panfrost: Fix collision in the indirect draw shader table

Min/max index search shaders are different for the !primitive_restart
and primitive_restart. We need to add entries for the primitive restart
cases otherwise we might retrieve a wrong shader from the cache.

Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/12589>

src/gallium/drivers/panfrost/ci/deqp-panfrost-g52-fails.txt

@@ -1,5 +1,4 @@
 # The shader assisted indirect draw path is buggy. The shader assisted indirect
 # draw path is disabled outside of CI due to these conformance issues.
-KHR-GLES31.core.draw_indirect.advanced-primitiveRestart-elements,Fail
 KHR-GLES31.core.draw_indirect.advanced-twoPass-transformFeedback-arrays,Fail
 KHR-GLES31.core.draw_indirect.advanced-twoPass-transformFeedback-elements,Fail

src/panfrost/lib/pan_device.h

@@ -93,6 +93,9 @@ enum pan_indirect_draw_flags {
         PAN_INDIRECT_DRAW_MIN_MAX_SEARCH_1B_INDEX = PAN_INDIRECT_DRAW_LAST_FLAG << 1,
         PAN_INDIRECT_DRAW_MIN_MAX_SEARCH_2B_INDEX,
         PAN_INDIRECT_DRAW_MIN_MAX_SEARCH_4B_INDEX,
+        PAN_INDIRECT_DRAW_MIN_MAX_SEARCH_1B_INDEX_PRIM_RESTART,
+        PAN_INDIRECT_DRAW_MIN_MAX_SEARCH_2B_INDEX_PRIM_RESTART,
+        PAN_INDIRECT_DRAW_MIN_MAX_SEARCH_3B_INDEX_PRIM_RESTART,
         PAN_INDIRECT_DRAW_NUM_SHADERS,
 };
 

src/panfrost/lib/pan_indirect_draw.c

@@ -1076,7 +1076,9 @@ get_shader_id(unsigned flags, unsigned index_size, bool index_min_max_search)
                 return flags;
         }
 
-        return PAN_INDIRECT_DRAW_MIN_MAX_SEARCH_1B_INDEX +
+        return ((flags & PAN_INDIRECT_DRAW_PRIMITIVE_RESTART) ?
+                PAN_INDIRECT_DRAW_MIN_MAX_SEARCH_1B_INDEX_PRIM_RESTART :
+                PAN_INDIRECT_DRAW_MIN_MAX_SEARCH_1B_INDEX) +
                util_logbase2(index_size);
 }