1 files changed, 100 insertions, 0 deletions
diff --git a/src/blitter/32bpp_anim_sse2.cpp b/src/blitter/32bpp_anim_sse2.cpp
new file mode 100644
index 000000000..d5fa4268a
--- /dev/null
+++ b/src/blitter/32bpp_anim_sse2.cpp
@@ -0,0 +1,100 @@
+/* $Id$ */
+
+/*
+ * 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.cpp Implementation of a partially SSSE2 32bpp blitter with animation support. */
+
+#ifdef WITH_SSE
+
+#include "../stdafx.h"
+#include "../video/video_driver.hpp"
+#include "32bpp_anim_sse2.hpp"
+#include "32bpp_sse_func.hpp"
+
+#include "../safeguards.h"
+
+/** Instantiation of the partially SSSE2 32bpp with animation blitter factory. */
+static FBlitter_32bppSSE2_Anim iFBlitter_32bppSSE2_Anim;
+
+void Blitter_32bppSSE2_Anim::PaletteAnimate(const Palette &palette)
+{
+	assert(!_screen_disable_anim);
+
+	this->palette = palette;
+	/* If first_dirty is 0, it is for 8bpp indication to send the new
+	 *  palette. However, only the animation colours might possibly change.
+	 *  Especially when going between toyland and non-toyland. */
+	assert(this->palette.first_dirty == PALETTE_ANIM_START || this->palette.first_dirty == 0);
+
+	const uint16 *anim = this->anim_buf;
+	Colour *dst = (Colour *)_screen.dst_ptr;
+
+	bool screen_dirty = false;
+
+	/* Let's walk the anim buffer and try to find the pixels */
+	const int width = this->anim_buf_width;
+	const int screen_pitch = _screen.pitch;
+	const int anim_pitch = this->anim_buf_pitch;
+	__m128i anim_cmp = _mm_set1_epi16(PALETTE_ANIM_START - 1);
+	__m128i brightness_cmp = _mm_set1_epi16(Blitter_32bppBase::DEFAULT_BRIGHTNESS);
+	__m128i colour_mask = _mm_set1_epi16(0xFF);
+	for (int y = this->anim_buf_height; y != 0 ; y--) {
+		Colour *next_dst_ln = dst + screen_pitch;
+		const uint16 *next_anim_ln = anim + anim_pitch;
+		int x = width;
+		while (x > 0) {
+			__m128i data = _mm_load_si128((const __m128i *) anim);
+
+			/* low bytes only, shifted into high positions */
+			__m128i colour_data = _mm_and_si128(data, colour_mask);
+
+			/* test if any colour >= PALETTE_ANIM_START */
+			int colour_cmp_result = _mm_movemask_epi8(_mm_cmpgt_epi16(colour_data, anim_cmp));
+			if (colour_cmp_result) {
+				/* test if any brightness is unexpected */
+				if (x < 8 || colour_cmp_result != 0xFFFF ||
+						_mm_movemask_epi8(_mm_cmpeq_epi16(_mm_srli_epi16(data, 8), brightness_cmp)) != 0xFFFF) {
+					/* slow path: < 8 pixels left or unexpected brightnesses */
+					for (int z = min<int>(x, 8); z != 0 ; z--) {
+						int value = _mm_extract_epi16(data, 0);
+						uint8 colour = GB(value, 0, 8);
+						if (colour >= PALETTE_ANIM_START) {
+							/* Update this pixel */
+							*dst = AdjustBrightneSSE(LookupColourInPalette(colour), GB(value, 8, 8));
+							screen_dirty = true;
+						}
+						data = _mm_srli_si128(data, 2);
+						dst++;
+					}
+				} else {
+					/* medium path: 8 pixels to animate all of expected brightnesses */
+					for (int z = 0; z < 8; z++) {
+						*dst = LookupColourInPalette(_mm_extract_epi16(colour_data, 0));
+						colour_data = _mm_srli_si128(colour_data, 2);
+						dst++;
+					}
+					screen_dirty = true;
+				}
+			} else {
+				/* fast path, no animation */
+				dst += 8;
+			}
+			anim += 8;
+			x -= 8;
+		}
+		dst = next_dst_ln;
+		anim = next_anim_ln;
+	}
+
+	if (screen_dirty) {
+		/* Make sure the backend redraws the whole screen */
+		VideoDriver::GetInstance()->MakeDirty(0, 0, _screen.width, _screen.height);
+	}
+}
+
+#endif /* WITH_SSE */