[Mesa-dev] [PATCH 06/18] panfrost/midgard/disasm: LOD immediate/register select

[Alyssa Rosenzweig]

Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig at collabora.com>
---
 src/gallium/drivers/panfrost/midgard/disassemble.c | 8 ++++++--
 src/gallium/drivers/panfrost/midgard/midgard.h     | 8 +++++++-
 2 files changed, 13 insertions(+), 3 deletions(-)

diff --git a/src/gallium/drivers/panfrost/midgard/disassemble.c b/src/gallium/drivers/panfrost/midgard/disassemble.c
index 58a07e4535c..10729ca122b 100644
--- a/src/gallium/drivers/panfrost/midgard/disassemble.c
+++ b/src/gallium/drivers/panfrost/midgard/disassemble.c
@@ -1139,8 +1139,12 @@ print_texture_word(uint32_t *word, unsigned tabs)
                 printf(",");
         }
 
-        if (texture->bias)
-                printf("%f, ", texture->bias / 256.0f);
+        if (texture->lod_register) {
+                /* TODO: Decode */
+                printf("lod/bias/grad reg 0x%X, ", texture->bias);
+        } else if (texture->bias) {
+                printf("%f /* %d */, ", texture->bias / 256.0f, texture->bias);
+        }
 
         printf("\n");
 
diff --git a/src/gallium/drivers/panfrost/midgard/midgard.h b/src/gallium/drivers/panfrost/midgard/midgard.h
index 743fdf3811a..dbcee0f53b5 100644
--- a/src/gallium/drivers/panfrost/midgard/midgard.h
+++ b/src/gallium/drivers/panfrost/midgard/midgard.h
@@ -517,7 +517,13 @@ __attribute__((__packed__))
         unsigned cont  : 1;
         unsigned last  : 1;
 
-        unsigned format    : 5;
+        unsigned format    : 4;
+
+        /* Is a register used to specify the
+         * LOD/bias/offset? If set, use the `bias` field as
+         * a register index. If clear, use the `bias` field
+         * as an immediate. */
+        unsigned lod_register : 1;
 
         /* Is a register used to specify an offset? If set, use the
          * offset_reg_* fields to encode this, duplicated for each of the
-- 
2.20.1