + file /path/to/application + +But beware of wrapper shell scripts -- what matters is the architecture of the +main process. + +Run the application you want to trace as + + LD_PRELOAD=/path/to/apitrace/wrappers/glxtrace.so /path/to/application + +and it will generate a trace named `application.trace` in the current +directory. You can specify the written trace filename by setting the +`TRACE_FILE` environment variable before running. The `LD_PRELOAD` mechanism should work with most applications. There are some applications, e.g., Unigine Heaven, which global function pointers with the @@ -50,23 +127,84 @@ segfault when trying to write to them. For these applications it is possible to trace by using `glxtrace.so` as an ordinary `libGL.so` and injecting into `LD_LIBRARY_PATH`: - ln -s glxtrace.so libGL.so - ln -s glxtrace.so libGL.so.1 - ln -s glxtrace.so libGL.so.1.2 - export LD_LIBRARY_PATH=/path/to/directory/where/glxtrace/is:$LD_LIBRARY_PATH + ln -s glxtrace.so wrappers/libGL.so + ln -s glxtrace.so wrappers/libGL.so.1 + ln -s glxtrace.so wrappers/libGL.so.1.2 + export LD_LIBRARY_PATH=/path/to/apitrace/wrappers:$LD_LIBRARY_PATH export TRACE_LIBGL=/path/to/real/libGL.so.1 /path/to/application See the `ld.so` man page for more information about `LD_PRELOAD` and `LD_LIBRARY_PATH` environment flags. +To trace the application inside gdb, invoke gdb as: + gdb --ex 'set exec-wrapper env LD_PRELOAD=/path/to/glxtrace.so' --args /path/to/application -Mac OS X --------- +### Android ### -Usage on Mac OS X is similar to Linux above, except for the tracing procedure, -which is instead: +The following instructions should work at least for Android Ice Scream +Sandwitch: + +For standalone applications the instructions above for Linux should +work. To trace applications started from within the Android VM process +(app_process aka zygote) you'll have to wrap this process and enable +tracing dynamically for the application to be traced. + +- Wrapping the android main VM process: + + In the Android root /init.rc add the LD_PRELOAD setting to zygote's + environment in the 'service zygote' section: + + """ + service zygote ... + setenv LD_PRELOAD /data/egltrace.so + ... + """ + + Note that ICS will overwrite the /init.rc during each boot with the + version in the recovery image. So you'll have to change the file in + your ICS source tree, rebuild and reflash the device. + Rebuilding/reflashing only the recovery image should be sufficient. + + +- Copy egltrace.so to /data + + On the host: + $ adb push /path/to/apitrace/build/wrappers/egltrace.so /data + + +- Adjust file permissions to store the trace file: + + By default egltrace.so will store the trace in + /data/app_process.trace. For this to work for applications running + with a uid other than 0, you have to allow writes to the /data + directory on the device: + + # chmod 0777 /data + + +- Enable tracing for a specific process name: + + To trace for example the Settings application: + # setprop debug.apitrace.procname com.android.settings + + In general this name will match what 'ps' reports. + + +- Start the application: + + If the application was already running, for example due to ICS's way + of pre-starting the apps, you might have to kill the application + first: + + # kill + + Launch the application for example from the application menu. + +### Mac OS X ### + +Run the application you want to trace as DYLD_LIBRARY_PATH=/path/to/apitrace/wrappers /path/to/application @@ -75,26 +213,71 @@ Note that although Mac OS X has an `LD_PRELOAD` equivalent, `DYLD_FORCE_FLAT_NAMESPACE=1` which breaks most applications. See the `dyld` man page for more details about these environment flags. +### Windows ### -Windows -------- +When tracing third-party applications, you can identify the target +application's main executable, either by: -* Copy `opengl32.dll`, `d3d8.dll`, or `d3d9.dll` from build/wrappers directory - to the directory with the application you