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533b3530c1
Structurally, this is very similar to the existing Apple-DRI code, except I have chosen to implement this using the __GLXDRIdisplay, etc. vtables (as suggested originally in [1]), rather than a maze of ifdefs. This also means that LIBGL_ALWAYS_SOFTWARE and LIBGL_ALWAYS_INDIRECT work as expected. [1] https://lists.freedesktop.org/archives/mesa-dev/2010-May/000756.html This adds: * the Windows-DRI extension protocol headers and the windowsdriproto.pc file, for use in building the Windows-DRI extension for the X server * a Windows-DRI extension helper client library * a Windows-specific DRI implementation for GLX clients The server is queried for Windows-DRI extension support on the screen before using it (to detect the case where WGL is disabled or can't be activated). The server is queried for fbconfigID to pixelformatindex mapping, which is used to augment glx_config. The server is queried for a native handle for the drawable (which is of a different type for windows, pixmaps and pbuffers), which is used to augment __GLXDRIdrawable. Various GLX extensions are enabled depending on if the equivalent WGL extension is available.
195 lines
5 KiB
C
195 lines
5 KiB
C
/*
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* Mesa 3-D graphics library
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*
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* Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*/
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/**
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* \mainpage Mesa GL API Module
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*
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* \section GLAPIIntroduction Introduction
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*
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* The Mesa GL API module is responsible for dispatching all the
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* gl*() functions. All GL functions are dispatched by jumping through
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* the current dispatch table (basically a struct full of function
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* pointers.)
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*
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* A per-thread current dispatch table and per-thread current context
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* pointer are managed by this module too.
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*
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* This module is intended to be non-Mesa-specific so it can be used
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* with the X/DRI libGL also.
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*/
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#ifndef _GLAPI_H
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#define _GLAPI_H
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#include "util/macros.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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#ifdef _GLAPI_NO_EXPORTS
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# define _GLAPI_EXPORT
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#else /* _GLAPI_NO_EXPORTS */
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# ifdef _WIN32
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# ifdef _GLAPI_DLL_EXPORTS
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# define _GLAPI_EXPORT __declspec(dllexport)
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# else
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# define _GLAPI_EXPORT __declspec(dllimport)
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# endif
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# elif defined(__GNUC__)
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# define _GLAPI_EXPORT __attribute__((visibility("default")))
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# else
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# define _GLAPI_EXPORT
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# endif
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#endif /* _GLAPI_NO_EXPORTS */
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/* Is this needed? It is incomplete anyway. */
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#ifdef USE_MGL_NAMESPACE
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#define _glapi_set_dispatch _mglapi_set_dispatch
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#define _glapi_get_dispatch _mglapi_get_dispatch
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#define _glapi_set_context _mglapi_set_context
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#define _glapi_get_context _mglapi_get_context
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#define _glapi_Dispatch _mglapi_Dispatch
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#define _glapi_Context _mglapi_Context
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#endif
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typedef void (*_glapi_proc)(void);
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typedef void (*_glapi_nop_handler_proc)(const char *name);
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struct _glapi_table;
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#if defined (GLX_USE_TLS)
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_GLAPI_EXPORT extern __thread struct _glapi_table * _glapi_tls_Dispatch
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__attribute__((tls_model("initial-exec")));
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_GLAPI_EXPORT extern __thread void * _glapi_tls_Context
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__attribute__((tls_model("initial-exec")));
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_GLAPI_EXPORT extern const struct _glapi_table *_glapi_Dispatch;
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_GLAPI_EXPORT extern const void *_glapi_Context;
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# define GET_DISPATCH() _glapi_tls_Dispatch
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# define GET_CURRENT_CONTEXT(C) struct gl_context *C = (struct gl_context *) _glapi_tls_Context
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#else
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_GLAPI_EXPORT extern struct _glapi_table *_glapi_Dispatch;
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_GLAPI_EXPORT extern void *_glapi_Context;
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#define GET_DISPATCH() \
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(likely(_glapi_Dispatch) ? _glapi_Dispatch : _glapi_get_dispatch())
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#define GET_CURRENT_CONTEXT(C) struct gl_context *C = (struct gl_context *) \
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(likely(_glapi_Context) ? _glapi_Context : _glapi_get_context())
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#endif /* defined (GLX_USE_TLS) */
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void
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_glapi_destroy_multithread(void);
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_GLAPI_EXPORT void
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_glapi_check_multithread(void);
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_GLAPI_EXPORT void
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_glapi_set_context(void *context);
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_GLAPI_EXPORT void *
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_glapi_get_context(void);
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_GLAPI_EXPORT void
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_glapi_set_dispatch(struct _glapi_table *dispatch);
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_GLAPI_EXPORT struct _glapi_table *
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_glapi_get_dispatch(void);
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_GLAPI_EXPORT unsigned int
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_glapi_get_dispatch_table_size(void);
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_GLAPI_EXPORT int
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_glapi_add_dispatch( const char * const * function_names,
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const char * parameter_signature );
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_GLAPI_EXPORT int
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_glapi_get_proc_offset(const char *funcName);
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_GLAPI_EXPORT _glapi_proc
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_glapi_get_proc_address(const char *funcName);
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_GLAPI_EXPORT const char *
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_glapi_get_proc_name(unsigned int offset);
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#if defined(GLX_USE_APPLEGL) || defined(GLX_USE_WINDOWSGL)
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_GLAPI_EXPORT struct _glapi_table *
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_glapi_create_table_from_handle(void *handle, const char *symbol_prefix);
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#endif
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_GLAPI_EXPORT void
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_glapi_set_nop_handler(_glapi_nop_handler_proc func);
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/** Return pointer to new dispatch table filled with no-op functions */
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_GLAPI_EXPORT struct _glapi_table *
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_glapi_new_nop_table(unsigned num_entries);
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/** Deprecated function */
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_GLAPI_EXPORT unsigned long
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_glthread_GetID(void);
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/*
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* These stubs are kept so that the old DRI drivers still load.
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*/
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_GLAPI_EXPORT void
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_glapi_noop_enable_warnings(unsigned char enable);
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_GLAPI_EXPORT void
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_glapi_set_warning_func(_glapi_proc func);
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#ifdef __cplusplus
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}
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#endif
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#endif /* _GLAPI_H */
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