Types of metric counts for pixmaps
#include <screen/screen.h>
enum { SCREEN_PIXMAP_METRIC_BLIT_COUNT = 0, SCREEN_PIXMAP_METRIC_BLIT_PIXELS = 1, SCREEN_PIXMAP_METRIC_BLIT_READS = 2, SCREEN_PIXMAP_METRIC_BLIT_WRITES = 3 };
The number of bytes read is an estimation calculated based on the number of pixels affected by the blit requests.
The number of bytes written is an estimation calculated based on the number of pixels affected by the blit requests.
The metrics are on a per pixmap basis and the counts are reset after being queried. That is, the counts are reset to 0 after you call screen_get_pixmap_property_llv() to retrieve SCREEN_PROPERTY_METRICS.