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Diffstat (limited to 'glx/glxutil.c')
| -rw-r--r-- | glx/glxutil.c | 154 |
1 files changed, 154 insertions, 0 deletions
diff --git a/glx/glxutil.c b/glx/glxutil.c new file mode 100644 index 000000000..aa23a95fd --- /dev/null +++ b/glx/glxutil.c @@ -0,0 +1,154 @@ +/* +** 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. +** +*/ + +#define NEED_REPLIES +#define FONT_PCF +#ifdef HAVE_DIX_CONFIG_H +#include <dix-config.h> +#endif + +#include <string.h> + +#include "glxserver.h" +#include <GL/glxtokens.h> +#include <unpack.h> +#include <pixmapstr.h> +#include <windowstr.h> +#include "glxutil.h" +#include "GL/internal/glcore.h" +#include "GL/glxint.h" + +/************************************************************************/ +/* Context stuff */ + + +/* +** associate a context with a drawable +*/ +void +__glXAssociateContext(__GLXcontext *glxc) +{ + glxc->nextDrawPriv = glxc->drawPriv->drawGlxc; + glxc->drawPriv->drawGlxc = glxc; + + __glXRefDrawable(glxc->drawPriv); + + + glxc->nextReadPriv = glxc->readPriv->readGlxc; + glxc->readPriv->readGlxc = glxc; + + __glXRefDrawable(glxc->readPriv); +} + +/* +** Deassociate a context from a drawable +*/ +void +__glXDeassociateContext(__GLXcontext *glxc) +{ + __GLXcontext *curr, *prev; + + prev = NULL; + if (glxc->drawPriv) { + for ( curr = glxc->drawPriv->drawGlxc; curr != NULL + ; prev = curr, curr = curr->nextDrawPriv ) { + if (curr == glxc) { + /* found context. Deassociate. */ + if (prev == NULL) { + glxc->drawPriv->drawGlxc = curr->nextDrawPriv; + } else { + prev->nextDrawPriv = curr->nextDrawPriv; + } + curr->nextDrawPriv = NULL; + __glXUnrefDrawable(glxc->drawPriv); + break; + } + } + } + + prev = NULL; + if (glxc->readPriv) { + for ( curr = glxc->readPriv->readGlxc + ; curr != NULL + ; prev = curr, curr = curr->nextReadPriv ) { + if (curr == glxc) { + /* found context. Deassociate. */ + if (prev == NULL) { + glxc->readPriv->readGlxc = curr->nextReadPriv; + } else { + prev->nextReadPriv = curr->nextReadPriv; + } + curr->nextReadPriv = NULL; + __glXUnrefDrawable(glxc->readPriv); + break; + } + } + } +} + +/*****************************************************************************/ +/* Drawable private stuff */ + +void +__glXRefDrawable(__GLXdrawable *glxPriv) +{ + glxPriv->refCount++; +} + +void +__glXUnrefDrawable(__GLXdrawable *glxPriv) +{ + glxPriv->refCount--; + if (glxPriv->refCount == 0) { + /* remove the drawable from the drawable list */ + FreeResourceByType(glxPriv->drawId, __glXDrawableRes, FALSE); + glxPriv->destroy(glxPriv); + } +} + +GLboolean +__glXDrawableInit(__GLXdrawable *drawable, + __GLXscreen *screen, DrawablePtr pDraw, int type, + XID drawId, __GLXconfig *config) +{ + drawable->pDraw = pDraw; + drawable->type = type; + drawable->drawId = drawId; + drawable->refCount = 1; + drawable->config = config; + drawable->eventMask = 0; + + return GL_TRUE; +} |