Skip to content

api: IBA::make_texture now honors "maketx:threads" hint #5014

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
lgritz merged 2 commits into from
Jan 28, 2026
Merged

api: IBA::make_texture now honors "maketx:threads" hint #5014

Show file tree
Hide file tree
Changes from 1 commit
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
05afc80
api: IBA::make_texture now honors "maketx:threads" hint
lgritz Jan 26, 2026
1c42dea
touch-ups
lgritz Jan 28, 2026
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
1 change: 1 addition & 0 deletions src/include/OpenImageIO/imagebufalgo.h
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -2247,6 +2247,7 @@ enum MakeTextureMode {
/// the coordinates for normal maps. ("")
/// - `maketx:verbose` (int) : How much detail should go to outstream (0).
/// - `maketx:runstats` (int) : If nonzero, print run stats to outstream (0).
/// - `maketx:threads` (int) : Number of threads to use (0 = auto).
/// - `maketx:resize` (int) : If nonzero, resize to power of 2. (0)
/// - `maketx:keepaspect` (int): If nonzero, save aspect ratio to metadata. (0)
/// - `maketx:nomipmap` (int) : If nonzero, only output the top MIP level (0).
Expand Down
107 changes: 61 additions & 46 deletions src/libOpenImageIO/maketexture.cpp
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -510,12 +510,11 @@ bump_to_bumpslopes(ImageBuf& dst, const ImageBuf& src,
return false;
}
is_height = false;
} else if (Strutil::iequals(
bumpformat,
"auto")) { // guess input bump format by analyzing channel count and component
} else if (Strutil::iequals(bumpformat, "auto")) {
// guess input bump format by analyzing channel count and component
if (src.spec().nchannels > 2
&& !ImageBufAlgo::isMonochrome(src)) // maybe it's a normal map?
is_height = false;
&& !ImageBufAlgo::isMonochrome(src, 0.0f, ROI(), nthreads))
is_height = false; // maybe it's a normal map?
else
is_height = true;
} else {
Expand Down Expand Up @@ -705,6 +704,8 @@ write_mipmap(ImageBufAlgo::MakeTextureMode mode, std::shared_ptr<ImageBuf>& img,
ImageSpec outspec = outspec_template;
outspec.set_format(outputdatatype);

int nthreads = configspec.get_int_attribute("maketx:threads");

// Going from float to half is prone to generating Inf values if we had
// any floats that were out of the range that half can represent. Nobody
// wants Inf in textures; better to clamp.
Expand Down Expand Up @@ -783,7 +784,8 @@ write_mipmap(ImageBufAlgo::MakeTextureMode mode, std::shared_ptr<ImageBuf>& img,

if (clamp_half) {
std::shared_ptr<ImageBuf> tmp(new ImageBuf);
ImageBufAlgo::clamp(*tmp, *img, -HALF_MAX, HALF_MAX, true);
ImageBufAlgo::clamp(*tmp, *img, -HALF_MAX, HALF_MAX, true, ROI(),
nthreads);
std::swap(tmp, img);
}
if (!img->write(out)) {
Expand Down Expand Up @@ -831,7 +833,8 @@ write_mipmap(ImageBufAlgo::MakeTextureMode mode, std::shared_ptr<ImageBuf>& img,
std::shared_ptr<ImageBuf> t(new ImageBuf(smallspec));
ImageBufAlgo::channels(*t, *small, outspec.nchannels,
cspan<int>(), cspan<float>(),
cspan<std::string>(), true);
cspan<std::string>(), true,
nthreads);
std::swap(t, small);
}
smallspec.tile_width = outspec.tile_width;
Expand Down Expand Up @@ -863,7 +866,7 @@ write_mipmap(ImageBufAlgo::MakeTextureMode mode, std::shared_ptr<ImageBuf>& img,
// 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
// the relationship between texture 0-1 space (display
// window) and the pixels.
smallspec.x = 0;
smallspec.y = 0;
Expand All @@ -875,12 +878,11 @@ write_mipmap(ImageBufAlgo::MakeTextureMode mode, std::shared_ptr<ImageBuf>& img,

