gallium/hud: add frametime graph (v2)

Thanks for your comment. This version has an additional boolean in the
fps_info struct to distinguish between fps and frame time calculation.
The struct is initialised in the respecting install functions for this
purpose.

Signed-off-by: Marek Olšák <[email protected]>

1 files changed, 33 insertions, 1 deletions

diff --git a/src/gallium/auxiliary/hud/hud_fps.c b/src/gallium/auxiliary/hud/hud_fps.c
index c8438d0f5e3..29110f5575e 100644
--- a/src/gallium/auxiliary/hud/hud_fps.c
+++ b/src/gallium/auxiliary/hud/hud_fps.c
@@ -33,6 +33,7 @@
 #include "util/u_memory.h"
 
 struct fps_info {
+   boolean frametime;
    int frames;
    uint64_t last_time;
 };
@@ -46,7 +47,12 @@ query_fps(struct hud_graph *gr, struct pipe_context *pipe)
    info->frames++;
 
    if (info->last_time) {
-      if (info->last_time + gr->pane->period <= now) {
+      if (info->frametime) {
+         double frametime = ((double)now - (double)info->last_time) / 1000.0;
+         hud_graph_add_value(gr, frametime);
+         info->last_time = now;
+      }
+      else if (info->last_time + gr->pane->period <= now) {
          double fps = ((uint64_t)info->frames) * 1000000 /
                       (double)(now - info->last_time);
          info->frames = 0;
@@ -80,6 +86,8 @@ hud_fps_graph_install(struct hud_pane *pane)
       FREE(gr);
       return;
    }
+   struct fps_info *info = gr->query_data;
+   info->frametime = false;
 
    gr->query_new_value = query_fps;
 
@@ -90,3 +98,27 @@ hud_fps_graph_install(struct hud_pane *pane)
 
    hud_pane_add_graph(pane, gr);
 }
+
+void
+hud_frametime_graph_install(struct hud_pane *pane)
+{
+   struct hud_graph *gr = CALLOC_STRUCT(hud_graph);
+
+   if (!gr)
+      return;
+
+   strcpy(gr->name, "frametime (ms)");
+   gr->query_data = CALLOC_STRUCT(fps_info);
+   if (!gr->query_data) {
+      FREE(gr);
+      return;
+   }
+   struct fps_info *info = gr->query_data;
+   info->frametime = true;
+
+   gr->query_new_value = query_fps;
+
+   gr->free_query_data = free_query_data;
+
+   hud_pane_add_graph(pane, gr);
+}