2013/9/20 Tapani Pälli <tapani.pa...@intel.com> > Hello; > > This is RFC for shader cache implementation, goal is to optimize > application > startup time. The implementation is based on idea that Kenneth had on a > Mesa > branch for memory based cache. These patches implement a 'behind the > scenes' > cache for shader compiler storing gl_shader struct to the disk. Later on my > goal is to implement OES_get_program_binary extension using some of this > implementation as the basis. > > There are already number of TODO's and issues mentioned in commit msgs, > please check these first. Then, there are probably bugs and missing things > that I'm not aware of, please let me know about any of these. One big TODO > is to rewrite the serialization to happen to memory area first (not > directly > to the disk), this will make serialization more robust with more > centralized > error handling but also makes it more usable for OES_get_program_binary > implementation. I haven't paid much attention to the portability of this > code > so I would be interested to know also how well this would work with windows > and others. > > One big TODO/goal is to move this all to happen after linking to cache > all shaders in a gl program. This will give far better optimization for > startup time. Currently rough approx 1/4 time is spent during compilation > but much more after linking and optimizations done after linking (this is > based on analysis done with particular app and callgrind). I have already > somewhat promising results from this cache, for example compiling L4D2 > shaders and shader-db runs are faster.. > > On my SNB desktop machine shader-db takes ~2.4secs without cache, with > cache > it takes ~1.8secs (~2.7 when cache gets generated) (values are avg from 100 > runs compiling all the shaders). Shader-db creates 266 blobs eating 46M of > disk space when using cache. >
This sounds that we will need a configure option to disable the cache on platforms with a low amount of disk space (thinking of phones/embedded devices here). > Any comments greatly appreciated! > > Tapani Pälli (4): > glsl: add ir_cache class for IR serialization (WIP) > mesa: gl_shader_cache class (WIP) > glsl: export populate_symbol_table > glsl: use gl_shader_cache when compiling (WIP) > > src/glsl/Makefile.sources | 2 + > src/glsl/glsl_parser_extras.cpp | 40 ++ > src/glsl/ir_cache.h | 535 +++++++++++++++++++++ > src/glsl/ir_cache_serialize.cpp | 603 ++++++++++++++++++++++++ > src/glsl/ir_cache_unserialize.cpp | 969 > ++++++++++++++++++++++++++++++++++++++ > src/glsl/linker.cpp | 2 +- > src/glsl/linker.h | 3 + > src/mesa/Makefile.sources | 1 + > src/mesa/main/context.c | 2 + > src/mesa/main/mtypes.h | 4 + > src/mesa/main/shadercache.cpp | 198 ++++++++ > src/mesa/main/shadercache.h | 68 +++ > 12 files changed, 2426 insertions(+), 1 deletion(-) > create mode 100644 src/glsl/ir_cache.h > create mode 100644 src/glsl/ir_cache_serialize.cpp > create mode 100644 src/glsl/ir_cache_unserialize.cpp > create mode 100644 src/mesa/main/shadercache.cpp > create mode 100644 src/mesa/main/shadercache.h > > -- > 1.8.1.4 > > _______________________________________________ > mesa-dev mailing list > mesa-dev@lists.freedesktop.org > http://lists.freedesktop.org/mailman/listinfo/mesa-dev >
_______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/mesa-dev
