diff options
Diffstat (limited to 'nx-X11/extras/Mesa/src/glx/x11/glxext.c')
| -rw-r--r-- | nx-X11/extras/Mesa/src/glx/x11/glxext.c | 1864 |
1 files changed, 0 insertions, 1864 deletions
diff --git a/nx-X11/extras/Mesa/src/glx/x11/glxext.c b/nx-X11/extras/Mesa/src/glx/x11/glxext.c deleted file mode 100644 index eb6e870e9..000000000 --- a/nx-X11/extras/Mesa/src/glx/x11/glxext.c +++ /dev/null @@ -1,1864 +0,0 @@ -/* $XFree86: xc/lib/GL/glx/glxext.c,v 1.22 2003/12/08 17:35:28 dawes 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. -** -*/ - -/** - * \file glxext.c - * GLX protocol interface boot-strap code. - * - * Direct rendering support added by Precision Insight, Inc. - * - * \author Kevin E. Martin <kevin@precisioninsight.com> - */ - -#include "glxclient.h" -#include <stdio.h> -#include <X11/extensions/Xext.h> -#include <X11/extensions/extutil.h> -#include <assert.h> -#include "indirect_init.h" -#include "glapi.h" -#include "glxextensions.h" -#include "glcontextmodes.h" -#include "glheader.h" - -#ifdef GLX_DIRECT_RENDERING -#include <inttypes.h> -#include <sys/mman.h> -#include "xf86dri.h" -#include "sarea.h" -#include "dri_glx.h" -#endif - -#ifdef USE_XCB -#include <X11/xcl.h> -#include <X11/XCB/xcb.h> -#include <X11/XCB/glx.h> -#endif - -#include <assert.h> - -#ifdef DEBUG -void __glXDumpDrawBuffer(__GLXcontext *ctx); -#endif - -#ifdef USE_SPARC_ASM -/* - * This is where our dispatch table's bounds are. - * And the static mesa_init is taken directly from - * Mesa's 'sparc.c' initializer. - * - * We need something like this here, because this version - * of openGL/glx never initializes a Mesa context, and so - * the address of the dispatch table pointer never gets stuffed - * into the dispatch jump table otherwise. - * - * It matters only on SPARC, and only if you are using assembler - * code instead of C-code indirect dispatch. - * - * -- FEM, 04.xii.03 - */ -extern unsigned int _mesa_sparc_glapi_begin; -extern unsigned int _mesa_sparc_glapi_end; -extern void __glapi_sparc_icache_flush(unsigned int *); -static void _glx_mesa_init_sparc_glapi_relocs(void); -static int _mesa_sparc_needs_init = 1; -#define INIT_MESA_SPARC { \ - if(_mesa_sparc_needs_init) { \ - _glx_mesa_init_sparc_glapi_relocs(); \ - _mesa_sparc_needs_init = 0; \ - } \ -} -#else -#define INIT_MESA_SPARC -#endif - -#ifdef GLX_DIRECT_RENDERING -static __DRIscreen *__glXFindDRIScreen(__DRInativeDisplay *dpy, int scrn); -#endif /* GLX_DIRECT_RENDERING */ - -static Bool MakeContextCurrent(Display *dpy, GLXDrawable draw, - GLXDrawable read, GLXContext gc); - -/* -** We setup some dummy structures here so that the API can be used -** even if no context is current. -*/ - -static GLubyte dummyBuffer[__GLX_BUFFER_LIMIT_SIZE]; - -/* -** Dummy context used by small commands when there is no current context. -** All the -** gl and glx entry points are designed to operate as nop's when using -** the dummy context structure. -*/ -static __GLXcontext dummyContext = { - &dummyBuffer[0], - &dummyBuffer[0], - &dummyBuffer[0], - &dummyBuffer[__GLX_BUFFER_LIMIT_SIZE], - sizeof(dummyBuffer), -}; - - -/* -** All indirect rendering contexts will share the same indirect dispatch table. -*/ -static __GLapi *IndirectAPI = NULL; - - -/* - * Current context management and locking - */ - -#if defined( USE_XTHREADS ) - -/* thread safe */ -static GLboolean TSDinitialized = GL_FALSE; -static xthread_key_t ContextTSD; - -__GLXcontext *__glXGetCurrentContext(void) -{ - if (!TSDinitialized) { - xthread_key_create(&ContextTSD, NULL); - TSDinitialized = GL_TRUE; - return &dummyContext; - } - else { - void *p; - xthread_get_specific(ContextTSD, &p); - if (!p) - return &dummyContext; - else - return (__GLXcontext *) p; - } -} - -void __glXSetCurrentContext(__GLXcontext *c) -{ - if (!TSDinitialized) { - xthread_key_create(&ContextTSD, NULL); - TSDinitialized = GL_TRUE; - } - xthread_set_specific(ContextTSD, c); -} - - -/* Used by the __glXLock() and __glXUnlock() macros */ -xmutex_rec __glXmutex; - -#elif defined( PTHREADS ) - -pthread_mutex_t __glXmutex = PTHREAD_MUTEX_INITIALIZER; - -# if defined( GLX_USE_TLS ) - -/** - * Per-thread GLX context pointer. - * - * \c __glXSetCurrentContext is written is such a way that this pointer can - * \b never be \c NULL. This is important! Because of this - * \c __glXGetCurrentContext can be implemented as trivial macro. - */ -__thread void * __glX_tls_Context __attribute__((tls_model("initial-exec"))) - = &dummyContext; - -void __glXSetCurrentContext( __GLXcontext * c ) -{ - __glX_tls_Context = (c != NULL) ? c : &dummyContext; -} - -# else - -static pthread_once_t once_control = PTHREAD_ONCE_INIT; - -/** - * Per-thread data key. - * - * Once \c init_thread_data has been called, the per-thread data key will - * take a value of \c NULL. As each new thread is created the default - * value, in that thread, will be \c NULL. - */ -static pthread_key_t ContextTSD; - -/** - * Initialize the per-thread data key. - * - * This function is called \b exactly once per-process (not per-thread!) to - * initialize the per-thread data key. This is ideally done using the - * \c pthread_once mechanism. - */ -static void init_thread_data( void ) -{ - if ( pthread_key_create( & ContextTSD, NULL ) != 0 ) { - perror( "pthread_key_create" ); - exit( -1 ); - } -} - -void __glXSetCurrentContext( __GLXcontext * c ) -{ - pthread_once( & once_control, init_thread_data ); - pthread_setspecific( ContextTSD, c ); -} - -__GLXcontext * __glXGetCurrentContext( void ) -{ - void * v; - - pthread_once( & once_control, init_thread_data ); - - v = pthread_getspecific( ContextTSD ); - return (v == NULL) ? & dummyContext : (__GLXcontext *) v; -} - -# endif /* defined( GLX_USE_TLS ) */ - -#elif defined( THREADS ) - -#error Unknown threading method specified. - -#else - -/* not thread safe */ -__GLXcontext *__glXcurrentContext = &dummyContext; - -#endif - - -/* -** You can set this