if (filtername == "box" && !orig_was_overscan
&& sharpen <= 0.0f) {
ImageBufAlgo::parallel_image(get_roi(small->spec()),
std::bind(resize_block,
std::ref(*small),
std::cref(*img), _1,
envlatlmode,
allow_shift));
ImageBufAlgo::parallel_image(
get_roi(small->spec()), paropt(nthreads), [&](ROI roi) {
resize_block(*small, *img, roi, envlatlmode,
allow_shift);
});
} else {
Filter2D* filter = setup_filter(small->spec(), img->spec(),
filtername);
Expand All @@ -901,23 +903,27 @@ write_mipmap(ImageBufAlgo::MakeTextureMode mode, std::shared_ptr<ImageBuf>& img,
OIIO::print(outstream, "\n");
}
if (do_highlight_compensation)
ImageBufAlgo::rangecompress(*img, *img);
ImageBufAlgo::rangecompress(*img, *img, false, ROI(),
nthreads);
if (sharpen > 0.0f && sharpen_first) {
std::shared_ptr<ImageBuf> sharp(new ImageBuf);
bool uok = ImageBufAlgo::unsharp_mask(*sharp, *img,
sharpenfilt, 3.0,
sharpen, 0.0f);
sharpenfilt, 3.0f,
sharpen, 0.0f,
ROI(), nthreads);
if (!uok)
errorfmt("{}", sharp->geterror());
std::swap(img, sharp);
}
ImageBufAlgo::resize(*small, *img,
{ make_pv("filterptr", filter) });
{ make_pv("filterptr", filter) },
ROI(), nthreads);
if (sharpen > 0.0f && !sharpen_first) {
std::shared_ptr<ImageBuf> sharp(new ImageBuf);
bool uok = ImageBufAlgo::unsharp_mask(*sharp, *small,
sharpenfilt, 3.0,
sharpen, 0.0f);
sharpenfilt, 3.0f,
sharpen, 0.0f,
ROI(), nthreads);
if (!uok)
errorfmt("{}", sharp->geterror());
std::swap(small, sharp);
Expand All @@ -926,13 +932,14 @@ write_mipmap(ImageBufAlgo::MakeTextureMode mode, std::shared_ptr<ImageBuf>& img,
ImageBufAlgo::rangeexpand(*small, *small);
Comment thread
jessey-git marked this conversation as resolved.
Outdated
ImageBufAlgo::clamp(*small, *small, 0.0f,
std::numeric_limits<float>::max(),
true);
true, ROI(), nthreads);
}
Filter2D::destroy(filter);
}
}
if (clamp_half)
ImageBufAlgo::clamp(*small, *small, -HALF_MAX, HALF_MAX, true);
ImageBufAlgo::clamp(*small, *small, -HALF_MAX, HALF_MAX, true,
ROI(), nthreads);

double this_miptime = miptimer();
stat_miptime += this_miptime;
Expand Down Expand Up @@ -1093,6 +1100,8 @@ make_texture_impl(ImageBufAlgo::MakeTextureMode mode, const ImageBuf* input,
if (!configspec.tile_depth)
configspec.tile_depth = 1;

int nthreads = configspec.get_int_attribute("maketx:threads");

bool ignore_unassoc = configspec.get_int_attribute("maketx:ignore_unassoc");
ImageSpec inconfig;
if (ignore_unassoc)
Expand Down Expand Up @@ -1257,8 +1266,7 @@ make_texture_impl(ImageBufAlgo::MakeTextureMode mode, const ImageBuf* input,
bool ok = true;
OIIO_DISPATCH_COMMON_TYPES(ok, "lightprobe_to_envlatl",
lightprobe_to_envlatl, src->spec().format,
*latlong, *src, true);
// lightprobe_to_envlatl(*latlong, *src, true);
*latlong, *src, true, ROI(), nthreads);
// Carry on with the lat-long environment map from here on out
mode = ImageBufAlgo::MakeTxEnvLatl;
src = latlong;
Expand All @@ -1269,7 +1277,8 @@ make_texture_impl(ImageBufAlgo::MakeTextureMode mode, const ImageBuf* input,
if (Strutil::iequals(configspec.get_string_attribute("maketx:bumprange",
"auto"),
"auto"))
src_pixel_stats = ImageBufAlgo::computePixelStats(*src);
src_pixel_stats = ImageBufAlgo::computePixelStats(*src, ROI(),
nthreads);

