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Add macro

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This commit is contained in:
Miloslav Číž 2019-05-10 18:50:47 +02:00
parent 01e523aff0
commit 1f0aa51429
1 changed files with 12 additions and 19 deletions
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31
s3l.h
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@ -116,7 +116,7 @@
#endif
#ifndef S3L_PERSPECTIVE_CORRECTION
#define S3L_PERSPECTIVE_CORRECTION 1
#define S3L_PERSPECTIVE_CORRECTION 0
#endif
#define S3L_HALF_RESOLUTION_X (S3L_RESOLUTION_X >> 1)
@ -1013,18 +1013,18 @@ void _S3L_drawFilledTriangle(
{
if (currentY == splitY) // reached a vertical split of the triangle?
{ // then reinit one side
#define manageSplit(b0,b1,s)\
S3L_Unit *tmp = barycentric##b0;\
barycentric##b0 = barycentric##b1;\
barycentric##b1 = tmp;\
s##SideUnitPos =\
(S3L_FRACTIONS_PER_UNIT << S3L_LERP_QUALITY) - s##SideUnitPos;\
s##SideUnitStep *= -1;
if (splitOnLeft)
{
initSide(l,l,r,0);
S3L_Unit *tmp = barycentric0;
barycentric0 = barycentric2;
barycentric2 = tmp;
rSideUnitPos = (S3L_FRACTIONS_PER_UNIT << S3L_LERP_QUALITY)
- rSideUnitPos;
rSideUnitStep *= -1;
manageSplit(0,2,r)
#if S3L_PERSPECTIVE_CORRECTION == 1
initPC(l,r,l)
@ -1033,15 +1033,7 @@ void _S3L_drawFilledTriangle(
else
{
initSide(r,r,l,0);
S3L_Unit *tmp = barycentric1;
barycentric1 = barycentric2;
barycentric2 = tmp;
lSideUnitPos = (S3L_FRACTIONS_PER_UNIT << S3L_LERP_QUALITY)
- lSideUnitPos;
lSideUnitStep *= -1;
manageSplit(1,2,l)
#if S3L_PERSPECTIVE_CORRECTION == 1
initPC(r,l,r)
@ -1114,6 +1106,7 @@ void _S3L_drawFilledTriangle(
++currentY;
}
#undef manageSplit
#undef initPC
#undef initSide
#undef stepSide