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Rasterization pretty close now

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This commit is contained in:
Miloslav Číž 2019-05-05 17:27:54 +02:00
parent d585310b97
commit 9e3de8c157
1 changed files with 4 additions and 4 deletions
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8
s3l.h
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@ -791,14 +791,14 @@ void S3L_drawTriangle(
infinite substracting loop */ infinite substracting loop */
#define stepSide(s)\ #define stepSide(s)\
while (s##Err >= s##Dy)\ while (s##Err > s##Dy)\
{\ {\
s##X += s##Inc;\ s##X += s##Inc;\
s##Err -= s##ErrSub;\ s##Err -= s##ErrSub;\
}\ }\
s##Err += s##ErrAdd; s##Err += s##ErrAdd;
initSide(r,t,r,1,1) initSide(r,t,r,1,0)
initSide(l,t,l,1,0) initSide(l,t,l,1,0)
while (currentY < endY) /* draw the triangle from top to bottom -- the while (currentY < endY) /* draw the triangle from top to bottom -- the
@ -821,7 +821,7 @@ void S3L_drawTriangle(
} }
else else
{ {
initSide(r,r,l,0,1); initSide(r,r,l,0,0);
S3L_Unit *tmp = barycentric1; S3L_Unit *tmp = barycentric1;
barycentric1 = barycentric2; barycentric1 = barycentric2;
@ -845,7 +845,7 @@ void S3L_drawTriangle(
S3L_Unit t1 = 0; S3L_Unit t1 = 0;
S3L_Unit t2 = tMax; S3L_Unit t2 = tMax;
for (S3L_ScreenCoord x = lX; x <= rX; ++x) for (S3L_ScreenCoord x = lX; x < rX; ++x)
{ {
*barycentric0 = S3L_interpolateFrom0(rSideUnitPos,t1,tMax); *barycentric0 = S3L_interpolateFrom0(rSideUnitPos,t1,tMax);
*barycentric1 = S3L_interpolateFrom0(lSideUnitPos,t2,tMax); *barycentric1 = S3L_interpolateFrom0(lSideUnitPos,t2,tMax);