diff options
Diffstat (limited to 'nx-X11/extras/Mesa_6.4.2/src/glx/x11/glxext.c')
| -rw-r--r-- | nx-X11/extras/Mesa_6.4.2/src/glx/x11/glxext.c | 1864 |
1 files changed, 1864 insertions, 0 deletions
diff --git a/nx-X11/extras/Mesa_6.4.2/src/glx/x11/glxext.c b/nx-X11/extras/Mesa_6.4.2/src/glx/x11/glxext.c new file mode 100644 index 000000000..eb6e870e9 --- /dev/null +++ b/nx-X11/extras/Mesa_6.4.2/src/glx/x11/glxext.c @@ -0,0 +1,1864 @@ +/* $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 */ + |