pan/bi: Pack BI_BLEND

MRT not yet supported to keep things easy.

Signed-off-by: Alyssa Rosenzweig <[email protected]>
Tested-by: Marge Bot <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4242>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4242>

2 files changed, 18 insertions, 0 deletions

diff --git a/src/panfrost/bifrost/bi_pack.c b/src/panfrost/bifrost/bi_pack.c
index 705a43e3531..2494cb55cdd 100644
--- a/src/panfrost/bifrost/bi_pack.c
+++ b/src/panfrost/bifrost/bi_pack.c
@@ -456,6 +456,20 @@ bi_pack_add_atest(bi_clause *clause, bi_instruction *ins, struct bi_registers *r
 }
 
 static unsigned
+bi_pack_add_blend(bi_instruction *ins, struct bi_registers *regs)
+{
+        struct bifrost_add_inst pack = {
+                .src0 = bi_get_src(ins, regs, 0, false),
+                .op = BIFROST_ADD_OP_BLEND
+        };
+
+        /* TODO: Pack location in uniform_const */
+        assert(ins->blend_location == 0);
+
+        RETURN_PACKED(pack);
+}
+
+static unsigned
 bi_pack_add(bi_clause *clause, bi_bundle bundle, struct bi_registers *regs)
 {
         if (!bundle.add)
@@ -468,7 +482,9 @@ bi_pack_add(bi_clause *clause, bi_bundle bundle, struct bi_registers *regs)
                 return bi_pack_add_atest(clause, bundle.add, regs);
         case BI_BRANCH:
         case BI_CMP:
+                return BIFROST_ADD_NOP;
         case BI_BLEND:
+                return bi_pack_add_blend(bundle.add, regs);
         case BI_BITWISE:
         case BI_CONVERT:
         case BI_DISCARD:
diff --git a/src/panfrost/bifrost/bifrost.h b/src/panfrost/bifrost/bifrost.h
index 9fb063c32af..dac4ad190dd 100644
--- a/src/panfrost/bifrost/bifrost.h
+++ b/src/panfrost/bifrost/bifrost.h
@@ -100,6 +100,8 @@ struct bifrost_fma_inst {
         unsigned op   : 20;
 } __attribute__((packed));
 
+#define BIFROST_ADD_OP_BLEND (0x1952c)
+
 struct bifrost_add_inst {
         unsigned src0 : 3;
         unsigned op   : 17;