[Mesa-dev] [PATCH v3] vl/dri3: handle the case of different GPU
Nayan Deshmukh
nayan26deshmukh at gmail.com
Fri Sep 9 15:49:11 UTC 2016
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)
Signed-off-by: Nayan Deshmukh <nayan26deshmukh at gmail.com>
---
src/gallium/auxiliary/vl/vl_winsys_dri3.c | 63 ++++++++++++++++++++++++-------
1 file changed, 50 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..3607f86 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;
templ.format = PIPE_FORMAT_B8G8R8X8_UNORM;
templ.target = PIPE_TEXTURE_2D;
templ.last_level = 0;
@@ -235,16 +240,36 @@ 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_SAMPLER_VIEW | 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_SAMPLER_VIEW | 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 +296,8 @@ 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 +501,7 @@ 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 +513,16 @@ 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 +676,6 @@ 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 +714,7 @@ 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 +733,9 @@ 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;
--
2.7.4
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