From 24bc15a386e37908396c3f6088f6fc98ceaa0f46 Mon Sep 17 00:00:00 2001 From: marha Date: Wed, 24 Feb 2010 18:34:17 +0000 Subject: Git update 24/2/2010" --- xorg-server/glx/glthread.c | 2 +- xorg-server/glx/glxdri2.c | 1617 ++++++++++++++++++++++---------------------- 2 files changed, 813 insertions(+), 806 deletions(-) (limited to 'xorg-server/glx') diff --git a/xorg-server/glx/glthread.c b/xorg-server/glx/glthread.c index 4caaea110..8b9f61885 100644 --- a/xorg-server/glx/glthread.c +++ b/xorg-server/glx/glthread.c @@ -129,7 +129,7 @@ _glthread_SetTSD(_glthread_TSD *tsd, void *ptr) _X_EXPORT unsigned long _glthread_GetID(void) { - abort(); /* XXX not implemented yet */ + OsAbort(); /* XXX not implemented yet */ return (unsigned long) 0; } diff --git a/xorg-server/glx/glxdri2.c b/xorg-server/glx/glxdri2.c index cf1d43452..edd29b0e1 100644 --- a/xorg-server/glx/glxdri2.c +++ b/xorg-server/glx/glxdri2.c @@ -1,805 +1,812 @@ -/* - * Copyright © 2007 Red Hat, Inc - * - * Permission to use, copy, modify, distribute, and sell this software - * and its documentation for any purpose is hereby granted without - * fee, provided that the above copyright notice appear in all copies - * and that both that copyright notice and this permission notice - * appear in supporting documentation, and that the name of Red Hat, - * Inc not be used in advertising or publicity pertaining to - * distribution of the software without specific, written prior - * permission. Red Hat, Inc makes no representations about the - * suitability of this software for any purpose. It is provided "as - * is" without express or implied warranty. - * - * RED HAT, INC DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, - * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN - * NO EVENT SHALL RED HAT, INC BE LIABLE FOR ANY SPECIAL, INDIRECT OR - * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS - * OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, - * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN - * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. - */ - -#ifdef HAVE_DIX_CONFIG_H -#include -#endif - -#include -#include -#include -#include -#include - -#include -#include -#include -#include - -#include -#include - -#define _XF86DRI_SERVER_ -#include -#include -#include - -#include "glxserver.h" -#include "glxutil.h" -#include "glxdricommon.h" - -#include "g_disptab.h" -#include "glapitable.h" -#include "glapi.h" -#include "glthread.h" -#include "dispatch.h" -#include "extension_string.h" - -typedef struct __GLXDRIscreen __GLXDRIscreen; -typedef struct __GLXDRIcontext __GLXDRIcontext; -typedef struct __GLXDRIdrawable __GLXDRIdrawable; - -struct __GLXDRIscreen { - __GLXscreen base; - __DRIscreen *driScreen; - void *driver; - int fd; - - xf86EnterVTProc *enterVT; - xf86LeaveVTProc *leaveVT; - - const __DRIcoreExtension *core; - const __DRIdri2Extension *dri2; - const __DRI2flushExtension *flush; - const __DRIcopySubBufferExtension *copySubBuffer; - const __DRIswapControlExtension *swapControl; - const __DRItexBufferExtension *texBuffer; - - unsigned char glx_enable_bits[__GLX_EXT_BYTES]; -}; - -struct __GLXDRIcontext { - __GLXcontext base; - __DRIcontext *driContext; -}; - -#define MAX_DRAWABLE_BUFFERS 5 - -struct __GLXDRIdrawable { - __GLXdrawable base; - __DRIdrawable *driDrawable; - __GLXDRIscreen *screen; - - /* Dimensions as last reported by DRI2GetBuffers. */ - int width; - int height; - __DRIbuffer buffers[MAX_DRAWABLE_BUFFERS]; - int count; -}; - -static void -__glXDRIdrawableDestroy(__GLXdrawable *drawable) -{ - __GLXDRIdrawable *private = (__GLXDRIdrawable *) drawable; - const __DRIcoreExtension *core = private->screen->core; - - (*core->destroyDrawable)(private->driDrawable); - - /* If the X window was destroyed, the dri DestroyWindow hook will - * aready have taken care of this, so only call if pDraw isn't NULL. */ - if (drawable->pDraw != NULL) - DRI2DestroyDrawable(drawable->pDraw); - - __glXDrawableRelease(drawable); - - xfree(private); -} - -static void -__glXDRIdrawableCopySubBuffer(__GLXdrawable *drawable, - int x, int y, int w, int h) -{ - __GLXDRIdrawable *private = (__GLXDRIdrawable *) drawable; - BoxRec box; - RegionRec region; - - box.x1 = x; - box.y1 = private->height - y - h; - box.x2 = x + w; - box.y2 = private->height - y; - REGION_INIT(drawable->pDraw->pScreen, ®ion, &box, 0); - - DRI2CopyRegion(drawable->pDraw, ®ion, - DRI2BufferFrontLeft, DRI2BufferBackLeft); -} - -static void -__glXDRIdrawableWaitX(__GLXdrawable *drawable) -{ - __GLXDRIdrawable *private = (__GLXDRIdrawable *) drawable; - BoxRec box; - RegionRec region; - - box.x1 = 0; - box.y1 = 0; - box.x2 = private->width; - box.y2 = private->height; - REGION_INIT(drawable->pDraw->pScreen, ®ion, &box, 0); - - DRI2CopyRegion(drawable->pDraw, ®ion, - DRI2BufferFakeFrontLeft, DRI2BufferFrontLeft); -} - -static void -__glXDRIdrawableWaitGL(__GLXdrawable *drawable) -{ - __GLXDRIdrawable *private = (__GLXDRIdrawable *) drawable; - BoxRec box; - RegionRec region; - - box.x1 = 0; - box.y1 = 0; - box.x2 = private->width; - box.y2 = private->height; - REGION_INIT(drawable->pDraw->pScreen, ®ion, &box, 0); - - DRI2CopyRegion(drawable->pDraw, ®ion, - DRI2BufferFrontLeft, DRI2BufferFakeFrontLeft); -} - -static void -__glXdriSwapEvent(ClientPtr client, void *data, int type, CARD64 ust, - CARD64 msc, CARD64 sbc) -{ - __GLXdrawable *drawable = data; - xGLXBufferSwapComplete wire; - - if (!