[PATCH 5/5] wined3d: Optimize scanning changed render states in wined3d_device_apply_stateblock().

[Matteo Bruni]

Signed-off-by: Matteo Bruni 
---
 dlls/wined3d/device.c | 13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)

diff --git a/dlls/wined3d/device.c b/dlls/wined3d/device.c
index d8992424797..64b783395e4 100644
--- a/dlls/wined3d/device.c
+++ b/dlls/wined3d/device.c
@@ -3933,18 +3933,21 @@ void CDECL wined3d_device_apply_stateblock(struct wined3d_device *device,
         }
     }

-    for (i = 0; i < ARRAY_SIZE(state->rs); ++i)
+    for (i = 0; i < ARRAY_SIZE(stateblock->changed.renderState); ++i)
     {
-        if (stateblock->changed.renderState[i >> 5] & (1u << (i & 0x1f)))
+        map = stateblock->changed.renderState[i];
+        while (map)
         {
-            if (i == WINED3D_RS_BLENDFACTOR)
+            j = wined3d_bit_scan(&map);
+            idx = i * word_bit_count + j;
+            if (idx == WINED3D_RS_BLENDFACTOR)
             {
                 struct wined3d_color color;
-                wined3d_color_from_d3dcolor(&color, state->rs[i]);
+                wined3d_color_from_d3dcolor(&color, state->rs[idx]);
                 wined3d_device_set_blend_state(device, NULL, &color);
             }
             else
-                wined3d_device_set_render_state(device, i, state->rs[i]);
+                wined3d_device_set_render_state(device, idx, state->rs[idx]);
         }
     }