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Differential D2837 Diff 9259 source/blender/render/intern/source/zbuf.c

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source/blender/render/intern/source/zbuf.c

Show First 20 Lines • Show All 1,558 Lines • ▼ Show 20 Linesvoid zspan_scanconvert(ZSpan *zspan, void *handle, float *v1, float *v2, float *v3, void (*func)(void *, int, int, float, float) )
y0= z1*x2-x1*z2; y0= z1*x2-x1*z2;
xx1= (x0*v1[0] + y0*v1[1])/z0; xx1= (x0*v1[0] + y0*v1[1])/z0;
vxd= -(double)x0/(double)z0; vxd= -(double)x0/(double)z0;
vyd= -(double)y0/(double)z0; vyd= -(double)y0/(double)z0;
vy0= ((double)my2)*vyd + (double)xx1; vy0= ((double)my2)*vyd + (double)xx1;
/* correct span */ /* correct span */
sn1= (my0 + my2)/2;
if (zspan->span1[sn1] < zspan->span2[sn1]) {
span1= zspan->span1+my2; span1= zspan->span1+my2;
span2= zspan->span2+my2; span2= zspan->span2+my2;
}
else {
span1= zspan->span2+my2;
span2= zspan->span1+my2;
}
for (i = 0, y = my2; y >= my0; i++, y--, span1--, span2--) { for (i = 0, y = my2; y >= my0; i++, y--, span1--, span2--) {
sn1= floor(*span1); sn1= floor(min_ff(*span1, *span2));
sn2= floor(*span2); sn2= floor(max_ff(*span1, *span2));
sn1++; sn1++;
if (sn2>=rectx) sn2= rectx-1; if (sn2>=rectx) sn2= rectx-1;
if (sn1<0) sn1= 0; if (sn1<0) sn1= 0;
u = (((double)sn1 * uxd) + uy0) - (i * uyd); u = (((double)sn1 * uxd) + uy0) - (i * uyd);
v = (((double)sn1 * vxd) + vy0) - (i * vyd); v = (((double)sn1 * vxd) + vy0) - (i * vyd);
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