On Sunday, October 22, 2017 1:01:36 PM PDT Jordan Justen wrote: > If the i965 gen program cannot be loaded from the cache, then we > fallback to using a serialized nir program. > > This is based on "i965: add cache fallback support" by Timothy Arceri > <timothy.arc...@collabora.com>. Tim's version was written to fallback > to compiling from source, and therefore had to be much more complex. > After Connor and Jason implemented nir serialization, I was able to > rewrite and greatly simplify this patch. > > Signed-off-by: Jordan Justen <jordan.l.jus...@intel.com> > Acked-by: Timothy Arceri <tarc...@itsqueeze.com> > --- > src/mesa/drivers/dri/i965/brw_disk_cache.c | 27 ++++++++++++++++++++++++++- > 1 file changed, 26 insertions(+), 1 deletion(-) > > diff --git a/src/mesa/drivers/dri/i965/brw_disk_cache.c > b/src/mesa/drivers/dri/i965/brw_disk_cache.c > index 503c6c7b499..9af893d40a7 100644 > --- a/src/mesa/drivers/dri/i965/brw_disk_cache.c > +++ b/src/mesa/drivers/dri/i965/brw_disk_cache.c > @@ -24,6 +24,7 @@ > #include "compiler/blob.h" > #include "compiler/glsl/ir_uniform.h" > #include "compiler/glsl/shader_cache.h" > +#include "compiler/nir/nir_serialize.h" > #include "main/mtypes.h" > #include "util/disk_cache.h" > #include "util/macros.h" > @@ -58,6 +59,27 @@ gen_shader_sha1(struct brw_context *brw, struct gl_program > *prog, > _mesa_sha1_compute(manifest, strlen(manifest), out_sha1); > } > > +static void > +fallback_to_full_recompile(struct brw_context *brw, struct gl_program *prog,
It's not exactly a full recompile anymore, maybe rename this to recompile_from_nir? Or fallback_to_partial_recompile? > + gl_shader_stage stage) > +{ > + prog->program_written_to_cache = false; > + if (brw->ctx._Shader->Flags & GLSL_CACHE_INFO) { > + fprintf(stderr, "falling back to nir %s.\n", > + _mesa_shader_stage_to_abbrev(prog->info.stage)); > + } > + > + if (!prog->nir) { > + assert(prog->driver_cache_blob && prog->driver_cache_blob_size > 0); > + const struct nir_shader_compiler_options *options = > + brw->ctx.Const.ShaderCompilerOptions[stage].NirOptions; > + struct blob_reader reader; > + blob_reader_init(&reader, prog->driver_cache_blob, > + prog->driver_cache_blob_size); > + prog->nir = nir_deserialize(NULL, options, &reader); > + } > +} > + > static void > write_blob_program_data(struct blob *binary, const void *program, > size_t program_size, > @@ -280,6 +302,9 @@ brw_disk_cache_upload_program(struct brw_context *brw, > gl_shader_stage stage) > prog->sh.LinkedTransformFeedback->api_enabled) > return false; > > + if (brw->ctx._Shader->Flags & GLSL_CACHE_FALLBACK) > + goto FAIL; > + > if (prog->sh.data->LinkStatus != linking_skipped) > goto FAIL; > > @@ -293,7 +318,7 @@ brw_disk_cache_upload_program(struct brw_context *brw, > gl_shader_stage stage) > return true; > > FAIL: > - /*FIXME: Fall back and compile from source here. */ > + fallback_to_full_recompile(brw, prog, stage); > return false; > } > >
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