(drawable->eventMask & GLX_BUFFER_SWAP_COMPLETE_INTEL_MASK)) - return; - - wire.type = __glXEventBase + GLX_BufferSwapComplete; - switch (type) { - case DRI2_EXCHANGE_COMPLETE: - wire.event_type = GLX_EXCHANGE_COMPLETE_INTEL; - break; - case DRI2_BLIT_COMPLETE: - wire.event_type = GLX_BLIT_COMPLETE_INTEL; - break; - case DRI2_FLIP_COMPLETE: - wire.event_type = GLX_FLIP_COMPLETE_INTEL; - break; - default: - /* unknown swap completion type */ - break; - } - wire.sequenceNumber = client->sequence; - wire.drawable = drawable->drawId; - wire.ust_hi = ust >> 32; - wire.ust_lo = ust & 0xffffffff; - wire.msc_hi = msc >> 32; - wire.msc_lo = msc & 0xffffffff; - wire.sbc_hi = sbc >> 32; - wire.sbc_lo = sbc & 0xffffffff; - - WriteEventsToClient(client, 1, (xEvent *) &wire); -} - -/* - * Copy or flip back to front, honoring the swap interval if possible. - * - * If the kernel supports it, we request an event for the frame when the - * swap should happen, then perform the copy when we receive it. - */ -static GLboolean -__glXDRIdrawableSwapBuffers(ClientPtr client, __GLXdrawable *drawable) -{ - __GLXDRIdrawable *priv = (__GLXDRIdrawable *) drawable; - __GLXDRIscreen *screen = priv->screen; - CARD64 unused; - - if (screen->flush) - (*screen->flush->flushInvalidate)(priv->driDrawable); - - if (DRI2SwapBuffers(client, drawable->pDraw, 0, 0, 0, &unused, - __glXdriSwapEvent, drawable->pDraw) != Success) - return FALSE; - - return TRUE; -} - -static int -__glXDRIdrawableSwapInterval(__GLXdrawable *drawable, int interval) -{ - if (interval <= 0) /* || interval > BIGNUM? */ - return GLX_BAD_VALUE; - - DRI2SwapInterval(drawable->pDraw, interval); - - return 0; -} - -static void -__glXDRIcontextDestroy(__GLXcontext *baseContext) -{ - __GLXDRIcontext *context = (__GLXDRIcontext *) baseContext; - __GLXDRIscreen *screen = (__GLXDRIscreen *) context->base.pGlxScreen; - - (*screen->core->destroyContext)(context->driContext); - __glXContextDestroy(&context->base); - xfree(context); -} - -static int -__glXDRIcontextMakeCurrent(__GLXcontext *baseContext) -{ - __GLXDRIcontext *context = (__GLXDRIcontext *) baseContext; - __GLXDRIdrawable *draw = (__GLXDRIdrawable *) baseContext->drawPriv; - __GLXDRIdrawable *read = (__GLXDRIdrawable *) baseContext->readPriv; - __GLXDRIscreen *screen = (__GLXDRIscreen *) context->base.pGlxScreen; - - return (*screen->core->bindContext)(context->driContext, - draw->driDrawable, - read->driDrawable); -} - -static int -__glXDRIcontextLoseCurrent(__GLXcontext *baseContext) -{ - __GLXDRIcontext *context = (__GLXDRIcontext *) baseContext; - __GLXDRIscreen *screen = (__GLXDRIscreen *) context->base.pGlxScreen; - - return (*screen->core->unbindContext)(context->driContext); -} - -static int -__glXDRIcontextCopy(__GLXcontext *baseDst, __GLXcontext *baseSrc, - unsigned long mask) -{ - __GLXDRIcontext *dst = (__GLXDRIcontext *) baseDst; - __GLXDRIcontext *src = (__GLXDRIcontext *) baseSrc; - __GLXDRIscreen *screen = (__GLXDRIscreen *) dst->base.pGlxScreen; - - return (*screen->core->copyContext)(dst->driContext, - src->driContext, mask); -} - -static int -__glXDRIcontextForceCurrent(__GLXcontext *baseContext) -{ - __GLXDRIcontext *context = (__GLXDRIcontext *) baseContext; - __GLXDRIdrawable *draw = (__GLXDRIdrawable *) baseContext->drawPriv; - __GLXDRIdrawable *read = (__GLXDRIdrawable *) baseContext->readPriv; - __GLXDRIscreen *screen = (__GLXDRIscreen *) context->base.pGlxScreen; - - return (*screen->core->bindContext)(context->driContext, - draw->driDrawable, - read->driDrawable); -} - -static Bool -__glXDRIcontextWait(__GLXcontext *baseContext, - __GLXclientState *cl, int *error) -{ - if (DRI2WaitSwap(cl->client, baseContext->drawPriv->pDraw)) { - *error = cl->client->noClientException; - return TRUE; - } - - return FALSE; -} - -#ifdef __DRI_TEX_BUFFER - -static int -__glXDRIbindTexImage(__GLXcontext *baseContext, - int buffer, - __GLXdrawable *glxPixmap) -{ - __GLXDRIdrawable *drawable = (__GLXDRIdrawable *) glxPixmap; - const __DRItexBufferExtension *texBuffer = drawable->screen->texBuffer; - __GLXDRIcontext *context = (__GLXDRIcontext *) baseContext; - - if (texBuffer == NULL) - return Success; - -#if __DRI_TEX_BUFFER_VERSION >= 2 - if (texBuffer->base.version >= 2 && texBuffer->setTexBuffer2 != NULL) { - (*texBuffer->setTexBuffer2)(context->driContext, - glxPixmap->target, - glxPixmap->format, - drawable->driDrawable); - } else -#endif - { - texBuffer->setTexBuffer(context->driContext, - glxPixmap->target, - drawable->driDrawable); - } - - return Success; -} - -static int -__glXDRIreleaseTexImage(__GLXcontext *baseContext, - int buffer, - __GLXdrawable *pixmap) -{ - /* FIXME: Just unbind the texture? */ - return Success; -} - -#else - -static int -__glXDRIbindTexImage(__GLXcontext *baseContext, - int buffer, - __GLXdrawable *glxPixmap) -{ - return Success; -} - -static int -__glXDRIreleaseTexImage(__GLXcontext *baseContext, - int buffer, - __GLXdrawable *pixmap) -{ - return Success; -} - -#endif - -static __GLXtextureFromPixmap __glXDRItextureFromPixmap = { - __glXDRIbindTexImage, - __glXDRIreleaseTexImage -}; - -static void -__glXDRIscreenDestroy(__GLXscreen *baseScreen) -{ - __GLXDRIscreen *screen = (__GLXDRIscreen *) baseScreen; - - (*screen->core->destroyScreen)(screen->driScreen); - - dlclose(screen->driver); - - __glXScreenDestroy(baseScreen); - - xfree(screen); -} - -static __GLXcontext * -__glXDRIscreenCreateContext(__GLXscreen *baseScreen, - __GLXconfig *glxConfig, - __GLXcontext *baseShareContext) -{ - __GLXDRIscreen *screen = (__GLXDRIscreen *) baseScreen; - __GLXDRIcontext *context, *shareContext; - __GLXDRIconfig *config = (__GLXDRIconfig *) glxConfig; - __DRIcontext *driShare; - - shareContext = (__GLXDRIcontext *) baseShareContext; - if (shareContext) - driShare = shareContext->driContext; - else - driShare = NULL; - - context = xcalloc(1, sizeof *context); - if (context == NULL) - return NULL; - - context->base.destroy = __glXDRIcontextDestroy; - context->base.makeCurrent = __glXDRIcontextMakeCurrent; - context->base.loseCurrent = __glXDRIcontextLoseCurrent; - context->base.copy = __glXDRIcontextCopy; - context->base.forceCurrent = __glXDRIcontextForceCurrent; - context->base.textureFromPixmap = &__glXDRItextureFromPixmap; - context->base.wait = __glXDRIcontextWait; - - context->driContext = - (*screen->dri2->createNewContext)(screen->driScreen, - config->driConfig, - driShare, context); - if (context->driContext == NULL) { - xfree(context); - return NULL; - } - - return &context->base; -} - -static __GLXdrawable * -__glXDRIscreenCreateDrawable(__GLXscreen *screen, - DrawablePtr pDraw, - int type, - XID drawId, - __GLXconfig *glxConfig) -{ - __GLXDRIscreen *driScreen = (__GLXDRIscreen *) screen; - __GLXDRIconfig *config = (__GLXDRIconfig *) glxConfig; - __GLXDRIdrawable *private; - - private = xcalloc(1, sizeof *private); - if (private == NULL) - return NULL; - - private->screen = driScreen; - if (!__glXDrawableInit(&private->base, screen, - pDraw, type, drawId, glxConfig)) { - xfree(private); - return NULL; - } - - private->base.destroy = __glXDRIdrawableDestroy; - private->base.swapBuffers = __glXDRIdrawableSwapBuffers; - private->base.copySubBuffer = __glXDRIdrawableCopySubBuffer; - private->base.waitGL = __glXDRIdrawableWaitGL; - private->base.waitX = __glXDRIdrawableWaitX; - - if (DRI2CreateDrawable(pDraw)) { - xfree(private); - return NULL; - } - - private->driDrawable = - (*driScreen->dri2->createNewDrawable)(driScreen->driScreen, - config->driConfig, private); - - return &private->base; -} - -static __DRIbuffer * -dri2GetBuffers(__DRIdrawable *driDrawable, - int *width, int *height, - unsigned int *attachments, int count, - int *out_count, void *loaderPrivate) -{ - __GLXDRIdrawable *private = loaderPrivate; - DRI2BufferPtr *buffers; - int i; - int j; - - buffers = DRI2GetBuffers(private->base.pDraw, - width, height, attachments, count, out_count); - if (*out_count > MAX_DRAWABLE_BUFFERS) { - *out_count = 0; - return NULL; - } - - private->width = *width; - private->height = *height; - - /* This assumes the DRI2 buffer attachment tokens matches the - * __DRIbuffer tokens. */ - j = 0; - for (i = 0; i < *out_count; i++) { - /* Do not send the real front buffer of a window to the client. - */ - if ((private->base.pDraw->type == DRAWABLE_WINDOW) - && (buffers[i]->attachment == DRI2BufferFrontLeft)) { - continue; - } - - private->buffers[j].attachment = buffers[i]->attachment; - private->buffers[j].name = buffers[i]->name; - private->buffers[j].pitch = buffers[i]->pitch; - private->buffers[j].cpp = buffers[i]->cpp; - private->buffers[j].flags = buffers[i]->flags; - j++; - } - - *out_count = j; - return private->buffers; -} - -static __DRIbuffer * -dri2GetBuffersWithFormat(__DRIdrawable *driDrawable, - int *width, int *height, - unsigned int *attachments, int count, - int *out_count, void *loaderPrivate) -{ - __GLXDRIdrawable *private = loaderPrivate; - DRI2BufferPtr *buffers; - int i; - int j = 0; - - buffers = DRI2GetBuffersWithFormat(private->base.pDraw, - width, height, attachments, count, - out_count); - if (*out_count > MAX_DRAWABLE_BUFFERS) { - *out_count = 0; - return NULL; - } - - private->width = *width; - private->height = *height; - - /* This assumes the DRI2 buffer attachment tokens matches the - * __DRIbuffer tokens. */ - for (i = 0; i < *out_count; i++) { - /* Do not send the real front buffer of a window to the client. - */ - if ((private->base.pDraw->type == DRAWABLE_WINDOW) - && (buffers[i]->attachment == DRI2BufferFrontLeft)) { - continue; - } - - private->buffers[j].attachment = buffers[i]->attachment; - private->buffers[j].name = buffers[i]->name; - private->buffers[j].pitch = buffers[i]->pitch; - private->buffers[j].cpp = buffers[i]->cpp; - private->buffers[j].flags = buffers[i]->flags; - j++; - } - - *out_count = j; - return private->buffers; -} - -static void -dri2FlushFrontBuffer(__DRIdrawable *driDrawable, void *loaderPrivate) -{ - (void) driDrawable; - __glXDRIdrawableWaitGL((__GLXdrawable *) loaderPrivate); -} - -static const __DRIdri2LoaderExtension loaderExtension = { - { __DRI_DRI2_LOADER, __DRI_DRI2_LOADER_VERSION }, - dri2GetBuffers, - dri2FlushFrontBuffer, - dri2GetBuffersWithFormat, -}; - -static const __DRIextension *loader_extensions[] = { - &systemTimeExtension.base, - &loaderExtension.base, - NULL -}; - -static const char dri_driver_path[] = DRI_DRIVER_PATH; - -static Bool -glxDRIEnterVT (int index, int flags) -{ - __GLXDRIscreen *screen = (__GLXDRIscreen *) - glxGetScreen(screenInfo.screens[index]); - - LogMessage(X_INFO, "AIGLX: Resuming AIGLX clients after VT switch\n"); - - if (!