// Tests ImageBuf construction from application buffer
void ImageBuf_test_appbuffer ()
{
const int WIDTH = 8;
const int HEIGHT = 8;
const int CHANNELS = 1;
static float buf[HEIGHT][WIDTH] = {
{ 0, 0, 0, 0, 1, 0, 0, 0 },
{ 0, 0, 0, 1, 0, 1, 0, 0 },
{ 0, 0, 1, 0, 0, 0, 1, 0 },
{ 0, 1, 0, 0, 0, 0, 0, 1 },
{ 0, 0, 1, 0, 0, 0, 1, 0 },
{ 0, 0, 0, 1, 0, 1, 0, 0 },
{ 0, 0, 0, 0, 1, 0, 0, 0 },
{ 0, 0, 0, 0, 0, 0, 0, 0 }
};
ImageSpec spec (WIDTH, HEIGHT, CHANNELS, TypeDesc::FLOAT);
ImageBuf A (spec, buf);
// Make sure A now points to the buffer
OIIO_CHECK_EQUAL ((void *)A.pixeladdr (0, 0, 0), (void *)buf);
// write it
A.write ("A.tif");
// Read it back and make sure it matches the original
ImageBuf B ("A.tif");
for (int y = 0; y < HEIGHT; ++y)
for (int x = 0; x < WIDTH; ++x)
OIIO_CHECK_EQUAL (A.getchannel (x, y, 0, 0),
B.getchannel (x, y, 0, 0));
}
int
main (int argc, char *argv[])
{
Filesystem::convert_native_arguments (argc, (const char **)argv);
getargs (argc, argv);
if (! quiet)
std::cout << "Comparing \"" << filenames[0]
<< "\" and \"" << filenames[1] << "\"\n";
// Create a private ImageCache so we can customize its cache size
// and instruct it store everything internally as floats.
ImageCache *imagecache = ImageCache::create (true);
imagecache->attribute ("forcefloat", 1);
if (sizeof(void *) == 4) // 32 bit or 64?
imagecache->attribute ("max_memory_MB", 512.0);
else
imagecache->attribute ("max_memory_MB", 2048.0);
imagecache->attribute ("autotile", 256);
// force a full diff, even for files tagged with the same
// fingerprint, just in case some mistake has been made.
imagecache->attribute ("deduplicate", 0);
ImageBuf img0, img1;
if (! read_input (filenames[0], img0, imagecache) ||
! read_input (filenames[1], img1, imagecache))
return ErrFile;
// ImageSpec spec0 = img0.spec(); // stash it
int ret = ErrOK;
for (int subimage = 0; subimage < img0.nsubimages(); ++subimage) {
if (subimage > 0 && !compareall)
break;
if (subimage >= img1.nsubimages())
break;
if (! read_input (filenames[0], img0, imagecache, subimage) ||
! read_input (filenames[1], img1, imagecache, subimage)) {
std::cerr << "Failed to read subimage " << subimage << "\n";
return ErrFile;
}
if (img0.nmiplevels() != img1.nmiplevels()) {
if (! quiet)
std::cout << "Files do not match in their number of MIPmap levels\n";
}
for (int m = 0; m < img0.nmiplevels(); ++m) {
if (m > 0 && !compareall)
break;
if (m > 0 && img0.nmiplevels() != img1.nmiplevels()) {
std::cerr << "Files do not match in their number of MIPmap levels\n";
ret = ErrDifferentSize;
break;
}
if (! read_input (filenames[0], img0, imagecache, subimage, m) ||
! read_input (filenames[1], img1, imagecache, subimage, m))
return ErrFile;
if (img0.deep() != img1.deep()) {
std::cerr << "One image contains deep data, the other does not\n";
ret = ErrDifferentSize;
break;
}
int npels = img0.spec().width * img0.spec().height * img0.spec().depth;
if (npels == 0)
npels = 1; // Avoid divide by zero for 0x0 images
ASSERT (img0.spec().format == TypeDesc::FLOAT);
// Compare the two images.
