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-rw-r--r--src/gallium/auxiliary/tgsi/tgsi_ureg.c22
-rw-r--r--src/gallium/auxiliary/tgsi/tgsi_ureg.h3
2 files changed, 25 insertions, 0 deletions
diff --git a/src/gallium/auxiliary/tgsi/tgsi_ureg.c b/src/gallium/auxiliary/tgsi/tgsi_ureg.c
index 61cd3bf407..5526a5d034 100644
--- a/src/gallium/auxiliary/tgsi/tgsi_ureg.c
+++ b/src/gallium/auxiliary/tgsi/tgsi_ureg.c
@@ -72,6 +72,7 @@ struct ureg_tokens {
#define UREG_MAX_IMMEDIATE 32
#define UREG_MAX_TEMP 256
#define UREG_MAX_ADDR 2
+#define UREG_MAX_LOOP 1
#define UREG_MAX_PRED 1
#define DOMAIN_DECL 0
@@ -117,6 +118,7 @@ struct ureg_program
unsigned nr_addrs;
unsigned nr_preds;
+ unsigned nr_loops;
unsigned nr_instructions;
struct ureg_tokens domain[2];
@@ -417,6 +419,19 @@ struct ureg_dst ureg_DECL_address( struct ureg_program *ureg )
return ureg_dst_register( TGSI_FILE_ADDRESS, 0 );
}
+/* Allocate a new loop register.
+ */
+struct ureg_dst
+ureg_DECL_loop(struct ureg_program *ureg)
+{
+ if (ureg->nr_loops < UREG_MAX_LOOP) {
+ return ureg_dst_register(TGSI_FILE_LOOP, ureg->nr_loops++);
+ }
+
+ assert(0);
+ return ureg_dst_register(TGSI_FILE_LOOP, 0);
+}
+
/* Allocate a new predicate register.
*/
struct ureg_dst
@@ -1015,6 +1030,13 @@ static void emit_decls( struct ureg_program *ureg )
0, ureg->nr_addrs );
}
+ if (ureg->nr_loops) {
+ emit_decl_range(ureg,
+ TGSI_FILE_LOOP,
+ 0,
+ ureg->nr_loops);
+ }
+
if (ureg->nr_preds) {
emit_decl_range(ureg,
TGSI_FILE_PREDICATE,
diff --git a/src/gallium/auxiliary/tgsi/tgsi_ureg.h b/src/gallium/auxiliary/tgsi/tgsi_ureg.h
index dae4291194..94cc70a208 100644
--- a/src/gallium/auxiliary/tgsi/tgsi_ureg.h
+++ b/src/gallium/auxiliary/tgsi/tgsi_ureg.h
@@ -158,6 +158,9 @@ struct ureg_dst
ureg_DECL_address( struct ureg_program * );
struct ureg_dst
+ureg_DECL_loop( struct ureg_program * );
+
+struct ureg_dst
ureg_DECL_predicate(struct ureg_program *);
/* Supply an index to the sampler declaration as this is the hook to