[PATCH 6/8] wined3d: Use wined3d_bit_scan() in find_draw_buffers_mask().

[Józef Kucia]

Signed-off-by: Józef Kucia 
---
 dlls/wined3d/context.c | 12 +++++-------
 1 file changed, 5 insertions(+), 7 deletions(-)

diff --git a/dlls/wined3d/context.c b/dlls/wined3d/context.c
index 534f05a9f0bd..6007c2b2556b 100644
--- a/dlls/wined3d/context.c
+++ b/dlls/wined3d/context.c
@@ -3128,7 +3128,7 @@ static DWORD find_draw_buffers_mask(const struct wined3d_context *context, const
 {
     struct wined3d_rendertarget_view * const *rts = state->fb->render_targets;
     struct wined3d_shader *ps = state->shader[WINED3D_SHADER_TYPE_PIXEL];
-    DWORD rt_mask, rt_mask_bits;
+    DWORD rt_mask, mask;
     unsigned int i;

if (wined3d_settings.offscreen_rendering_mode != ORM_FBO)
@@ -3138,15 +3138,13 @@ static DWORD find_draw_buffers_mask(const struct wined3d_context *context, const

rt_mask = ps ? ps->reg_maps.rt_mask : 1;
     rt_mask &= context->d3d_info->valid_rt_mask;
-    rt_mask_bits = rt_mask;
-    i = 0;
-    while (rt_mask_bits)
+
+    mask = rt_mask;
+    while (mask)
     {
-        rt_mask_bits &= ~(1u << i);
+        i = wined3d_bit_scan(&mask);
         if (!rts[i] || rts[i]->format->id == WINED3DFMT_NULL)
             rt_mask &= ~(1u << i);
-
-        i++;
     }

return rt_mask;