want to trace. +* right clicking on the application's icon in the _Start Menu_, choose + _Properties_, and see the _Target_ field; -* Run the application. +* or by starting the application, run Windows Task Manager (taskmgr.exe), right + click on the application name in the _Applications_ tab, choose _Go To Process_, + note the highlighted _Image Name_, and search it on `C:\Program Files` or + `C:\Program Files (x86)`. -* View the trace with +On 64 bits Windows, you'll need to determine ether the application is a 64 bits +or 32 bits. 32 bits applications will have a `*32` suffix in the _Image Name_ +column of the _Processes_ tab of _Windows Task Manager_ window. - \path\to\tracedump application.trace +Copy the appropriate `opengl32.dll`, `d3d8.dll`, or `d3d9.dll` from the +wrappers directory to the directory with the application you want to trace. +Then run the application as usual. -* Replay the trace with +You can specify the written trace filename by setting the `TRACE_FILE` +environment variable before running. - \path\to\glretrace application.trace +Emitting annotations to the trace +--------------------------------- + +From OpenGL applications you can embed annotations in the trace file through the +[`GL_GREMEDY_string_marker`](http://www.opengl.org/registry/specs/GREMEDY/string_marker.txt) +and +[`GL_GREMEDY_frame_terminator`](http://www.opengl.org/registry/specs/GREMEDY/frame_terminator.txt) +GL extensions. + +**apitrace** will advertise and intercept these GL extensions independently of +the GL implementation. So all you have to do is to use these extensions when +available. + +For example, if you use [GLEW](http://glew.sourceforge.net/) to dynamically +detect and use GL extensions, you could easily accomplish this by doing: + + void foo() { + + if (GLEW_GREMEDY_string_marker) { + glStringMarkerGREMEDY(0, __FUNCTION__ ": enter"); + } + + ... + + if (GLEW_GREMEDY_string_marker) { + glStringMarkerGREMEDY(0, __FUNCTION__ ": leave"); + } + + } + +This has the added advantage of working equally well with gDEBugger. + + +From OpenGL ES applications you can embed annotations in the trace file through the +[`GL_EXT_debug_marker`](http://www.khronos.org/registry/gles/extensions/EXT/EXT_debug_marker.txt) +extension. -Advanced command line usage -=========================== + +For Direct3D applications you can follow the same procedure used for +[instrumenting an application for PIX](http://technet.microsoft.com/en-us/query/ee417250) Dump GL state at a particular call @@ -102,19 +285,19 @@ Dump GL state at a particular call You can get a dump of the bound GL state at call 12345 by doing: - /path/to/glretrace -D 12345 application.trace > 12345.json + glretrace -D 12345 application.trace > 12345.json This is precisely the mechanism the GUI obtains its own state. -You can compare two state dumps with the jsondiff.py script: +You can compare two state dumps by doing: - ./scripts/jsondiff.py 12345.json 67890.json + apitrace diff-state 12345.json 67890.json Comparing two traces side by side --------------------------------- - ./scripts/tracediff.sh trace1.trace trace2.trace + apitrace diff trace1.trace trace2.trace This works only on Unices, and it will truncate the traces due to performance limitations. @@ -125,40 +308,50 @@ Recording a video with FFmpeg You can make a video of the output by doing - /path/to/glretrace -s - application.trace \ + glretrace -s - application.trace \ | ffmpeg -r 30 -f image2pipe -vcodec ppm -i pipe: -vcodec mpeg4 -y output.mp4 +Triming a trace +--------------- + +You can make a smaller trace by doing: + + apitrace trim --callset 100-1000 -o trimed.trace applicated.trace + +If you need precise control over which calls to trim you can specify the +individual call numbers a plaintext file, as described in the 'Call sets' +section above. + + Advanced usage for OpenGL implementors ====================================== -There are several avanced usage examples meant