//
ImageBufAlgo::CompareResults cr;
ImageBufAlgo::compare (img0, img1, failthresh, warnthresh, cr);
int yee_failures = 0;
if (perceptual && ! img0.deep()) {
ImageBufAlgo::CompareResults cr;
yee_failures = ImageBufAlgo::compare_Yee (img0, img1, cr);
}
if (cr.nfail > (failpercent/100.0 * npels) || cr.maxerror > hardfail ||
yee_failures > (failpercent/100.0 * npels)) {
ret = ErrFail;
} else if (cr.nwarn > (warnpercent/100.0 * npels) || cr.maxerror > hardwarn) {
if (ret != ErrFail)
ret = ErrWarn;
}
// Print the report
//
if (verbose || (ret != ErrOK && !quiet)) {
if (compareall)
print_subimage (img0, subimage, m);
std::cout << " Mean error = ";
safe_double_print (cr.meanerror);
std::cout << " RMS error = ";
safe_double_print (cr.rms_error);
std::cout << " Peak SNR = ";
safe_double_print (cr.PSNR);
std::cout << " Max error = " << cr.maxerror;
if (cr.maxerror != 0) {
std::cout << " @ (" << cr.maxx << ", " << cr.maxy;
if (img0.spec().depth > 1)
std::cout << ", " << cr.maxz;
if (cr.maxc < (int)img0.spec().channelnames.size())
std::cout << ", " << img0.spec().channelnames[cr.maxc] << ')';
else if (cr.maxc < (int)img1.spec().channelnames.size())
std::cout << ", " << img1.spec().channelnames[cr.maxc] << ')';
else
std::cout << ", channel " << cr.maxc << ')';
}
std::cout << "\n";
// when Visual Studio is used float values in scientific foramt are
// printed with three digit exponent. We change this behaviour to fit
// Linux way
#ifdef _MSC_VER
_set_output_format(_TWO_DIGIT_EXPONENT);
#endif
std::streamsize precis = std::cout.precision();
std::cout << " " << cr.nwarn << " pixels ("
<< std::setprecision(3) << (100.0*cr.nwarn / npels)
<< std::setprecision(precis) << "%) over " << warnthresh << "\n";
std::cout << " " << cr.nfail << " pixels ("
<< std::setprecision(3) << (100.0*cr.nfail / npels)
<< std::setprecision(precis) << "%) over " << failthresh << "\n";
if (perceptual)
std::cout << " " << yee_failures << " pixels ("
<< std::setprecision(3) << (100.0*yee_failures / npels)
<< std::setprecision(precis)
<< "%) failed the perceptual test\n";
}
// If the user requested that a difference image be output,
// do that. N.B. we only do this for the first subimage
// right now, because ImageBuf doesn't really know how to
// write subimages.
if (diffimage.size() && (cr.maxerror != 0 || !outdiffonly)) {
ImageBuf diff;
if (diffabs)
ImageBufAlgo::absdiff (diff, img0, img1);
else
ImageBufAlgo::sub (diff, img0, img1);
if (diffscale != 1.0f)
ImageBufAlgo::mul (diff, diff, diffscale);
diff.write (diffimage);
// Clear diff image name so we only save the first
// non-matching subimage.
