[smooth] Streamline pixmap drawing a bit more.
Zero coverage is unlikely (1 out of 256) to warrant checking. This gives 0.5% speed improvement in dendering simple glyphs. * src/smooth/ftgrays.c (gray_hline, gray_render_span): Remove checks.
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@ -1,3 +1,12 @@
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2016-08-30 Alexei Podtelezhnikov <apodtele@gmail.com>
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[smooth] Streamline pixmap drawing a bit more.
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Zero coverage is unlikely (1 out of 256) to warrant checking. This
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gives 0.5% speed improvement in dendering simple glyphs.
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* src/smooth/ftgrays.c (gray_hline, gray_render_span): Remove checks.
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2016-08-29 Alexei Podtelezhnikov <apodtele@gmail.com>
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2016-08-29 Alexei Podtelezhnikov <apodtele@gmail.com>
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[smooth] Streamline pixmap drawing.
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[smooth] Streamline pixmap drawing.
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@ -1281,31 +1281,26 @@ typedef ptrdiff_t FT_PtrDist;
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for ( ; count > 0; count--, spans++ )
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for ( ; count > 0; count--, spans++ )
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{
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{
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unsigned char coverage = spans->coverage;
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unsigned char coverage = spans->coverage;
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unsigned char* q = p + spans->x;
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if ( coverage )
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/* For small-spans it is faster to do it by ourselves than
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* calling `memset'. This is mainly due to the cost of the
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* function call.
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*/
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switch ( spans->len )
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{
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{
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unsigned char* q = p + spans->x;
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case 7: *q++ = coverage;
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case 6: *q++ = coverage;
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case 5: *q++ = coverage;
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/* For small-spans it is faster to do it by ourselves than
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case 4: *q++ = coverage;
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* calling `memset'. This is mainly due to the cost of the
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case 3: *q++ = coverage;
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* function call.
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case 2: *q++ = coverage;
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*/
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case 1: *q = coverage;
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switch ( spans->len )
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case 0: break;
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{
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default:
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case 7: *q++ = coverage;
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FT_MEM_SET( q, coverage, spans->len );
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case 6: *q++ = coverage;
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case 5: *q++ = coverage;
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case 4: *q++ = coverage;
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case 3: *q++ = coverage;
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case 2: *q++ = coverage;
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case 1: *q = coverage;
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case 0: break;
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default:
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FT_MEM_SET( q, coverage, spans->len );
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}
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}
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}
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}
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}
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}
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}
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@ -1317,7 +1312,8 @@ typedef ptrdiff_t FT_PtrDist;
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TArea area,
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TArea area,
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TCoord acount )
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TCoord acount )
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{
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{
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int coverage;
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int coverage;
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FT_Span span;
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/* compute the coverage line's coverage, depending on the */
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/* compute the coverage line's coverage, depending on the */
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@ -1346,17 +1342,11 @@ typedef ptrdiff_t FT_PtrDist;
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coverage = 255;
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coverage = 255;
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}
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}
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if ( coverage )
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span.x = (short)( x + ras.min_ex );
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{
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span.len = (unsigned short)acount;
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FT_Span span;
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span.coverage = (unsigned char)coverage;
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ras.render_span( y + ras.min_ey, 1, &span, ras.render_span_data );
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span.x = (short)( x + ras.min_ex );
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span.len = (unsigned short)acount;
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span.coverage = (unsigned char)coverage;
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ras.render_span( y + ras.min_ey, 1, &span, ras.render_span_data );
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}
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}
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}
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