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path: root/src/mesa/glapi/gl_table.py
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2007-02-23Fix GLAPIENTRYP for OS X.Ian Romanick
Fix build problems related to incorrect define of GLAPIENTRYP on OS X. Reported by bushing on IRC.
2005-08-05Fix recent problems with display lists and other parts of the code.Ian Romanick
CALL_by_offset, SET_by_offset, and GET_by_offset all had various problems. The core issue is that parts of the device-independent code in Mesa assumes that all functions have slots in the dispatch table. This is especially true in the display list code. It will merrilly try to set dispatch pointers for glVertexAttrib1fARB even if GL_ARB_vertex_program is not supported. When the GET/SET/CALL macros are invoked, they would read a 0 from the remap table. The problem is that 0 is the dispatch offset for glNewList! One change is that the remap table is now initialized to be full of -1 values. In addtion, all of the *_by_offset marcos misbehave in an obvious way if the specified offset is -1. SET_by_offset will do nothing, GET_by_offset will return NULL, and CALL_by_offset, since it uses GET_by_offset, will segfault. I also had to add GL_EXT_blend_func_separate to the list of default extensions in all_mesa_extensions (src/mesa/drivers/dri/common/utils.c). Even though many drivers do not export this extension, glBlendFunc is internally implemented by calling glBlendFuncSeparate. Without this addition, glBlendFunc stopped working on drivers (such as mga) that do not export GL_EXT_blend_func_separate. There are still a few assertions / crashes in GL_ARB_vertex_program tests, but I don't think that these are related to any of my changes.
2005-07-28Major rip-up of internal function insertion interface. The oldIan Romanick
_glapi_add_entrypoint has been replaced by a new routine called _glapi_add_dispatch. This new routine dynamically assignes dispatch offsets to functions added. This allows IHVs to add support for extension functions that do not have assigned dispatch offsets. It also means that a driver has no idea what offset will be assigned to a function. The vast majority of the changes in this commit account for that. An additional table, driDispatchRemapTable, is added. Functions not in the Linux OpenGL ABI (i.e., anything not in GL 1.2 + ARB_multitexture) has a fixed offset in this new table. The entry in this table specifies the offset in of the function in the real dispatch table. The internal interface was also bumped from version 20050725 to 20050727. This has been tested with various programs in progs/demos on: radeon (Radeon Mobility M6) r128 (Rage 128 Pro) mga (G400)
2005-07-18Wrap every place that accesses a dispatch table with a macro. A new script-Ian Romanick
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
2005-06-21Mammoth update to the Python code generator scripts that live inIan Romanick
src/mesa/glapi. Basically, the scripts that did simple things (like gl_offsets.py) were simple, and the scripts that did more complicated things (like glX_proto_send.py) were getting progressively more and more out of control. So, I re-write the foundation classes on which everything is based. One problem with the existing code is that the division between the GL API database representation and the way the output code is generated was either blury or nonexistant. The new code somewhat follows the Model-View-Controller pattern, minus the Controller. There is a distinct set of classes that model the API data, and there is a distinct set of classes that generate code from that data. One big change is in the class that represents GL functions (was glFunction, is now gl_function). There used to be an instance of this calls for each function and for each alias to that function. For example, there was an instance for PointParameterivSGIS, PointParameterivEXT, PointParameterivARB, and PointParameteriv. In the new code, there is one instance. Each instance has a list of entrypoint names for the function. In the next revision, this will allow a couple useful things. The script will be able to verify that the parameters, return type, and GLX protocol for a function and all it's aliases match. It will also allow aliases to be represented in the XML more compactly. Instead of repeating all the information, an alias can be listed as: <function name="PointParameterivARB" alias="PointParameterivEXT"/> Because the data representation was changed, the order that the alias functions are processed by the scripts also changed. This accounts for at least 2,700 of the ~3,600 lines of diffs in the generated code. Most of the remaining ~900 lines of diffs are the result of bugs *fixed* by the new scripts. The old scripts also generated code with some bugs in it. These bugs were discovered while the new code was being written. These changes were discussed on the mesa3d-dev mailing list back at the end of May: http://marc.theaimsgroup.com/?t=111714569000004&r=1&w=2 Xorg bug: 3197, 3208
2005-05-26Minor correction to EXT_framebuffer_object XML. Fix gl_table.py so that itIan Romanick
generates the correct script name in the generated output.
2005-04-18Refactor a bunch of common code from the "leaf" scripts to a new functions,Ian Romanick
parse_GL_API, in gl_XML.py.
2005-04-18Convert all Python scripts to use XML namespaces.Ian Romanick
2005-01-28Refactor the code to emit multiple-inclusion protection toIan Romanick
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.
2004-05-18New scripts for processing the XML version of APIspec. Mail is beingIan Romanick
sent to mesa3d-dev with a more detailed description.