These bindings change the resulting binary so they are just as
important as the shader source.
---
src/compiler/glsl/shader_cache.cpp | 21 +++++++++++++++++++++
1 file changed, 21 insertions(+)
diff --git a/src/compiler/glsl/shader_cache.cpp
b/src/compiler/glsl/shader_cache.cpp
index 8b50ff6..7e6e9ca 100644
--- a/src/compiler/glsl/shader_cache.cpp
+++ b/src/compiler/glsl/shader_cache.cpp
@@ -389,6 +389,13 @@ read_shader_metadata(struct blob_reader *metadata,
}
}
+static void
+create_binding_str(const char *key, unsigned value, void *closure)
+{
+ char **bindings_str = (char **) closure;
+ ralloc_asprintf_append(bindings_str, "%s:%u,", key, value);
+}
+
void
shader_cache_write_program_metadata(struct gl_context *ctx,
struct gl_shader_program *prog)
@@ -443,6 +450,7 @@ shader_cache_read_program_metadata(struct gl_context *ctx,
{
const char *stage_name[] = { "vs", "tcs", "tes", "gs", "fs", "cs" };
char buf[256], sha1buf[41];
+ unsigned char sha1[20];
int offset = 0;
uint8_t *buffer;
struct program_cache *cache;
@@ -463,6 +471,19 @@ shader_cache_read_program_metadata(struct gl_context *ctx,
}
}
+ char *bindings_str = ralloc_strdup(NULL, "vb: ");
+ prog->AttributeBindings->iterate(create_binding_str, &bindings_str);
+ ralloc_strcat(&bindings_str, "fb: ");
+ prog->FragDataBindings->iterate(create_binding_str, &bindings_str);
+ ralloc_strcat(&bindings_str, "fbi: ");
+ prog->FragDataIndexBindings->iterate(create_binding_str, &bindings_str);
+ _mesa_sha1_compute(bindings_str, strlen(bindings_str), sha1);
+ ralloc_free(bindings_str);
+
+ offset += snprintf(buf + offset, sizeof(buf) - offset,
+ "bindings: %s\n",
+ _mesa_sha1_format(sha1buf, sha1));
+
for (unsigned i = 0; i < prog->NumShaders; i++) {
if (prog->Shaders[i]->Source == NULL)
return false;
--
2.5.5
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