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mitsuba
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work around a nasty code generation issue on OSX (gcc 4.2)

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Wenzel Jakob 2010-09-20 23:14:33 +02:00
parent e2dfe9a330
commit ff1a21b496
2 changed files with 2 additions and 91 deletions
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3
SConstruct
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@ -319,7 +319,8 @@ librender = renderEnv.SharedLibrary('src/librender/mitsuba-render', [
'src/librender/preview.cpp', 'src/librender/photonmap.cpp',
'src/librender/gatherproc.cpp', 'src/librender/mipmap3d.cpp',
'src/librender/volume.cpp', 'src/librender/vpl.cpp',
'src/librender/shader.cpp', 'src/librender/shandler.cpp'
'src/librender/shader.cpp', 'src/librender/shandler.cpp',
'src/librender/intersection.cpp'
])
if sys.platform == "darwin":

90
src/librender/shape.cpp
View File

@ -159,95 +159,5 @@ std::string ShapeSamplingRecord::toString() const {
return oss.str();
}
std::string Intersection::toString() const {
if (!isValid())
return "Intersection[invalid]";
std::ostringstream oss;
oss << "Intersection[" << std::endl
<< " p = " << p.toString() << "," << std::endl
<< " wi = " << wi.toString() << "," << std::endl
<< " t = " << t << "," << std::endl
<< " geoFrame = " << indent(geoFrame.toString()) << "," << std::endl
<< " shFrame = " << indent(shFrame.toString()) << "," << std::endl
<< " uv = " << uv.toString() << "," << std::endl
<< " dpdu = " << dpdu.toString() << "," << std::endl
<< " dpdv = " << dpdv.toString() << "," << std::endl
<< " shape = " << indent(((Object *)shape)->toString()) << std::endl
<< "]";
return oss.str();
}
void Intersection::computePartials(const RayDifferential &ray) {
/* Compute the texture coordinates partials wrt.
changes in the screen-space position. Based on PBRT */
if (hasUVPartials)
return;
hasUVPartials = true;
if (!ray.hasDifferentials) {
dudx = dvdx = dudy = dvdy = 0.0f;
return;
}
/* Offset of the plane passing through the surface */
const Float d = -dot(geoFrame.n, Vector(p));
const Float txRecip = dot(geoFrame.n, ray.rx.d),
tyRecip = dot(geoFrame.n, ray.ry.d);
if (EXPECT_NOT_TAKEN(txRecip == 0 || tyRecip == 0)) {
dudx = dvdx = dudy = dvdy = 0.0f;
return;
}
/* Ray distances traveled */
const Float tx = -(dot(geoFrame.n, Vector(ray.rx.o)) + d) /
txRecip;
const Float ty = -(dot(geoFrame.n, Vector(ray.ry.o)) + d) /
tyRecip;
/* Auxilary intersection point of the adjacent rays */
Point px = ray.rx(tx), py = ray.ry(ty);
/* Calculate the U and V partials by solving two out
of a set of 3 equations in an overconstrained system */
Float A[2][2], Bx[2], By[2], x[2];
int axes[2];
Float absX = std::abs(geoFrame.n.x),
absY = std::abs(geoFrame.n.y),
absZ = std::abs(geoFrame.n.z);
if (absX > absY && absX > absZ) {
axes[0] = 1; axes[1] = 2;
} else if (absY > absZ) {
axes[0] = 0; axes[1] = 2;
} else {
axes[0] = 0; axes[1] = 1;
}
A[0][0] = dpdu[axes[0]];
A[0][1] = dpdv[axes[0]];
A[1][0] = dpdu[axes[1]];
A[1][1] = dpdv[axes[1]];
Bx[0] = px[axes[0]] - p[axes[0]];
Bx[1] = px[axes[1]] - p[axes[1]];
By[0] = py[axes[0]] - p[axes[0]];
By[1] = py[axes[1]] - p[axes[1]];
if (solveLinearSystem2x2(A, Bx, x)) {
dudx = x[0]; dvdx = x[1];
} else {
dudx = 1; dvdx = 0;
}
if (solveLinearSystem2x2(A, By, x)) {
dudy = x[0]; dvdy = x[1];
} else {
dudy = 0; dudy = 1;
}
}
MTS_IMPLEMENT_CLASS(Shape, true, ConfigurableObject)
MTS_NAMESPACE_END