wined3d: Use wined3d_bit_scan() in shader_glsl_load_constantsB().

dlls/wined3d/glsl_shader.c

@@ -1239,16 +1239,15 @@ static void shader_glsl_load_constants_i(const struct wined3d_shader *shader, co
 }
 
 /* Context activation is done by the caller. */
-static void shader_glsl_load_constantsB(const struct wined3d_shader *shader, const struct wined3d_gl_info *gl_info,
-        const GLint locations[WINED3D_MAX_CONSTS_B], const BOOL *constants, WORD constants_set)
+static void shader_glsl_load_constants_b(const struct wined3d_shader *shader, const struct wined3d_gl_info *gl_info,
+        const BOOL *constants, const GLint locations[WINED3D_MAX_CONSTS_B], uint32_t constants_set)
 {
     unsigned int i;
     struct list* ptr;
 
-    for (i = 0; constants_set; constants_set >>= 1, ++i)
+    while (constants_set)
     {
-        if (!(constants_set & 1)) continue;
-
+        i = wined3d_bit_scan(&constants_set);
         GL_EXTCALL(glUniform1iv(locations[i], 1, &constants[i]));
     }
 
@@ -1546,8 +1545,8 @@ static void shader_glsl_load_constants(void *shader_priv, struct wined3d_context
                 prog->vs.uniform_i_locations, vshader->reg_maps.integer_constants);
 
     if (update_mask & WINED3D_SHADER_CONST_VS_B)
-        shader_glsl_load_constantsB(vshader, gl_info, prog->vs.uniform_b_locations, state->vs_consts_b,
-                vshader->reg_maps.boolean_constants);
+        shader_glsl_load_constants_b(vshader, gl_info, state->vs_consts_b,
+                prog->vs.uniform_b_locations, vshader->reg_maps.boolean_constants);
 
     if (update_mask & WINED3D_SHADER_CONST_VS_CLIP_PLANES)
     {
@@ -1699,8 +1698,8 @@ static void shader_glsl_load_constants(void *shader_priv, struct wined3d_context
                 prog->ps.uniform_i_locations, pshader->reg_maps.integer_constants);
 
     if (update_mask & WINED3D_SHADER_CONST_PS_B)
-        shader_glsl_load_constantsB(pshader, gl_info, prog->ps.uniform_b_locations, state->ps_consts_b,
-                pshader->reg_maps.boolean_constants);
+        shader_glsl_load_constants_b(pshader, gl_info, state->ps_consts_b,
+                prog->ps.uniform_b_locations, pshader->reg_maps.boolean_constants);
 
     if (update_mask & WINED3D_SHADER_CONST_PS_BUMP_ENV)
     {