for OpenGL implementors. +There are several advanced usage examples meant for OpenGL implementors. Regression testing ------------------ -These are the steps to create a regression testsuite around apitrace: +These are the steps to create a regression test-suite around **apitrace**: * obtain a trace -* obtain reference snapshots, by doing: +* obtain reference snapshots, by doing on a reference system: - mkdir /path/to/snapshots/ - /path/to/glretrace -s /path/to/reference/snapshots/ application.trace - - on reference system. + mkdir /path/to/reference/snapshots/ + glretrace -s /path/to/reference/snapshots/ application.trace * prune the snapshots which are not interesting * to do a regression test, do: - /path/to/glretrace -c /path/to/reference/snapshots/ application.trace + glretrace -c /path/to/reference/snapshots/ application.trace - Alternatively, for a HTML summary, use the snapdiff script: + Alternatively, for a HTML summary, use `apitrace diff-images`: - /path/to/glretrace -s /path/to/current/snapshots/ application.trace - ./scripts/snapdiff.py --output summary.html /path/to/reference/snapshots/ /path/to/current/snapshots/ + glretrace -s /path/to/test/snapshots/ application.trace + apitrace diff-images --output summary.html /path/to/reference/snapshots/ /path/to/test/snapshots/ Automated git-bisection @@ -209,7 +402,7 @@ failures. The `--gl-renderer` option will also cause a commit to be skipped if the `GL_RENDERER` is unexpected (e.g., when a software renderer or another GL -driver is unintentianlly loaded due to missing symbol in the DRI driver, or +driver is unintentionally loaded due to missing symbol in the DRI driver, or another runtime fault). @@ -217,25 +410,29 @@ Side by side retracing ---------------------- In order to determine which draw call a regression first manifests one could -generate snapshots for every draw call, using the -S option. That is, however, +generate snapshots for every draw call, using the `-S` option. That is, however, very inefficient for big traces with many draw calls. A faster approach is to run both the bad and a good GL driver side-by-side. -The latter can be either a preivously known good build of the GL driver, or a +The latter can be either a previously known good build of the GL driver, or a reference software renderer. This can be achieved with retracediff.py script, which invokes glretrace with different environments, allowing to choose the desired GL driver by -manipulating variables such as `LD_LIBRARY_PATH` or `LIBGL_DRIVERS_DIR`. +manipulating variables such as `LD_LIBRARY_PATH`, `LIBGL_DRIVERS_DIR`, or +`TRACE_LIBGL`. -For example: +For example, on Linux: ./scripts/retracediff.py \ --ref-env LD_LIBRARY_PATH=/path/to/reference/GL/implementation \ - -r ./glretrace \ + --retrace /path/to/glretrace \ --diff-prefix=/path/to/output/diffs \ application.trace +Or on Windows: + + python scripts\retracediff.py --retrace \path\to\glretrace.exe --ref-env TRACE_LIBGL=\path\to\reference\opengl32.dll application.trace Links @@ -267,8 +464,12 @@ Closed-source: * [D3DSpy](http://doc.51windows.net/Directx9_SDK/?url=/directx9_sdk/graphics/programmingguide/TutorialsAndSamplesAndToolsAndTips/Tools/D3DSpy.htm): the predecessor of PIX +* [NVIDIA PerfKit](http://developer.nvidia.com/nvidia-perfkit) + * [AMD GPU PerfStudio](http://developer.amd.com/gpu/PerfStudio/pages/APITraceWindow.aspx) +* [Intel Graphics Performance Analyzers](http://www.intel.com/software/gpa/) + OpenGL ------ @@ -281,9 +482,11 @@ Open-source: * [tracy](https://gitorious.org/tracy): OpenGL ES and OpenVG trace, retrace, and state inspection +* [WebGL-Inspector](http://benvanik.github.com/WebGL-Inspector/) + Closed-source: -* [gDEBugger](http://www.gremedy.com/products.php) +* [gDEBugger](http://www.gremedy.com/products.php) and [AMD gDEBugger](http://developer.amd.com/tools/gDEBugger/Pages/default.aspx) * [glslDevil](http://cumbia.informatik.uni-stuttgart.de/glsldevil/index.html)