diff options
| -rw-r--r-- | source/fitz/shade.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/source/fitz/shade.c b/source/fitz/shade.c index faf8b67c..63089235 100644 --- a/source/fitz/shade.c +++ b/source/fitz/shade.c @@ -314,6 +314,7 @@ fz_process_shade_type4(fz_context *ctx, fz_shade *shade, fz_matrix ctm, fz_mesh_ const float *c0 = shade->u.m.c0; const float *c1 = shade->u.m.c1; float x, y, c[FZ_MAX_COLORS]; + int first_triangle = 1; fz_try(ctx) { @@ -326,8 +327,22 @@ fz_process_shade_type4(fz_context *ctx, fz_shade *shade, fz_matrix ctm, fz_mesh_ c[i] = read_sample(ctx, stream, bpcomp, c0[i], c1[i]); fz_prepare_vertex(ctx, painter, vd, ctm, x, y, c); + if (first_triangle) + { + if (flag != 0) + { + fz_warn(ctx, "ignoring non-zero edge flags for first vertex in mesh"); + flag = 0; + } + first_triangle = 0; + } + switch (flag) { + default: + fz_warn(ctx, "ignoring out of range edge flag in mesh"); + /* fallthrough */ + case 0: /* start new triangle */ SWAP(va, vd); |