(*screen->enterVT) (index, flags)) - return FALSE; - - glxResumeClients(); - - return TRUE; -} - -static void -glxDRILeaveVT (int index, int flags) -{ - __GLXDRIscreen *screen = (__GLXDRIscreen *) - glxGetScreen(screenInfo.screens[index]); - - LogMessage(X_INFO, "AIGLX: Suspending AIGLX clients for VT switch\n"); - - glxSuspendClients(); - - return (*screen->leaveVT) (index, flags); -} - -static void -initializeExtensions(__GLXDRIscreen *screen) -{ - const __DRIextension **extensions; - int i; - - extensions = screen->core->getExtensions(screen->driScreen); - - __glXEnableExtension(screen->glx_enable_bits, - "GLX_MESA_copy_sub_buffer"); - LogMessage(X_INFO, "AIGLX: enabled GLX_MESA_copy_sub_buffer\n"); - - /* FIXME: only if DDX supports it */ - __glXEnableExtension(screen->glx_enable_bits, "GLX_INTEL_swap_event"); - LogMessage(X_INFO, "AIGLX: enabled GLX_INTEL_swap_event\n"); - - for (i = 0; extensions[i]; i++) { -#ifdef __DRI_READ_DRAWABLE - if (strcmp(extensions[i]->name, __DRI_READ_DRAWABLE) == 0) { - __glXEnableExtension(screen->glx_enable_bits, - "GLX_SGI_make_current_read"); - - LogMessage(X_INFO, "AIGLX: enabled GLX_SGI_make_current_read\n"); - } -#endif - -#ifdef __DRI_SWAP_CONTROL - if (strcmp(extensions[i]->name, __DRI_SWAP_CONTROL) == 0) { - screen->swapControl = - (const __DRIswapControlExtension *) extensions[i]; - __glXEnableExtension(screen->glx_enable_bits, - "GLX_SGI_swap_control"); - __glXEnableExtension(screen->glx_enable_bits, - "GLX_MESA_swap_control"); - - LogMessage(X_INFO, "AIGLX: enabled GLX_SGI_swap_control and GLX_MESA_swap_control\n"); - } -#endif - -#ifdef __DRI_TEX_BUFFER - if (strcmp(extensions[i]->name, __DRI_TEX_BUFFER) == 0) { - screen->texBuffer = - (const __DRItexBufferExtension *) extensions[i]; - /* GLX_EXT_texture_from_pixmap is always enabled. */ - LogMessage(X_INFO, "AIGLX: GLX_EXT_texture_from_pixmap backed by buffer objects\n"); - } -#endif - -#ifdef __DRI2_FLUSH - if (strcmp(extensions[i]->name, __DRI2_FLUSH) == 0 && - extensions[i]->version >= __DRI2_FLUSH_VERSION) { - screen->flush = (__DRI2flushExtension *) extensions[i]; - } -#endif - - /* Ignore unknown extensions */ - } -} - -static __GLXscreen * -__glXDRIscreenProbe(ScreenPtr pScreen) -{ - const char *driverName, *deviceName; - __GLXDRIscreen *screen; - char filename[128]; - size_t buffer_size; - ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum]; - const __DRIextension **extensions; - const __DRIconfig **driConfigs; - int i; - - screen = xcalloc(1, sizeof *screen); - if (screen == NULL) - return NULL; - - if (!xf86LoaderCheckSymbol("DRI2Connect") || - !DRI2Connect(pScreen, DRI2DriverDRI, - &screen->fd, &driverName, &deviceName)) { - LogMessage(X_INFO, - "AIGLX: Screen %d is not DRI2 capable\n", pScreen->myNum); - return NULL; - } - - screen->base.destroy = __glXDRIscreenDestroy; - screen->base.createContext = __glXDRIscreenCreateContext; - screen->base.createDrawable = __glXDRIscreenCreateDrawable; - screen->base.swapInterval = __glXDRIdrawableSwapInterval; - screen->base.pScreen = pScreen; - - __glXInitExtensionEnableBits(screen->glx_enable_bits); - - snprintf(filename, sizeof filename, - "%s/%s_dri.so", dri_driver_path, driverName); - - screen->driver = dlopen(filename, RTLD_LAZY | RTLD_LOCAL); - if (screen->driver == NULL) { - LogMessage(X_ERROR, "AIGLX error: dlopen of %s failed (%s)\n", - filename, dlerror()); - goto handle_error; - } - - extensions = dlsym(screen->driver, __DRI_DRIVER_EXTENSIONS); - if (extensions == NULL) { - LogMessage(X_ERROR, "AIGLX error: %s exports no extensions (%s)\n", - driverName, dlerror()); - goto handle_error; - } - - for (i = 0; extensions[i]; i++) { - if (strcmp(extensions[i]->name, __DRI_CORE) == 0 && - extensions[i]->version >= __DRI_CORE_VERSION) { - screen->core = (const __DRIcoreExtension *) extensions[i]; - } - if (strcmp(extensions[i]->name, __DRI_DRI2) == 0 && - extensions[i]->version >= __DRI_DRI2_VERSION) { - screen->dri2 = (const __DRIdri2Extension *) extensions[i]; - } - } - - if (screen->core == NULL || screen->dri2 == NULL) { - LogMessage(X_ERROR, "AIGLX error: %s exports no DRI extension\n", - driverName); - goto handle_error; - } - - screen->driScreen = - (*screen->dri2->createNewScreen)(pScreen->myNum, - screen->fd, - loader_extensions, - &driConfigs, - screen); - - if (screen->driScreen == NULL) { - LogMessage(X_ERROR, - "AIGLX error: Calling driver entry point failed\n"); - goto handle_error; - } - - initializeExtensions(screen); - - screen->base.fbconfigs = glxConvertConfigs(screen->core, driConfigs); - - __glXScreenInit(&screen->base, pScreen); - - /* The first call simply determines the length of the extension string. - * This allows us to allocate some memory to hold the extension string, - * but it requires that we call __glXGetExtensionString a second time. - */ - buffer_size = __glXGetExtensionString(screen->glx_enable_bits, NULL); - if (buffer_size > 0) { - if (screen->base.GLXextensions != NULL) { - xfree(screen->base.GLXextensions); - } - - screen->base.GLXextensions = xnfalloc(buffer_size); - (void) __glXGetExtensionString(screen->glx_enable_bits, - screen->base.GLXextensions); - } - - /* We're going to assume (perhaps incorrectly?) that all DRI2-enabled - * drivers support the required extensions for GLX 1.4. The extensions - * we're assuming are: - * - * - GLX_SGI_make_current_read (1.3) - * - GLX_SGIX_fbconfig (1.3) - * - GLX_SGIX_pbuffer (1.3) - * - GLX_ARB_multisample (1.4) - */ - screen->base.GLXmajor = 1; - screen->base.GLXminor = 4; - - screen->enterVT = pScrn->EnterVT; - pScrn->EnterVT = glxDRIEnterVT; - screen->leaveVT = pScrn->LeaveVT; - pScrn->LeaveVT = glxDRILeaveVT; - - LogMessage(X_INFO, - "AIGLX: Loaded and initialized %s\n", filename); - - return &screen->base; - - handle_error: - if (screen->driver) - dlclose(screen->driver); - - xfree(screen); - - LogMessage(X_ERROR, "AIGLX: reverting to software rendering\n"); - - return NULL; -} - -_X_EXPORT __GLXprovider __glXDRI2Provider = { - __glXDRIscreenProbe, - "DRI2", - NULL -}; +/* + * Copyright © 2007 Red Hat, Inc + * + * Permission to use, copy, modify, distribute, and sell this software + * and its documentation for any purpose is hereby granted without + * fee, provided that the above copyright notice appear in all copies + * and that both that copyright notice and this permission notice + * appear in supporting documentation, and that the name of Red Hat, + * Inc not be used in advertising or publicity pertaining to + * distribution of the software without specific, written prior + * permission. Red Hat, Inc makes no representations about the + * suitability of this software for any purpose. It is provided "as + * is" without express or implied warranty. + * + * RED HAT, INC DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, + * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN + * NO EVENT SHALL RED HAT, INC BE LIABLE FOR ANY SPECIAL, INDIRECT OR + * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS + * OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, + * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN + * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#ifdef HAVE_DIX_CONFIG_H +#include +#endif + +#include +#include +#include +#include +#include + +#include +#include +#include +#include + +#include +#include + +#define _XF86DRI_SERVER_ +#include +#include +#include + +#include "glxserver.h" +#include "glxutil.h" +#include "glxdricommon.h" + +#include "g_disptab.h" +#include "glapitable.h" +#include "glapi.h" +#include "glthread.h" +#include "dispatch.h" +#include "extension_string.h" + +typedef struct __GLXDRIscreen __GLXDRIscreen; +typedef struct __GLXDRIcontext __GLXDRIcontext; +typedef struct __GLXDRIdrawable __GLXDRIdrawable; + +struct __GLXDRIscreen { + __GLXscreen base; + __DRIscreen *driScreen; + void *driver; + int fd; + + xf86EnterVTProc *enterVT; + xf86LeaveVTProc *leaveVT; + + const __DRIcoreExtension *core; + const __DRIdri2Extension *dri2; + const __DRI2flushExtension *flush; + const __DRIcopySubBufferExtension *copySubBuffer; + const __DRIswapControlExtension *swapControl; + const __DRItexBufferExtension *texBuffer; + + unsigned char glx_enable_bits[__GLX_EXT_BYTES]; +}; + +struct __GLXDRIcontext { + __GLXcontext base; + __DRIcontext *driContext; +}; + +#define MAX_DRAWABLE_BUFFERS 5 + +struct __GLXDRIdrawable { + __GLXdrawable base; + __DRIdrawable *driDrawable; + __GLXDRIscreen *screen; + + /* Dimensions as last reported by DRI2GetBuffers. */ + int width; + int height; + __DRIbuffer buffers[MAX_DRAWABLE_BUFFERS]; + int count; +}; + +static void +__glXDRIdrawableDestroy(__GLXdrawable *drawable) +{ + __GLXDRIdrawable *private = (__GLXDRIdrawable *) drawable; + const __DRIcoreExtension *core = private->screen->core; + + (*core->destroyDrawable)(private->driDrawable); + + /* If the X window was destroyed, the dri DestroyWindow hook will + * aready have taken care of this, so only call if pDraw isn't NULL. */ + if (drawable->pDraw != NULL) + DRI2DestroyDrawable(drawable->pDraw); + + __glXDrawableRelease(drawable); + + xfree(private); +} + +static void +__glXDRIdrawableCopySubBuffer(__GLXdrawable *drawable, + int x, int y, int w, int h) +{ + __GLXDRIdrawable *private = (__GLXDRIdrawable *) drawable; + BoxRec box; + RegionRec region; + + box.x1 = x; + box.y1 = private->height - y - h; + box.x2 = x + w; + box.y2 = private->height - y; + REGION_INIT(drawable->pDraw->pScreen, ®ion, &box, 0); + + DRI2CopyRegion(drawable->pDraw, ®ion, + DRI2BufferFrontLeft, DRI2BufferBackLeft); +} + +static void +__glXDRIdrawableWaitX(__GLXdrawable *drawable) +{ + __GLXDRIdrawable *private = (__GLXDRIdrawable *) drawable; + BoxRec box; + RegionRec region; + + box.x1 = 0; + box.y1 = 0; + box.x2 = private->width; + box.y2 = private->height; + REGION_INIT(drawable->pDraw->pScreen, ®ion, &box, 0); + + DRI2CopyRegion(drawable->pDraw, ®ion, + DRI2BufferFakeFrontLeft, DRI2BufferFrontLeft); +} + +static void +__glXDRIdrawableWaitGL(__GLXdrawable *drawable) +{ + __GLXDRIdrawable *private = (__GLXDRIdrawable *) drawable; + BoxRec box; + RegionRec region; + + box.x1 = 0; + box.y1 = 0; + box.x2 = private->width; + box.y2 = private->height; + REGION_INIT(drawable->pDraw->pScreen, ®ion, &box, 0); + + DRI2CopyRegion(drawable->pDraw, ®ion, + DRI2BufferFrontLeft, DRI2BufferFakeFrontLeft); +} + +static void +__glXdriSwapEvent(ClientPtr client, void *data, int type, CARD64 ust, + CARD64 msc, CARD64 sbc) +{ + __GLXdrawable *drawable = data; + xGLXBufferSwapComplete wire; + + if (!