[Mesa-dev] [PATCH] vl/dri3: handle the case of different GPU(v4.1)
Leo Liu
leo.liu at amd.com
Fri Sep 16 14:14:38 UTC 2016
This Patch is Reviewed-by: Leo Liu <leo.liu at amd.com>
On 09/16/2016 08:51 AM, Nayan Deshmukh wrote:
> In case of prime when rendering is done on GPU other then the
> server GPU, use a seprate linear buffer for each back buffer
> which will be displayed using present extension.
>
> v2: Use a seprate linear buffer for each back buffer (Michel)
> v3: Change variable names and fix coding style (Leo and Emil)
> v4: Use PIPE_BIND_SAMPLER_VIEW for back buffer in case when
> a seprate linear buffer is used (Michel)
> v4.1: remove empty line
>
> Signed-off-by: Nayan Deshmukh <nayan26deshmukh at gmail.com>
> ---
> src/gallium/auxiliary/vl/vl_winsys_dri3.c | 61 ++++++++++++++++++++++++-------
> 1 file changed, 48 insertions(+), 13 deletions(-)
>
> diff --git a/src/gallium/auxiliary/vl/vl_winsys_dri3.c b/src/gallium/auxiliary/vl/vl_winsys_dri3.c
> index 3d596a6..e0aaad8 100644
> --- a/src/gallium/auxiliary/vl/vl_winsys_dri3.c
> +++ b/src/gallium/auxiliary/vl/vl_winsys_dri3.c
> @@ -49,6 +49,7 @@
> struct vl_dri3_buffer
> {
> struct pipe_resource *texture;
> + struct pipe_resource *linear_texture;
>
> uint32_t pixmap;
> uint32_t sync_fence;
> @@ -69,6 +70,8 @@ struct vl_dri3_screen
> xcb_present_event_t eid;
> xcb_special_event_t *special_event;
>
> + struct pipe_context *pipe;
> +
> struct vl_dri3_buffer *back_buffers[BACK_BUFFER_NUM];
> int cur_back;
>
> @@ -82,6 +85,7 @@ struct vl_dri3_screen
> int64_t last_ust, ns_frame, last_msc, next_msc;
>
> bool flushed;
> + bool is_different_gpu;
> };
>
> static void
> @@ -102,6 +106,8 @@ dri3_free_back_buffer(struct vl_dri3_screen *scrn,
> xcb_sync_destroy_fence(scrn->conn, buffer->sync_fence);
> xshmfence_unmap_shm(buffer->shm_fence);
> pipe_resource_reference(&buffer->texture, NULL);
> + if (buffer->linear_texture)
> + pipe_resource_reference(&buffer->linear_texture, NULL);
> FREE(buffer);
> }
>
> @@ -209,7 +215,7 @@ dri3_alloc_back_buffer(struct vl_dri3_screen *scrn)
> xcb_sync_fence_t sync_fence;
> struct xshmfence *shm_fence;
> int buffer_fd, fence_fd;
> - struct pipe_resource templ;
> + struct pipe_resource templ, *pixmap_buffer_texture;
> struct winsys_handle whandle;
> unsigned usage;
>
> @@ -226,8 +232,7 @@ dri3_alloc_back_buffer(struct vl_dri3_screen *scrn)
> goto close_fd;
>
> memset(&templ, 0, sizeof(templ));
> - templ.bind = PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW |
> - PIPE_BIND_SCANOUT | PIPE_BIND_SHARED;
> + templ.bind = PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW;
> templ.format = PIPE_FORMAT_B8G8R8X8_UNORM;
> templ.target = PIPE_TEXTURE_2D;
> templ.last_level = 0;
> @@ -235,16 +240,34 @@ dri3_alloc_back_buffer(struct vl_dri3_screen *scrn)
> templ.height0 = scrn->height;
> templ.depth0 = 1;
> templ.array_size = 1;
> - buffer->texture = scrn->base.pscreen->resource_create(scrn->base.pscreen,
> - &templ);
> - if (!buffer->texture)
> - goto unmap_shm;
>
> + if (scrn->is_different_gpu) {
> + buffer->texture = scrn->base.pscreen->resource_create(scrn->base.pscreen,
> + &templ);
