| /************************************************************************** |
| * |
| * Copyright 2007 Tungsten Graphics, Inc., Bismarck, ND., USA |
| * All Rights Reserved. |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a |
| * copy of this software and associated documentation files (the |
| * "Software"), to deal in the Software without restriction, including |
| * without limitation the rights to use, copy, modify, merge, publish, |
| * distribute, sub license, and/or sell copies of the Software, and to |
| * permit persons to whom the Software is furnished to do so, subject to |
| * the following conditions: |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL |
| * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, |
| * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR |
| * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE |
| * USE OR OTHER DEALINGS IN THE SOFTWARE. |
| * |
| * The above copyright notice and this permission notice (including the |
| * next paragraph) shall be included in all copies or substantial portions |
| * of the Software. |
| * |
| * |
| **************************************************************************/ |
| |
| /* |
| * Authors: |
| * Keith Whitwell |
| */ |
| |
| #include "xlib.h" |
| #include "xm_winsys.h" |
| |
| #include <stdlib.h> |
| #include <assert.h> |
| |
| /* Todo, replace all this with callback-structs provided by the |
| * individual implementations. |
| */ |
| |
| enum mode { |
| MODE_CELL, |
| MODE_LLVMPIPE, |
| MODE_SOFTPIPE |
| }; |
| |
| /* advertise OpenGL support */ |
| PUBLIC const int st_api_OpenGL = 1; |
| |
| static enum mode get_mode() |
| { |
| #ifdef GALLIUM_CELL |
| if (!getenv("GALLIUM_NOCELL")) |
| return MODE_CELL; |
| #endif |
| |
| #if defined(GALLIUM_LLVMPIPE) |
| return MODE_LLVMPIPE; |
| #else |
| return MODE_SOFTPIPE; |
| #endif |
| } |
| |
| static void _init( void ) __attribute__((constructor)); |
| |
| static void _init( void ) |
| { |
| enum mode xlib_mode = get_mode(); |
| |
| switch (xlib_mode) { |
| case MODE_CELL: |
| #if defined(GALLIUM_CELL) |
| xmesa_set_driver( &xlib_cell_driver ); |
| #endif |
| break; |
| case MODE_LLVMPIPE: |
| #if defined(GALLIUM_LLVMPIPE) |
| xmesa_set_driver( &xlib_llvmpipe_driver ); |
| #endif |
| break; |
| case MODE_SOFTPIPE: |
| #if defined(GALLIUM_SOFTPIPE) |
| xmesa_set_driver( &xlib_softpipe_driver ); |
| #endif |
| break; |
| default: |
| assert(0); |
| break; |
| } |
| } |
| |
| |
| /*********************************************************************** |
| * |
| * Butt-ugly hack to convince the linker not to throw away public GL |
| * symbols (they are all referenced from getprocaddress, I guess). |
| */ |
| extern void (*linker_foo(const unsigned char *procName))(); |
| extern void (*glXGetProcAddress(const unsigned char *procName))(); |
| |
| extern void (*linker_foo(const unsigned char *procName))() |
| { |
| return glXGetProcAddress(procName); |
| } |
| |
| |
| /** |
| * When GLX_INDIRECT_RENDERING is defined, some symbols are missing in |
| * libglapi.a. We need to define them here. |
| */ |
| #ifdef GLX_INDIRECT_RENDERING |
| |
| #define GL_GLEXT_PROTOTYPES |
| #include "GL/gl.h" |
| #include "glapi/glapi.h" |
| #include "glapi/dispatch.h" |
| |
| #if defined(USE_MGL_NAMESPACE) |
| #define NAME(func) mgl##func |
| #else |
| #define NAME(func) gl##func |
| #endif |
| |
| #define DISPATCH(FUNC, ARGS, MESSAGE) \ |
| CALL_ ## FUNC(GET_DISPATCH(), ARGS); |
| |
| #define RETURN_DISPATCH(FUNC, ARGS, MESSAGE) \ |
| return CALL_ ## FUNC(GET_DISPATCH(), ARGS); |
| |
| /* skip normal ones */ |
| #define _GLAPI_SKIP_NORMAL_ENTRY_POINTS |
| #include "glapi/glapitemp.h" |
| |
| #endif /* GLX_INDIRECT_RENDERING */ |