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authorMario Kleiner <[email protected]>2017-12-15 23:04:59 +0100
committerMarek Olšák <[email protected]>2018-01-03 22:57:56 +0100
commit82a2ede9aa5c771b37881fe069b7e7a2e68146be (patch)
treef4a828c3df85f51568c39b8e58258d0cf4162e1b /docs/download.html
parentd0b320c941e8c413c4e8a0106112cddef21c6765 (diff)
egl/x11: Handle depth 30 drawables for EGL_KHR_image_pixmap.
Enables eglCreateImageKHR() with target set to EGL_NATIVE_PIXMAP_KHR to handle color depth 30 X11 drawables. Note that in theory the drawable depth 32 case in the current implementation is ambiguous: A depth 32 drawable could be of format ARGB8888 or ARGB2101010, therefore an assignment of __DRI_IMAGE_FORMAT_ARGB8888 for a pixmap of ARGB2101010 format would be wrong. In practice however, the X-Server (as of v1.19) does not provide any depth 32 visuals for ARGB2101010 EGL/GLX configs. Those are associated with depth 30 visuals without an alpha channel instead. Therefore the switch-case depth 32 branch is only executed for ARGB8888 pixmaps and we get away with this. Tested with KDE Plasma 5 under X11, DRI2 and DRI3/Present, selecting EGL + OpenGL compositing and different fbconfigs with/without 2 bit alpha channel. glxinfo confirms use of depth 30 visuals for ARGB2101010 only. Suggested-by: Eric Engestrom <[email protected]> Signed-off-by: Mario Kleiner <[email protected]> Reviewed-by: Tapani Pälli <[email protected]> Reviewed-by: Marek Olšák <[email protected]> Signed-off-by: Marek Olšák <[email protected]>
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