/* * Copyright 2008 George Sapountzis * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice (including the next * paragraph) shall be included in all copies or substantial portions of the * Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL) #include #include "glxclient.h" #include #include "dri_common.h" struct drisw_display { __GLXDRIdisplay base; }; struct drisw_context { struct glx_context base; __DRIcontext *driContext; }; struct drisw_screen { struct glx_screen base; __DRIscreen *driScreen; __GLXDRIscreen vtable; const __DRIcoreExtension *core; const __DRIswrastExtension *swrast; const __DRIconfig **driver_configs; void *driver; }; struct drisw_drawable { __GLXDRIdrawable base; GC gc; GC swapgc; __DRIdrawable *driDrawable; XVisualInfo *visinfo; XImage *ximage; }; static Bool XCreateDrawable(struct drisw_drawable * pdp, Display * dpy, XID drawable, int visualid) { XGCValues gcvalues; long visMask; XVisualInfo visTemp; int num_visuals; /* create GC's */ pdp->gc = XCreateGC(dpy, drawable, 0, NULL); pdp->swapgc = XCreateGC(dpy, drawable, 0, NULL); gcvalues.function = GXcopy; gcvalues.graphics_exposures = False; XChangeGC(dpy, pdp->gc, GCFunction, &gcvalues); XChangeGC(dpy, pdp->swapgc, GCFunction, &gcvalues); XChangeGC(dpy, pdp->swapgc, GCGraphicsExposures, &gcvalues); /* visual */ visTemp.screen = DefaultScreen(dpy); visTemp.visualid = visualid; visMask = (VisualScreenMask | VisualIDMask); pdp->visinfo = XGetVisualInfo(dpy, visMask, &visTemp, &num_visuals); /* create XImage */ pdp->ximage = XCreateImage(dpy, pdp->visinfo->visual, pdp->visinfo->depth, ZPixmap, 0, /* format, offset */ NULL, /* data */ 0, 0, /* width, height */ 32, /* bitmap_pad */ 0); /* bytes_per_line */ return True; } static void XDestroyDrawable(struct drisw_drawable * pdp, Display * dpy, XID drawable) { XDestroyImage(pdp->ximage); XFree(pdp->visinfo); XFreeGC(dpy, pdp->gc); XFreeGC(dpy, pdp->swapgc); } /** * swrast loader functions */ static void swrastGetDrawableInfo(__DRIdrawable * draw, int *x, int *y, int *w, int *h, void *loaderPrivate) { struct drisw_drawable *pdp = loaderPrivate; __GLXDRIdrawable *pdraw = &(pdp->base); Display *dpy = pdraw->psc->dpy; Drawable drawable; Window root; unsigned uw, uh, bw, depth; drawable = pdraw->xDrawable; XGetGeometry(dpy, drawable, &root, x, y, &uw, &uh, &bw, &depth); *w = uw; *h = uh; } /** * Align renderbuffer pitch. * * This should be chosen by the driver and the loader (libGL, xserver/glx) * should use the driver provided pitch. * * It seems that the xorg loader (that is the xserver loading swrast_dri for * indirect rendering, not client-side libGL) requires that the pitch is * exactly the image width padded to 32 bits. XXX * * The above restriction can probably be overcome by using ScratchPixmap and * CopyArea in the xserver, similar to ShmPutImage, and setting the width of * the scratch pixmap to 'pitch / cpp'. */ static inline int bytes_per_line(unsigned pitch_bits, unsigned mul) { unsigned mask = mul - 1; return ((pitch_bits + mask) & ~mask) / 8; } static void swrastPutImage(__DRIdrawable * draw, int op, int x, int y, int w, int h, char *data, void *loaderPrivate) { struct drisw_drawable *pdp = loaderPrivate; __GLXDRIdrawable *pdraw = &(pdp->base); Display *dpy = pdraw->psc->dpy; Drawable drawable; XImage *ximage; GC gc; switch (op) { case __DRI_SWRAST_IMAGE_OP_DRAW: gc = pdp->gc; break; case __DRI_SWRAST_IMAGE_OP_SWAP: gc = pdp->swapgc; break; default: return; } drawable = pdraw->xDrawable; ximage = pdp->ximage; ximage->data = data; ximage->width = w; ximage->height = h; ximage->bytes_per_line = bytes_per_line(w * ximage->bits_per_pixel, 32); XPutImage(dpy, drawable, gc, ximage, 0, 0, x, y, w, h); ximage->data = NULL; } static void swrastGetImage(__DRIdrawable * read, int x, int y, int w, int h, char *data, void *loaderPrivate) { struct