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endElement handler for <function>. This catches the errors as early as
possible and makes debugging other code easier.
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now contains 3 static tables. The first table is a single, large string of
all the enum names. The second table is an array, sorted by enum name, of
indexes to the string table and the matching enum value. The extra string
table is used to eliminate relocs (and save space) in the compiled file.
The third table is an array, sorted by enum value, of indexes into the
second table.
The [name, enum] table contains all of the enums, but the table sorted by
enum-value does not. This table contains one entry per enum value. For
enum values that have multiple names (e.g., 0x84C0 has GL_TEXTURE0_ARB and
GL_TEXTURE0), only an index to the "best" name will appear in the table.
gl_enums.py gives precedence to "core" GL versions of names, followed by ARB
versions, followed by EXT versions, followed, finally, by vendor versions
(i.e., anything that doesn't fall into one of the previous categories). By
filtering the unneeded elements from this table, not only can we guarantee
determinism in the generated tables, but we save 364 elements in the table.
The optimizations outlined above reduced the size of the stripped enums.o
(on x86) from ~80KB to ~53KB.
The internal organization of gl_enums.py was also heavily modified.
Previously enums were stored in an unsorted list as [value, name] tuples
(basically). This list was then sorted, using a user-specified compare
function (i.e., VERY slow in most Python implementations) to generate a
table sorted by enum value. It was then sorted again, using another
user-specified compare function, to generate a table sorted by name.
Enums are now stored in a dictionary, called enum_table, with the enum value
as the key. Each dictionary element is a list of [name, priority] pairs.
The priority is determined as described above. The table sorted by enum
value is generated by sorting the keys of enum_table (i.e., very fast). The
tables sorted by name are generated by creating a list, called name_table,
of [name, enum value] pairs. This table can then be sorted by doing
name_table.sort() (i.e., very fast).
The result is a fair amount more Python code, but execution time was reduced
from ~14 seconds to ~2 seconds.
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<include name="file"/> element as a sub-element of <OpenGLAPI>.
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glFunctionIterator and is used by GlxProto. The difference between the two
iterator classes is that glXFunctionIterator skips functions that the GLX
protocol code does not care about.
Replace all the remaining occurances of glParameter::p_count_parameters and
glFunction::count_parameters with the count_parameter_list.
Add GlxProto::size_call to generate the C code to calculate 'compsize'.
These trivially modify the generated code.
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FilterGLAPISpecBase (in gl_XML.py). When these functions are used to emit
common #define lines, the will automatically be undefined in
FilterGLAPISpecBase::printFooter if header_tag is set (i.e., the file is a
header file).
These changes do not modify the generated code.
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glXEnumFunction constructor. The allows sub-classes of GlxProto to
over-ride the concrete class used for glXEnumFunction.
In addition to tracking p_count_parameters in glParameter, break the comma
separated list of parameter names into a Python list called
count_parameter_list. It is now possible to query if a name is the name of
one of the count parameters just by comparing
param.count_parameter_list.count(n) to zero. Eventually the remaining uses
of p_count_parameters will be replaced with uses of count_parameter_list.
Make sure that 'void *' parameters are handled correctly in
glParameter::size_string.
Add PrintGlxReqSize_h and PrintGlxReqSize_c. These classes emit prototypes
and functions used on the server-side to determine the expected size of an
incoming GL command.
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FilterGLAPISpecBase. Since the size_h mode of glX_proto_size.py will be
used to generate multiple header files, add an option to specify the define
that is used for multiple-inclusion protection.
The changes to the header files in this commit are just a side-effect of the
changes to the Python scripts.
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higher-level API object. Use this type of object to implement the
printFunctions method. Modify other functions that iterate over the list of
functions to use this type of object.
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used for "size" sub-elements. In the future the "count" attribute may
be removed completely from "size" sub-elements, so gl_API.xml was also
updated.
Support was added for a (currently unused) "mode" attribute for "size"
elements. Basically, functions are marked as either "get" or "set". This
will be used in generating size functions for the server-side (where the
"get" functions have to know how much data to return). It could also be
used to help generate code for src/mesa/main/get.c.
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there and glXEnum::startElement to glEnum::process_attributes.
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glX_proto_send.py script. This eliminates ~600 lines of non-generated
code. With proper compiler optimization settings, it also decreases the
size of libGL.so by about 3KB.
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function parameters are iterated. There are no changes in the generated
code.
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meaning of "variable length array" to include variables that are "counted"
instead of just ones that use an enum to map to a count. Added glParameter
to the glItemFactory.
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subclass of glItem.
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sent to mesa3d-dev with a more detailed description.
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