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xserver/GL/glx/glxscreens.c

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/* $XFree86: xc/programs/Xserver/GL/glx/glxscreens.c,v 1.14 2004/02/09 23:46:31 alanh Exp $ */
/*
** License Applicability. Except to the extent portions of this file are
** made subject to an alternative license as permitted in the SGI Free
** Software License B, Version 1.1 (the "License"), the contents of this
** file are subject only to the provisions of the License. You may not use
** this file except in compliance with the License. You may obtain a copy
** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
**
** http://oss.sgi.com/projects/FreeB
**
** Note that, as provided in the License, the Software is distributed on an
** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
**
** Original Code. The Original Code is: OpenGL Sample Implementation,
** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
** Copyright in any portions created by third parties is as indicated
** elsewhere herein. All Rights Reserved.
**
** Additional Notice Provisions: The application programming interfaces
** established by SGI in conjunction with the Original Code are The
** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
** Window System(R) (Version 1.3), released October 19, 1998. This software
** was created using the OpenGL(R) version 1.2.1 Sample Implementation
** published by SGI, but has not been independently verified as being
** compliant with the OpenGL(R) version 1.2.1 Specification.
**
*/
#ifdef HAVE_DIX_CONFIG_H
#include <dix-config.h>
#endif
#ifdef IN_MODULE
#include <xf86_ansic.h>
#else
#include <string.h>
#include <signal.h>
#endif
#include <windowstr.h>
#include "glxserver.h"
#include "glxvisuals.h"
#include "glxutil.h"
#include "glxext.h"
#include "glxloader.h"
const char GLServerVersion[] = "1.2";
static const char GLServerExtensions[] =
"GL_ARB_depth_texture "
"GL_ARB_imaging "
"GL_ARB_multitexture "
"GL_ARB_point_parameters "
"GL_ARB_point_sprite "
"GL_ARB_shadow "
"GL_ARB_shadow_ambient "
"GL_ARB_texture_border_clamp "
"GL_ARB_texture_cube_map "
"GL_ARB_texture_env_add "
"GL_ARB_texture_env_combine "
"GL_ARB_texture_env_crossbar "
"GL_ARB_texture_env_dot3 "
"GL_ARB_texture_mirrored_repeat "
"GL_ARB_transpose_matrix "
"GL_ARB_window_pos "
"GL_EXT_abgr "
"GL_EXT_bgra "
"GL_EXT_blend_color "
"GL_EXT_blend_func_separate "
"GL_EXT_blend_logic_op "
"GL_EXT_blend_minmax "
"GL_EXT_blend_subtract "
"GL_EXT_clip_volume_hint "
"GL_EXT_copy_texture "
"GL_EXT_draw_range_elements "
"GL_EXT_fog_coord "
"GL_EXT_multi_draw_arrays "
"GL_EXT_packed_pixels "
"GL_EXT_polygon_offset "
"GL_EXT_rescale_normal "
"GL_EXT_secondary_color "
"GL_EXT_separate_specular_color "
"GL_EXT_shadow_funcs "
"GL_EXT_stencil_two_side "
"GL_EXT_stencil_wrap "
"GL_EXT_subtexture "
"GL_EXT_texture "
"GL_EXT_texture3D "
"GL_EXT_texture_edge_clamp "
"GL_EXT_texture_env_add "
"GL_EXT_texture_env_combine "
"GL_EXT_texture_env_dot3 "
"GL_EXT_texture_lod "
"GL_EXT_texture_lod_bias "
"GL_EXT_texture_object "
"GL_EXT_texture_rectangle "
"GL_EXT_vertex_array "
"GL_APPLE_packed_pixels "
"GL_ATI_texture_mirror_once "
"GL_ATI_texture_env_combine3 "
"GL_HP_occlusion_test "
"GL_IBM_texture_mirrored_repeat "
"GL_MESA_pack_invert "
"GL_MESA_ycbcr_texture "
"GL_NV_blend_square "
"GL_NV_point_sprite "
"GL_NV_texgen_reflection "
"GL_NV_texture_rectangle "
"GL_SGIS_generate_mipmap "
"GL_SGIS_texture_border_clamp "
"GL_SGIS_texture_edge_clamp "
"GL_SGIS_texture_lod "
"GL_SGIX_depth_texture "
"GL_SGIX_shadow "
"GL_SGIX_shadow_ambient "
;
