diff options
Diffstat (limited to 'src/gui/rhi/qrhimetal.mm')
-rw-r--r-- | src/gui/rhi/qrhimetal.mm | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/src/gui/rhi/qrhimetal.mm b/src/gui/rhi/qrhimetal.mm index 770786db98..2d85c86bf0 100644 --- a/src/gui/rhi/qrhimetal.mm +++ b/src/gui/rhi/qrhimetal.mm @@ -3596,6 +3596,18 @@ bool QMetalSwapChain::buildOrResize() } #endif + if (m_flags.testFlag(SurfaceHasPreMulAlpha)) { + d->layer.opaque = NO; + } else if (m_flags.testFlag(SurfaceHasNonPreMulAlpha)) { + // The CoreAnimation compositor is said to expect premultiplied alpha, + // so this is then wrong when it comes to the blending operations but + // there's nothing we can do. Fortunately Qt Quick always outputs + // premultiplied alpha so it is not a problem there. + d->layer.opaque = NO; + } else { + d->layer.opaque = YES; + } + m_currentPixelSize = surfacePixelSize(); pixelSize = m_currentPixelSize; |