Removed anisotropic option from SDL_HINT_RENDER_SCALE_QUALITY.

Anisotropic filtering is meant to be used for textures at a stark
 angle, not perpendicular to the camera.

--HG--
extra : rebase_source : e01c4da3bae7f1628de7c049f31f1208dbbbb24c

include/SDL_hints.h

@@ -100,7 +100,7 @@ extern "C" {
  *  This variable can be set to the following values:
  *    "0" or "nearest" - Nearest pixel sampling
  *    "1" or "linear"  - Linear filtering (supported by OpenGL and Direct3D)
- *    "2" or "best"    - Anisotropic filtering (supported by Direct3D)
+ *    "2" or "best"    - Currently this is the same as "linear"
  *
  *  By default nearest pixel sampling is used
  */

src/render/direct3d/SDL_render_d3d.c

@@ -864,10 +864,8 @@ GetScaleQuality(void)
 
     if (!hint || *hint == '0' || SDL_strcasecmp(hint, "nearest") == 0) {
         return D3DTEXF_POINT;
-    } else if (*hint == '1' || SDL_strcasecmp(hint, "linear") == 0) {
+    } else /*if (*hint == '1' || SDL_strcasecmp(hint, "linear") == 0)*/ {
         return D3DTEXF_LINEAR;
-    } else {
-        return D3DTEXF_ANISOTROPIC;
     }
 }