[Mesa-dev] [PATCH v3] vl/dri3: use external texture as back buffers(v3)
Nayan Deshmukh
nayan26deshmukh at gmail.com
Fri Nov 4 18:45:00 UTC 2016
dri3 allows us to send handle of a texture directly to X
so this patch allows a state tracker to directly send its
texture to X to be used as back buffer and avoids extra
copying
v2: use clip width/height to display a portion of the surface
v3: remove redundant variables, fix wrapping, rename variables
handle vaapi path
Suggested-by: Leo Liu <leo.liu at amd.com>
Signed-off-by: Nayan Deshmukh <nayan26deshmukh at gmail.com>
---
src/gallium/auxiliary/vl/vl_winsys.h | 4 +
src/gallium/auxiliary/vl/vl_winsys_dri3.c | 117 ++++++++++++++++++++++++++----
2 files changed, 108 insertions(+), 13 deletions(-)
diff --git a/src/gallium/auxiliary/vl/vl_winsys.h b/src/gallium/auxiliary/vl/vl_winsys.h
index 26db9f2..908e9c6 100644
--- a/src/gallium/auxiliary/vl/vl_winsys.h
+++ b/src/gallium/auxiliary/vl/vl_winsys.h
@@ -59,6 +59,10 @@ struct vl_screen
void *
(*get_private)(struct vl_screen *vscreen);
+ void
+ (*set_back_texture_from_output)(struct vl_screen *vscreen, struct pipe_resource *buffer,
+ uint32_t width, uint32_t height);
+
struct pipe_screen *pscreen;
struct pipe_loader_device *dev;
};
diff --git a/src/gallium/auxiliary/vl/vl_winsys_dri3.c b/src/gallium/auxiliary/vl/vl_winsys_dri3.c
index 2929928..9d0cd5a 100644
--- a/src/gallium/auxiliary/vl/vl_winsys_dri3.c
+++ b/src/gallium/auxiliary/vl/vl_winsys_dri3.c
@@ -31,6 +31,7 @@
#include <X11/xshmfence.h>
#include <xcb/dri3.h>
#include <xcb/present.h>
+#include <xcb/xfixes.h>
#include "loader.h"
@@ -57,6 +58,7 @@ struct vl_dri3_buffer
bool busy;
uint32_t width, height, pitch;
+ uint32_t clip_width, clip_height;
};
struct vl_dri3_screen
@@ -71,6 +73,8 @@ struct vl_dri3_screen
xcb_special_event_t *special_event;
struct pipe_context *pipe;
+ struct pipe_resource *output_texture;
+ uint32_t clip_width, clip_height;
struct vl_dri3_buffer *back_buffers[BACK_BUFFER_NUM];
int cur_back;
@@ -105,7 +109,8 @@ dri3_free_back_buffer(struct vl_dri3_screen *scrn,
xcb_free_pixmap(scrn->conn, buffer->pixmap);
xcb_sync_destroy_fence(scrn->conn, buffer->sync_fence);
xshmfence_unmap_shm(buffer->shm_fence);
- pipe_resource_reference(&buffer->texture, NULL);
+ if (!scrn->output_texture)
+ pipe_resource_reference(&buffer->texture, NULL);
if (buffer->linear_texture)
pipe_resource_reference(&buffer->linear_texture, NULL);
FREE(buffer);
@@ -236,13 +241,25 @@ dri3_alloc_back_buffer(struct vl_dri3_screen *scrn)
templ.format = PIPE_FORMAT_B8G8R8X8_UNORM;
templ.target = PIPE_TEXTURE_2D;
templ.last_level = 0;
- templ.width0 = scrn->width;
- templ.height0 = scrn->height;
+ if (scrn->output_texture) {
+ buffer->clip_width = (scrn->clip_width) ? scrn->clip_width :
+ scrn->width;
+ buffer->clip_height = (scrn->clip_height) ? scrn->clip_height :
+ scrn->height;
+ templ.width0 = scrn->output_texture->width0;
+ templ.height0 = scrn->output_texture->height0;
+ } else {
+ templ.width0 = scrn->width;
+ templ.height0 = scrn->height;
+ buffer->clip_width = scrn->width;
+ buffer->clip_height = scrn->height;
+ }
templ.depth0 = 1;
templ.array_size = 1;
if (scrn->is_different_gpu) {
- buffer->texture = scrn->base.pscreen->resource_create(scrn->base.pscreen,