diffimage = "";
}
}
}
if (compareall && img0.nsubimages() != img1.nsubimages()) {
if (! quiet)
std::cerr << "Images had differing numbers of subimages ("
<< img0.nsubimages() << " vs " << img1.nsubimages() << ")\n";
ret = ErrFail;
}
if (!compareall && (img0.nsubimages() > 1 || img1.nsubimages() > 1)) {
if (! quiet)
std::cout << "Only compared the first subimage (of "
<< img0.nsubimages() << " and " << img1.nsubimages()
<< ", respectively)\n";
}
if (ret == ErrOK) {
if (! quiet)
std::cout << "PASS\n";
}
else if (ret == ErrWarn) {
if (! quiet)
std::cout << "WARNING\n";
}
else if (ret) {
if (quiet)
std::cerr << "FAILURE\n";
else
std::cout << "FAILURE\n";
}
imagecache->invalidate_all (true);
ImageCache::destroy (imagecache);
return ret;
}
static void
write_mipmap (ImageBuf &img, const ImageSpec &outspec_template,
std::string outputfilename, std::string outformat,
TypeDesc outputdatatype, bool mipmap)
{
ImageSpec outspec = outspec_template;
outspec.set_format (outputdatatype);
// Find an ImageIO plugin that can open the output file, and open it
Timer writetimer;
ImageOutput *out = ImageOutput::create (outformat.c_str());
if (! out) {
std::cerr
<< "maketx ERROR: Could not find an ImageIO plugin to write "
<< outformat << " files:" << geterror() << "\n";
exit (EXIT_FAILURE);
}
if (! out->supports ("tiles")) {
std::cerr << "maketx ERROR: \"" << outputfilename
<< "\" format does not support tiled images\n";
exit (EXIT_FAILURE);
}
if (mipmap && !out->supports ("multiimage") && !out->supports ("mipmap")) {
std::cerr << "maketx ERROR: \"" << outputfilename
<< "\" format does not support multires images\n";
exit (EXIT_FAILURE);
}
if (! mipmap && ! strcmp (out->format_name(), "openexr")) {
// Send hint to OpenEXR driver that we won't specify a MIPmap
outspec.attribute ("openexr:levelmode", 0 /* ONE_LEVEL */);
}
if (mipmap && ! strcmp (out->format_name(), "openexr")) {
outspec.attribute ("openexr:roundingmode", 0 /* ROUND_DOWN */);
}
// OpenEXR always uses border sampling for environment maps
if ((envlatlmode || envcubemode) &&
!strcmp(out->format_name(), "openexr")) {
src_samples_border = true;
outspec.attribute ("oiio:updirection", "y");
outspec.attribute ("oiio:sampleborder", 1);
}
if (envlatlmode && src_samples_border)
fix_latl_edges (img);
if (! out->open (outputfilename.c_str(), outspec)) {
std::cerr << "maketx ERROR: Could not open \"" << outputfilename
<< "\" : " << out->geterror() << "\n";
exit (EXIT_FAILURE);
}
// Write out the image
if (verbose) {
std::cout << " Writing file: " << outputfilename << std::endl;
std::cout << " Filter \"" << filter->name() << "\" width = "
<< filter->width() << "\n";
}
bool ok = true;
ok &= img.write (out);
stat_writetime += writetimer();
if (mipmap) { // Mipmap levels:
if (verbose)
std::cout << " Mipmapping...\n" << std::flush;
ImageBuf tmp;
ImageBuf *big = &img, *small = &tmp;
while (ok && (outspec.width > 1 || outspec.height > 1)) {
Timer miptimer;
// Resize a factor of two smaller
ImageSpec smallspec = outspec;
smallspec.width = big->spec().width;
smallspec.height = big->spec().height;
smallspec.depth = big->spec().depth;
if (smallspec.width > 1)
smallspec.width /= 2;
if (smallspec.height > 1)
smallspec.height /= 2;
smallspec.full_width = smallspec.width;
smallspec.full_height = smallspec.height;
smallspec.full_depth = smallspec.depth;
smallspec.set_format (TypeDesc::FLOAT);
small->alloc (smallspec); // Realocate with new size
if (filtername == "box" && filter->width() == 1.0f)
parallel_image (resize_block, small, big,
smallspec.x, smallspec.x+smallspec.width,
smallspec.y, smallspec.y+smallspec.height,
nthreads);
else
parallel_image (resize_block_HQ, small, big,
smallspec.x, smallspec.x+smallspec.width,
smallspec.y, smallspec.y+smallspec.height,
nthreads);
stat_miptime += miptimer();
outspec = smallspec;
outspec.set_format (outputdatatype);
if (envlatlmode && src_samples_border)
fix_latl_edges (*small);
Timer writetimer;
// If the format explicitly supports MIP-maps, use that,
// otherwise try to simulate MIP-mapping with multi-image.
bool ok = false;
ImageOutput::OpenMode mode = out->supports ("mipmap") ?
