[Mesa-dev] (no subject)
krh at bitplanet.net
Fri Jun 4 06:46:22 PDT 2010
Here's an update on the EGL/DRM integration extensions and patches.
I've updated the patches with the feedback from the discussions on the
list to the extent that I think is feasible. I think we're pretty
close to consensus on how to do this, but let me know what you think.
There's also a new extension in the series, the EGL_INTEL_no_surface
extension, which lets us make a context current without a surface.
I updated the eglkms.c test case, and it now compiles and runs against
this patch series:
[PATCH 1/6] egl: Add MESA_typed_display infrastructure
This is the updated version of the alternative eglGetDisplay
extension. I've incorporated the feedback from Chia-I regarding
naming of the entry point and tokens, and Jakobs suggestion that we
add tokens for the existing platforms (Win32 and X11).
It's still a new entrypoint, not separate .so's as Chia-I suggested.
I don't think it's a terrible idea to have separate .so's with
different names, but I still like this better, and with separate
.so's we'll have to compile libEGL several times to output the
different libraries, which is awkward and a pain for distributions.
I dropped the XCB display for now.
[PATCH 2/6] egl_dri2: Support EGL_DISPLAY_TYPE_DRM_MESA
This one just adds support to egl_dri2, should be pretty harmless.
[PATCH 3/6] egl: EGL_INTEL_no_surface extension
The new extension mentioned above. It adds a new config attribute
to inidicate the APIs that support making a context current with
that config and no surfaces. Previous discussion on this have
stalled on the problem that not all client APIs have a meaningful
way to make a context current without surfaces. By specifying the
supported APIs in the config we solve this problem. See the spec in
the patch for details.
[PATCH 4/6] egl: MESA_image_drm extension
This is the extension to create drm images from nothing using
eglCreateDRMImageMESA, share them using eglShareDRMImageMesa, and
import them using the EGL_DRM_BUFFER_MESA target with
eglCreateImageKHR. Sharing an image is a separate entrypoint
because a drm buffer doesn't necesarily have a global name and
creating one is an extra step that we don't always want to incur.
[PATCH 5/6] egl_dri2: Add support for MESA_image_drm
Nothing to see here, just the implementation. Some of the
attrib_list checking could be lifted to egl/main.
[PATCH 6/6] intel: Add support for MESA_drm_image
The intel dri driver side of things.
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