+ buffer->texture = (scrn->output_texture) ? scrn->output_texture :
+ scrn->base.pscreen->resource_create(scrn->base.pscreen,
&templ);
if (!buffer->texture)
goto unmap_shm;
@@ -257,7 +274,8 @@ dri3_alloc_back_buffer(struct vl_dri3_screen *scrn)
goto no_linear_texture;
} else {
templ.bind |= PIPE_BIND_SCANOUT | PIPE_BIND_SHARED;
- buffer->texture = scrn->base.pscreen->resource_create(scrn->base.pscreen,
+ buffer->texture = (scrn->output_texture) ? scrn->output_texture :
+ scrn->base.pscreen->resource_create(scrn->base.pscreen,
&templ);
if (!buffer->texture)
goto unmap_shm;
@@ -271,11 +289,14 @@ dri3_alloc_back_buffer(struct vl_dri3_screen *scrn)
usage);
buffer_fd = whandle.handle;
buffer->pitch = whandle.stride;
+ buffer->width = templ.width0;
+ buffer->height = templ.height0;
+
xcb_dri3_pixmap_from_buffer(scrn->conn,
(pixmap = xcb_generate_id(scrn->conn)),
scrn->drawable,
0,
- scrn->width, scrn->height, buffer->pitch,
+ buffer->width, buffer->height, buffer->pitch,
scrn->depth, 32,
buffer_fd);
xcb_dri3_fence_from_fd(scrn->conn,
@@ -287,8 +308,6 @@ dri3_alloc_back_buffer(struct vl_dri3_screen *scrn)
buffer->pixmap = pixmap;
buffer->sync_fence = sync_fence;
buffer->shm_fence = shm_fence;
- buffer->width = scrn->width;
- buffer->height = scrn->height;
xshmfence_trigger(buffer->shm_fence);
@@ -310,6 +329,7 @@ dri3_get_back_buffer(struct vl_dri3_screen *scrn)
{
struct vl_dri3_buffer *buffer;
struct pipe_resource *texture = NULL;
+ bool allocate_new_buffer = false;
assert(scrn);
@@ -318,8 +338,28 @@ dri3_get_back_buffer(struct vl_dri3_screen *scrn)
return NULL;
buffer = scrn->back_buffers[scrn->cur_back];
- if (!buffer || buffer->width != scrn->width ||
- buffer->height != scrn->height) {
+ /* This is normal case when our buffer is smaller
+ * than the screen this will be same for external
+ * texture
+ */
+ if (scrn->output_texture) {
+ if (!buffer || buffer->width < scrn->width ||
+ buffer->height < scrn->height)
+ allocate_new_buffer = true;
+ } else {
+ if (!buffer || buffer->width != scrn->width ||
+ buffer->height != scrn->height)
+ allocate_new_buffer = true;
+ }
+
+ /* In case of a single gpu we need to get the
+ * handle and pixmap for the texture that is set
+ */
+ if (buffer && scrn->output_texture &&
+ !scrn->is_different_gpu)
+ allocate_new_buffer = true;
+
+ if (allocate_new_buffer) {
struct vl_dri3_buffer *new_buffer;
new_buffer = dri3_alloc_back_buffer(scrn);
@@ -329,9 +369,18 @@ dri3_get_back_buffer(struct vl_dri3_screen *scrn)
if (buffer)
dri3_free_back_buffer(scrn, buffer);
- vl_compositor_reset_dirty_area(&scrn->dirty_areas[scrn->cur_back]);
+ if (!scrn->output_texture)
+ vl_compositor_reset_dirty_area(&scrn->dirty_areas[scrn->cur_back]);
buffer = new_buffer;
scrn->back_buffers[scrn->cur_back] = buffer;
+ } else if (scrn->output_texture) {
+ /* In case of different gpu we can reuse the linear
+ * texture so we only need to set the external
+ * texture for copying
+ */
+ buffer->texture = scrn->output_texture;
+ buffer->clip_width = scrn->clip_width;
+ buffer->clip_height = scrn->clip_height;
}
pipe_resource_reference(&texture, buffer->texture);
@@ -500,6 +549,8 @@ vl_dri3_flush_frontbuffer(struct pipe_screen *screen,
uint32_t options = XCB_PRESENT_OPTION_NONE;
