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Updated glStencilViewer for Loop patches

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Also, changed sample initialization for triangle refinement to keep sample
locations within base triangles.
This commit is contained in:
David G Yu 2019-01-18 18:21:13 -08:00
parent 06f4a60939
commit 3757eb120b
1 changed files with 30 additions and 6 deletions
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36
examples/glStencilViewer/glStencilViewer.cpp
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@ -298,6 +298,8 @@ createMesh(ShapeDesc const & shapeDesc, int level) {
// create Far mesh (topology)
OpenSubdiv::Sdc::SchemeType sdctype = GetSdcType(*shape);
OpenSubdiv::Sdc::Options sdcoptions = GetSdcOptions(*shape);
OpenSubdiv::Sdc::Split sdcsplit =
Sdc::SchemeTypeTraits::GetTopologicalSplitType(sdctype);
OpenSubdiv::Far::TopologyRefiner * refiner =
OpenSubdiv::Far::TopologyRefinerFactory<Shape>::Create(*shape,
@ -357,8 +359,15 @@ createMesh(ShapeDesc const & shapeDesc, int level) {
larray.t = vPtr;
for (int j=0; j<g_nsamples; ++j, ++uPtr, ++vPtr) {
*uPtr = (float)rand()/(float)RAND_MAX;
*vPtr = (float)rand()/(float)RAND_MAX;
float u = (float)rand()/(float)RAND_MAX;
float v = (float)rand()/(float)RAND_MAX;
if (sdcsplit == Sdc::SPLIT_TO_TRIS && (u+v >= 1.0f)) {
// Keep locations within the triangular parametric domain
u = 1.0f - u;
v = 1.0f - v;
}
*uPtr = u;
*vPtr = v;
}
}
@ -1052,21 +1061,36 @@ callbackErrorGLFW(int error, const char* description) {
int main(int argc, char **argv) {
bool fullscreen = false;
Scheme defaultScheme = kCatmark;
std::string str;
for (int i = 1; i < argc; ++i) {
if (!strcmp(argv[i], "-u")) {
g_adaptive = false;
}
if (!strcmp(argv[i], "-d")) {
g_isolationLevel = atoi(argv[++i]);
} else if (!strcmp(argv[i], "-f")) {
}
else if (!strcmp(argv[i], "-f")) {
fullscreen = true;
} else {
}
else if (!strcmp(argv[i], "-bilinear")) {
defaultScheme = kBilinear;
}
else if (!strcmp(argv[i], "-catmark")) {
defaultScheme = kCatmark;
}
else if (!strcmp(argv[i], "-loop")) {
defaultScheme = kLoop;
}
else {
std::ifstream ifs(argv[1]);
if (ifs) {
std::stringstream ss;
ss << ifs.rdbuf();
ifs.close();
str = ss.str();
g_defaultShapes.push_back(ShapeDesc(argv[1], str.c_str(), kCatmark));
g_defaultShapes.push_back(ShapeDesc(argv[1], str.c_str(), defaultScheme));
}
}
}