cpp/openttd-patchpack/source Changeset - r9654:b39d61f22aad

Changeset - r9654:b39d61f22aad

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smatz - 16 years ago 2008-07-17 23:43:47
smatz@openttd.org

(svn r13721) -Codechange: one less multiplication for colour mixing in 32bpp blitters (GeekToo)

1 file changed with 4 insertions and 11 deletions:

src/blitter/32bpp_base.hpp

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src/blitter/32bpp_base.hpp

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@@ @@ -54,9 +54,9 @@ public: @@
 		/* The 256 is wrong, it should be 255, but 256 is much faster... */
 		return ComposeColour(0xFF,
 							(r * a + cr * (256 - a)) / 256,
 							(g * a + cg * (256 - a)) / 256,
 							(b * a + cb * (256 - a)) / 256);
 							((int)(r - cr) * a) / 256 + cr,
 							((int)(g - cg) * a) / 256 + cg,
 							((int)(b - cb) * a) / 256 + cb);
+	}
 	/**
@@ @@ -79,15 +79,8 @@ public: @@
 		uint r  = GB(colour,  16, 8);
 		uint g  = GB(colour,  8,  8);
 		uint b  = GB(colour,  0,  8);
 		uint cr = GB(current, 16, 8);
 		uint cg = GB(current, 8,  8);
 		uint cb = GB(current, 0,  8);
 		/* The 256 is wrong, it should be 255, but 256 is much faster... */
 		return ComposeColour(0xFF,
 							(r * a + cr * (256 - a)) / 256,
 							(g * a + cg * (256 - a)) / 256,
 							(b * a + cb * (256 - a)) / 256);
 		return ComposeColourRGBANoCheck(r, g, b, a, current);
+	}
 	/**

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