Better tlut hash for fixing MPs font. Didn't notice any slowdown for now.

git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@1402 8ced0084-cf51-0410-be5f-012b33b47a6e

1 files changed, 9 insertions, 0 deletions

diff --git a/Source/Core/VideoCommon/Src/TextureDecoder.cpp b/Source/Core/VideoCommon/Src/TextureDecoder.cpp
index a1654a72ca..9f2b7c00bd 100644
--- a/Source/Core/VideoCommon/Src/TextureDecoder.cpp
+++ b/Source/Core/VideoCommon/Src/TextureDecoder.cpp
@@ -62,6 +62,15 @@ int TexDecoder_GetTextureSizeInBytes(int width, int height, int format)
 	return (width * height * TexDecoder_GetTexelSizeInNibbles(format)) / 2;

 }

 

+u32 TexDecoder_GetTlutHash(const u16 *src, int len)

+{

+	u32 hash = 0xbeefbabe;

+	for (int i = 0; i < len / 2; i += 2) {

+		hash = _rotl(hash, 17) ^ ((u32 *)src)[i];

+	}

+	return hash;

+}

+

 u32 TexDecoder_GetSafeTextureHash(const u8 *src, int width, int height, int texformat, u32 seed)

 {

 	int sz = TexDecoder_GetTextureSizeInBytes(width, height, texformat);