Matteo Bruni : wined3d: Optimize scanning changed transform states in wined3d_device_apply_stateblock().

[Alexandre Julliard]

Module: wine
Branch: master
Commit: fd816f263ea246a963b9bf7aae86a096764b98d1
URL:    https://source.winehq.org/git/wine.git/?a=commit;h=fd816f263ea246a963b9bf7aa...

Author: Matteo Bruni 
Date:   Thu Feb 27 13:31:12 2020 +0100

wined3d: Optimize scanning changed transform states in wined3d_device_apply_stateblock().

Signed-off-by: Matteo Bruni 
Signed-off-by: Henri Verbeet 
Signed-off-by: Alexandre Julliard

---

dlls/wined3d/device.c | 14 ++++++++++----
 1 file changed, 10 insertions(+), 4 deletions(-)

diff --git a/dlls/wined3d/device.c b/dlls/wined3d/device.c
index fa675f5729..64cc80780d 100644
--- a/dlls/wined3d/device.c
+++ b/dlls/wined3d/device.c
@@ -3837,10 +3837,11 @@ void CDECL wined3d_device_apply_stateblock(struct wined3d_device *device,
 {
     const struct wined3d_stateblock_state *state = &stateblock->stateblock_state;
     const struct wined3d_saved_states *changed = &stateblock->changed;
+    const unsigned int word_bit_count = sizeof(DWORD) * CHAR_BIT;
     struct wined3d_blend_state *blend_state;
+    unsigned int i, j, start, idx;
     struct wined3d_color colour;
     struct wined3d_range range;
-    unsigned int i, j, start;
     BOOL set_blend_state;
     DWORD map;

@@ -3968,10 +3969,15 @@ void CDECL wined3d_device_apply_stateblock(struct wined3d_device *device,
         }
     }

-    for (i = 0; i < ARRAY_SIZE(state->transforms); ++i)
+    for (i = 0; i < ARRAY_SIZE(changed->transform); ++i)
     {
-        if (wined3d_bitmap_is_set(changed->transform, i))
-            wined3d_device_set_transform(device, i, &state->transforms[i]);
+        map = changed->transform[i];
+        while (map)
+        {
+            j = wined3d_bit_scan(&map);
+            idx = i * word_bit_count + j;
+            wined3d_device_set_transform(device, idx, &state->transforms[idx]);
+        }
     }

if (changed->indices)