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68 lines
1.4 KiB
C++
68 lines
1.4 KiB
C++
#ifndef _ScanLine_ScanLine_h_
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#define _ScanLine_ScanLine_h_
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#include <CtrlLib/CtrlLib.h>
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#define RASTERIZER2
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using namespace Upp;
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#define PAINTER_TIMING(x) // RTIMING(x)
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inline RGBA Mul7(const RGBA& s, int mul)
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{
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RGBA t;
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t.r = (mul * s.r) >> 7;
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t.g = (mul * s.g) >> 7;
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t.b = (mul * s.b) >> 7;
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t.a = (mul * s.a) >> 7;
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return t;
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}
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inline void AlphaBlend(RGBA& t, const RGBA& c)
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{
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int alpha = 256 - (c.a + (c.a >> 7));
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t.r = c.r + (alpha * t.r >> 8);
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t.g = c.g + (alpha * t.g >> 8);
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t.b = c.b + (alpha * t.b >> 8);
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t.a = c.a + (alpha * t.a >> 8);
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}
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inline void AlphaBlendCover7(RGBA& t, const RGBA& c, byte cover)
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{
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#if 0
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AlphaBlend(t, Mul7(c, cover));
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#else
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int a = c.a * cover >> 7;
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int alpha = 256 - (a + (a >> 7));
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t.r = (c.r * cover >> 7) + (alpha * t.r >> 8);
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t.g = (c.g * cover >> 7) + (alpha * t.g >> 8);
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t.b = (c.b * cover >> 7) + (alpha * t.b >> 8);
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t.a = a + (alpha * t.a >> 8);
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#endif
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}
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struct ScanLine {
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int x, len;
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String data;
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String ToString() const;
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};
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void Apply(RGBA *t, int len, const RGBA& color, const ScanLine& s);
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ScanLine And(const ScanLine& a, const ScanLine& b);
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ScanLine Pack(int x, const byte *data, int len);
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#ifdef RASTERIZER2
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#include "Rasterizer2.h"
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#else
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#include "Rasterizer.h"
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#endif
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void Render(ImageBuffer& ib, Rasterizer& r, const RGBA& color);
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#endif
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