drisw_drawable *prp = loaderPrivate; __GLXDRIdrawable *pread = &(prp->base); Display *dpy = pread->psc->dpy; Drawable readable; XImage *ximage; readable = pread->xDrawable; ximage = prp->ximage; ximage->data = data; ximage->width = w; ximage->height = h; ximage->bytes_per_line = bytes_per_line(w * ximage->bits_per_pixel, 32); XGetSubImage(dpy, readable, x, y, w, h, ~0L, ZPixmap, ximage, 0, 0); ximage->data = NULL; } static const __DRIswrastLoaderExtension swrastLoaderExtension = { {__DRI_SWRAST_LOADER, __DRI_SWRAST_LOADER_VERSION}, swrastGetDrawableInfo, swrastPutImage, swrastGetImage }; static const __DRIextension *loader_extensions[] = { &systemTimeExtension.base, &swrastLoaderExtension.base, NULL }; /** * GLXDRI functions */ static void drisw_destroy_context(struct glx_context *context) { struct drisw_context *pcp = (struct drisw_context *) context; struct drisw_screen *psc = (struct drisw_screen *) context->psc; if (context->xid) glx_send_destroy_context(psc->base.dpy, context->xid); if (context->extensions) XFree((char *) context->extensions); (*psc->core->destroyContext) (pcp->driContext); Xfree(pcp); } static int drisw_bind_context(struct glx_context *context, struct glx_context *old, GLXDrawable draw, GLXDrawable read) { struct drisw_context *pcp = (struct drisw_context *) context; struct drisw_screen *psc = (struct drisw_screen *) pcp->base.psc; struct drisw_drawable *pdraw, *pread; pdraw = (struct drisw_drawable *) driFetchDrawable(context, draw); pread = (struct drisw_drawable *) driFetchDrawable(context, read); if (pdraw == NULL || pread == NULL) return GLXBadDrawable; if ((*psc->core->bindContext) (pcp->driContext, pdraw->driDrawable, pread->driDrawable)) return Success; return GLXBadContext; } static void drisw_unbind_context(struct glx_context *context, struct glx_context *new) { struct drisw_context *pcp = (struct drisw_context *) context; struct drisw_screen *psc = (struct drisw_screen *) pcp->base.psc; (*psc->core->unbindContext) (pcp->driContext); driReleaseDrawables(&pcp->base); } static const struct glx_context_vtable drisw_context_vtable = { drisw_destroy_context, drisw_bind_context, drisw_unbind_context, NULL, NULL, DRI_glXUseXFont, NULL, NULL, }; static struct glx_context * drisw_create_context(struct glx_screen *base, struct glx_config *config_base, struct glx_context *shareList, int renderType) { struct drisw_context *pcp, *pcp_shared; __GLXDRIconfigPrivate *config = (__GLXDRIconfigPrivate *) config_base; struct drisw_screen *psc = (struct drisw_screen *) base; __DRIcontext *shared = NULL; if (!psc->base.driScreen) return NULL; if (shareList) { pcp_shared = (struct drisw_context *) shareList; shared = pcp_shared->driContext; } pcp = Xmalloc(sizeof *pcp); if (pcp == NULL) return NULL; memset(pcp, 0, sizeof *pcp); if (!glx_context_init(&pcp->base, &psc->base, &config->base)) { Xfree(pcp); return NULL; } pcp->driContext = (*psc->core->createNewContext) (psc->driScreen, config->driConfig, shared, pcp); if (pcp->driContext == NULL) { Xfree(pcp); return NULL; } pcp->base.vtable = &drisw_context_vtable; return &pcp->base; } static void driswDestroyDrawable(__GLXDRIdrawable * pdraw) { struct drisw_drawable *pdp = (struct drisw_drawable *) pdraw; struct drisw_screen *psc = (struct drisw_screen *) pdp->base.psc; (*psc->core->destroyDrawable) (pdp->driDrawable); XDestroyDrawable(pdp, pdraw->psc->dpy, pdraw->drawable); Xfree(pdp); } static __GLXDRIdrawable * driswCreateDrawable(struct glx_screen *base, XID xDrawable, GLXDrawable drawable, struct glx_config *modes) { struct drisw_drawable *pdp; __GLXDRIconfigPrivate *config = (__GLXDRIconfigPrivate *) modes; struct drisw_screen *psc = (struct drisw_screen *) base; const __DRIswrastExtension *swrast = psc->swrast; /* Old dri can't handle GLX 1.3+ drawable constructors. */ if (xDrawable != drawable) return