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-rw-r--r--src/diffraction-gpu.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/src/diffraction-gpu.c b/src/diffraction-gpu.c
index a2d1c47a..851ed70c 100644
--- a/src/diffraction-gpu.c
+++ b/src/diffraction-gpu.c
@@ -239,6 +239,12 @@ void get_diffraction_gpu(struct gpu_context *gctx, struct image *image,
float val, tt;
val = diff_ptr[x + image->width*y];
+ if ( isinf(val) ) {
+ ERROR("Extracting infinity at %i,%i\n", x, y);
+ }
+ if ( val < 0.0 ) {
+ ERROR("Extracting negative at %i,%i\n", x, y);
+ }
tt = tt_ptr[x + image->width*y];
image->data[x + image->width*y] = val;