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| author | Oneric <oneric@oneric.stub> | 2022-03-16 19:50:43 +0100 |
|---|---|---|
| committer | Oneric <oneric@oneric.stub> | 2022-03-17 23:58:33 +0100 |
| commit | 9608c8c838e1046601c27f6473e23654fedf1716 (patch) | |
| tree | b1d4c88bc34b9db0899743af58cd3628a22b89b1 /libass/ass_render.c | |
| parent | 5f0e8450f834894b2745238e3d32ff4878710ec8 (diff) | |
| download | libass-9608c8c838e1046601c27f6473e23654fedf1716.tar.bz2 libass-9608c8c838e1046601c27f6473e23654fedf1716.tar.xz | |
asm/x86: check highest supported leaf for cpuid
If a higher then supported leaf is requested, at least Intel processors
will silently return the data of the highest supported leaf,
invalidating the following feature tests.
Reported in: https://github.com/libass/libass/pull/603
Diffstat (limited to 'libass/ass_render.c')
| -rw-r--r-- | libass/ass_render.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/libass/ass_render.c b/libass/ass_render.c index 40b6d5d..cf22bec 100644 --- a/libass/ass_render.c +++ b/libass/ass_render.c @@ -75,9 +75,11 @@ ASS_Renderer *ass_renderer_init(ASS_Library *library) // images_root and related stuff is zero-filled in calloc #if CONFIG_ASM && ARCH_X86 - if (has_avx2()) + bool sse2, avx2; + ass_cpu_capabilities(&sse2, &avx2); + if (avx2) priv->engine = &ass_bitmap_engine_avx2; - else if (has_sse2()) + else if (sse2) priv->engine = &ass_bitmap_engine_sse2; else priv->engine = &ass_bitmap_engine_c; |