15e4d14dfa
These offer a simpler and more efficient means for temporarily
transitioning to CPU-accessible memory for fallback implementations.
v2: Do not attempt fallbacks with GLAMOR_DRM_ONLY pixmaps
glamor cannot transfer pixels for GLAMOR_DRM_ONLY pixmaps using
glReadPixels and glTexSubImage2D, and so there's no way to perform
fallback operations with these pixmaps.
v3: Clear ->pbo field when deleting the PBO. Otherwise, we'd reuse
the old name next time we fall back on the pixmap, which would
potentially conflict with some other pixmap that genned a new
name, or just do a lazy allocation of the name (compat GL context,
like we currently use) or error out (core GL context, like we hope
to use some day). Also, style fixes. Changes by anholt, acked by
keithp.
Signed-off-by: Keith Packard <keithp@keithp.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
53 lines
1.8 KiB
C
53 lines
1.8 KiB
C
/*
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* Copyright © 2014 Keith Packard
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*
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* Permission to use, copy, modify, distribute, and sell this software and its
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* documentation for any purpose is hereby granted without fee, provided that
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* the above copyright notice appear in all copies and that both that copyright
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* notice and this permission notice appear in supporting documentation, and
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* that the name of the copyright holders not be used in advertising or
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* publicity pertaining to distribution of the software without specific,
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* written prior permission. The copyright holders make no representations
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* about the suitability of this software for any purpose. It is provided "as
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* is" without express or implied warranty.
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*
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* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
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* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
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* EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
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* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
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* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
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* OF THIS SOFTWARE.
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*/
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#ifndef _GLAMOR_PREPARE_H_
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#define _GLAMOR_PREPARE_H_
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Bool
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glamor_prepare_access(DrawablePtr drawable, glamor_access_t access);
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Bool
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glamor_prepare_access_box(DrawablePtr drawable, glamor_access_t access,
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int x, int y, int w, int h);
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void
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glamor_finish_access(DrawablePtr drawable);
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Bool
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glamor_prepare_access_picture(PicturePtr picture, glamor_access_t access);
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Bool
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glamor_prepare_access_picture_box(PicturePtr picture, glamor_access_t access,
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int x, int y, int w, int h);
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void
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glamor_finish_access_picture(PicturePtr picture);
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Bool
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glamor_prepare_access_gc(GCPtr gc);
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void
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glamor_finish_access_gc(GCPtr gc);
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#endif /* _GLAMOR_PREPARE_H_ */
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