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lib/display: Wait for a vblank after SetPlane()

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Let's be testing friendly and gently wait for the next vblank before
returning from commit() when needed.

After igt_display_commit() one can safely look at the CRC.

Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
This commit is contained in:
Damien Lespiau 2014-02-06 21:18:28 +00:00
parent da0f1cf570
commit fb146aa782
2 changed files with 11 additions and 2 deletions
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8
lib/igt_kms.c
View File

@ -1175,11 +1175,13 @@ static int igt_cursor_commit(igt_plane_t *plane, igt_output_t *output)
static int igt_drm_plane_commit(igt_plane_t *plane, igt_output_t *output)
{
igt_display_t *display = output->display;
igt_pipe_t *pipe;
uint32_t fb_id, crtc_id;
int ret;
fb_id = igt_plane_get_fd_id(plane);
crtc_id = output->config.crtc->crtc_id;
pipe = igt_output_get_driving_pipe(output);
if (plane->fb_changed && fb_id == 0) {
LOG(display,
@ -1228,6 +1230,7 @@ static int igt_drm_plane_commit(igt_plane_t *plane, igt_output_t *output)
plane->fb_changed = false;
plane->position_changed = false;
pipe->need_wait_for_vblank = true;
}
return 0;
@ -1347,6 +1350,11 @@ static int igt_output_commit(igt_output_t *output)
igt_plane_commit(plane, output);
}
if (pipe->need_wait_for_vblank) {
igt_wait_for_vblank(display->drm_fd, pipe->pipe);
pipe->need_wait_for_vblank = false;
}
return 0;
}

5
lib/igt_kms.h
View File

@ -136,8 +136,9 @@ typedef struct {
struct igt_pipe {
igt_display_t *display;
enum pipe pipe;
unsigned int need_set_crtc : 1;
unsigned int need_set_cursor : 1;
unsigned int need_set_crtc : 1;
unsigned int need_set_cursor : 1;
unsigned int need_wait_for_vblank : 1;
#define IGT_MAX_PLANES 4
int n_planes;
igt_plane_t planes[IGT_MAX_PLANES];