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Developing rasterizer

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git-svn-id: svn://ultimatepp.org/upp/trunk@825 f0d560ea-af0d-0410-9eb7-867de7ffcac7
This commit is contained in:
cxl 2009-01-29 22:56:29 +00:00
parent 00580386fa
commit 0a82b84403
10 changed files with 606 additions and 66 deletions
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112
uppdev/ScanLine/ScanLine.cpp
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@ -99,7 +99,7 @@ ScanLine Pack(int x, const byte *data, int len)
String ScanLine::ToString() const
{
String s;
s << "x = " << x << ", len = " << len << ", right = " << len + x << ": ";
s << "datalen: " << data.GetCount() << "x = " << x << ", len = " << len << ", right = " << len + x << ": ";
for(int i = 0; i < data.GetCount(); i++) {
byte val = data[i];
if(val > 128) {
@ -111,12 +111,12 @@ String ScanLine::ToString() const
else
s << (int)val << ", ";
}
s << "datalen: " << data.GetCount();
return s;
}
void Apply(RGBA *t, int len, const RGBA& color, const ScanLine& s)
void Apply(RGBA *t, int len, const RGBA& c, const ScanLine& s)
{
PAINTER_TIMING("Apply");
RGBA *e = t + len;
const char *q = ~s.data;
const char *qe = s.data.End();
@ -125,12 +125,110 @@ void Apply(RGBA *t, int len, const RGBA& color, const ScanLine& s)
byte val = *q++;
if(val > 128) {
RGBA *e1 = min(e, t + val - 128);
val = *q++;
while(t < e1)
AlphaBlendCover7(*t++, color, val);
byte val = *q++;
if(val == 128 && c.a == 255) {
int l = e1 - t;
while(l >= 16) {
t[0] = c; t[1] = c; t[2] = c; t[3] = c;
t[4] = c; t[5] = c; t[6] = c; t[7] = c;
t[8] = c; t[9] = c; t[10] = c; t[11] = c;
t[12] = c; t[13] = c; t[14] = c; t[15] = c;
t += 16;
l -= 16;
}
switch(l) {
case 15: t[14] = c;
case 14: t[13] = c;
case 13: t[12] = c;
case 12: t[11] = c;
case 11: t[10] = c;
case 10: t[9] = c;
case 9: t[8] = c;
case 8: t[7] = c;
case 7: t[6] = c;
case 6: t[5] = c;
case 5: t[4] = c;
case 4: t[3] = c;
case 3: t[2] = c;
case 2: t[1] = c;
case 1: t[0] = c;
}
t = e1;
}
else {
RGBA c1;
if(val != 128)
c1 = Mul7(c, val);
else
c1 = c;
while(t < e1)
AlphaBlend(*t++, c1);
}
}
else
AlphaBlendCover7(*t++, color, val);
AlphaBlendCover7(*t++, c, val);
// DDUMP(t - e);
}
}
struct SolidFiller {
RGBA *t;
RGBA c;
void Start(int x) { t += x; }
void Render(byte val) { AlphaBlendCover7(*t++, c, val); }
void Render(byte val, int len);
};
void SolidFiller::Render(byte val, int len)
{
if(((val - 128) | (c.a - 255)) == 0) {
while(len >= 16) {
t[0] = c; t[1] = c; t[2] = c; t[3] = c;
t[4] = c; t[5] = c; t[6] = c; t[7] = c;
t[8] = c; t[9] = c; t[10] = c; t[11] = c;
t[12] = c; t[13] = c; t[14] = c; t[15] = c;
t += 16;
len -= 16;
}
switch(len) {
case 15: t[14] = c;
case 14: t[13] = c;
case 13: t[12] = c;
case 12: t[11] = c;
case 11: t[10] = c;
case 10: t[9] = c;
case 9: t[8] = c;
case 8: t[7] = c;
case 7: t[6] = c;
case 6: t[5] = c;
case 5: t[4] = c;
case 4: t[3] = c;
case 3: t[2] = c;
case 2: t[1] = c;
case 1: t[0] = c;
}
t += len;
}
else {
RGBA c1;
if(val != 128)
c1 = Mul7(c, val);
else
c1 = c;
RGBA *e = t + len;
while(t < e)
AlphaBlend(*t++, c1);
}
}
void Render(ImageBuffer& ib, Rasterizer& r, const RGBA& color)
{
Size sz = ib.GetSize();
SolidFiller f;
f.c = color;
for(int y = r.MinY(); y <= r.MaxY(); y++) {
f.t = ib[y];
r.Render(y, f);
}
}