[Mesa-dev] [PATCH 21/27] i965: handle incompatiable binaries in shader-cache
Jordan Justen
jordan.l.justen at intel.com
Sat Aug 19 07:44:37 UTC 2017
From: Timothy Arceri <timothy.arceri at collabora.com>
Remove incompatiable binaries of a program before attempting
to store a new one.
A previous commit already handles deleting an incompatiable
binary for shader variants this handles the case for an initial
shader compile. Without this a variant would delete the binary
then fallback to a full recompile but would skip recreating state
that would otherwise normally already exist already and crash.
---
src/mesa/drivers/dri/i965/brw_disk_cache.c | 42 +++++++++++++++++++++++++-----
1 file changed, 35 insertions(+), 7 deletions(-)
diff --git a/src/mesa/drivers/dri/i965/brw_disk_cache.c b/src/mesa/drivers/dri/i965/brw_disk_cache.c
index e8b4f2f5a9..036b56225e 100644
--- a/src/mesa/drivers/dri/i965/brw_disk_cache.c
+++ b/src/mesa/drivers/dri/i965/brw_disk_cache.c
@@ -444,6 +444,40 @@ FAIL:
return false;
}
+static void
+cache_binary(struct brw_context *brw, struct blob *binary,
+ struct disk_cache *cache, unsigned char *sha1)
+{
+ char buf[41];
+ size_t size;
+ uint8_t *buffer = disk_cache_get(cache, sha1, &size);
+
+ if (buffer) {
+ struct blob_reader read_b;
+ blob_reader_init(&read_b, buffer, size);
+
+ char *version_string = blob_read_string(&read_b);
+ if (strcmp(brw->ctx.VersionString, version_string) != 0) {
+ /* The cached version of the program was created with a different
+ * version of Mesa so remove it.
+ */
+ if (brw->ctx._Shader->Flags & GLSL_CACHE_INFO) {
+ fprintf(stderr, "removing binary created with incompatible mesa "
+ "version\n");
+ }
+ disk_cache_remove(cache, sha1);
+ }
+ free(buffer);
+ }
+
+ if (brw->ctx._Shader->Flags & GLSL_CACHE_INFO) {
+ _mesa_sha1_format(buf, sha1);
+ fprintf(stderr, "putting binary in cache: %s\n", buf);
+ }
+
+ disk_cache_put(cache, sha1, binary->data, binary->size);
+}
+
static void
write_program_data(struct brw_context *brw, struct gl_program *prog,
void *key, struct brw_stage_prog_data *prog_data,
@@ -452,7 +486,6 @@ write_program_data(struct brw_context *brw, struct gl_program *prog,
gl_shader_stage stage)
{
unsigned char sha1[20];
- char buf[41];
struct blob *binary = blob_create();
if (!binary)
@@ -518,12 +551,7 @@ write_program_data(struct brw_context *brw, struct gl_program *prog,
ptr_to_uint64_t((void *) prog_data->pull_param[i]));
}
- _mesa_sha1_format(buf, sha1);
- if (brw->ctx._Shader->Flags & GLSL_CACHE_INFO) {
- fprintf(stderr, "putting binary in cache: %s\n", buf);
- }
-
- disk_cache_put(cache, sha1, binary->data, binary->size);
+ cache_binary(brw, binary, cache, sha1);
prog->program_written_to_cache = true;
free(binary);
--
2.14.0
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