cpp/openttd-patchpack/source Changeset - r9573:3d036a2b3335

Changeset - r9573:3d036a2b3335

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smatz - 16 years ago 2008-06-21 20:58:34
smatz@openttd.org

(svn r13602) -Codechange: little speedup for 8bpp-optimized blitter

1 file changed with 16 insertions and 12 deletions:

src/blitter/8bpp_optimized.cpp

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src/blitter/8bpp_optimized.cpp

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@@ @@ -71,24 +71,28 @@ void Blitter_8bppOptimized::Draw(Blitter @@
 			/* Skip transparent pixels */
 			dst += trans;
 			width -= trans;
 			if (width <= 0) continue;
+			if (width <= 0 || pixels == 0) continue;
 			pixels = min<uint>(pixels, (uint)width);
 			width -= pixels;
 			switch (mode) {
 				case BM_COLOUR_REMAP:
 					for (uint x = 0; x < pixels; x++) {
 						if (bp->remap[*src] != 0) *dst = bp->remap[*src];
 				case BM_COLOUR_REMAP: {
 					const uint8 *remap = bp->remap;
 					do {
 						uint m = remap[*src];
 						if (m != 0) *dst = m;
 						dst++; src++;
+					}
 					break;
 					} while (--pixels != 0);
 				} break;
 				case BM_TRANSPARENT:
 					for (uint x = 0; x < pixels; x++) {
 						*dst = bp->remap[*dst];
 						dst++; src++;
+					}
 					break;
 				case BM_TRANSPARENT: {
 					const uint8 *remap = bp->remap;
 					src += pixels;
 					do {
 						*dst = remap[*dst];
 						dst++;
 					} while (--pixels != 0);
 				} break;
 				default:
 					memcpy(dst, src, pixels);

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