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

Signed-off-by: Matteo Bruni <mbruni@codeweavers.com> Signed-off-by: Henri Verbeet <hverbeet@codeweavers.com> Signed-off-by: Alexandre Julliard <julliard@winehq.org>

wined3d: Optimize scanning changed texture states in wined3d_device_apply_stateblock().
ebc96e32 · Matteo Bruni · Alexandre Julliard · 1cea81d1 · ebc96e32
Commit ebc96e32 authored Feb 28, 2020 by Matteo Bruni Committed by Alexandre Julliard Feb 28, 2020
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device.c dlls/wined3d/device.c +4 -3

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--- a/dlls/wined3d/device.c
+++ b/dlls/wined3d/device.c
@@ -3951,11 +3951,12 @@ void CDECL wined3d_device_apply_stateblock(struct wined3d_device *device,
        }
    }

-    for (i = 0; i < ARRAY_SIZE(state->texture_states); ++i)
+    for (i = 0; i < ARRAY_SIZE(changed->textureState); ++i)
    {
-        for (j = 0; j < ARRAY_SIZE(state->texture_states[i]); ++j)
+        map = changed->textureState[i];
+        while (map)
        {
-            if (changed->textureState[i] & (1u << j))
+            j = wined3d_bit_scan(&map);
            wined3d_device_set_texture_stage_state(device, i, j, state->texture_states[i][j]);
        }
    }