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st/va: ensure linear memory for dmabuf 

In order to do zero-copy between two different devices
the memory should not be tiled.

Tested with GStreamer on a laptop that has 2 GPUs:
1- gstvaapidecode:
   HW decoding and dmabuf export with nouveau driver on Nvidia GPU.
2- glimagesink:
   EGLImage imports dmabuf on Intel GPU.

TEST: DRI_PRIME=1 gst-launch vaapidecodebin ! glimagesink

Signed-off-by: Julien Isorce <j.isorce@samsung.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
This commit is contained in:
Julien Isorce 2016-06-14 08:40:33 +01:00
parent 5a87bc7181
commit 1cdb4da1d6
3 changed files with 10 additions and 1 deletions
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2
src/gallium/auxiliary/vl/vl_video_buffer.c
View File

@ -250,7 +250,7 @@ vl_video_buffer_template(struct pipe_resource *templ,
templ->height0 = tmpl->height;
templ->depth0 = depth;
templ->array_size = array_size;
templ->bind = PIPE_BIND_SAMPLER_VIEW | PIPE_BIND_RENDER_TARGET;
templ->bind = PIPE_BIND_SAMPLER_VIEW | PIPE_BIND_RENDER_TARGET | tmpl->bind;
templ->usage = usage;
vl_video_buffer_adjust_size(&templ->width0, &templ->height0, plane,

1
src/gallium/include/pipe/p_video_codec.h
View File

@ -126,6 +126,7 @@ struct pipe_video_buffer
unsigned width;
unsigned height;
bool interlaced;
unsigned bind;
/**
* destroy this video buffer

8
src/gallium/state_trackers/va/surface.c
View File

@ -621,6 +621,14 @@ vlVaCreateSurfaces2(VADriverContextP ctx, unsigned int format,
switch (memory_type) {
case VA_SURFACE_ATTRIB_MEM_TYPE_VA:
/* The application will clear the TILING flag when the surface is
* intended to be exported as dmabuf. Adding shared flag because not
* null memory_attibute means VASurfaceAttribExternalBuffers is used.
*/
if (memory_attibute &&
!(memory_attibute->flags & VA_SURFACE_EXTBUF_DESC_ENABLE_TILING))
templat.bind = PIPE_BIND_LINEAR | PIPE_BIND_SHARED;
surf->buffer = drv->pipe->create_video_buffer(drv->pipe, &templat);
if (!surf->buffer) {
FREE(surf);