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iris: handle depth-stencil import with a wrapper function

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This is similar to u_transfer_helper wrap but implemented in
the driver as the layout between drivers can vary.

v2: remove else, simplify (Rohan, Eleni)
v3: add hiz surface support when importing depth buffer
v4: use iris_resource_configure_aux_offsets for setting
    aux offsets for depth
v5: introduce helper for configuring imported memobj aux
    offsets and utilize that
v6: simplify, remove aux support for now
v7: cleanups, fix offset calculation (Nanley)

Signed-off-by: Tapani Pälli <tapani.palli@intel.com>
Reviewed-by: Nanley Chery <nanley.g.chery@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/10609>
This commit is contained in:
Tapani Pälli
2021-06-03 15:22:24 +03:00
parent 5f7df5df0d
commit d75502be33
1 changed files with 45 additions and 1 deletions
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src/gallium/drivers/iris/iris_resource.c
+45 -1
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@@ -1279,6 +1279,50 @@ iris_resource_from_memobj(struct pipe_screen *pscreen,
return &res->base.b;
}
/* Handle combined depth/stencil with memory objects.
*
* This function is modeled after u_transfer_helper_resource_create.
*/
static struct pipe_resource *
iris_resource_from_memobj_wrapper(struct pipe_screen *pscreen,
const struct pipe_resource *templ,
struct pipe_memory_object *pmemobj,
uint64_t offset)
{
enum pipe_format format = templ->format;
/* Normal case, no special handling: */
if (!(util_format_is_depth_and_stencil(format)))
return iris_resource_from_memobj(pscreen, templ, pmemobj, offset);
struct pipe_resource t = *templ;
t.format = util_format_get_depth_only(format);
struct pipe_resource *prsc =
iris_resource_from_memobj(pscreen, &t, pmemobj, offset);
if (!prsc)
return NULL;
struct iris_resource *res = (struct iris_resource *) prsc;
/* Stencil offset in the buffer without aux. */
uint64_t s_offset = offset +
ALIGN(res->surf.size_B, res->surf.alignment_B);
prsc->format = format; /* frob the format back to the "external" format */
t.format = PIPE_FORMAT_S8_UINT;
struct pipe_resource *stencil =
iris_resource_from_memobj(pscreen, &t, pmemobj, s_offset);
if (!stencil) {
iris_resource_destroy(pscreen, prsc);
return NULL;
}
iris_resource_set_separate_stencil(prsc, stencil);
return prsc;
}
static void
iris_flush_resource(struct pipe_context *ctx, struct pipe_resource *resource)
{
@@ -2380,7 +2424,7 @@ iris_init_screen_resource_functions(struct pipe_screen *pscreen)
pscreen->resource_create = u_transfer_helper_resource_create;
pscreen->resource_from_user_memory = iris_resource_from_user_memory;
pscreen->resource_from_handle = iris_resource_from_handle;
pscreen->resource_from_memobj = iris_resource_from_memobj;
pscreen->resource_from_memobj = iris_resource_from_memobj_wrapper;
pscreen->resource_get_handle = iris_resource_get_handle;
pscreen->resource_get_param = iris_resource_get_param;
pscreen->resource_destroy = u_transfer_helper_resource_destroy;