Add: 32bpp SSE2 blitter palette animator (#6795)

Create a new blitter mode: 32bpp-sse2-anim, which is 32bpp-anim + this.
32bpp-sse2-anim is now used by default where 32bpp-anim would have been.
Also use this with the 32bpp-sse4-anim blitter.

See issue #6469.

src/blitter/32bpp_anim_sse2.hpp

@@ -0,0 +1,43 @@
+/* $Id$ */
+
+/*
+ * This file is part of OpenTTD.
+ * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
+ * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/** @file 32bpp_anim.hpp A partially SSE2 32 bpp blitter with animation support. */
+
+#ifndef BLITTER_32BPP_SSE2_ANIM_HPP
+#define BLITTER_32BPP_SSE2_ANIM_HPP
+
+#ifdef WITH_SSE
+
+#ifndef SSE_VERSION
+#define SSE_VERSION 2
+#endif
+
+#ifndef FULL_ANIMATION
+#define FULL_ANIMATION 1
+#endif
+
+#include "32bpp_anim.hpp"
+#include "32bpp_sse2.hpp"
+
+/** A partially 32 bpp blitter with palette animation. */
+class Blitter_32bppSSE2_Anim : public Blitter_32bppAnim {
+public:
+	/* virtual */ void PaletteAnimate(const Palette &palette);
+	/* virtual */ const char *GetName() { return "32bpp-sse2-anim"; }
+};
+
+/** Factory for the partially 32bpp blitter with animation. */
+class FBlitter_32bppSSE2_Anim : public BlitterFactory {
+public:
+	FBlitter_32bppSSE2_Anim() : BlitterFactory("32bpp-sse2-anim", "32bpp partially SSE2 Animation Blitter (palette animation)", HasCPUIDFlag(1, 3, 26)) {}
+	/* virtual */ Blitter *CreateInstance() { return new Blitter_32bppSSE2_Anim(); }
+};
+
+#endif /* WITH_SSE */
+#endif /* BLITTER_32BPP_ANIM_HPP */