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Developing new rasterizer

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git-svn-id: svn://ultimatepp.org/upp/trunk@821 f0d560ea-af0d-0410-9eb7-867de7ffcac7
This commit is contained in:
cxl 2009-01-29 09:12:50 +00:00
parent 460e42bcc9
commit f325204062
11 changed files with 298 additions and 27 deletions
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9
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 << ": ";
s << "x = " << x << ", len = " << len << ", right = " << len + x << ": ";
for(int i = 0; i < data.GetCount(); i++) {
byte val = data[i];
if(val > 128) {
@ -118,16 +118,15 @@ String ScanLine::ToString() const
void Apply(RGBA *t, int len, const RGBA& color, const ScanLine& s)
{
t += s.x;
len -= s.x;
int si = 0;
while(len >= 0 && si < s.data.GetLength()) {
const RGBA *e = t + len;
while(t < e && si < s.data.GetLength()) {
byte val = s.data[si++];
if(val > 128) {
int n = min(len, val - 128);
int n = min(e - t, val - 128);
val = s.data[si++];
while(n--)
AlphaBlendCover7(*t++, color, val);
len -= n;
}
else
AlphaBlendCover7(*t++, color, val);