Mesa (main): vc4: implement resource_get_param
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Thu Aug 19 13:33:26 UTC 2021
Module: Mesa
Branch: main
Commit: b1fbceac6f840172e2aeae929072ed92a4c47eb0
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=b1fbceac6f840172e2aeae929072ed92a4c47eb0
Author: Simon Ser <contact at emersion.fr>
Date: Sat Aug 14 14:07:28 2021 +0200
vc4: implement resource_get_param
Prior to this commit, the stride, offset and modifier were fetched
via WINSYS_HANDLE_TYPE_KMS. However we can't make such a query
succeed if the buffer couldn't be imported to the KMS device.
Instead, implement the resource_get_param hook to allow users to
fetch this information without WINSYS_HANDLE_TYPE_KMS.
A tiny helper function is introduced to compute the modifier of a
resource.
Signed-off-by: Simon Ser <contact at emersion.fr>
Fixes: 7bcb22363935 ("v3d, vc4: Fix dmabuf import for non-scanout buffers")
Reported-by: Roman Stratiienko <r.stratiienko at gmail.com>
Reviewed-by: Daniel Stone <daniels at collabora.com>
Reviewed-by: Jose Maria Casanova Crespo <jmcasanova at igalia.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/12370>
---
src/gallium/drivers/vc4/vc4_resource.c | 40 +++++++++++++++++++++++++++++-----
1 file changed, 35 insertions(+), 5 deletions(-)
diff --git a/src/gallium/drivers/vc4/vc4_resource.c b/src/gallium/drivers/vc4/vc4_resource.c
index af61c4860b8..052588e49f6 100644
--- a/src/gallium/drivers/vc4/vc4_resource.c
+++ b/src/gallium/drivers/vc4/vc4_resource.c
@@ -283,6 +283,15 @@ vc4_resource_destroy(struct pipe_screen *pscreen,
free(rsc);
}
+static uint64_t
+vc4_resource_modifier(struct vc4_resource *rsc)
+{
+ if (rsc->tiled)
+ return DRM_FORMAT_MOD_BROADCOM_VC4_T_TILED;
+ else
+ return DRM_FORMAT_MOD_LINEAR;
+}
+
static bool
vc4_resource_get_handle(struct pipe_screen *pscreen,
struct pipe_context *pctx,
@@ -295,6 +304,7 @@ vc4_resource_get_handle(struct pipe_screen *pscreen,
whandle->stride = rsc->slices[0].stride;
whandle->offset = 0;
+ whandle->modifier = vc4_resource_modifier(rsc);
/* If we're passing some reference to our BO out to some other part of
* the system, then we can't do any optimizations about only us being
@@ -302,11 +312,6 @@ vc4_resource_get_handle(struct pipe_screen *pscreen,
*/
rsc->bo->private = false;
- if (rsc->tiled)
- whandle->modifier = DRM_FORMAT_MOD_BROADCOM_VC4_T_TILED;
- else
- whandle->modifier = DRM_FORMAT_MOD_LINEAR;
-
switch (whandle->type) {
case WINSYS_HANDLE_TYPE_SHARED:
if (screen->ro) {
@@ -334,6 +339,30 @@ vc4_resource_get_handle(struct pipe_screen *pscreen,
return false;
}
+static bool
+vc4_resource_get_param(struct pipe_screen *pscreen,
+ struct pipe_context *pctx, struct pipe_resource *prsc,
+ unsigned plane, unsigned layer, unsigned level,
+ enum pipe_resource_param param,
+ unsigned usage, uint64_t *value)
+{
+ struct vc4_resource *rsc = vc4_resource(prsc);
+
+ switch (param) {
+ case PIPE_RESOURCE_PARAM_STRIDE:
+ *value = rsc->slices[level].stride;
+ return true;
+ case PIPE_RESOURCE_PARAM_OFFSET:
+ *value = 0;
+ return true;
+ case PIPE_RESOURCE_PARAM_MODIFIER:
+ *value = vc4_resource_modifier(rsc);
+ return true;
+ default:
+ return false;
+ }
+}
+
static void
vc4_setup_slices(struct vc4_resource *rsc, const char *caller)
{
@@ -1119,6 +1148,7 @@ vc4_resource_screen_init(struct pipe_screen *pscreen)
vc4_resource_create_with_modifiers;
pscreen->resource_from_handle = vc4_resource_from_handle;
pscreen->resource_get_handle = vc4_resource_get_handle;
+ pscreen->resource_get_param = vc4_resource_get_param;
pscreen->resource_destroy = vc4_resource_destroy;
pscreen->transfer_helper = u_transfer_helper_create(&transfer_vtbl,
false, false,
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