NULL; pdp = Xmalloc(sizeof(*pdp)); if (!pdp) return NULL; memset(pdp, 0, sizeof *pdp); pdp->base.xDrawable = xDrawable; pdp->base.drawable = drawable; pdp->base.psc = &psc->base; XCreateDrawable(pdp, psc->base.dpy, xDrawable, modes->visualID); /* Create a new drawable */ pdp->driDrawable = (*swrast->createNewDrawable) (psc->driScreen, config->driConfig, pdp); if (!pdp->driDrawable) { XDestroyDrawable(pdp, psc->base.dpy, xDrawable); Xfree(pdp); return NULL; } pdp->base.destroyDrawable = driswDestroyDrawable; return &pdp->base; } static int64_t driswSwapBuffers(__GLXDRIdrawable * pdraw, int64_t target_msc, int64_t divisor, int64_t remainder) { struct drisw_drawable *pdp = (struct drisw_drawable *) pdraw; struct drisw_screen *psc = (struct drisw_screen *) pdp->base.psc; (void) target_msc; (void) divisor; (void) remainder; (*psc->core->swapBuffers) (pdp->driDrawable); return 0; } static void driswDestroyScreen(struct glx_screen *base) { struct drisw_screen *psc = (struct drisw_screen *) base; /* Free the direct rendering per screen data */ (*psc->core->destroyScreen) (psc->driScreen); driDestroyConfigs(psc->driver_configs); psc->driScreen = NULL; if (psc->driver) dlclose(psc->driver); } static void * driOpenSwrast(void) { void *driver = NULL; if (driver == NULL) driver = driOpenDriver("swrast"); if (driver == NULL) driver = driOpenDriver("swrastg"); return driver; } static const struct glx_screen_vtable drisw_screen_vtable = { drisw_create_context }; static struct glx_screen * driswCreateScreen(int screen, struct glx_display *priv) { __GLXDRIscreen *psp; const __DRIconfig **driver_configs; const __DRIextension **extensions; struct drisw_screen *psc; int i; psc = Xcalloc(1, sizeof *psc); if (psc == NULL) return NULL; memset(psc, 0, sizeof *psc); if (!glx_screen_init(&psc->base, screen, priv)) { Xfree(psc); return NULL; } psc->driver = driOpenSwrast(); if (psc->driver == NULL) goto handle_error; extensions = dlsym(psc->driver, __DRI_DRIVER_EXTENSIONS); if (extensions == NULL) { ErrorMessageF("driver exports no extensions (%s)\n", dlerror()); goto handle_error; } for (i = 0; extensions[i]; i++) { if (strcmp(extensions[i]->name, __DRI_CORE) == 0) psc->core = (__DRIcoreExtension *) extensions[i]; if (strcmp(extensions[i]->name, __DRI_SWRAST) == 0) psc->swrast = (__DRIswrastExtension *) extensions[i]; } if (psc->core == NULL || psc->swrast == NULL) { ErrorMessageF("core dri extension not found\n"); goto handle_error; } psc->driScreen = psc->swrast->createNewScreen(screen, loader_extensions, &driver_configs, psc); if (psc->driScreen == NULL) { ErrorMessageF("failed to create dri screen\n"); goto handle_error; } psc->base.configs = driConvertConfigs(psc->core, psc->base.configs, driver_configs); psc->base.visuals = driConvertConfigs(psc->core, psc->base.visuals, driver_configs); psc->driver_configs = driver_configs; psc->base.vtable = &drisw_screen_vtable; psp = &psc->vtable; psc->base.driScreen = psp; psp->destroyScreen = driswDestroyScreen; psp->createDrawable = driswCreateDrawable; psp->swapBuffers = driswSwapBuffers; return &psc->base; handle_error: if (psc->driver) dlclose(psc->driver); glx_screen_cleanup(&psc->base); Xfree(psc); ErrorMessageF("reverting to indirect rendering\n"); return NULL; } /* Called from __glXFreeDisplayPrivate. */ static void driswDestroyDisplay(__GLXDRIdisplay * dpy) { Xfree(dpy); } /* * Allocate, initialize and return a __DRIdisplayPrivate object. * This is called from __glXInitialize() when we are given a new * display pointer. */ _X_HIDDEN __GLXDRIdisplay * driswCreateDisplay(Display * dpy) { struct drisw_display *pdpyp; pdpyp = Xmalloc(sizeof *pdpyp); if (pdpyp == NULL) return NULL; pdpyp->base.destroyDisplay = driswDestroyDisplay; pdpyp->base.createScreen = driswCreateScreen; return &pdpyp->base; } #endif /* GLX_DIRECT_RENDERING */