wined3d: Optimize scanning changed clip planes in wined3d_device_apply_stateblock().

dlls/wined3d/device.c

@@ -4022,10 +4022,11 @@ void CDECL wined3d_device_apply_stateblock(struct wined3d_device *device,
         wined3d_device_set_texture(device, stage, state->textures[i]);
     }
 
-    for (i = 0; i < ARRAY_SIZE(state->clip_planes); ++i)
+    map = changed->clipplane;
+    while (map)
     {
-        if (changed->clipplane & (1u << i))
-            wined3d_device_set_clip_plane(device, i, &state->clip_planes[i]);
+        i = wined3d_bit_scan(&map);
+        wined3d_device_set_clip_plane(device, i, &state->clip_planes[i]);
     }
 
     memset(&stateblock->changed, 0, sizeof(stateblock->changed));

dlls/wined3d/wined3d_private.h

@@ -3926,7 +3926,7 @@ struct wined3d_saved_states
     DWORD renderState[(WINEHIGHEST_RENDER_STATE >> 5) + 1];
     DWORD textureState[WINED3D_MAX_TEXTURES];   /* WINED3D_HIGHEST_TEXTURE_STATE + 1, 18 */
     WORD samplerState[WINED3D_MAX_COMBINED_SAMPLERS];   /* WINED3D_HIGHEST_SAMPLER_STATE + 1, 14 */
-    DWORD clipplane;                            /* WINED3D_MAX_USER_CLIP_PLANES, 32 */
+    DWORD clipplane;                            /* WINED3D_MAX_CLIP_DISTANCES, 8 */
     DWORD textures : 20;                        /* WINED3D_MAX_COMBINED_SAMPLERS, 20 */
     DWORD indices : 1;
     DWORD material : 1;