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i965/link: Serialize program to nir after linking for shader cache 

If the shader cache is enabled, after linking the program, we
serialize the program to nir. This will be saved out by the glsl
shader cache support.

Later, if the same program is found in the cache, we can use the nir
for a fallback in the unlikely case that the gen binary program is not
found in the cache.

Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
This commit is contained in:
Jordan Justen 2017-10-13 13:07:50 -07:00
parent 6b815e405d
commit 0610a624a1
1 changed files with 10 additions and 0 deletions
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10
src/mesa/drivers/dri/i965/brw_link.cpp
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@ -27,6 +27,7 @@
#include "compiler/glsl/ir.h"
#include "compiler/glsl/ir_optimization.h"
#include "compiler/glsl/program.h"
#include "compiler/nir/nir_serialize.h"
#include "program/program.h"
#include "main/mtypes.h"
#include "main/shaderapi.h"
@ -323,6 +324,15 @@ brw_link_shader(struct gl_context *ctx, struct gl_shader_program *shProg)
NIR_PASS_V(prog->nir, nir_lower_samplers, shProg);
NIR_PASS_V(prog->nir, nir_lower_atomics, shProg);
if (brw->ctx.Cache) {
struct blob writer;
blob_init(&writer);
nir_serialize(&writer, prog->nir);
prog->driver_cache_blob = ralloc_size(NULL, writer.size);
memcpy(prog->driver_cache_blob, writer.data, writer.size);
prog->driver_cache_blob_size = writer.size;
}
infos[stage] = &prog->nir->info;
update_xfb_info(prog->sh.LinkedTransformFeedback, infos[stage]);