cell to 1 to force the gl drawing stuff to be -** one command per packet -*/ -int __glXDebug = 0; - -/* -** forward prototype declarations -*/ -int __glXCloseDisplay(Display *dpy, XExtCodes *codes); - - -/************************************************************************/ - -/* Extension required boiler plate */ - -static char *__glXExtensionName = GLX_EXTENSION_NAME; -XExtensionInfo *__glXExtensionInfo = NULL; - -static /* const */ char *error_list[] = { - "GLXBadContext", - "GLXBadContextState", - "GLXBadDrawable", - "GLXBadPixmap", - "GLXBadContextTag", - "GLXBadCurrentWindow", - "GLXBadRenderRequest", - "GLXBadLargeRequest", - "GLXUnsupportedPrivateRequest", -}; - -int __glXCloseDisplay(Display *dpy, XExtCodes *codes) -{ - GLXContext gc; - - gc = __glXGetCurrentContext(); - if (dpy == gc->currentDpy) { - __glXSetCurrentContext(&dummyContext); -#ifdef GLX_DIRECT_RENDERING - _glapi_set_dispatch(NULL); /* no-op functions */ -#endif - __glXFreeContext(gc); - } - - return XextRemoveDisplay(__glXExtensionInfo, dpy); -} - - -static XEXT_GENERATE_ERROR_STRING(__glXErrorString, __glXExtensionName, - __GLX_NUMBER_ERRORS, error_list) - -static /* const */ XExtensionHooks __glXExtensionHooks = { - NULL, /* create_gc */ - NULL, /* copy_gc */ - NULL, /* flush_gc */ - NULL, /* free_gc */ - NULL, /* create_font */ - NULL, /* free_font */ - __glXCloseDisplay, /* close_display */ - NULL, /* wire_to_event */ - NULL, /* event_to_wire */ - NULL, /* error */ - __glXErrorString, /* error_string */ -}; - -static -XEXT_GENERATE_FIND_DISPLAY(__glXFindDisplay, __glXExtensionInfo, - __glXExtensionName, &__glXExtensionHooks, - __GLX_NUMBER_EVENTS, NULL) - -/************************************************************************/ - -/* -** Free the per screen configs data as well as the array of -** __glXScreenConfigs. -*/ -static void FreeScreenConfigs(__GLXdisplayPrivate *priv) -{ - __GLXscreenConfigs *psc; - GLint i, screens; - - /* Free screen configuration information */ - psc = priv->screenConfigs; - screens = ScreenCount(priv->dpy); - for (i = 0; i < screens; i++, psc++) { - if (psc->configs) { - _gl_context_modes_destroy( psc->configs ); - if(psc->effectiveGLXexts) - Xfree(psc->effectiveGLXexts); - - psc->configs = NULL; /* NOTE: just for paranoia */ - } - -#ifdef GLX_DIRECT_RENDERING - /* Free the direct rendering per screen data */ - if (psc->driScreen.private) - (*psc->driScreen.destroyScreen)(priv->dpy, i, - psc->driScreen.private); - psc->driScreen.private = NULL; -#endif - } - XFree((char*) priv->screenConfigs); -} - -/* -** Release the private memory referred to in a display private -** structure. The caller will free the extension structure. -*/ -static int __glXFreeDisplayPrivate(XExtData *extension) -{ - __GLXdisplayPrivate *priv; - - priv = (__GLXdisplayPrivate*) extension->private_data; - FreeScreenConfigs(priv); - if(priv->serverGLXvendor) { - Xfree((char*)priv->serverGLXvendor); - priv->serverGLXvendor = 0x0; /* to protect against double free's */ - } - if(priv->serverGLXversion) { - Xfree((char*)priv->serverGLXversion); - priv->serverGLXversion = 0x0; /* to protect against double free's */ - } - -#if 0 /* GLX_DIRECT_RENDERING */ - /* Free the direct rendering per display data */ - if (priv->driDisplay.private) - (*priv->driDisplay.destroyDisplay)(priv->dpy, - priv->driDisplay.private); - priv->driDisplay.private = NULL; -#endif - - Xfree((char*) priv); - return 0; -} - -/************************************************************************/ - -/* -** Query the version of the GLX extension. This procedure works even if -** the client extension is not completely set up. -*/ -static Bool QueryVersion(Display *dpy, int opcode, int *major, int *minor) -{ - xGLXQueryVersionReq *req; - xGLXQueryVersionReply reply; - - /* Send the glXQueryVersion request */ - LockDisplay(dpy); - GetReq(GLXQueryVersion,req); - req->reqType = opcode; - req->glxCode = X_GLXQueryVersion; - req->majorVersion = GLX_MAJOR_VERSION; - req->minorVersion = GLX_MINOR_VERSION; - _XReply(dpy, (xReply*) &reply, 0, False); - UnlockDisplay(dpy); - SyncHandle(); - - if (reply.majorVersion != GLX_MAJOR_VERSION) { - /* - ** The server does not support the same major release as this - ** client. - */ - return GL_FALSE; - } - *major = reply.majorVersion; - *minor = min(reply.minorVersion, GLX_MINOR_VERSION); - return GL_TRUE; -} - - -void -__glXInitializeVisualConfigFromTags( __GLcontextModes *config, int count, - const INT32 *bp, Bool tagged_only, - Bool fbconfig_style_tags ) -{ - int i; - - if (!tagged_only) { - /* Copy in the first set of properties */ - config->visualID = *bp++; - - config->visualType = _gl_convert_from_x_visual_type( *bp++ ); - - config->rgbMode = *bp++; - - config->redBits = *bp++; - config->greenBits = *bp++; - config->blueBits = *bp++; - config->alphaBits = *bp++; - config->accumRedBits = *bp++; - config->accumGreenBits = *bp++; - config->accumBlueBits = *bp++; - config->accumAlphaBits = *bp++; - - config->doubleBufferMode = *bp++; - config->stereoMode = *bp++; - - config->rgbBits = *bp++; - config->depthBits = *bp++; - config->stencilBits = *bp++; - config->numAuxBuffers = *bp++; - config->level = *bp++; - - count -= __GLX_MIN_CONFIG_PROPS; - } - - /* - ** Additional properties may be in a list at the end - ** of the reply. They are in pairs of property type - ** and property value. - */ - -#define FETCH_OR_SET(tag) \ - config-> tag = ( fbconfig_style_tags ) ? *bp++ : 1 - - for (i = 0; i < count; i += 2 ) { - switch(*bp++) { - case GLX_RGBA: - FETCH_OR_SET( rgbMode ); - break; - case GLX_BUFFER_SIZE: - config->rgbBits = *bp++; - break; - case GLX_LEVEL: - config->level = *bp++; - break; - case GLX_DOUBLEBUFFER: - FETCH_OR_SET( doubleBufferMode ); - break; - case GLX_STEREO: - FETCH_OR_SET( stereoMode ); - break; - case GLX_AUX_BUFFERS: - config->numAuxBuffers = *bp++; - break; - case GLX_RED_SIZE: - config->redBits = *bp++; - break; - case GLX_GREEN_SIZE: - config->greenBits = *bp++; - break; - case GLX_BLUE_SIZE: - config->blueBits = *bp++; - break; - case GLX_ALPHA_SIZE: - config->alphaBits = *bp++; - break; - case GLX_DEPTH_SIZE: - config->depthBits = *bp++; - break; - case GLX_STENCIL_SIZE: - config->stencilBits = *bp++; - break; - case GLX_ACCUM_RED_SIZE: - config->accumRedBits = *bp++; - break; - case GLX_ACCUM_GREEN_SIZE: - config->accumGreenBits = *bp++; - break; - case GLX_ACCUM_BLUE_SIZE: - config->accumBlueBits = *bp++; - break; - case GLX_ACCUM_ALPHA_SIZE: - config->accumAlphaBits = *bp++; - break; - case GLX_VISUAL_CAVEAT_EXT: - config->visualRating = *bp++; - break; - case GLX_X_VISUAL_TYPE: - config->visualType = *bp++; - break; - case GLX_TRANSPARENT_TYPE: - config->transparentPixel = *bp++; - break; - case GLX_TRANSPARENT_INDEX_VALUE: - config->transparentIndex = *bp++; - break; - case GLX_TRANSPARENT_RED_VALUE: - config->transparentRed = *bp++; - break; - case GLX_TRANSPARENT_GREEN_VALUE: - config->transparentGreen = *bp++; - break; - case GLX_TRANSPARENT_BLUE_VALUE: - config->transparentBlue = *bp++; - break; - case GLX_TRANSPARENT_ALPHA_VALUE: - config->transparentAlpha = *bp++; - break; - case GLX_VISUAL_ID: - config->visualID = *bp++; - break; - case GLX_DRAWABLE_TYPE: - config->drawableType = *bp++; - break; - case GLX_RENDER_TYPE: - config->renderType = *bp++; - break; - case GLX_X_RENDERABLE: - config->xRenderable = *bp++; - break; - case GLX_FBCONFIG_ID: - config->fbconfigID = *bp++; - break; - case GLX_MAX_PBUFFER_WIDTH: - config->maxPbufferWidth = *bp++; - break; - case GLX_MAX_PBUFFER_HEIGHT: - config->maxPbufferHeight = *bp++; - break; - case GLX_MAX_PBUFFER_PIXELS: - config->maxPbufferPixels = *bp++; - break; - case GLX_OPTIMAL_PBUFFER_WIDTH_SGIX: - config->optimalPbufferWidth = *bp++; - break; - case GLX_OPTIMAL_PBUFFER_HEIGHT_SGIX: - config->optimalPbufferHeight = *bp++; - break; - case GLX_VISUAL_SELECT_GROUP_SGIX: - config->visualSelectGroup = *bp++; - break; - case GLX_SWAP_METHOD_OML: - config->swapMethod = *bp++; - break; - case GLX_SAMPLE_BUFFERS_SGIS: - config->sampleBuffers = *bp++; - break; - case GLX_SAMPLES_SGIS: - config->samples = *bp++; - break; - case None: - i = count; - break; - default: - break; - } - } - - config->renderType = (config->rgbMode) ? GLX_RGBA_BIT : GLX_COLOR_INDEX_BIT; - - config->haveAccumBuffer = ((config->accumRedBits + - config->accumGreenBits + - config->accumBlueBits + - config->accumAlphaBits) > 0); - config->haveDepthBuffer = (config->depthBits > 0); - config->haveStencilBuffer = (config->stencilBits > 0); -} - - -#ifdef GLX_DIRECT_RENDERING -static unsigned -filter_modes( __GLcontextModes ** server_modes, - const __GLcontextModes * driver_modes ) -{ - __GLcontextModes * m; - __GLcontextModes ** prev_next; - const __GLcontextModes * check; - unsigned modes_count = 0; - - if ( driver_modes == NULL ) { - fprintf(stderr, "libGL warning: 3D driver returned no fbconfigs.\n"); - return 0; - } - - /* For each mode in server_modes, check to see if a matching mode exists - * in driver_modes. If not, then the mode is not available. - */ - - prev_next = server_modes; - for ( m = *prev_next ; m != NULL ; m = *prev_next ) { - GLboolean do_delete = GL_TRUE; - - for ( check = driver_modes ; check != NULL ; check = check->next ) { - if ( _gl_context_modes_are_same( m, check ) ) { - do_delete = GL_FALSE; - break; - } - } - - /* The 3D has to support all the modes that match the GLX visuals - * sent from the X server. - */ - if ( do_delete && (m->visualID != 0) ) { - do_delete = GL_FALSE; - - fprintf(stderr, "libGL warning: 3D driver claims to not support " - "visual 0x%02x\n", m->visualID); - } - - if ( do_delete ) { - *prev_next = m->next; - - m->next = NULL; - _gl_context_modes_destroy( m ); - } - else { - modes_count++; - prev_next = & m->next; - } - } - - return modes_count; -} - - -/** - * Implement \c __DRIinterfaceMethods::getProcAddress. - */ -static __DRIfuncPtr get_proc_address( const char * proc_name ) -{ - if (strcmp( proc_name, "glxEnableExtension" ) == 0) { - return (__DRIfuncPtr) __glXScrEnableExtension; - } - - return NULL; -} - - -/** - * Table of functions exported by the loader to the driver. - */ -static const __DRIinterfaceMethods interface_methods = { - get_proc_address, - - _gl_context_modes_create, - _gl_context_modes_destroy, - - __glXFindDRIScreen, - __glXWindowExists, - - XF86DRICreateContextWithConfig, - XF86DRIDestroyContext, - - XF86DRICreateDrawable, - XF86DRIDestroyDrawable, - XF86DRIGetDrawableInfo, - - __glXGetUST, - glXGetMscRateOML, -}; - - -/** - * Perform the required libGL-side initialization and call the client-side - * driver's \c __driCreateNewScreen function. - * - * \param dpy Display pointer. - * \param scrn Screen number on the display. - * \param psc DRI screen information. - * \param driDpy DRI display information. - * \param createNewScreen Pointer to the client-side driver's - * \c __driCreateNewScreen function. - * \returns A pointer to the \c __DRIscreenPrivate structure returned by - * the client-side driver on success, or \c NULL on failure. - * - * \todo This function needs to be modified to remove context-modes from the - * list stored in the \c __GLXscreenConfigsRec to match the list - * returned by the client-side driver. - */ -static void * -CallCreateNewScreen(Display *dpy, int scrn, __DRIscreen *psc, - __DRIdisplay * driDpy, - PFNCREATENEWSCREENFUNC createNewScreen) -{ - __DRIscreenPrivate *psp = NULL; -#ifndef GLX_USE_APPLEGL - drm_handle_t hSAREA; - drmAddress pSAREA = MAP_FAILED; - char *BusID; - __DRIversion ddx_version; - __DRIversion dri_version; - __DRIversion drm_version; - __DRIframebuffer framebuffer; - int fd = -1; - int status; - const char * err_msg; - const char * err_extra; - int api_ver = __glXGetInternalVersion(); - - - dri_version.major = driDpy->private->driMajor; - dri_version.minor = driDpy->private->driMinor; - dri_version.patch = driDpy->private->driPatch; - - - err_msg = "XF86DRIOpenConnection"; - err_extra = NULL; - - framebuffer.base = MAP_FAILED; - framebuffer.dev_priv = NULL; - - if (XF86DRIOpenConnection(dpy, scrn, &hSAREA, &BusID)) { - fd = drmOpen(NULL,BusID); - Xfree(BusID); /* No longer needed */ - - err_msg = "open DRM"; - err_extra = strerror( -fd ); - - if (fd >= 0) { - drm_magic_t magic; - - err_msg = "drmGetMagic"; - err_extra = NULL; - - if (!drmGetMagic(fd, &magic)) { - drmVersionPtr version = drmGetVersion(fd); - if (version) { - drm_version.major = version->version_major; - drm_version.minor = version->version_minor; - drm_version.patch = version->version_patchlevel; - drmFreeVersion(version); - } - else { - drm_version.major = -1; - drm_version.minor = -1; - drm_version.patch = -1; - } - - err_msg = "XF86DRIAuthConnection"; - if (XF86DRIAuthConnection(dpy, scrn, magic)) { - char *driverName; - - /* - * Get device name (like "tdfx") and the ddx version - * numbers. We'll check the version in each DRI driver's - * "createNewScreen" function. - */ - err_msg = "XF86DRIGetClientDriverName"; - if (XF86DRIGetClientDriverName(dpy, scrn, - &ddx_version.major, - &ddx_version.minor, - &ddx_version.patch, - &driverName)) { - drm_handle_t hFB; - int junk; - - /* No longer needed. */ - Xfree( driverName ); - - - /* - * Get device-specific info. pDevPriv will point to a struct - * (such as DRIRADEONRec in xfree86/driver/ati/radeon_dri.h) - * that has information about the screen size, depth, pitch, - * ancilliary buffers, DRM mmap handles, etc. - */ - err_msg = "XF86DRIGetDeviceInfo"; - if (XF86DRIGetDeviceInfo(dpy, scrn, - &hFB, - &junk, - &framebuffer.size, - &framebuffer.stride, - &framebuffer.dev_priv_size, - &framebuffer.dev_priv)) { - framebuffer.width = DisplayWidth(dpy, scrn); - framebuffer.height = DisplayHeight(dpy, scrn); - - /* - * Map the framebuffer region. - */ - status = drmMap(fd, hFB, framebuffer.size, - (drmAddressPtr)&framebuffer.base); - - err_msg = "drmMap of framebuffer"; - err_extra = strerror( -status ); - - if ( status == 0 ) { - /* - * Map the SAREA region. Further mmap regions - * may be setup in each DRI driver's - * "createNewScreen" function. - */ - status = drmMap(fd, hSAREA, SAREA_MAX, - &pSAREA); - - err_msg = "drmMap of sarea"; - err_extra = strerror( -status ); - - if ( status == 0 ) { - __GLcontextModes * driver_modes = NULL; - __GLXscreenConfigs *configs = psc->screenConfigs; - - err_msg = "InitDriver"; - err_extra = NULL; - psp = (*createNewScreen)(dpy, scrn, - psc, - configs->configs, - & ddx_version, - & dri_version, - & drm_version, - & framebuffer, - pSAREA, - fd, - api_ver, - & interface_methods, - & driver_modes ); - - filter_modes( & configs->configs, - driver_modes ); - _gl_context_modes_destroy( driver_modes ); - } - } - } - } - } - } - } - } - - if ( psp == NULL ) { - if ( pSAREA != MAP_FAILED ) { - (void)drmUnmap(pSAREA, SAREA_MAX); - } - - if ( framebuffer.base != MAP_FAILED ) { - (void)drmUnmap((drmAddress)framebuffer.base, framebuffer.size); - } - - if ( framebuffer.dev_priv != NULL ) { - Xfree(framebuffer.dev_priv); - } - - if ( fd >= 0 ) { - (void)drmClose(fd); - } - - (void)XF86DRICloseConnection(dpy, scrn); - - if ( err_extra != NULL ) { - fprintf(stderr, "libGL error: %s failed (%s)\n", err_msg, - err_extra); - } - else { - fprintf(stderr, "libGL error: %s failed\n", err_msg ); - } - - fprintf(stderr, "libGL error: reverting to (slow) indirect rendering\n"); - } -#endif /* !GLX_USE_APPLEGL */ - - return psp; -} -#endif /* GLX_DIRECT_RENDERING */ - - -/* -** Allocate the memory for the per screen configs for each screen. -** If that works then fetch the per screen configs data. -*/ -static Bool AllocAndFetchScreenConfigs(Display *dpy, __GLXdisplayPrivate *priv) -{ - xGLXGetVisualConfigsReq *req; - xGLXGetFBConfigsReq *fb_req; - xGLXVendorPrivateWithReplyReq *vpreq; - xGLXGetFBConfigsSGIXReq *sgi_req; - xGLXGetVisualConfigsReply reply; - __GLXscreenConfigs *psc; - __GLcontextModes *config; - GLint i, j, nprops, screens; - INT32 buf[__GLX_TOTAL_CONFIG], *props; - unsigned supported_request = 0; - unsigned prop_size; - - /* - ** First allocate memory for the array of per screen configs. - */ - screens = ScreenCount(dpy); - psc = (__GLXscreenConfigs*) Xmalloc(screens * sizeof(__GLXscreenConfigs)); - if (!psc) { - return GL_FALSE; - } - memset(psc, 0, screens * sizeof(__GLXscreenConfigs)); - priv->screenConfigs = psc; - - priv->serverGLXversion = __glXGetStringFromServer(dpy, priv->majorOpcode, - X_GLXQueryServerString, - 0, GLX_VERSION); - if ( priv->serverGLXversion == NULL ) { - FreeScreenConfigs(priv); - return GL_FALSE; - } - - if ( atof( priv->serverGLXversion ) >= 1.3 ) { - supported_request = 1; - } - - /* - ** Now fetch each screens configs structures. If a screen supports - ** GL (by returning a numVisuals > 0) then allocate memory for our - ** config structure and then fill it in. - */ - for (i = 0; i < screens; i++, psc++) { - if ( supported_request != 1 ) { - psc->serverGLXexts = __glXGetStringFromServer(dpy, priv->majorOpcode, - X_GLXQueryServerString, - i, GLX_EXTENSIONS); - if ( strstr( psc->serverGLXexts, "GLX_SGIX_fbconfig" ) != NULL ) { - supported_request = 2; - } - else { - supported_request = 3; - } - } - - - LockDisplay(dpy); - switch( supported_request ) { - case 1: - GetReq(GLXGetFBConfigs,fb_req); - fb_req->reqType = priv->majorOpcode; - fb_req->glxCode = X_GLXGetFBConfigs; - fb_req->screen = i; - break; - - case 2: - GetReqExtra(GLXVendorPrivateWithReply, - sz_xGLXGetFBConfigsSGIXReq-sz_xGLXVendorPrivateWithReplyReq,vpreq); - sgi_req = (xGLXGetFBConfigsSGIXReq *) vpreq; - sgi_req->reqType = priv->majorOpcode; - sgi_req->glxCode = X_GLXVendorPrivateWithReply; - sgi_req->vendorCode = X_GLXvop_GetFBConfigsSGIX; - sgi_req->screen = i; - break; - - case 3: - GetReq(GLXGetVisualConfigs,req); - req->reqType = priv->majorOpcode; - req->glxCode = X_GLXGetVisualConfigs; - req->screen = i; - break; - } - - if (!