wyj/GR-raytracing
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Optics: bound cache-only bright PSF splats

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wyj committed 2026-08-29 20:02:45 -04:00
1 parent 6f8ec50c64
commit e47005ea6b
7 files changed
+216 -72
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tests/test_frame.c
+28 -8
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@@ -27,7 +27,7 @@ int main(void) {
goto done;
const size_t images =
frame_splat_catalog(&mesh, &catalog, hdr, width, height, test_exposure,
&psf, NULL, 0, 1, NULL, NULL, NULL);
&psf, NULL, INFINITY, 1.0, 0, 1, NULL, NULL, NULL);
if (images != 1 || hdr[3 * (50 * width + 50)] <= 0.0) {
fputs("flat-space inverse lens-map regression failed\n", stderr);
goto done;
@@ -44,12 +44,12 @@ int main(void) {
omp_set_dynamic(0);
omp_set_num_threads(1);
const size_t serial_images = frame_splat_catalog(
&mesh, &catalog, serial_hdr, width, height, test_exposure, &psf, NULL, 0,
1, NULL, NULL, NULL);
&mesh, &catalog, serial_hdr, width, height, test_exposure, &psf, NULL,
INFINITY, 1.0, 0, 1, NULL, NULL, NULL);
omp_set_num_threads(4);
const size_t parallel_images = frame_splat_catalog(
&mesh, &catalog, parallel_hdr, width, height, test_exposure, &psf, NULL, 0,
1, NULL, NULL, NULL);
&mesh, &catalog, parallel_hdr, width, height, test_exposure, &psf, NULL,
INFINITY, 1.0, 0, 1, NULL, NULL, NULL);
omp_set_num_threads(original_threads);
for (int value = 0; value < width * height * 3; ++value)
if (fabs(serial_hdr[value] - parallel_hdr[value]) >
@@ -105,7 +105,7 @@ int main(void) {
memset(reference_hdr, 0, (size_t)width * height * 3 * sizeof *reference_hdr);
if (splat_moffat_cached(cached_hdr, width, height, 50.0 + phases[phase][0],
50.0 + phases[phase][1], (LinearRgb){1.0, 1.0, 1.0},
1.0, &psf, &cache) != 0) {
1.0, &psf, &cache, 1.0) != 0) {
fputs("ordinary PSF cache unexpectedly fell back\n", stderr);
free(cached_hdr); free(reference_hdr); psf_kernel_cache_destroy(&cache);
goto done;
@@ -127,11 +127,30 @@ int main(void) {
/* A bright event must avoid a cached hard cutoff by selecting the direct
* reference path when the requested support exceeds the cache. */
if (splat_moffat_cached(cached_hdr, width, height, 50.5, 50.5,
(LinearRgb){1.0, 1.0, 1.0}, 1000.0, &psf, &cache) != 1) {
(LinearRgb){1.0, 1.0, 1.0}, 1000.0, &psf, &cache, 1.0) != 1) {
fputs("bright PSF direct-fallback regression failed\n", stderr);
free(cached_hdr); free(reference_hdr); psf_kernel_cache_destroy(&cache);
goto done;
}
memset(cached_hdr, 0, (size_t)width * height * 3 * sizeof *cached_hdr);
memset(reference_hdr, 0, (size_t)width * height * 3 * sizeof *reference_hdr);
if (splat_moffat_cached(cached_hdr, width, height, 50.5, 50.5,
(LinearRgb){1.0, 1.0, 1.0}, 1000.0, &psf, &cache,
1000.0) != 2) {
fputs("bright PSF cached-wing-clipping regression failed\n", stderr);
free(cached_hdr); free(reference_hdr); psf_kernel_cache_destroy(&cache);
goto done;
}
splat_moffat_direct(reference_hdr, width, height, 50.5, 50.5,
(LinearRgb){1.0, 1.0, 1.0}, 1000.0, &psf);
const size_t center = 3 * (50 * width + 50);
if (cached_hdr[center] <= 0.0 ||
fabs(cached_hdr[center] - reference_hdr[center]) >
4e-5 * reference_hdr[center]) {
fputs("cached-wing clipping changed the bright PSF core\n", stderr);
free(cached_hdr); free(reference_hdr); psf_kernel_cache_destroy(&cache);
goto done;
}
free(cached_hdr);
free(reference_hdr);
psf_kernel_cache_destroy(&cache);
@@ -154,7 +173,8 @@ int main(void) {
if (frame_lens_mesh_build_coarse(&fine_mesh, width, height, 1, 0.1) ||
frame_lens_mesh_trace(&fine_mesh, &spacetime, &observer, &trace) ||
frame_splat_catalog(&fine_mesh, &fine_catalog, hdr, width, height,
test_exposure, &psf, NULL, 0, 1, NULL, NULL, NULL) != 1) {
test_exposure, &psf, NULL, INFINITY, 1.0, 0, 1, NULL,
NULL, NULL) != 1) {
fputs("fine source-triangle containment regression failed\n", stderr);
frame_lens_mesh_destroy(&fine_mesh);
goto done;