struct vl_dri3_buffer *back;
struct pipe_box src_box;
+ xcb_xfixes_region_t region;
+ xcb_rectangle_t rectangle;
back = scrn->back_buffers[scrn->cur_back];
if (!back)
@@ -511,8 +562,16 @@ vl_dri3_flush_frontbuffer(struct pipe_screen *screen,
return;
}
+ rectangle.x = 0;
+ rectangle.y = 0;
+ rectangle.width = back->clip_width;
+ rectangle.height = back->clip_height;
+
+ region = xcb_generate_id(scrn->conn);
+ xcb_xfixes_create_region(scrn->conn, region, 2, &rectangle);
+
if (scrn->is_different_gpu) {
- u_box_origin_2d(scrn->width, scrn->height, &src_box);
+ u_box_origin_2d(back->width, back->height, &src_box);
scrn->pipe->resource_copy_region(scrn->pipe,
back->linear_texture,
0, 0, 0, 0,
@@ -528,7 +587,7 @@ vl_dri3_flush_frontbuffer(struct pipe_screen *screen,
scrn->drawable,
back->pixmap,
(uint32_t)(++scrn->send_sbc),
- 0, 0, 0, 0,
+ 0, region, 0, 0,
None, None,
back->sync_fence,
options,
@@ -627,6 +686,20 @@ vl_dri3_screen_get_private(struct vl_screen *vscreen)
}
static void
+vl_dri3_screen_set_back_texture_from_output(struct vl_screen *vscreen,
+ struct pipe_resource *buffer,
+ uint32_t width, uint32_t height)
+{
+ struct vl_dri3_screen *scrn = (struct vl_dri3_screen *)vscreen;
+
+ assert(scrn);
+
+ scrn->output_texture = buffer;
+ scrn->clip_width = width;
+ scrn->clip_height = height;
+}
+
+static void
vl_dri3_screen_destroy(struct vl_screen *vscreen)
{
struct vl_dri3_screen *scrn = (struct vl_dri3_screen *)vscreen;
@@ -675,6 +748,9 @@ 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;
+ xcb_xfixes_query_version_cookie_t xfixes_cookie;
+ xcb_xfixes_query_version_reply_t *xfixes_reply;
+ xcb_generic_error_t *error;
int fd;
assert(display);
@@ -689,12 +765,26 @@ vl_dri3_screen_create(Display *display, int screen)
xcb_prefetch_extension_data(scrn->conn , &xcb_dri3_id);
xcb_prefetch_extension_data(scrn->conn, &xcb_present_id);
+ xcb_prefetch_extension_data (scrn->conn, &xcb_xfixes_id);
extension = xcb_get_extension_data(scrn->conn, &xcb_dri3_id);
if (!(extension && extension->present))
goto free_screen;
extension = xcb_get_extension_data(scrn->conn, &xcb_present_id);
if (!(extension && extension->present))
goto free_screen;
+ extension = xcb_get_extension_data(scrn->conn, &xcb_xfixes_id);
+ if (!(extension && extension->present))
+ goto free_screen;
+
+ xfixes_cookie = xcb_xfixes_query_version(scrn->conn, XCB_XFIXES_MAJOR_VERSION,
+ XCB_XFIXES_MINOR_VERSION);
+ xfixes_reply = xcb_xfixes_query_version_reply(scrn->conn, xfixes_cookie, &error);
+ if (!xfixes_reply || error || xfixes_reply->major_version < 2) {
+ free(error);
+ free(xfixes_reply);
+ goto free_screen;
+ }
+ free(xfixes_reply);
open_cookie = xcb_dri3_open(scrn->conn, RootWindow(display, screen), None);
open_reply = xcb_dri3_open_reply(scrn->conn, open_cookie, NULL);
@@ -744,6 +834,7 @@ vl_dri3_screen_create(Display *display, int screen)
scrn->base.set_next_timestamp = vl_dri3_screen_set_next_timestamp;
scrn->base.get_private = vl_dri3_screen_get_private;
scrn->base.pscreen->flush_frontbuffer = vl_dri3_flush_frontbuffer;
+ scrn->base.set_back_texture_from_output = vl_dri3_screen_set_back_texture_from_output;
return &scrn->base;
--
2.7.4
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