_XReply(dpy, (xReply*) &reply, 0, False)) { - /* Something is busted. Punt. */ - UnlockDisplay(dpy); - FreeScreenConfigs(priv); - return GL_FALSE; - } - - UnlockDisplay(dpy); - if (!reply.numVisuals) { - /* This screen does not support GL rendering */ - UnlockDisplay(dpy); - continue; - } - - /* FIXME: Is the __GLX_MIN_CONFIG_PROPS test correct for - * FIXME: FBconfigs? - */ - /* Check number of properties */ - nprops = reply.numProps; - if ((nprops < __GLX_MIN_CONFIG_PROPS) || - (nprops > __GLX_MAX_CONFIG_PROPS)) { - /* Huh? Not in protocol defined limits. Punt */ - UnlockDisplay(dpy); - SyncHandle(); - FreeScreenConfigs(priv); - return GL_FALSE; - } - - /* Allocate memory for our config structure */ - psc->configs = _gl_context_modes_create(reply.numVisuals, - sizeof(__GLcontextModes)); - if (!psc->configs) { - UnlockDisplay(dpy); - SyncHandle(); - FreeScreenConfigs(priv); - return GL_FALSE; - } - - /* Allocate memory for the properties, if needed */ - if ( supported_request != 3 ) { - nprops *= 2; - } - - prop_size = nprops * __GLX_SIZE_INT32; - - if (prop_size <= sizeof(buf)) { - props = buf; - } else { - props = (INT32 *) Xmalloc(prop_size); - } - - /* Read each config structure and convert it into our format */ - config = psc->configs; - for (j = 0; j < reply.numVisuals; j++) { - assert( config != NULL ); - _XRead(dpy, (char *)props, prop_size); - - if ( supported_request != 3 ) { - config->rgbMode = GL_TRUE; - config->drawableType = GLX_WINDOW_BIT; - } - else { - config->drawableType = GLX_WINDOW_BIT | GLX_PIXMAP_BIT; - } - - __glXInitializeVisualConfigFromTags( config, nprops, props, - (supported_request != 3), - GL_TRUE ); - if ( config->fbconfigID == GLX_DONT_CARE ) { - config->fbconfigID = config->visualID; - } - config->screen = i; - config = config->next; - } - if (props != buf) { - Xfree((char *)props); - } - UnlockDisplay(dpy); - -#ifdef GLX_DIRECT_RENDERING - /* Initialize per screen dynamic client GLX extensions */ - psc->ext_list_first_time = GL_TRUE; - /* Initialize the direct rendering per screen data and functions */ - if (priv->driDisplay.private != NULL) { - /* FIXME: Should it be some sort of an error if createNewScreen[i] - * FIXME: is NULL? - */ - if (priv->driDisplay.createNewScreen && - priv->driDisplay.createNewScreen[i]) { - - psc->driScreen.screenConfigs = (void *)psc; - psc->driScreen.private = - CallCreateNewScreen(dpy, i, & psc->driScreen, - & priv->driDisplay, - priv->driDisplay.createNewScreen[i] ); - } - } -#endif - } - SyncHandle(); - return GL_TRUE; -} - -/* -** Initialize the client side extension code. -*/ -__GLXdisplayPrivate *__glXInitialize(Display* dpy) -{ - XExtDisplayInfo *info = __glXFindDisplay(dpy); - XExtData **privList, *private, *found; - __GLXdisplayPrivate *dpyPriv; - XEDataObject dataObj; - int major, minor; - -#if defined(USE_XTHREADS) - { - static int firstCall = 1; - if (firstCall) { - /* initialize the GLX mutexes */ - xmutex_init(&__glXmutex); - firstCall = 0; - } - } -#endif - - INIT_MESA_SPARC - /* The one and only long long lock */ - __glXLock(); - - if (!XextHasExtension(info)) { - /* No GLX extension supported by this server. Oh well. */ - __glXUnlock(); - XMissingExtension(dpy, __glXExtensionName); - return 0; - } - - /* See if a display private already exists. If so, return it */ - dataObj.display = dpy; - privList = XEHeadOfExtensionList(dataObj); - found = XFindOnExtensionList(privList, info->codes->extension); - if (found) { - __glXUnlock(); - return (__GLXdisplayPrivate *) found->private_data; - } - - /* See if the versions are compatible */ - if (!QueryVersion(dpy, info->codes->major_opcode, &major, &minor)) { - /* The client and server do not agree on versions. Punt. */ - __glXUnlock(); - return 0; - } - - /* - ** Allocate memory for all the pieces needed for this buffer. - */ - private = (XExtData *) Xmalloc(sizeof(XExtData)); - if (!private) { - __glXUnlock(); - return 0; - } - dpyPriv = (__GLXdisplayPrivate *) Xmalloc(sizeof(__GLXdisplayPrivate)); - if (!dpyPriv) { - __glXUnlock(); - Xfree((char*) private); - return 0; - } - - /* - ** Init the display private and then read in the screen config - ** structures from the server. - */ - dpyPriv->majorOpcode = info->codes->major_opcode; - dpyPriv->majorVersion = major; - dpyPriv->minorVersion = minor; - dpyPriv->dpy = dpy; - - dpyPriv->serverGLXvendor = 0x0; - dpyPriv->serverGLXversion = 0x0; - -#ifdef GLX_DIRECT_RENDERING - /* - ** Initialize the direct rendering per display data and functions. - ** Note: This _must_ be done before calling any other DRI routines - ** (e.g., those called in AllocAndFetchScreenConfigs). - */ - if (getenv("LIBGL_ALWAYS_INDIRECT")) { - /* Assinging zero here assures we'll never go direct */ - dpyPriv->driDisplay.private = 0; - dpyPriv->driDisplay.destroyDisplay = 0; - } - else { - dpyPriv->driDisplay.private = - driCreateDisplay(dpy, &dpyPriv->driDisplay); - } -#endif - - if (!AllocAndFetchScreenConfigs(dpy, dpyPriv)) { - __glXUnlock(); - Xfree((char*) dpyPriv); - Xfree((char*) private); - return 0; - } - - /* - ** Fill in the private structure. This is the actual structure that - ** hangs off of the Display structure. Our private structure is - ** referred to by this structure. Got that? - */ - private->number = info->codes->extension; - private->next = 0; - private->free_private = __glXFreeDisplayPrivate; - private->private_data = (char *) dpyPriv; - XAddToExtensionList(privList, private); - - if (dpyPriv->majorVersion == 1 && dpyPriv->minorVersion >= 1) { - __glXClientInfo(dpy, dpyPriv->majorOpcode); - } - __glXUnlock(); - - return dpyPriv; -} - -/* -** Setup for sending a GLX command on dpy. Make sure the extension is -** initialized. Try to avoid calling __glXInitialize as its kinda slow. -*/ -CARD8 __glXSetupForCommand(Display *dpy) -{ - GLXContext