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generated file, called src/mesa/glapi/dispatch.h, is added. This file
contains three macros for each API function. It contains a GET, a SET, and
a CALL. Each of the macros take a pointer to the context and a pointer to
the dispatch table.
In several threads on mesa3d-dev we discussed replacing _glapi_add_entrypoint
with a new function called _glapi_add_dispatch. For this discussion, the
important difference between the two is that the caller of _glapi_add_dispatch
does *not* know what the dispatch offset will be at compile time. Because of
this callers need to track the dispatch offset returned by
_glapi_add_dispatch.
http://marc.theaimsgroup.com/?t=111947074700001&r=1&w=2
The downside is that driver code then has to access the dispatch table two
different ways. It accesses it using structure tags (e.g., exec->Begin) for
functions with fixed offsets and via a remap table (e.g., exec[
remap->NewExtensionFunction ]) for functions without fixed offsets. Yuck!
Using the macros allows both types of functions to be accessed
identically. If a driver needs to set a pointer for Begin, it does
'SET_Begin(ctx, exec, my_begin_function)'. If it needs to set a pointer
for NewExtensionFunction, it does 'SET_NewExtensionFunction(ctx, exec,
my_NewExtensionFunction_function)'. Furthermore, if at some point in
the future a static offset is assigned for NewExtensionFunction, only
the macros need to change (instead of every single place that accesses a
table for that function).
This code differs slightly from the originally posted patches in that the
CALL, GET, and SET marcos no longer take a context pointer as a parameter.
Brian Paul had suggested that the remap table could be stored as a global
since it would be set at CreateScreen time and would be constant for all
contexts. This change reflects that feedback.
http://marc.theaimsgroup.com/?t=112087194700001&r=1&w=2
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use 64-bit pointers and 32-bit longs. So, operations like casting pointers
to unsigned long and back to pointer won't work. glheader.h now
includes files to define uintptr_t, which should instead be used for
this sort of operation. It is an integer type that is the same size
as a pointer.
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them easily.
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representations by switching to packed structures for registers and
instructions.
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through the GL API directly, but should instead use the GL_CALL macro.
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- remove redundant check of parsed program target
- remove redundant check of relative addressing range
- use faster grammar interface
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present in GL_EXTENSIONS string.
Parse OPTION ARB_draw_buffers.
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1015696)
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Correction on last commit (My FTP-server on linux is playing games with
<CR>'s)
Modified Files:
Mesa/src/mesa/drivers/common/descrip.mms
Mesa/src/mesa/main/descrip.mms
Mesa/src/mesa/shader/arbprogparse.c
Mesa/src/mesa/shader/descrip.mms
Mesa/src/mesa/swrast/descrip.mms Mesa/src/mesa/tnl/descrip.mms
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Updated OpenVMS compile support due to shader directory.
Removed <CR>'s in arbprogparse.c
Modified Files:
Mesa/src/mesa/descrip.mms
Mesa/src/mesa/drivers/common/descrip.mms
Mesa/src/mesa/main/descrip.mms
Mesa/src/mesa/shader/arbprogparse.c
Mesa/src/mesa/shader/descrip.mms
Mesa/src/mesa/swrast/descrip.mms Mesa/src/mesa/tnl/descrip.mms
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Be sure to assign program.Base.String pointer.
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Needs testing - it havent been even compiled yet.
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