wined3d: Use wined3d_bit_scan() in shader_arb_generate_pshader().

dlls/wined3d/arb_program_shader.c

@@ -3512,17 +3512,18 @@ static GLuint shader_arb_generate_pshader(const struct wined3d_shader *shader,
     BOOL dcl_td = FALSE;
     BOOL want_nv_prog = FALSE;
     struct arb_pshader_private *shader_priv = shader->backend_data;
-    DWORD map;
     BOOL custom_linear_fog = FALSE;
+    uint32_t map;
 
     char srgbtmp[4][4];
     char ftoa_tmp[17];
     unsigned int i, found = 0;
 
-    for (i = 0, map = reg_maps->temporary; map; map >>= 1, ++i)
+    map = reg_maps->temporary;
+    while (map)
     {
-        if (!(map & 1)
-                || (shader->u.ps.color0_mov && i == shader->u.ps.color0_reg)
+        i = wined3d_bit_scan(&map);
+        if ((shader->u.ps.color0_mov && i == shader->u.ps.color0_reg)
                 || (reg_maps->shader_version.major < 2 && !i))
             continue;
 
@@ -3681,12 +3682,12 @@ static GLuint shader_arb_generate_pshader(const struct wined3d_shader *shader,
     /* Base Declarations */
     shader_generate_arb_declarations(shader, reg_maps, buffer, gl_info, NULL, &priv_ctx);
 
-    for (i = 0, map = reg_maps->bumpmat; map; map >>= 1, ++i)
+    map = reg_maps->bumpmat;
+    while (map)
     {
         unsigned char bump_const;
 
-        if (!(map & 1)) continue;
-
+        i = wined3d_bit_scan(&map);
         bump_const = compiled->numbumpenvmatconsts;
         compiled->bumpenvmatconst[bump_const].const_num = WINED3D_CONST_NUM_UNUSED;
         compiled->bumpenvmatconst[bump_const].texunit = i;