gc; - __GLXdisplayPrivate *priv; - - /* If this thread has a current context, flush its rendering commands */ - gc = __glXGetCurrentContext(); - if (gc->currentDpy) { - /* Flush rendering buffer of the current context, if any */ - (void) __glXFlushRenderBuffer(gc, gc->pc); - - if (gc->currentDpy == dpy) { - /* Use opcode from gc because its right */ - INIT_MESA_SPARC - return gc->majorOpcode; - } else { - /* - ** Have to get info about argument dpy because it might be to - ** a different server - */ - } - } - - /* Forced to lookup extension via the slow initialize route */ - priv = __glXInitialize(dpy); - if (!priv) { - return 0; - } - return priv->majorOpcode; -} - -/** - * Flush the drawing command transport buffer. - * - * \param ctx Context whose transport buffer is to be flushed. - * \param pc Pointer to first unused buffer location. - * - * \todo - * Modify this function to use \c ctx->pc instead of the explicit - * \c pc parameter. - */ -GLubyte *__glXFlushRenderBuffer(__GLXcontext *ctx, GLubyte *pc) -{ - Display * const dpy = ctx->currentDpy; -#ifdef USE_XCB - XCBConnection *c = XCBConnectionOfDisplay(dpy); -#else - xGLXRenderReq *req; -#endif /* USE_XCB */ - const GLint size = pc - ctx->buf; - - if ( (dpy != NULL) && (size > 0) ) { -#ifdef USE_XCB - XCBGlxRender(c, ctx->currentContextTag, size, (char *)ctx->buf); -#else - /* Send the entire buffer as an X request */ - LockDisplay(dpy); - GetReq(GLXRender,req); - req->reqType = ctx->majorOpcode; - req->glxCode = X_GLXRender; - req->contextTag = ctx->currentContextTag; - req->length += (size + 3) >> 2; - _XSend(dpy, (char *)ctx->buf, size); - UnlockDisplay(dpy); - SyncHandle(); -#endif - } - - /* Reset pointer and return it */ - ctx->pc = ctx->buf; - return ctx->pc; -} - - -/** - * Send a portion of a GLXRenderLarge command to the server. The advantage of - * this function over \c __glXSendLargeCommand is that callers can use the - * data buffer in the GLX context and may be able to avoid allocating an - * extra buffer. The disadvantage is the clients will have to do more - * GLX protocol work (i.e., calculating \c totalRequests, etc.). - * - * \sa __glXSendLargeCommand - * - * \param gc GLX context - * \param requestNumber Which part of the whole command is this? The first - * request is 1. - * \param totalRequests How many requests will there be? - * \param data Command data. - * \param dataLen Size, in bytes, of the command data. - */ -void __glXSendLargeChunk(__GLXcontext *gc, GLint requestNumber, - GLint totalRequests, - const GLvoid * data, GLint dataLen) -{ - Display *dpy = gc->currentDpy; -#ifdef USE_XCB - XCBConnection *c = XCBConnectionOfDisplay(dpy); - XCBGlxRenderLarge(c, gc->currentContextTag, requestNumber, totalRequests, dataLen, data); -#else - xGLXRenderLargeReq *req; - - if ( requestNumber == 1 ) { - LockDisplay(dpy); - } - - GetReq(GLXRenderLarge,req); - req->reqType = gc->majorOpcode; - req->glxCode = X_GLXRenderLarge; - req->contextTag = gc->currentContextTag; - req->length += (dataLen + 3) >> 2; - req->requestNumber = requestNumber; - req->requestTotal = totalRequests; - req->dataBytes = dataLen; - Data(dpy, data, dataLen); - - if ( requestNumber == totalRequests ) { - UnlockDisplay(dpy); - SyncHandle(); - } -#endif /* USE_XCB */ -} - - -/** - * Send a command that is too large for the GLXRender protocol request. - * - * Send a large command, one that is too large for some reason to - * send using the GLXRender protocol request. One reason to send - * a large command is to avoid copying the data. - * - * \param ctx GLX context - * \param header Header data. - * \param headerLen Size, in bytes, of the header data. It is assumed that - * the header data will always be small enough to fit in - * a single X protocol packet. - * \param data Command data. - * \param dataLen Size, in bytes, of the command data. - */ -void __glXSendLargeCommand(__GLXcontext *ctx, - const GLvoid *header, GLint headerLen, - const GLvoid *data, GLint dataLen) -{ - GLint maxSize; - GLint totalRequests, requestNumber; - - /* - ** Calculate the maximum amount of data can be stuffed into a single - ** packet. sz_xGLXRenderReq is added because bufSize is the maximum - ** packet size minus sz_xGLXRenderReq. - */ - maxSize = (ctx->bufSize + sz_xGLXRenderReq) - sz_xGLXRenderLargeReq; - totalRequests = 1 + (dataLen / maxSize); - if (dataLen % maxSize) totalRequests++; - - /* - ** Send all of the command, except the large array, as one request. - */ - assert( headerLen <= maxSize ); - __glXSendLargeChunk(ctx, 1, totalRequests, header, headerLen); - - /* - ** Send enough requests until the whole array is sent. - */ - for ( requestNumber = 2 ; requestNumber <= (totalRequests - 1) ; requestNumber++ ) { - __glXSendLargeChunk(ctx, requestNumber, totalRequests, data, maxSize); - data = (const GLvoid *) (((const GLubyte *) data) + maxSize); - dataLen -= maxSize; - assert( dataLen > 0 ); - } - - assert( dataLen <= maxSize ); - __glXSendLargeChunk(ctx, requestNumber, totalRequests, data, dataLen); -} - -/************************************************************************/ - -GLXContext glXGetCurrentContext(void) -{ - GLXContext cx = __glXGetCurrentContext(); - - if (cx == &dummyContext) { - return NULL; - } else { - return cx; - } -} - -GLXDrawable glXGetCurrentDrawable(void) -{ - GLXContext gc = __glXGetCurrentContext(); - return gc->currentDrawable; -} - - -/************************************************************************/ - -#ifdef GLX_DIRECT_RENDERING -/* Return the DRI per screen structure */ -__DRIscreen *__glXFindDRIScreen(__DRInativeDisplay *dpy, int scrn) -{ - __DRIscreen *pDRIScreen = NULL; - XExtDisplayInfo *info = __glXFindDisplay(dpy); - XExtData **privList, *found; - __GLXdisplayPrivate *dpyPriv; - XEDataObject dataObj; - - __glXLock(); - dataObj.display = dpy; - privList = XEHeadOfExtensionList(dataObj); - found = XFindOnExtensionList(privList, info->codes->extension); - __glXUnlock(); - - if (found) { - dpyPriv = (__GLXdisplayPrivate *)found->private_data; - pDRIScreen = &dpyPriv->screenConfigs[scrn].driScreen; - } - - return pDRIScreen; -} -#endif - -/************************************************************************/ - -static Bool SendMakeCurrentRequest( Display *dpy, CARD8 opcode, - GLXContextID gc, GLXContextTag old_gc, GLXDrawable draw, GLXDrawable read, - xGLXMakeCurrentReply * reply ); - -/** - * Sends a GLX protocol message to the specified display to make the context - * and the drawables current. - * - * \param dpy Display to send the message to. - * \param opcode Major opcode value for the display. - * \param gc_id Context tag for the context to be made current. - * \param draw Drawable ID for the "draw" drawable. - * \param read Drawable ID for the "read" drawable. - * \param reply Space to store the X-server's reply. - * - * \warning - * This function assumes that \c dpy is locked with \c LockDisplay on entry. - */ -static Bool SendMakeCurrentRequest( Display *dpy, CARD8 opcode, - GLXContextID gc_id, GLXContextTag gc_tag, - GLXDrawable draw, GLXDrawable read, - xGLXMakeCurrentReply * reply ) -{ - if ( draw == read ) { - xGLXMakeCurrentReq *req; - - GetReq(GLXMakeCurrent,req); - req->reqType = opcode; - req->glxCode = X_GLXMakeCurrent; - req->drawable = draw; - req->context = gc_id; - req->oldContextTag = gc_tag; - } - else { - __GLXdisplayPrivate *priv = __glXInitialize(dpy); - - /* If the server can support the GLX 1.3 version, we should - * perfer that. Not only that, some servers support GLX 1.3 but - * not the SGI extension. - */ - - if ( (priv->majorVersion > 1) || (priv->minorVersion >= 3) ) { - xGLXMakeContextCurrentReq *req; - - GetReq(GLXMakeContextCurrent,req); - req->reqType = opcode; - req->glxCode = X_GLXMakeContextCurrent; - req->drawable = draw; - req->readdrawable = read; - req->context = gc_id; - req->oldContextTag = gc_tag; - } - else { - xGLXVendorPrivateWithReplyReq *vpreq; - xGLXMakeCurrentReadSGIReq *req; - - GetReqExtra(GLXVendorPrivateWithReply, - sz_xGLXMakeCurrentReadSGIReq-sz_xGLXVendorPrivateWithReplyReq,vpreq); - req = (xGLXMakeCurrentReadSGIReq *)vpreq; - req->reqType = opcode; - req->glxCode = X_GLXVendorPrivateWithReply; - req->vendorCode = X_GLXvop_MakeCurrentReadSGI; - req->drawable = draw; - req->readable = read; - req->context = gc_id; - req->oldContextTag = gc_tag; - } - } - - return _XReply(dpy, (xReply*) reply, 0, False); -} - - -#ifdef GLX_DIRECT_RENDERING -static Bool BindContextWrapper( Display *dpy, GLXContext gc, - GLXDrawable draw, GLXDrawable read ) -{ - return (*gc->driContext.bindContext)(dpy, gc->screen, draw, read, - & gc->driContext); -} - - -static Bool UnbindContextWrapper( GLXContext gc ) -{ - return (*gc->driContext.unbindContext)(gc->currentDpy, gc->screen, - gc->currentDrawable, - gc->currentReadable, - & gc->driContext ); -} -#endif /* GLX_DIRECT_RENDERING */ - - -/* -** Make a particular context current. -** NOTE: this is in this file so that it can access dummyContext. -*/ -USED static Bool MakeContextCurrent(Display *dpy, GLXDrawable draw, - GLXDrawable read, GLXContext gc) -{ - xGLXMakeCurrentReply reply; - GLXContext oldGC; - CARD8 opcode, oldOpcode; - Bool sentRequestToOldDpy = False; - Bool bindReturnValue = True; - - opcode = __glXSetupForCommand(dpy); - if (!opcode) { - return GL_FALSE; - } - - /* - ** Make sure that the new context has a nonzero ID. In the request, - ** a zero context ID is used only to mean that we bind to no current - ** context. - */ - if ((gc != NULL) && (gc->xid == None)) { - return GL_FALSE; - } - - oldGC = __glXGetCurrentContext(); - oldOpcode = (gc == oldGC) ? opcode : __glXSetupForCommand(dpy); - if (!oldOpcode) { - return GL_FALSE; - } - - if ((dpy != oldGC->currentDpy || (gc && gc->isDirect)) && - !oldGC->isDirect && oldGC != &dummyContext) { - /* - ** We are either switching from one dpy to another and have to - ** send a request to the previous dpy to unbind the previous - ** context, or we are switching away from a indirect context to - ** a direct context and have to send a request to the dpy to - ** unbind the previous context. - */ - sentRequestToOldDpy = True; - LockDisplay(oldGC->currentDpy); - if ( ! SendMakeCurrentRequest( oldGC->currentDpy, oldOpcode, None, - oldGC->currentContextTag, None, None, - &reply ) ) { - /* The make current failed. Just return GL_FALSE. */ - UnlockDisplay(oldGC->currentDpy); - SyncHandle(); - return GL_FALSE; - } - - oldGC->currentContextTag = 0; - } - - _glapi_check_multithread(); - -#ifdef GLX_DIRECT_RENDERING - /* Unbind the old direct rendering context */ - if (oldGC->isDirect) { - if (oldGC->driContext.private) { - if (! UnbindContextWrapper( oldGC )) { - /* The make current failed. Just return GL_FALSE. */ - return GL_FALSE; - } - } - oldGC->currentContextTag = 0; - } - - /* Bind the direct rendering context to the drawable */ - if (gc && gc->isDirect) { - if (gc->driContext.private) { - bindReturnValue = BindContextWrapper( dpy, gc, draw, read ); - } - } else { -#endif - /* Send a glXMakeCurrent request to bind the new context. */ - LockDisplay(dpy); - - bindReturnValue = SendMakeCurrentRequest( dpy, opcode, - gc ? gc->xid : None, - oldGC->currentContextTag, - draw, read, &reply ); - UnlockDisplay(dpy); -#ifdef GLX_DIRECT_RENDERING - } -#endif - - - if (!bindReturnValue) { - /* The make current failed. */ - if (gc && !gc->isDirect) { - SyncHandle(); - } - -#ifdef GLX_DIRECT_RENDERING - /* If the old context was direct rendering, then re-bind to it. */ - if (oldGC->isDirect) { - if (oldGC->driContext.private) { - if (! BindContextWrapper( oldGC->currentDpy, oldGC, - oldGC->currentDrawable, - oldGC->currentReadable )) { - /* - ** The request failed; this cannot happen with the - ** current API. If in the future the API is - ** extended to allow context sharing between - ** clients, then this may