| Message ID | 020962e08d4ed88c332f3363cfb857dc416e987d.1657554896.git.geert@linux-m68k.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [libdrm] modetest: Fix mode_vrefresh() for interlace/dblscan/vscan | expand |
diff --git a/tests/modetest/modetest.c b/tests/modetest/modetest.c index 8ff6c80da8ba6db6..9ceb5688f7683ffc 100644 --- a/tests/modetest/modetest.c +++ b/tests/modetest/modetest.c @@ -137,8 +137,19 @@ static inline int64_t U642I64(uint64_t val) static float mode_vrefresh(drmModeModeInfo *mode) { - return mode->clock * 1000.00 - / (mode->htotal * mode->vtotal); + unsigned int num, den; + + num = mode->clock; + den = mode->htotal * mode->vtotal; + + if (mode->flags & DRM_MODE_FLAG_INTERLACE) + num *= 2; + if (mode->flags & DRM_MODE_FLAG_DBLSCAN) + den *= 2; + if (mode->vscan > 1) + den *= mode->vscan; + + return num * 1000.00 / den; } #define bit_name_fn(res) \
mode_vrefresh() does not take into account interlaced, doublescan, and multiscan modes, leading to incorrect refresh rates. Fix this, based on drm_mode_vrefresh() in Linux. Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> --- tests/modetest/modetest.c | 15 +++++++++++++-- 1 file changed, 13 insertions(+), 2 deletions(-)