/*
** We have made the simplifying assuption that the same extensions are
** supported across all screens in a multi-screen system.
*/
static char GLXServerVendorName[] = "SGI";
static char GLXServerVersion[] = "1.2";
static char GLXServerExtensions[] =
"GLX_ARB_multisample "
"GLX_EXT_visual_info "
"GLX_EXT_visual_rating "
"GLX_EXT_import_context "
"GLX_OML_swap_method "
"GLX_SGI_make_current_read "
#ifndef __DARWIN__
"GLX_SGIS_multisample "
"GLX_SGIX_hyperpipe "
"GLX_SGIX_swap_barrier "
#endif
"GLX_SGIX_fbconfig "
"GLX_EXT_texture_from_drawable "
;
__GLXscreenInfo *__glXActiveScreens;
GLint __glXNumActiveScreens;
__GLXSwapBarrierExtensionFuncs *__glXSwapBarrierFuncs = NULL;
static int __glXNumSwapBarrierFuncs = 0;
__GLXHyperpipeExtensionFuncs *__glXHyperpipeFuncs = NULL;
static int __glXNumHyperpipeFuncs = 0;
__GLXscreenInfo *__glXgetActiveScreen(int num) {
return &__glXActiveScreens[num];
}
/*
* If your DDX driver wants to register support for swap barriers or hyperpipe
* topology, it should call __glXHyperpipeInit() or __glXSwapBarrierInit()
* with a dispatch table of functions to handle the requests. In the XFree86
* DDX, for example, you would call these near the bottom of the driver's
* ScreenInit method, after DRI has been initialized.
*
* This should be replaced with a better method when we teach the server how
* to load DRI drivers.
*/
void __glXHyperpipeInit(int screen, __GLXHyperpipeExtensionFuncs *funcs)
{
if (__glXNumHyperpipeFuncs < screen + 1) {
__glXHyperpipeFuncs = __glXRealloc(__glXHyperpipeFuncs,
(screen+1) * sizeof(__GLXHyperpipeExtensionFuncs));
__glXNumHyperpipeFuncs = screen + 1;
}
__glXHyperpipeFuncs[screen].queryHyperpipeNetworkFunc =
*funcs->queryHyperpipeNetworkFunc;
__glXHyperpipeFuncs[screen].queryHyperpipeConfigFunc =
*funcs->queryHyperpipeConfigFunc;
__glXHyperpipeFuncs[screen].destroyHyperpipeConfigFunc =
*funcs->destroyHyperpipeConfigFunc;
__glXHyperpipeFuncs[screen].hyperpipeConfigFunc =
*funcs->hyperpipeConfigFunc;
}
void __glXSwapBarrierInit(int screen, __GLXSwapBarrierExtensionFuncs *funcs)
{
if (__glXNumSwapBarrierFuncs < screen + 1) {
__glXSwapBarrierFuncs = __glXRealloc(__glXSwapBarrierFuncs,
(screen+1) * sizeof(__GLXSwapBarrierExtensionFuncs));
__glXNumSwapBarrierFuncs = screen + 1;
}
__glXSwapBarrierFuncs[screen].bindSwapBarrierFunc =
funcs->bindSwapBarrierFunc;
__glXSwapBarrierFuncs[screen].queryMaxSwapBarriersFunc =
funcs->queryMaxSwapBarriersFunc;
}
void __glXScreenInit(GLint numscreens)
{
GLint i;
/*
** This alloc has to work or else the server might as well core dump.
*/
__glXActiveScreens =
(__GLXscreenInfo *) __glXMalloc(sizeof(__GLXscreenInfo) * numscreens);
for (i = 0; i < numscreens; i++) {
__glXVisualsInitScreen(&__glXActiveScreens[i], i);
__glXActiveScreens[i].GLextensions = __glXStrdup(GLServerExtensions);
__glXActiveScreens[i].GLXvendor = __glXStrdup(GLXServerVendorName);
__glXActiveScreens[i].GLXversion = __glXStrdup(GLXServerVersion);
__glXActiveScreens[i].GLXextensions = __glXStrdup(GLXServerExtensions);
__glXLoaderInitScreen(i);
}
__glXNumActiveScreens = numscreens;
}
void __glXScreenReset(void)
{
int i;
for (i = 0; i < __glXNumActiveScreens; i++) {
__glXFree(__glXActiveScreens[i].GLXvendor);
__glXFree(__glXActiveScreens[i].GLXversion);
__glXFree(__glXActiveScreens[i].GLXextensions);
__glXFree(__glXActiveScreens[i].GLextensions);
}
xfree(__glXActiveScreens);
xfree(__glXHyperpipeFuncs);
xfree(__glXSwapBarrierFuncs);
__glXNumHyperpipeFuncs = 0;
__glXNumSwapBarrierFuncs = 0;
__glXHyperpipeFuncs = NULL;
__glXSwapBarrierFuncs = NULL;
__glXActiveScreens = NULL;
__glXNumActiveScreens = 0;
}
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