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better fns

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This commit is contained in:
Vaxry 2024-10-07 19:34:12 +01:00
parent 9ebce0b055
commit c46c55e2cd
1 changed files with 8 additions and 2 deletions
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10
src/backend/drm/impl/Atomic.cpp
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@ -272,10 +272,16 @@ bool Aquamarine::CDRMAtomicImpl::prepareConnector(Hyprutils::Memory::CSharedPoin
if (!connector->crtc->props.ctm)
connector->backend->backend->log(AQ_LOG_ERROR, "atomic drm: failed to commit ctm: no ctm prop support");
else {
static auto doubleToS3132Fixed = [](const double val) -> uint64_t {
const uint64_t result = std::abs(val) * (1ULL << 32);
if (val < 0)
return result | 1ULL << 63;
return result;
};
drm_color_ctm ctm = {0};
for (size_t i = 0; i < 9; ++i) {
const double val = data.ctm->getMatrix()[i];
ctm.matrix[i] = static_cast<uint64_t>(val * std::pow(2, 32));
ctm.matrix[i] = doubleToS3132Fixed(data.ctm->getMatrix()[i]);
}
if (drmModeCreatePropertyBlob(connector->backend->gpu->fd, &ctm, sizeof(drm_color_ctm), &data.atomic.ctmBlob)) {