ImageOutput::AppendMIPLevel : ImageOutput::AppendSubimage;
if (! out->open (outputfilename.c_str(), outspec, mode)) {
std::cerr << "maketx ERROR: Could not append \"" << outputfilename
<< "\" : " << out->geterror() << "\n";
exit (EXIT_FAILURE);
}
ok &= small->write (out);
stat_writetime += writetimer();
if (verbose)
std::cout << " " << smallspec.width << 'x'
<< smallspec.height << "\n" << std::flush;
std::swap (big, small);
}
}
if (verbose)
std::cout << " Wrote file: " << outputfilename << std::endl;
writetimer.reset ();
writetimer.start ();
if (ok)
ok &= out->close ();
stat_writetime += writetimer ();
delete out;
if (! ok) {
std::cerr << "maketx ERROR writing \"" << outputfilename
<< "\" : " << out->geterror() << "\n";
exit (EXIT_FAILURE);
}
}
extern "C" OSL_DLL_EXPORT int
test_shade (int argc, const char *argv[])
{
OIIO::Timer timer;
// Create a new shading system. We pass it the RendererServices
// object that services callbacks from the shading system, NULL for
// the TextureSystem (that just makes 'create' make its own TS), and
// an error handler.
shadingsys = new ShadingSystem (&rend, NULL, &errhandler);
// Register the layout of all closures known to this renderer
// Any closure used by the shader which is not registered, or
// registered with a different number of arguments will lead
// to a runtime error.
register_closures(shadingsys);
// Remember that each shader parameter may optionally have a
// metadata hint [[int lockgeom=...]], where 0 indicates that the
// parameter may be overridden by the geometry itself, for example
// with data interpolated from the mesh vertices, and a value of 1
// means that it is "locked" with respect to the geometry (i.e. it
// will not be overridden with interpolated or
// per-geometric-primitive data).
//
// In order to most fully optimize shader, we typically want any
// shader parameter not explicitly specified to default to being
// locked (i.e. no per-geometry override):
shadingsys->attribute("lockgeom", 1);
// Now we declare our shader.
//
// Each material in the scene is comprised of a "shader group."
// Each group is comprised of one or more "layers" (a.k.a. shader
// instances) with possible connections from outputs of
// upstream/early layers into the inputs of downstream/later layers.
// A shader instance is the combination of a reference to a shader
// master and its parameter values that may override the defaults in
// the shader source and may be particular to this instance (versus
// all the other instances of the same shader).
//
// A shader group declaration typically looks like this:
//
// ShaderGroupRef shadergroup = ss->ShaderGroupBegin ();
// ss->Parameter ("paramname", TypeDesc paramtype, void *value);
// ... and so on for all the other parameters of...
// ss->Shader ("shadertype", "shadername", "layername");
// The Shader() call creates a new instance, which gets
// all the pending Parameter() values made right before it.
// ... and other shader instances in this group, interspersed with...
// ss->ConnectShaders ("layer1", "param1", "layer2", "param2");
// ... and other connections ...
// ss->ShaderGroupEnd ();
//
// It looks so simple, and it really is, except that the way this
// testshade program works is that all the Parameter() and Shader()
// calls are done inside getargs(), as it walks through the command
// line arguments, whereas the connections accumulate and have
// to be processed at the end. Bear with us.
