wined3d: Use wined3d_bit_scan() in vshader_get_input().

dlls/wined3d/shader.c

@@ -3578,24 +3578,24 @@ static BOOL match_usage(BYTE usage1, BYTE usage_idx1, BYTE usage2, BYTE usage_id
     return FALSE;
 }
 
-BOOL vshader_get_input(const struct wined3d_shader *shader,
-        BYTE usage_req, BYTE usage_idx_req, unsigned int *regnum)
+bool vshader_get_input(const struct wined3d_shader *shader,
+        uint8_t usage_req, uint8_t usage_idx_req, unsigned int *regnum)
 {
-    WORD map = shader->reg_maps.input_registers;
+    uint32_t map = shader->reg_maps.input_registers & 0xffff;
     unsigned int i;
 
-    for (i = 0; map; map >>= 1, ++i)
+    while (map)
     {
-        if (!(map & 1)) continue;
-
+        i = wined3d_bit_scan(&map);
         if (match_usage(shader->u.vs.attributes[i].usage,
                 shader->u.vs.attributes[i].usage_idx, usage_req, usage_idx_req))
         {
             *regnum = i;
-            return TRUE;
+            return true;
         }
     }
-    return FALSE;
+
+    return false;
 }
 
 static HRESULT shader_init(struct wined3d_shader *shader, struct wined3d_device *device,

dlls/wined3d/wined3d_private.h

@@ -5759,8 +5759,8 @@ void find_ps_compile_args(const struct wined3d_state *state, const struct wined3
         BOOL position_transformed, struct ps_compile_args *args,
         const struct wined3d_context *context) DECLSPEC_HIDDEN;
 
-BOOL vshader_get_input(const struct wined3d_shader *shader,
-        BYTE usage_req, BYTE usage_idx_req, unsigned int *regnum) DECLSPEC_HIDDEN;
+bool vshader_get_input(const struct wined3d_shader *shader,
+        uint8_t usage_req, uint8_t usage_idx_req, unsigned int *regnum) DECLSPEC_HIDDEN;
 void find_vs_compile_args(const struct wined3d_state *state, const struct wined3d_shader *shader,
         struct vs_compile_args *args, const struct wined3d_context *context) DECLSPEC_HIDDEN;