(drawable->eventMask & GLX_BUFFER_SWAP_COMPLETE_INTEL_MASK)) + return; + + wire.type = __glXEventBase + GLX_BufferSwapComplete; + switch (type) { + case DRI2_EXCHANGE_COMPLETE: + wire.event_type = GLX_EXCHANGE_COMPLETE_INTEL; + break; + case DRI2_BLIT_COMPLETE: + wire.event_type = GLX_BLIT_COMPLETE_INTEL; + break; + case DRI2_FLIP_COMPLETE: + wire.event_type = GLX_FLIP_COMPLETE_INTEL; + break; + default: + /* unknown swap completion type */ + break; + } + wire.sequenceNumber = client->sequence; + wire.drawable = drawable->drawId; + wire.ust_hi = ust >> 32; + wire.ust_lo = ust & 0xffffffff; + wire.msc_hi = msc >> 32; + wire.msc_lo = msc & 0xffffffff; + wire.sbc_hi = sbc >> 32; + wire.sbc_lo = sbc & 0xffffffff; + + WriteEventsToClient(client, 1, (xEvent *) &wire); +} + +/* + * Copy or flip back to front, honoring the swap interval if possible. + * + * If the kernel supports it, we request an event for the frame when the + * swap should happen, then perform the copy when we receive it. + */ +static GLboolean +__glXDRIdrawableSwapBuffers(ClientPtr client, __GLXdrawable *drawable) +{ + __GLXDRIdrawable *priv = (__GLXDRIdrawable *) drawable; + __GLXDRIscreen *screen = priv->screen; + CARD64 unused; + +#if __DRI2_FLUSH_VERSION >= 3 + if (screen->flush) { + (*screen->flush->flush)(priv->driDrawable); + (*screen->flush->invalidate)(priv->driDrawable); + } +#else + if (screen->flush) + (*screen->flush->flushInvalidate)(priv->driDrawable); +#endif + + if (DRI2SwapBuffers(client, drawable->pDraw, 0, 0, 0, &unused, + __glXdriSwapEvent, drawable->pDraw) != Success) + return FALSE; + + return TRUE; +} + +static int +__glXDRIdrawableSwapInterval(__GLXdrawable *drawable, int interval) +{ + if (interval <= 0) /* || interval > BIGNUM? */ + return GLX_BAD_VALUE; + + DRI2SwapInterval(drawable->pDraw, interval); + + return 0; +} + +static void +__glXDRIcontextDestroy(__GLXcontext *baseContext) +{ + __GLXDRIcontext *context = (__GLXDRIcontext *) baseContext; + __GLXDRIscreen *screen = (__GLXDRIscreen *) context->base.pGlxScreen; + + (*screen->core->destroyContext)(context->driContext); + __glXContextDestroy(&context->base); + xfree(context); +} + +static int +__glXDRIcontextMakeCurrent(__GLXcontext *baseContext) +{ + __GLXDRIcontext *context = (__GLXDRIcontext *) baseContext; + __GLXDRIdrawable *draw = (__GLXDRIdrawable *) baseContext->drawPriv; + __GLXDRIdrawable *read = (__GLXDRIdrawable *) baseContext->readPriv; + __GLXDRIscreen *screen = (__GLXDRIscreen *) context->base.pGlxScreen; + + return (*screen->core->bindContext)(context->driContext, + draw->driDrawable, + read->driDrawable); +} + +static int +__glXDRIcontextLoseCurrent(__GLXcontext *baseContext) +{ + __GLXDRIcontext *context = (__GLXDRIcontext *) baseContext; + __GLXDRIscreen *screen = (__GLXDRIscreen *) context->base.pGlxScreen; + + return (*screen->core->unbindContext)(context->driContext); +} + +static int +__glXDRIcontextCopy(__GLXcontext *baseDst, __GLXcontext *baseSrc, + unsigned long mask) +{ + __GLXDRIcontext *dst = (__GLXDRIcontext *) baseDst; + __GLXDRIcontext *src = (__GLXDRIcontext *) baseSrc; + __GLXDRIscreen *screen = (__GLXDRIscreen *) dst->base.pGlxScreen; + + return (*screen->core->copyContext)(dst->driContext, + src->driContext, mask); +} + +static int +__glXDRIcontextForceCurrent(__GLXcontext *baseContext) +{ + __GLXDRIcontext *context = (__GLXDRIcontext *) baseContext; + __GLXDRIdrawable *draw = (__GLXDRIdrawable *) baseContext->drawPriv; + __GLXDRIdrawable *read = (__GLXDRIdrawable *) baseContext->readPriv; + __GLXDRIscreen *screen = (__GLXDRIscreen *) context->base.pGlxScreen; + + return (*screen->core->bindContext)(context->driContext, + draw->driDrawable, + read->driDrawable); +} + +static Bool +__glXDRIcontextWait(__GLXcontext *baseContext, + __GLXclientState *cl, int *error) +{ + if (DRI2WaitSwap(cl->client, baseContext->drawPriv->pDraw)) { + *error = cl->client->noClientException; + return TRUE; + } + + return FALSE; +} + +#ifdef __DRI_TEX_BUFFER + +static int +__glXDRIbindTexImage(__GLXcontext *baseContext, + int buffer, + __GLXdrawable *glxPixmap) +{ + __GLXDRIdrawable *drawable = (__GLXDRIdrawable *) glxPixmap; + const __DRItexBufferExtension *texBuffer = drawable->screen->texBuffer; + __GLXDRIcontext *context = (__GLXDRIcontext *) baseContext; + + if (texBuffer == NULL) + return Success; + +#if __DRI_TEX_BUFFER_VERSION >= 2 + if (texBuffer->base.version >= 2 && texBuffer->setTexBuffer2 != NULL) { + (*texBuffer->setTexBuffer2)(context->driContext, + glxPixmap->target, + glxPixmap->format, + drawable->driDrawable); + } else +#endif + { + texBuffer->setTexBuffer(context->driContext, + glxPixmap->target, + drawable->driDrawable); + } + + return Success; +} + +static int +__glXDRIreleaseTexImage(__GLXcontext *baseContext, + int buffer, + __GLXdrawable *pixmap) +{ + /* FIXME: Just unbind the texture? */ + return Success; +} + +#else + +static int +__glXDRIbindTexImage(__GLXcontext *baseContext, + int buffer, + __GLXdrawable *glxPixmap) +{ + return Success; +} + +static int +__glXDRIreleaseTexImage(__GLXcontext *baseContext, + int buffer, + __GLXdrawable *pixmap) +{ + return Success; +} + +#endif + +static __GLXtextureFromPixmap __glXDRItextureFromPixmap = { + __glXDRIbindTexImage, + __glXDRIreleaseTexImage +}; + +static void +__glXDRIscreenDestroy(__GLXscreen *baseScreen) +{ + __GLXDRIscreen *screen = (__GLXDRIscreen *) baseScreen; + + (*screen->core->destroyScreen)(screen->driScreen); + + dlclose(screen->driver); + + __glXScreenDestroy(baseScreen); + + xfree(screen); +} + +static __GLXcontext * +__glXDRIscreenCreateContext(__GLXscreen *baseScreen, + __GLXconfig *glxConfig, + __GLXcontext *baseShareContext) +{ + __GLXDRIscreen *screen = (__GLXDRIscreen *) baseScreen; + __GLXDRIcontext *context, *shareContext; + __GLXDRIconfig *config = (__GLXDRIconfig *) glxConfig; + __DRIcontext *driShare; + + shareContext = (__GLXDRIcontext *) baseShareContext; + if (shareContext) + driShare = shareContext->driContext; + else + driShare = NULL; + + context = xcalloc(1, sizeof *context); + if (context == NULL) + return NULL; + + context->base.destroy = __glXDRIcontextDestroy; + context->base.makeCurrent = __glXDRIcontextMakeCurrent; + context->base.loseCurrent = __glXDRIcontextLoseCurrent; + context->base.copy = __glXDRIcontextCopy; + context->base.forceCurrent = __glXDRIcontextForceCurrent; + context->base.textureFromPixmap = &__glXDRItextureFromPixmap; + context->base.wait = __glXDRIcontextWait; + + context->driContext = + (*screen->dri2->createNewContext)(screen->driScreen, + config->driConfig, + driShare, context); + if (context->driContext == NULL) { + xfree(context); + return NULL; + } + + return &context->base; +} + +static __GLXdrawable * +__glXDRIscreenCreateDrawable(__GLXscreen *screen, + DrawablePtr pDraw, + int type, + XID drawId, + __GLXconfig *glxConfig) +{ + __GLXDRIscreen *driScreen = (__GLXDRIscreen *) screen; + __GLXDRIconfig *config = (__GLXDRIconfig *) glxConfig; + __GLXDRIdrawable *private; + + private = xcalloc(1, sizeof *private); + if (private == NULL) + return NULL; + + private->screen = driScreen; + if (!__glXDrawableInit(&private->base, screen, + pDraw, type, drawId, glxConfig)) { + xfree(private); + return NULL; + } + + private->base.destroy = __glXDRIdrawableDestroy; + private->base.swapBuffers = __glXDRIdrawableSwapBuffers; + private->base.copySubBuffer = __glXDRIdrawableCopySubBuffer; + private->base.waitGL = __glXDRIdrawableWaitGL; + private->base.waitX = __glXDRIdrawableWaitX; + + if (DRI2CreateDrawable(pDraw)) { + xfree(private); + return NULL; + } + + private->driDrawable = + (*driScreen->dri2->createNewDrawable)(driScreen->driScreen, + config->driConfig, private); + + return &private->base; +} + +static __DRIbuffer * +dri2GetBuffers(__DRIdrawable *driDrawable, + int *width, int *height, + unsigned int *attachments, int count, + int *out_count, void *loaderPrivate) +{ + __GLXDRIdrawable *private = loaderPrivate; + DRI2BufferPtr *buffers; + int i; + int j; + + buffers = DRI2GetBuffers(private->base.pDraw, + width, height, attachments, count, out_count); + if (*out_count > MAX_DRAWABLE_BUFFERS) { + *out_count = 0; + return NULL; + } + + private->width = *width; + private->height = *height; + + /* This assumes the DRI2 buffer attachment tokens matches the + * __DRIbuffer tokens. */ + j = 0; + for (i = 0; i < *out_count; i++) { + /* Do not send the real front buffer of a window to the client. + */ + if ((private->base.pDraw->type == DRAWABLE_WINDOW) + && (buffers[i]->attachment == DRI2BufferFrontLeft)) { + continue; + } + + private->buffers[j].attachment = buffers[i]->attachment; + private->buffers[j].name = buffers[i]->name; + private->buffers[j].pitch = buffers[i]->pitch; + private->buffers[j].cpp = buffers[i]->cpp; + private->buffers[j].flags = buffers[i]->flags; + j++; + } + + *out_count = j; + return private->buffers; +} + +static __DRIbuffer * +dri2GetBuffersWithFormat(__DRIdrawable *driDrawable, + int *width, int *height, + unsigned int *attachments, int count, + int *out_count, void *loaderPrivate) +{ + __GLXDRIdrawable *private = loaderPrivate; + DRI2BufferPtr *buffers; + int i; + int j = 0; + + buffers = DRI2GetBuffersWithFormat(private->base.pDraw, + width, height, attachments, count, + out_count); + if (*out_count > MAX_DRAWABLE_BUFFERS) { + *out_count = 0; + return NULL; + } + + private->width = *width; + private->height = *height; + + /* This assumes the DRI2 buffer attachment tokens matches the + * __DRIbuffer tokens. */ + for (i = 0; i < *out_count; i++) { + /* Do not send the real front buffer of a window to the client. + */ + if ((private->base.pDraw->type == DRAWABLE_WINDOW) + && (buffers[i]->attachment == DRI2BufferFrontLeft)) { + continue; + } + + private->buffers[j].attachment = buffers[i]->attachment; + private->buffers[j].name = buffers[i]->name; + private->buffers[j].pitch = buffers[i]->pitch; + private->buffers[j].cpp = buffers[i]->cpp; + private->buffers[j].flags = buffers[i]->flags; + j++; + } + + *out_count = j; + return private->buffers; +} + +static void +dri2FlushFrontBuffer(__DRIdrawable *driDrawable, void *loaderPrivate) +{ + (void) driDrawable; + __glXDRIdrawableWaitGL((__GLXdrawable *) loaderPrivate); +} + +static const __DRIdri2LoaderExtension loaderExtension = { + { __DRI_DRI2_LOADER, __DRI_DRI2_LOADER_VERSION }, + dri2GetBuffers, + dri2FlushFrontBuffer, + dri2GetBuffersWithFormat, +}; + +static const __DRIextension *loader_extensions[] = { + &systemTimeExtension.base, + &loaderExtension.base, + NULL +}; + +static const char dri_driver_path[] = DRI_DRIVER_PATH; + +static Bool +glxDRIEnterVT (int index, int flags) +{ + __GLXDRIscreen *screen = (__GLXDRIscreen *) + glxGetScreen(screenInfo.screens[index]); + + LogMessage(X_INFO, "AIGLX: Resuming AIGLX clients after VT switch\n"); + + if (!