// Start the shader group and grab a reference to it.
shadergroup = shadingsys->ShaderGroupBegin (groupname);
// Get the command line arguments. That will set up all the shader
// instances and their parameters for the group.
getargs (argc, argv);
if (! shadergroup) {
std::cerr << "ERROR: Invalid shader group. Exiting testshade.\n";
return EXIT_FAILURE;
}
shadingsys->attribute (shadergroup.get(), "groupname", groupname);
// Now set up the connections
for (size_t i = 0; i < connections.size(); i += 4) {
if (i+3 < connections.size()) {
std::cout << "Connect "
<< connections[i] << "." << connections[i+1]
<< " to " << connections[i+2] << "." << connections[i+3]
<< "\n";
shadingsys->ConnectShaders (connections[i].c_str(),
connections[i+1].c_str(),
connections[i+2].c_str(),
connections[i+3].c_str());
}
}
// End the group
shadingsys->ShaderGroupEnd ();
if (verbose || do_oslquery) {
std::string pickle;
shadingsys->getattribute (shadergroup.get(), "pickle", pickle);
std::cout << "Shader group:\n---\n" << pickle << "\n---\n";
std::cout << "\n";
ustring groupname;
shadingsys->getattribute (shadergroup.get(), "groupname", groupname);
std::cout << "Shader group \"" << groupname << "\" layers are:\n";
int num_layers = 0;
shadingsys->getattribute (shadergroup.get(), "num_layers", num_layers);
if (num_layers > 0) {
std::vector<const char *> layers (size_t(num_layers), NULL);
shadingsys->getattribute (shadergroup.get(), "layer_names",
TypeDesc(TypeDesc::STRING, num_layers),
&layers[0]);
for (int i = 0; i < num_layers; ++i) {
std::cout << " " << (layers[i] ? layers[i] : "<unnamed>") << "\n";
if (do_oslquery) {
OSLQuery q;
q.init (shadergroup.get(), i);
for (size_t p = 0; p < q.nparams(); ++p) {
const OSLQuery::Parameter *param = q.getparam(p);
std::cout << "\t" << (param->isoutput ? "output " : "")
<< param->type << ' ' << param->name << "\n";
}
}
}
}
std::cout << "\n";
}
if (archivegroup.size())
shadingsys->archive_shadergroup (shadergroup.get(), archivegroup);
if (outputfiles.size() != 0)
std::cout << "\n";
// Set up the named transformations, including shader and object.
// For this test application, we just do this statically; in a real
// renderer, the global named space (like "myspace") would probably
// be static, but shader and object spaces may be different for each
// object.
setup_transformations (rend, Mshad, Mobj);
// Set up the image outputs requested on the command line
setup_output_images (shadingsys, shadergroup);
if (debug)
test_group_attributes (shadergroup.get());
if (num_threads < 1)
num_threads = boost::thread::hardware_concurrency();
double setuptime = timer.lap ();
// Allow a settable number of iterations to "render" the whole image,
// which is useful for time trials of things that would be too quick
// to accurately time for a single iteration
for (int iter = 0; iter < iters; ++iter) {
OIIO::ROI roi (0, xres, 0, yres);
if (use_shade_image)
OSL::shade_image (*shadingsys, *shadergroup, NULL,
*outputimgs[0], outputvarnames,
pixelcenters ? ShadePixelCenters : ShadePixelGrid,
roi, num_threads);
else {
bool save = (iter == (iters-1)); // save on last iteration
#if 0
shade_region (shadergroup.get(), roi, save);
#else
OIIO::ImageBufAlgo::parallel_image (
boost::bind (shade_region, shadergroup.get(), _1, save),
roi, num_threads);
#endif
}
// If any reparam was requested, do it now
if (reparams.size() && reparam_layer.size()) {
for (size_t p = 0; p < reparams.size(); ++p) {
const ParamValue &pv (reparams[p]);
shadingsys->ReParameter (*shadergroup, reparam_layer.c_str(),
pv.name().c_str(), pv.type(),
pv.data());
}
}
}
double runtime = timer.lap();
if (outputfiles.size() == 0)
std::cout << "\n";
// Write the output images to disk
for (size_t i = 0; i < outputimgs.size(); ++i) {
if (outputimgs[i]) {
if (! print_outputs) {
std::string filename = outputimgs[i]->name();
// JPEG, GIF, and PNG images should be automatically saved
// as sRGB because they are almost certainly supposed to
// be displayed on web pages.
