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asahi: Add a noshadow debug flag

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This lets us trivially test whether resource shadowing helps or hurts
any given workload.

Signed-off-by: Asahi Lina <lina@asahilina.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/24635>
This commit is contained in:
Asahi Lina 2023-07-22 18:31:45 +09:00 • committed by Marge Bot
parent 5f3d784c6c
commit 175e02baed
2 changed files with 5 additions and 0 deletions
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1
src/asahi/lib/agx_device.h
View file

@ -29,6 +29,7 @@ enum agx_dbg {
AGX_DBG_SYNCTVB = BITFIELD_BIT(13),
AGX_DBG_SMALLTILE = BITFIELD_BIT(14),
AGX_DBG_NOMSAA = BITFIELD_BIT(15),
AGX_DBG_NOSHADOW = BITFIELD_BIT(16),
};
/* Dummy partial declarations, pending real UAPI */

4
src/gallium/drivers/asahi/agx_pipe.c
View file

@ -68,6 +68,7 @@ static const struct debug_named_value agx_debug_options[] = {
{"synctvb", AGX_DBG_SYNCTVB, "Synchronous TVB growth"},
{"smalltile", AGX_DBG_SMALLTILE,"Force 16x16 tiles"},
{"nomsaa", AGX_DBG_NOMSAA, "Force disable MSAA"},
{"noshadow", AGX_DBG_NOSHADOW, "Force disable resource shadowing"},
DEBUG_NAMED_VALUE_END
};
/* clang-format on */
@ -659,6 +660,9 @@ agx_shadow(struct agx_context *ctx, struct agx_resource *rsrc, bool needs_copy)
struct agx_bo *old = rsrc->bo;
unsigned flags = old->flags;
if (dev->debug & AGX_DBG_NOSHADOW)
return false;
/* If a resource is (or could be) shared, shadowing would desync across
* processes. (It's also not what this path is for.)
*/