ImageSpec newspec = src->spec();
newspec.tile_width = newspec.tile_height = 0;
Expand All @@ -1286,7 +1295,8 @@ make_texture_impl(ImageBufAlgo::MakeTextureMode mode, const ImageBuf* input,
bool ok;
OIIO_DISPATCH_COMMON_TYPES(ok, "bump_to_bumpslopes", bump_to_bumpslopes,
src->spec().format, *bumpslopes, *src,
configspec, src_pixel_stats, outstream);
configspec, src_pixel_stats, outstream,
ROI(), nthreads);
// bump_to_bumpslopes(*bumpslopes, *src);
mode = ImageBufAlgo::MakeTxTexture;
src = bumpslopes;
Expand Down Expand Up @@ -1330,7 +1340,8 @@ make_texture_impl(ImageBufAlgo::MakeTextureMode mode, const ImageBuf* input,
std::vector<imagesize_t> hist;

for (int i = 0; i < channels; i++) {
hist = ImageBufAlgo::histogram(*src, i, bins, 0.0f, 1.0f);
hist = ImageBufAlgo::histogram(*src, i, bins, 0.0f, 1.0f, false,
ROI(), nthreads);

// Turn the histogram into a non-normalized CDF
for (uint64_t j = 1; j < bins; j++) {
Expand Down Expand Up @@ -1389,7 +1400,7 @@ make_texture_impl(ImageBufAlgo::MakeTextureMode mode, const ImageBuf* input,
bool compute_stats = (constant_color_detect || opaque_detect
|| compute_average_color || monochrome_detect);
if (compute_stats) {
pixel_stats = ImageBufAlgo::computePixelStats(*src);
pixel_stats = ImageBufAlgo::computePixelStats(*src, ROI(), nthreads);
}
double stat_pixelstatstime = alltime.lap();
STATUS("pixelstats", stat_pixelstatstime);
Expand Down Expand Up @@ -1420,7 +1431,7 @@ make_texture_impl(ImageBufAlgo::MakeTextureMode mode, const ImageBuf* input,
newspec.full_height = newspec.height;
newspec.full_depth = newspec.depth;
src->reset(newspec);
ImageBufAlgo::fill(*src, constantColor);
ImageBufAlgo::fill(*src, constantColor, ROI(), nthreads);
if (verbose) {
outstream << " Constant color image detected. ";
outstream << "Creating " << newspec.width << "x"
Expand Down Expand Up @@ -1455,14 +1466,14 @@ make_texture_impl(ImageBufAlgo::MakeTextureMode mode, const ImageBuf* input,
&& src->spec().alpha_channel < 0
&& pixel_stats.avg[0] == pixel_stats.avg[1]
&& pixel_stats.avg[0] == pixel_stats.avg[2]
&& ImageBufAlgo::isMonochrome(*src)) {
&& ImageBufAlgo::isMonochrome(*src, 0.0f, ROI(), nthreads)) {
if (verbose)
OIIO::print(
outstream,
" Monochrome image detected. Converting to single channel texture.\n");
std::shared_ptr<ImageBuf> newsrc(new ImageBuf(src->spec()));
ImageBufAlgo::channels(*newsrc, *src, 1, cspan<int>(), cspan<float>(),
cspan<std::string>(), true);
cspan<std::string>(), true, nthreads);
Comment thread
jessey-git marked this conversation as resolved.
newsrc->specmod().default_channel_names();
std::swap(src, newsrc);
}
Expand All @@ -1475,7 +1486,8 @@ make_texture_impl(ImageBufAlgo::MakeTextureMode mode, const ImageBuf* input,
<< std::endl;
std::shared_ptr<ImageBuf> newsrc(new ImageBuf(src->spec()));
ImageBufAlgo::channels(*newsrc, *src, nchannels, cspan<int>(),
cspan<float>(), cspan<std::string>(), true);
cspan<float>(), cspan<std::string>(), true,
nthreads);
std::swap(src, newsrc);
}

