On 09/20/2010 08:14 AM, Ian Romanick wrote:
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Eric Anholt wrote:
On our way to OpenGL 3.0, it would be nice to clean out some of the
optional deprecated features that Mesa supports. The ARB_imaging subset
is the highest on my list -- it significantly clutters up the pixel
path, and has always been optional even though the specification text
got rolled into OpenGL 1.2. ATI's proprietary driver never supported
the imaging subset, and what I've read of NVIDIA's implementation
online, its presence is a user trap. Keeping an implementation of it is
not helping our users from a performance or portability perspective.
I've pushed a branch to my repo removing most of SGI_color_matrix,
SGI_color_table, EXT_histogram, and EXT_convolution. Here's the
diffstat:
[snip]
That's 2.7% of mesa/main/, and driver size dropped correspondingly.
Note that we don't get to completely drop histogram.c and convolve.c, as
we're supposed to have the entrypoints and just emit INVALID_OPERATION
for the missing extensions even if the ARB_imaging subset isn't present.
If we don't have any strong justification for keeping this code, I'd
like to merge this to master.
I've been tempted to remove that stuff for a long time.
I will probably push a similar branch this week that removes other
extensions discussed at XDS. See "kill it with fire" at the bottom of
http://www.x.org/wiki/Events/XDS2010/Program. It looks like the biggest
savings will come from removing GL_EXT_paletted_texture and
GL_EXT_shared_texture_palette.
Those all look good too. IIRC, the GL_APPLE_client_storage extensions
was implemented for a client of TG's that was doing something special
with the i915 driver. But I'm sure they're using their own internal
branch of the code (if at all).
-Brian
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