Engine directory for ticket #1

Engine/source/platformX86UNIX/x86UNIXAsmBlit.cpp

@@ -0,0 +1,63 @@
+//-----------------------------------------------------------------------------
+// Copyright (c) 2012 GarageGames, LLC
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to
+// deal in the Software without restriction, including without limitation the
+// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+// sell copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+// IN THE SOFTWARE.
+//-----------------------------------------------------------------------------
+
+#include "math/mMath.h"
+#include "gfx/bitmap/bitmapUtils.h"
+
+//--------------------------------------------------------------------------
+void bitmapExtrude5551_asm(const void *srcMip, void *mip, U32 height, U32 width)
+{
+   const U16 *src = (const U16 *) srcMip;
+   U16 *dst = (U16 *) mip;
+   U32 stride = width << 1;
+
+   for(U32 y = 0; y < height; y++)
+   {
+      for(U32 x = 0; x < width; x++)
+      {
+         U32 a = src[0];
+         U32 b = src[1];
+         U32 c = src[stride];
+         U32 d = src[stride+1];
+         dst[x] = ((((a >> 11) + (b >> 11) + (c >> 11) + (d >> 11)) >> 2) << 11) |
+                  (((  ((a >> 6) & 0x1f) + ((b >> 6) & 0x1f) + ((c >> 6) & 0x1f) + ((d >> 6) & 0x1F) ) >> 2) << 6) |
+                  ((( ((a >> 1) & 0x1F) + ((b >> 1) & 0x1F) + ((c >> 1) & 0x1f) + ((d >> 1) & 0x1f)) >> 2) << 1);
+         src += 2;
+      }
+      src += stride;
+      dst += width;
+   }
+}
+
+//--------------------------------------------------------------------------
+void PlatformBlitInit()
+{
+   bitmapExtrude5551 = bitmapExtrude5551_asm;
+   bitmapExtrudeRGB  = bitmapExtrudeRGB_c;
+
+   if (Platform::SystemInfo.processor.properties & CPU_PROP_MMX)
+   {
+      // JMQ: haven't bothered porting mmx bitmap funcs because they don't
+      // seem to offer a big performance boost right now.
+   }
+}
+