Expand Down Expand Up @@ -1663,7 +1675,8 @@ make_texture_impl(ImageBufAlgo::MakeTextureMode mode, const ImageBuf* input,
&& (srcspec.format.basetype == TypeDesc::FLOAT
|| srcspec.format.basetype == TypeDesc::HALF
|| srcspec.format.basetype == TypeDesc::DOUBLE)
&& !ImageBufAlgo::fixNonFinite(*src, *src, fixmode, &pixelsFixed)) {
&& !ImageBufAlgo::fixNonFinite(*src, *src, fixmode, &pixelsFixed, ROI(),
nthreads)) {
errorfmt("Error fixing nans/infs.");
return false;
}
Expand All @@ -1677,7 +1690,7 @@ make_texture_impl(ImageBufAlgo::MakeTextureMode mode, const ImageBuf* input,
|| srcspec.format.basetype == TypeDesc::HALF
|| srcspec.format.basetype == TypeDesc::DOUBLE)) {
int found_nonfinite = 0;
ImageBufAlgo::parallel_image(get_roi(srcspec),
ImageBufAlgo::parallel_image(get_roi(srcspec), nthreads,
std::bind(check_nan_block, std::ref(*src),
_1, std::ref(found_nonfinite)));
if (found_nonfinite) {
Expand Down Expand Up @@ -1736,7 +1749,7 @@ make_texture_impl(ImageBufAlgo::MakeTextureMode mode, const ImageBuf* input,
outstream << " Unpremulting image..." << std::endl;

if (!ImageBufAlgo::colorconvert(*ccSrc, *src, processor.get(),
unpremult)) {
unpremult, ROI(), nthreads)) {
errorfmt("Error applying color conversion to image.");
return false;
}
Expand Down Expand Up @@ -1838,10 +1851,12 @@ make_texture_impl(ImageBufAlgo::MakeTextureMode mode, const ImageBuf* input,
toplevel.reset(new ImageBuf(dstspec));
if ((resize_filter == "box" || resize_filter == "triangle")
&& !orig_was_overscan) {
ImageBufAlgo::parallel_image(
get_roi(dstspec),
std::bind(resize_block, std::ref(*toplevel), std::cref(*src),
_1, envlatlmode, allow_shift != 0));
ImageBufAlgo::parallel_image(get_roi(dstspec), paropt(nthreads),
[&](ROI roi) {
resize_block(*toplevel, *src, roi,
envlatlmode,
allow_shift != 0);
});
} else {
Filter2D* filter = setup_filter(toplevel->spec(), src->spec(),
resize_filter);
Expand All @@ -1850,7 +1865,8 @@ make_texture_impl(ImageBufAlgo::MakeTextureMode mode, const ImageBuf* input,
return false;
}
ImageBufAlgo::resize(*toplevel, *src,
{ make_pv("filterptr", filter) });
{ make_pv("filterptr", filter) }, ROI(),
nthreads);
Filter2D::destroy(filter);
}
}
Expand Down Expand Up @@ -1906,12 +1922,11 @@ make_texture_impl(ImageBufAlgo::MakeTextureMode mode, const ImageBuf* input,
addlHashData << "keepaspect=1 ";

const int sha1_blocksize = 256;
std::string hash_digest
= configspec.get_int_attribute("maketx:hash", 1)
? ImageBufAlgo::computePixelHashSHA1(*toplevel,
addlHashData.str(),
ROI::All(), sha1_blocksize)
: "";
std::string hash_digest = configspec.get_int_attribute("maketx:hash", 1)
? ImageBufAlgo::computePixelHashSHA1(
*toplevel, addlHashData.str(), ROI::All(),
sha1_blocksize, nthreads)
: "";
if (hash_digest.length()) {
if (out->supports("arbitrary_metadata")) {
dstspec.attribute("oiio:SHA-1", hash_digest);
Expand Down
Loading