> + if (!buffer->texture)
> + goto unmap_shm;
> +
> + templ.bind |= PIPE_BIND_SCANOUT | PIPE_BIND_SHARED |
> + PIPE_BIND_LINEAR;
> + buffer->linear_texture = scrn->base.pscreen->resource_create(scrn->base.pscreen,
> + &templ);
> + pixmap_buffer_texture = buffer->linear_texture;
> +
> + if (!buffer->linear_texture)
> + goto no_linear_texture;
> + } else {
> + templ.bind |= PIPE_BIND_SCANOUT | PIPE_BIND_SHARED;
> + buffer->texture = scrn->base.pscreen->resource_create(scrn->base.pscreen,
> + &templ);
> + if (!buffer->texture)
> + goto unmap_shm;
> + pixmap_buffer_texture = buffer->texture;
> + }
> memset(&whandle, 0, sizeof(whandle));
> whandle.type= DRM_API_HANDLE_TYPE_FD;
> usage = PIPE_HANDLE_USAGE_EXPLICIT_FLUSH | PIPE_HANDLE_USAGE_READ;
> scrn->base.pscreen->resource_get_handle(scrn->base.pscreen, NULL,
> - buffer->texture, &whandle,
> + pixmap_buffer_texture, &whandle,
> usage);
> buffer_fd = whandle.handle;
> buffer->pitch = whandle.stride;
> @@ -271,6 +294,8 @@ dri3_alloc_back_buffer(struct vl_dri3_screen *scrn)
>
> return buffer;
>
> +no_linear_texture:
> + pipe_resource_reference(&buffer->texture, NULL);
> unmap_shm:
> xshmfence_unmap_shm(shm_fence);
> close_fd:
> @@ -474,6 +499,7 @@ vl_dri3_flush_frontbuffer(struct pipe_screen *screen,
> struct vl_dri3_screen *scrn = (struct vl_dri3_screen *)context_private;
> uint32_t options = XCB_PRESENT_OPTION_NONE;
> struct vl_dri3_buffer *back;
> + struct pipe_box src_box;
>
> back = scrn->back_buffers[scrn->cur_back];
> if (!back)
> @@ -485,6 +511,16 @@ vl_dri3_flush_frontbuffer(struct pipe_screen *screen,
> return;
> }
>
> + if (scrn->is_different_gpu) {
> + u_box_origin_2d(scrn->width, scrn->height, &src_box);
> + scrn->pipe->resource_copy_region(scrn->pipe,
> + back->linear_texture,
> + 0, 0, 0, 0,
> + back->texture,
> + 0, &src_box);
> +
> + scrn->pipe->flush(scrn->pipe, NULL, 0);
> + }
> xshmfence_reset(back->shm_fence);
> back->busy = true;
>
> @@ -638,7 +674,6 @@ vl_dri3_screen_create(Display *display, int screen)
> xcb_dri3_open_reply_t *open_reply;
> xcb_get_geometry_cookie_t geom_cookie;
> xcb_get_geometry_reply_t *geom_reply;
> - int is_different_gpu;
> int fd;
>
> assert(display);
> @@ -677,10 +712,7 @@ vl_dri3_screen_create(Display *display, int screen)
> fcntl(fd, F_SETFD, FD_CLOEXEC);
> free(open_reply);
>
> - fd = loader_get_user_preferred_fd(fd, &is_different_gpu);
> - /* TODO support different GPU */
> - if (is_different_gpu)
> - goto close_fd;
> + fd = loader_get_user_preferred_fd(fd, &scrn->is_different_gpu);
>
> geom_cookie = xcb_get_geometry(scrn->conn, RootWindow(display, screen));
> geom_reply = xcb_get_geometry_reply(scrn->conn, geom_cookie, NULL);
> @@ -699,6 +731,9 @@ vl_dri3_screen_create(Display *display, int screen)
> if (!scrn->base.pscreen)
> goto release_pipe;
>
> + scrn->pipe = scrn->base.pscreen->context_create(scrn->base.pscreen,
> + &scrn->base, 0);
> +
> scrn->base.destroy = vl_dri3_screen_destroy;
> scrn->base.texture_from_drawable = vl_dri3_screen_texture_from_drawable;
> scrn->base.get_dirty_area = vl_dri3_screen_get_dirty_area;
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