using namespace OIIO;
if (Strutil::iends_with (filename, ".jpg") ||
Strutil::iends_with (filename, ".jpeg") ||
Strutil::iends_with (filename, ".gif") ||
Strutil::iends_with (filename, ".png")) {
ImageBuf ccbuf;
ImageBufAlgo::colorconvert (ccbuf, *outputimgs[i],
"linear", "sRGB", false,
"", "");
ccbuf.set_write_format (outputimgs[i]->spec().format);
ccbuf.write (filename);
} else {
outputimgs[i]->write (filename);
}
}
delete outputimgs[i];
outputimgs[i] = NULL;
}
}
// Print some debugging info
if (debug || runstats || profile) {
double writetime = timer.lap();
std::cout << "\n";
std::cout << "Setup: " << OIIO::Strutil::timeintervalformat (setuptime,2) << "\n";
std::cout << "Run : " << OIIO::Strutil::timeintervalformat (runtime,2) << "\n";
std::cout << "Write: " << OIIO::Strutil::timeintervalformat (writetime,2) << "\n";
std::cout << "\n";
std::cout << shadingsys->getstats (5) << "\n";
OIIO::TextureSystem *texturesys = shadingsys->texturesys();
if (texturesys)
std::cout << texturesys->getstats (5) << "\n";
std::cout << ustring::getstats() << "\n";
}
// We're done with the shading system now, destroy it
shadergroup.reset (); // Must release this before destroying shadingsys
delete shadingsys;
return EXIT_SUCCESS;
}
static bool
write_mipmap (ImageBufAlgo::MakeTextureMode mode,
ImageBuf &img, const ImageSpec &outspec_template,
std::string outputfilename, ImageOutput *out,
TypeDesc outputdatatype, bool mipmap,
Filter2D *filter, const ImageSpec &configspec,
std::ostream &outstream,
double &stat_writetime, double &stat_miptime)
{
bool envlatlmode = (mode == ImageBufAlgo::MakeTxEnvLatl);
ImageSpec outspec = outspec_template;
outspec.set_format (outputdatatype);
if (mipmap && !out->supports ("multiimage") && !out->supports ("mipmap")) {
outstream << "maketx ERROR: \"" << outputfilename
<< "\" format does not support multires images\n";
return false;
}
if (! mipmap && ! strcmp (out->format_name(), "openexr")) {
// Send hint to OpenEXR driver that we won't specify a MIPmap
outspec.attribute ("openexr:levelmode", 0 /* ONE_LEVEL */);
}
if (mipmap && ! strcmp (out->format_name(), "openexr")) {
outspec.attribute ("openexr:roundingmode", 0 /* ROUND_DOWN */);
}
// OpenEXR always uses border sampling for environment maps
bool src_samples_border;
if (envlatlmode && !strcmp(out->format_name(), "openexr")) {
src_samples_border = true;
outspec.attribute ("oiio:updirection", "y");
outspec.attribute ("oiio:sampleborder", 1);
}
if (envlatlmode && src_samples_border)
fix_latl_edges (img);
Timer writetimer;
if (! out->open (outputfilename.c_str(), outspec)) {
outstream << "maketx ERROR: Could not open \"" << outputfilename
<< "\" : " << out->geterror() << "\n";
return false;
}
// Write out the image
bool verbose = configspec.get_int_attribute ("maketx:verbose");
if (verbose) {
outstream << " Writing file: " << outputfilename << std::endl;
outstream << " Filter \"" << filter->name() << "\" width = "
<< filter->width() << "\n";
outstream << " Top level is " << formatres(outspec) << std::endl;
}
if (! img.write (out)) {
// ImageBuf::write transfers any errors from the ImageOutput to
// the ImageBuf.
