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into softpipe_0_1_branch
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Using floats (and float->ushort->float conversion) introduces errors.
Only GLushort depth buffers work for now...
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into softpipe_0_1_branch
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We should be able to render to any depth/format of X window now.
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Some git wierdness going on.
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This has some limitations as we currently require a mapped framebuffer,
so it only really works with double-buffered ximage rgba8888 windows.
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Only build tested.
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Instead of separate fog/specular/texcoord/varying code, just treat all of
them as generic attributes. Simplifies the point/line/triangle functions.
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Could be done more efficiently... but works.
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This is to unify the xmesa code across xserver DDX'es. The call is intented for
XGL, but it does not hurt to call for other DDX'es. In fact it was not guarded
against XGL when it was first added in xserver.
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mainly drop 'client' argument from initialize_visual_and_buffer().
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This reverts commit 2a2f8d806f74619f0a7cf97fdc7f7b3ad1cad81b.
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glide is no longer compiled with stand-alone libGL, so this will not link.
There are still the glide config files. some code in demos and the
GLX_MESA_set_3dfx_mode code which could be removed.
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detected w/ valgrind
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It could only be called from XMesaCopySubBuffer but this function is not used
by XFree86.
It seems that XMesaPutImageHelper would handle sub-images but never got
finished. Proper sub-image helpers should be written if need be.
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This uses xmesa.h as the GLcore interface and avoids adding an explicit GLcore
inteface which would not be a proper interface anyway.
It puts the declarations of the three functions specific for XMesa/XFree86 in
xmesa.h, we can push them down to xmesa_xf86.h if hiding behind XFree86Server
ifdef's is not enough.
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Keep external includes to glxheader.h and xmesa includes to xmesaP.h.
Drop the following from xm_image.h:
- dix-config.h (comes from glheader.h)
- xfree86 includes (come from GL/xmesa_xf86.h)
- ifdef __CYGWIN__ (leftover ? xm_api.c has something similar)
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Drop XMesaSetVisualDisplay(), XMesaReset(), no longer used.
Add XMesaCopyContext() and move the GlxSetRenderTables() call for XGL within
XMesaForceCurrent(). This is to make xserver/GL/mesa/X/xf86glx.c unaware of
Mesa internals.
Also, clean some ifdef's to make it clear that USE_XSHM and XFree86Server are
mutually exclusive.
Lastly,
- move gcstruct.h from glxheader.h up to xmesa_xf86.h since it calls *gc->ops
- drop GL/glxtokens.h from xm_api|dd.c, GLX tokens come from glcore.h and are
used irrelevant of XFree86.
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Nicolai writes:
When the pixmap pixel format has no alpha channel, the x11 driver
(software rendering) adds a wrapped alpha channel on request.
During SwapBuffers, this alpha channel is not copied from back to
front, which means that the front buffer doesn't really contain the
contents that the back buffer previously contained.
A subsequent glReadPixels from the front buffer will return an
incorrect result. The following patch attempts to fix this.
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In xmesa_check_and_update_buffer_size() handle xmctx==NULL correctly: still
call _mesa_resize_framebufer(). If we don't we can wind up in a situation
where the framebuffer size is non-zero but an attached renderbuffer size
is still initialized to zero. This inconsistancy can later cause problems.
Check for zero-size renderbuffers in update_color_draw_buffers() and
update_color_read_buffer().
See bug 7205.
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Use _mesa_reference_framebuffer() and _mesa_unreference_framebuffer() functions
to be sure reference counting is done correctly. Additional assertions are
done too. Note _mesa_dereference_framebuffer() renamed to "unreference" as
that's more accurate.
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