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compositor-drm: Only update hw cursor contents when it changes

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We avoid the memcpy, gbm_bo_write and the drmModeSetCursor ioctl per frame.
This commit is contained in:
Kristian Høgsberg
2012-07-18 12:09:58 -04:00
parent 24e4275c30
commit 1f5de35482
1 changed files with 18 additions and 13 deletions
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src/compositor-drm.c
+7 -2
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@@ -685,22 +685,27 @@ drm_output_set_cursor(struct weston_output *output_base,
es->geometry.width > 64 || es->geometry.height > 64) es->geometry.width > 64 || es->geometry.height > 64)
return; return;
if (es->buffer && pixman_region32_not_empty(&es->damage)) {
output->current_cursor ^= 1; output->current_cursor ^= 1;
bo = output->cursor_bo[output->current_cursor]; bo = output->cursor_bo[output->current_cursor];
memset(buf, 0, sizeof buf); memset(buf, 0, sizeof buf);
stride = wl_shm_buffer_get_stride(es->buffer); stride = wl_shm_buffer_get_stride(es->buffer);
s = wl_shm_buffer_get_data(es->buffer); s = wl_shm_buffer_get_data(es->buffer);
for (i = 0; i < es->geometry.height; i++) for (i = 0; i < es->geometry.height; i++)
memcpy(buf + i * 64, s + i * stride, es->geometry.width * 4); memcpy(buf + i * 64, s + i * stride,
es->geometry.width * 4);
weston_log("bo_write now\n");
if (gbm_bo_write(bo, buf, sizeof buf) < 0) if (gbm_bo_write(bo, buf, sizeof buf) < 0)
return; return;
handle = gbm_bo_get_handle(bo).s32; handle = gbm_bo_get_handle(bo).s32;
if (drmModeSetCursor(c->drm.fd, output->crtc_id, handle, 64, 64)) { if (drmModeSetCursor(c->drm.fd,
output->crtc_id, handle, 64, 64)) {
weston_log("failed to set cursor: %n\n"); weston_log("failed to set cursor: %n\n");
return; return;
} }
}
x = es->geometry.x - output->base.x; x = es->geometry.x - output->base.x;
y = es->geometry.y - output->base.y; y = es->geometry.y - output->base.y;