(*screen->enterVT) (index, flags)) + return FALSE; + + glxResumeClients(); + + return TRUE; +} + +static void +glxDRILeaveVT (int index, int flags) +{ + __GLXDRIscreen *screen = (__GLXDRIscreen *) + glxGetScreen(screenInfo.screens[index]); + + LogMessage(X_INFO, "AIGLX: Suspending AIGLX clients for VT switch\n"); + + glxSuspendClients(); + + return (*screen->leaveVT) (index, flags); +} + +static void +initializeExtensions(__GLXDRIscreen *screen) +{ + const __DRIextension **extensions; + int i; + + extensions = screen->core->getExtensions(screen->driScreen); + + __glXEnableExtension(screen->glx_enable_bits, + "GLX_MESA_copy_sub_buffer"); + LogMessage(X_INFO, "AIGLX: enabled GLX_MESA_copy_sub_buffer\n"); + + /* FIXME: only if DDX supports it */ + __glXEnableExtension(screen->glx_enable_bits, "GLX_INTEL_swap_event"); + LogMessage(X_INFO, "AIGLX: enabled GLX_INTEL_swap_event\n"); + + for (i = 0; extensions[i]; i++) { +#ifdef __DRI_READ_DRAWABLE + if (strcmp(extensions[i]->name, __DRI_READ_DRAWABLE) == 0) { + __glXEnableExtension(screen->glx_enable_bits, + "GLX_SGI_make_current_read"); + + LogMessage(X_INFO, "AIGLX: enabled GLX_SGI_make_current_read\n"); + } +#endif + +#ifdef __DRI_SWAP_CONTROL + if (strcmp(extensions[i]->name, __DRI_SWAP_CONTROL) == 0) { + screen->swapControl = + (const __DRIswapControlExtension *) extensions[i]; + __glXEnableExtension(screen->glx_enable_bits, + "GLX_SGI_swap_control"); + __glXEnableExtension(screen->glx_enable_bits, + "GLX_MESA_swap_control"); + + LogMessage(X_INFO, "AIGLX: enabled GLX_SGI_swap_control and GLX_MESA_swap_control\n"); + } +#endif + +#ifdef __DRI_TEX_BUFFER + if (strcmp(extensions[i]->name, __DRI_TEX_BUFFER) == 0) { + screen->texBuffer = + (const __DRItexBufferExtension *) extensions[i]; + /* GLX_EXT_texture_from_pixmap is always enabled. */ + LogMessage(X_INFO, "AIGLX: GLX_EXT_texture_from_pixmap backed by buffer objects\n"); + } +#endif + +#ifdef __DRI2_FLUSH + if (strcmp(extensions[i]->name, __DRI2_FLUSH) == 0 && + extensions[i]->version >= __DRI2_FLUSH_VERSION) { + screen->flush = (__DRI2flushExtension *) extensions[i]; + } +#endif + + /* Ignore unknown extensions */ + } +} + +static __GLXscreen * +__glXDRIscreenProbe(ScreenPtr pScreen) +{ + const char *driverName, *deviceName; + __GLXDRIscreen *screen; + char filename[128]; + size_t buffer_size; + ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum]; + const __DRIextension **extensions; + const __DRIconfig **driConfigs; + int i; + + screen = xcalloc(1, sizeof *screen); + if (screen == NULL) + return NULL; + + if (!xf86LoaderCheckSymbol("DRI2Connect") || + !DRI2Connect(pScreen, DRI2DriverDRI, + &screen->fd, &driverName, &deviceName)) { + LogMessage(X_INFO, + "AIGLX: Screen %d is not DRI2 capable\n", pScreen->myNum); + return NULL; + } + + screen->base.destroy = __glXDRIscreenDestroy; + screen->base.createContext = __glXDRIscreenCreateContext; + screen->base.createDrawable = __glXDRIscreenCreateDrawable; + screen->base.swapInterval = __glXDRIdrawableSwapInterval; + screen->base.pScreen = pScreen; + + __glXInitExtensionEnableBits(screen->glx_enable_bits); + + snprintf(filename, sizeof filename, + "%s/%s_dri.so", dri_driver_path, driverName); + + screen->driver = dlopen(filename, RTLD_LAZY | RTLD_LOCAL); + if (screen->driver == NULL) { + LogMessage(X_ERROR, "AIGLX error: dlopen of %s failed (%s)\n", + filename, dlerror()); + goto handle_error; + } + + extensions = dlsym(screen->driver, __DRI_DRIVER_EXTENSIONS); + if (extensions == NULL) { + LogMessage(X_ERROR, "AIGLX error: %s exports no extensions (%s)\n", + driverName, dlerror()); + goto handle_error; + } + + for (i = 0; extensions[i]; i++) { + if (strcmp(extensions[i]->name, __DRI_CORE) == 0 && + extensions[i]->version >= __DRI_CORE_VERSION) { + screen->core = (const __DRIcoreExtension *) extensions[i]; + } + if (strcmp(extensions[i]->name, __DRI_DRI2) == 0 && + extensions[i]->version >= __DRI_DRI2_VERSION) { + screen->dri2 = (const __DRIdri2Extension *) extensions[i]; + } + } + + if (screen->core == NULL || screen->dri2 == NULL) { + LogMessage(X_ERROR, "AIGLX error: %s exports no DRI extension\n", + driverName); + goto handle_error; + } + + screen->driScreen = + (*screen->dri2->createNewScreen)(pScreen->myNum, + screen->fd, + loader_extensions, + &driConfigs, + screen); + + if (screen->driScreen == NULL) { + LogMessage(X_ERROR, + "AIGLX error: Calling driver entry point failed\n"); + goto handle_error; + } + + initializeExtensions(screen); + + screen->base.fbconfigs = glxConvertConfigs(screen->core, driConfigs); + + __glXScreenInit(&screen->base, pScreen); + + /* The first call simply determines the length of the extension string. + * This allows us to allocate some memory to hold the extension string, + * but it requires that we call __glXGetExtensionString a second time. + */ + buffer_size = __glXGetExtensionString(screen->glx_enable_bits, NULL); + if (buffer_size > 0) { + if (screen->base.GLXextensions != NULL) { + xfree(screen->base.GLXextensions); + } + + screen->base.GLXextensions = xnfalloc(buffer_size); + (void) __glXGetExtensionString(screen->glx_enable_bits, + screen->base.GLXextensions); + } + + /* We're going to assume (perhaps incorrectly?) that all DRI2-enabled + * drivers support the required extensions for GLX 1.4. The extensions + * we're assuming are: + * + * - GLX_SGI_make_current_read (1.3) + * - GLX_SGIX_fbconfig (1.3) + * - GLX_SGIX_pbuffer (1.3) + * - GLX_ARB_multisample (1.4) + */ + screen->base.GLXmajor = 1; + screen->base.GLXminor = 4; + + screen->enterVT = pScrn->EnterVT; + pScrn->EnterVT = glxDRIEnterVT; + screen->leaveVT = pScrn->LeaveVT; + pScrn->LeaveVT = glxDRILeaveVT; + + LogMessage(X_INFO, + "AIGLX: Loaded and initialized %s\n", filename); + + return &screen->base; + + handle_error: + if (screen->driver) + dlclose(screen->driver); + + xfree(screen); + + LogMessage(X_ERROR, "AIGLX: reverting to software rendering\n"); + + return NULL; +} + +_X_EXPORT __GLXprovider __glXDRI2Provider = { + __glXDRIscreenProbe, + "DRI2", + NULL +}; -- cgit v1.2.3