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Revert "minuitwrp: drm: wait for last page flip to complete"

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See https://github.com/omnirom/android_bootable_recovery/issues/219

This reverts commit 34ad728823.

Change-Id: Ia659b49af8206ba74b098aa721099a180762bab5
This commit is contained in:
Simon Shi
2018-06-02 16:18:45 +02:00
committed by Dees Troy
parent bf4f24f227
commit 25b850d652
1 changed files with 1 additions and 20 deletions
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21
minuitwrp/graphics_drm.cpp
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@@ -42,7 +42,6 @@ struct drm_surface {
static drm_surface *drm_surfaces[2];
static int current_buffer;
static bool flip_pending = false;
static GRSurface *draw_buf = NULL;
static drmModeCrtc *main_monitor_crtc;
@@ -481,36 +480,18 @@ static GRSurface* drm_init(minui_backend* backend __unused) {
return draw_buf;
}
static void drm_page_flip_event(int fd, unsigned int frame, unsigned int sec,
unsigned int usec, void *data) {
flip_pending = false;
}
static GRSurface* drm_flip(minui_backend* backend __unused) {
int ret;
drmEventContext ev;
memset(&ev, 0, sizeof(ev));
memcpy(drm_surfaces[current_buffer]->base.data,
draw_buf->data, draw_buf->height * draw_buf->row_bytes);
ev.version = 2;
ev.page_flip_handler = drm_page_flip_event;
/* wait for previous page flip, if any, to complete */
while (flip_pending) {
drmHandleEvent(drm_fd, &ev);
}
ret = drmModePageFlip(drm_fd, main_monitor_crtc->crtc_id,
drm_surfaces[current_buffer]->fb_id, DRM_MODE_PAGE_FLIP_EVENT, NULL);
drm_surfaces[current_buffer]->fb_id, 0, NULL);
if (ret < 0) {
printf("drmModePageFlip failed ret=%d\n", ret);
return NULL;
}
flip_pending = true;
current_buffer = 1 - current_buffer;
return draw_buf;
}