wined3d: Use wined3d_bit_scan() in wined3d_enable_clip_distances().

Signed-off-by: Józef Kucia <jkucia@codeweavers.com> Signed-off-by: Henri Verbeet <hverbeet@codeweavers.com> Signed-off-by: Alexandre Julliard <julliard@winehq.org>

wined3d: Use wined3d_bit_scan() in wined3d_enable_clip_distances().
dea7b889 · Józef Kucia · Alexandre Julliard · e8d2feba · dea7b889
Commit dea7b889 authored Feb 06, 2018 by Józef Kucia Committed by Alexandre Julliard Feb 06, 2018
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context.c dlls/wined3d/context.c +6 -6

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--- a/dlls/wined3d/context.c
+++ b/dlls/wined3d/context.c
@@ -2368,16 +2368,16 @@ void context_enable_clip_distances(struct wined3d_context *context, unsigned int
    context->clip_distance_mask = enable_mask;

    enable_mask &= ~current_mask;
-    for (i = 0; enable_mask; enable_mask >>= 1, ++i)
+    while (enable_mask)
    {
-        if (enable_mask & 1)
-            gl_info->gl_ops.gl.p_glEnable(GL_CLIP_DISTANCE0 + i);
+        i = wined3d_bit_scan(&enable_mask);
+        gl_info->gl_ops.gl.p_glEnable(GL_CLIP_DISTANCE0 + i);
    }
    disable_mask &= current_mask;
-    for (i = 0; disable_mask; disable_mask >>= 1, ++i)
+    while (disable_mask)
    {
-        if (disable_mask & 1)
-            gl_info->gl_ops.gl.p_glDisable(GL_CLIP_DISTANCE0 + i);
+        i = wined3d_bit_scan(&disable_mask);
+        gl_info->gl_ops.gl.p_glDisable(GL_CLIP_DISTANCE0 + i);
    }
    checkGLcall("toggle clip distances");
 }