outstream << "maketx ERROR: Write failed \" : " << img.geterror() << "\n";
out->close ();
return false;
}
stat_writetime += writetimer();
if (mipmap) { // Mipmap levels:
if (verbose)
outstream << " Mipmapping...\n" << std::flush;
std::vector<std::string> mipimages;
std::string mipimages_unsplit = configspec.get_string_attribute ("maketx:mipimages");
if (mipimages_unsplit.length())
Strutil::split (mipimages_unsplit, mipimages, ";");
ImageBuf tmp;
ImageBuf *big = &img, *small = &tmp;
while (outspec.width > 1 || outspec.height > 1) {
Timer miptimer;
ImageSpec smallspec;
if (mipimages.size()) {
// Special case -- the user specified a custom MIP level
small->reset (mipimages[0]);
small->read (0, 0, true, TypeDesc::FLOAT);
smallspec = small->spec();
if (smallspec.nchannels != outspec.nchannels) {
outstream << "WARNING: Custom mip level \"" << mipimages[0]
<< " had the wrong number of channels.\n";
ImageBuf *t = new ImageBuf (mipimages[0], smallspec);
ImageBufAlgo::setNumChannels(*t, *small, outspec.nchannels);
std::swap (t, small);
delete t;
}
smallspec.tile_width = outspec.tile_width;
smallspec.tile_height = outspec.tile_height;
smallspec.tile_depth = outspec.tile_depth;
mipimages.erase (mipimages.begin());
} else {
// Resize a factor of two smaller
smallspec = outspec;
smallspec.width = big->spec().width;
smallspec.height = big->spec().height;
smallspec.depth = big->spec().depth;
if (smallspec.width > 1)
smallspec.width /= 2;
if (smallspec.height > 1)
smallspec.height /= 2;
smallspec.full_width = smallspec.width;
smallspec.full_height = smallspec.height;
smallspec.full_depth = smallspec.depth;
smallspec.set_format (TypeDesc::FLOAT);
// Trick: to get the resize working properly, we reset
// both display and pixel windows to match, and have 0
// offset, AND doctor the big image to have its display
// and pixel windows match. Don't worry, the texture
// engine doesn't care what the upper MIP levels have
// for the window sizes, it uses level 0 to determine
// the relatinship between texture 0-1 space (display
// window) and the pixels.
smallspec.x = 0;
smallspec.y = 0;
smallspec.full_x = 0;
smallspec.full_y = 0;
small->alloc (smallspec); // Realocate with new size
big->set_full (big->xbegin(), big->xend(), big->ybegin(),
big->yend(), big->zbegin(), big->zend());
if (filter->name() == "box" && filter->width() == 1.0f)
ImageBufAlgo::parallel_image (boost::bind(resize_block, small, big, _1, envlatlmode),
OIIO::get_roi(small->spec()));
else
ImageBufAlgo::parallel_image (boost::bind(resize_block_HQ, small, big, _1, filter),
OIIO::get_roi(small->spec()));
}
stat_miptime += miptimer();
outspec = smallspec;
outspec.set_format (outputdatatype);
if (envlatlmode && src_samples_border)
fix_latl_edges (*small);
Timer writetimer;
// If the format explicitly supports MIP-maps, use that,
// otherwise try to simulate MIP-mapping with multi-image.
ImageOutput::OpenMode mode = out->supports ("mipmap") ?
ImageOutput::AppendMIPLevel : ImageOutput::AppendSubimage;
if (! out->open (outputfilename.c_str(), outspec, mode)) {
outstream << "maketx ERROR: Could not append \"" << outputfilename
<< "\" : " << out->geterror() << "\n";
return false;
}
if (! small->write (out)) {
// ImageBuf::write transfers any errors from the
// ImageOutput to the ImageBuf.
outstream << "maketx ERROR writing \"" << outputfilename
<< "\" : " << small->geterror() << "\n";
out->close ();
return false;
}
stat_writetime += writetimer();
if (verbose) {
outstream << " " << formatres(smallspec) << std::endl;
}
std::swap (big, small);
}
}
if (verbose)
outstream << " Wrote file: " << outputfilename << std::endl;
writetimer.reset ();
writetimer.start ();
if (! out->close ()) {
outstream << "maketx ERROR writing \"" << outputfilename
<< "\" : " << out->geterror() << "\n";
return false;
}
stat_writetime += writetimer ();
return true;
}
