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compositor-drm: dmabuf GBM import

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v2:
- add TODO note about multi-planar import and how we should do it

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
Reviewed-by: Daniel Stone <daniels@collabora.com>
This commit is contained in:
Pekka Paalanen 2014-06-12 17:12:12 +03:00
parent e4d231ecdf
commit bf8cc6f5a1
1 changed files with 29 additions and 4 deletions
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33
src/compositor-drm.c
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@ -921,7 +921,9 @@ drm_output_prepare_overlay_view(struct drm_output *output,
struct weston_compositor *ec = output->base.compositor;
struct drm_backend *b = (struct drm_backend *)ec->backend;
struct weston_buffer_viewport *viewport = &ev->surface->buffer_viewport;
struct wl_resource *buffer_resource;
struct drm_sprite *s;
struct linux_dmabuf_buffer *dmabuf;
int found = 0;
struct gbm_bo *bo;
pixman_region32_t dest_rect, src_rect;
@ -946,11 +948,12 @@ drm_output_prepare_overlay_view(struct drm_output *output,
if (ev->surface->buffer_ref.buffer == NULL)
return NULL;
buffer_resource = ev->surface->buffer_ref.buffer->resource;
if (ev->alpha != 1.0f)
return NULL;
if (wl_shm_buffer_get(ev->surface->buffer_ref.buffer->resource))
if (wl_shm_buffer_get(buffer_resource))
return NULL;
if (!drm_view_transform_supported(ev))
@ -970,9 +973,31 @@ drm_output_prepare_overlay_view(struct drm_output *output,
if (!found)
return NULL;
bo = gbm_bo_import(b->gbm, GBM_BO_IMPORT_WL_BUFFER,
ev->surface->buffer_ref.buffer->resource,
GBM_BO_USE_SCANOUT);
if ((dmabuf = linux_dmabuf_buffer_get(buffer_resource))) {
/* XXX: TODO:
*
* Use AddFB2 directly, do not go via GBM.
* Add support for multiplanar formats.
* Both require refactoring in the DRM-backend to
* support a mix of gbm_bos and drmfbs.
*/
struct gbm_import_fd_data gbm_dmabuf = {
.fd = dmabuf->dmabuf_fd[0],
.width = dmabuf->width,
.height = dmabuf->height,
.stride = dmabuf->stride[0],
.format = dmabuf->format
};
if (dmabuf->n_planes != 1 || dmabuf->offset[0] != 0)
return NULL;
bo = gbm_bo_import(b->gbm, GBM_BO_IMPORT_FD, &gbm_dmabuf,
GBM_BO_USE_SCANOUT);
} else {
bo = gbm_bo_import(b->gbm, GBM_BO_IMPORT_WL_BUFFER,
buffer_resource, GBM_BO_USE_SCANOUT);
}
if (!bo)
return NULL;