fail (because another - ** client may have grabbed the context); in that - ** case, we cannot undo the previous request, and - ** cannot adhere to the "no-op" behavior. - */ - } - } - } else -#endif - /* - ** If we had just sent a request to a previous dpy, we have to - ** undo that request (because if a command fails, it should act - ** like a no-op) by making current to the previous context and - ** drawable. - */ - if (sentRequestToOldDpy) { - if ( !SendMakeCurrentRequest( oldGC->currentDpy, oldOpcode, - oldGC->xid, 0, - oldGC->currentDrawable, - oldGC->currentReadable, &reply ) ) { - UnlockDisplay(oldGC->currentDpy); - SyncHandle(); - /* - ** The request failed; this cannot happen with the - ** current API. If in the future the API is extended to - ** allow context sharing between clients, then this may - ** fail (because another client may have grabbed the - ** context); in that case, we cannot undo the previous - ** request, and cannot adhere to the "no-op" behavior. - */ - } - else { - UnlockDisplay(oldGC->currentDpy); - } - oldGC->currentContextTag = reply.contextTag; - } - return GL_FALSE; - } - - /* Update our notion of what is current */ - __glXLock(); - if (gc == oldGC) { - /* - ** Even though the contexts are the same the drawable might have - ** changed. Note that gc cannot be the dummy, and that oldGC - ** cannot be NULL, therefore if they are the same, gc is not - ** NULL and not the dummy. - */ - gc->currentDrawable = draw; - gc->currentReadable = read; - } else { - if (oldGC != &dummyContext) { - /* Old current context is no longer current to anybody */ - oldGC->currentDpy = 0; - oldGC->currentDrawable = None; - oldGC->currentReadable = None; - oldGC->currentContextTag = 0; - - if (oldGC->xid == None) { - /* - ** We are switching away from a context that was - ** previously destroyed, so we need to free the memory - ** for the old handle. - */ -#ifdef GLX_DIRECT_RENDERING - /* Destroy the old direct rendering context */ - if (oldGC->isDirect) { - if (oldGC->driContext.private) { - (*oldGC->driContext.destroyContext) - (dpy, oldGC->screen, oldGC->driContext.private); - oldGC->driContext.private = NULL; - } - } -#endif - __glXFreeContext(oldGC); - } - } - if (gc) { - __glXSetCurrentContext(gc); -#ifdef GLX_DIRECT_RENDERING - if (!gc->isDirect) { - if (!IndirectAPI) - IndirectAPI = __glXNewIndirectAPI(); - _glapi_set_dispatch(IndirectAPI); -# ifdef GLX_USE_APPLEGL - do { - extern void XAppleDRIUseIndirectDispatch(void); - XAppleDRIUseIndirectDispatch(); - } while (0); -# endif - } -#else - /* if not direct rendering, always need indirect dispatch */ - if (!IndirectAPI) - IndirectAPI = __glXNewIndirectAPI(); - _glapi_set_dispatch(IndirectAPI); -#endif - gc->currentDpy = dpy; - gc->currentDrawable = draw; - gc->currentReadable = read; - - if ( ! gc->isDirect ) { - __GLXattribute * state = (__GLXattribute *)(gc->client_state_private); - - gc->currentContextTag = reply.contextTag; - if ( state->array_state == NULL ) { - (void) glGetString( GL_EXTENSIONS ); - (void) glGetString( GL_VERSION ); - __glXInitVertexArrayState(gc); - } - } - else { - gc->currentContextTag = -1; - } - } else { - __glXSetCurrentContext(&dummyContext); -#ifdef GLX_DIRECT_RENDERING - _glapi_set_dispatch(NULL); /* no-op functions */ -#endif - } - } - __glXUnlock(); - return GL_TRUE; -} - - -PUBLIC Bool glXMakeCurrent(Display *dpy, GLXDrawable draw, GLXContext gc) -{ - return MakeContextCurrent( dpy, draw, draw, gc ); -} - -PUBLIC GLX_ALIAS(Bool, glXMakeCurrentReadSGI, - (Display *dpy, GLXDrawable d, GLXDrawable r, GLXContext ctx), - (dpy, d, r, ctx), MakeContextCurrent) - -PUBLIC GLX_ALIAS(Bool, glXMakeContextCurrent, - (Display *dpy, GLXDrawable d, GLXDrawable r, GLXContext ctx), - (dpy, d, r, ctx), MakeContextCurrent) - - -#ifdef DEBUG -void __glXDumpDrawBuffer(__GLXcontext *ctx) -{ - GLubyte *p = ctx->buf; - GLubyte *end = ctx->pc; - GLushort opcode, length; - - while (p < end) { - /* Fetch opcode */ - opcode = *((GLushort*) p); - length = *((GLushort*) (p + 2)); - printf("%2x: %5d: ", opcode, length); - length -= 4; - p += 4; - while (length > 0) { - printf("%08x ", *((unsigned *) p)); - p += 4; - length -= 4; - } - printf("\n"); - } -} -#endif - -#ifdef USE_SPARC_ASM -/* - * Used only when we are sparc, using sparc assembler. - * - */ - -static void -_glx_mesa_init_sparc_glapi_relocs(void) -{ - unsigned int *insn_ptr, *end_ptr; - unsigned long disp_addr; - - insn_ptr = &_mesa_sparc_glapi_begin; - end_ptr = &_mesa_sparc_glapi_end; - disp_addr = (unsigned long) &_glapi_Dispatch; - - /* - * Verbatim from Mesa sparc.c. It's needed because there doesn't - * seem to be a better way to do this: - * - * UNCONDITIONAL_JUMP ( (*_glapi_Dispatch) + entry_offset ) - * - * This code is patching in the ADDRESS of the pointer to the - * dispatch table. Hence, it must be called exactly once, because - * that address is not going to change. - * - * What it points to can change, but Mesa (and hence, we) assume - * that there is only one pointer. - * - */ - while (insn_ptr < end_ptr) { -#if ( defined(__sparc_v9__) && ( !defined(__linux__) || defined(__linux_64__) ) ) -/* - This code patches for 64-bit addresses. This had better - not happen for Sparc/Linux, no matter what architecture we - are building for. So, don't do this. - - The 'defined(__linux_64__)' is used here as a placeholder for - when we do do 64-bit usermode on sparc linux. - */ - insn_ptr[0] |= (disp_addr >> (32 + 10)); - insn_ptr[1] |= ((disp_addr & 0xffffffff) >> 10); - __glapi_sparc_icache_flush(&insn_ptr[0]); - insn_ptr[2] |= ((disp_addr >> 32) & ((1 << 10) - 1)); - insn_ptr[3] |= (disp_addr & ((1 << 10) - 1)); - __glapi_sparc_icache_flush(&insn_ptr[2]); - insn_ptr += 11; -#else - insn_ptr[0] |= (disp_addr >> 10); - insn_ptr[1] |= (disp_addr & ((1 << 10) - 1)); - __glapi_sparc_icache_flush(&insn_ptr[0]); - insn_ptr += 5; -#endif - } -} -#endif /* sparc ASM in use */ - |