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broadcom/vc4: Allow importing linear BOs with arbitrary offset/stride. 

This is part of supporting YUV textures -- MMAL will be handing us a
single GEM BO with the planes at offsets within it, and MMAL-decided
stride.
This commit is contained in:
Eric Anholt 2018-02-06 17:42:44 +00:00
parent 978b884afc
commit 0c1dd9dee0
1 changed files with 25 additions and 8 deletions
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33
src/gallium/drivers/vc4/vc4_resource.c
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@ -708,13 +708,6 @@ vc4_resource_from_handle(struct pipe_screen *pscreen,
if (!rsc)
return NULL;
if (whandle->offset != 0) {
fprintf(stderr,
"Attempt to import unsupported winsys offset %u\n",
whandle->offset);
return NULL;
}
switch (whandle->type) {
case DRM_API_HANDLE_TYPE_SHARED:
rsc->bo = vc4_bo_open_name(screen,
@ -766,6 +759,28 @@ vc4_resource_from_handle(struct pipe_screen *pscreen,
rsc->vc4_format = get_resource_texture_format(prsc);
vc4_setup_slices(rsc, "import");
if (whandle->offset != 0) {
if (rsc->tiled) {
fprintf(stderr,
"Attempt to import unsupported "
"winsys offset %u\n",
whandle->offset);
goto fail;
}
rsc->slices[0].offset += whandle->offset;
if (rsc->slices[0].offset + rsc->slices[0].size >
rsc->bo->size) {
fprintf(stderr, "Attempt to import "
"with overflowing offset (%d + %d > %d)\n",
whandle->offset,
rsc->slices[0].size,
rsc->bo->size);
goto fail;
}
}
if (screen->ro) {
/* Make sure that renderonly has a handle to our buffer in the
* display's fd, so that a later renderonly_get_handle()
@ -779,7 +794,7 @@ vc4_resource_from_handle(struct pipe_screen *pscreen,
goto fail;
}
if (whandle->stride != slice->stride) {
if (rsc->tiled && whandle->stride != slice->stride) {
static bool warned = false;
if (!warned) {
warned = true;
@ -792,6 +807,8 @@ vc4_resource_from_handle(struct pipe_screen *pscreen,
slice->stride);
}
goto fail;
} else if (!rsc->tiled) {
slice->stride = whandle->stride;
}
return prsc;