| /* |
| * 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. |
| */ |
| |
| #ifdef GLX_DIRECT_RENDERING |
| |
| #include <X11/Xlib.h> |
| #include "glxclient.h" |
| #include <dlfcn.h> |
| #include "dri_common.h" |
| |
| typedef struct __GLXDRIdisplayPrivateRec __GLXDRIdisplayPrivate; |
| typedef struct __GLXDRIcontextPrivateRec __GLXDRIcontextPrivate; |
| typedef struct __GLXDRIdrawablePrivateRec __GLXDRIdrawablePrivate; |
| |
| struct __GLXDRIdisplayPrivateRec |
| { |
| __GLXDRIdisplay base; |
| }; |
| |
| struct __GLXDRIcontextPrivateRec |
| { |
| __GLXDRIcontext base; |
| __DRIcontext *driContext; |
| __GLXscreenConfigs *psc; |
| }; |
| |
| struct __GLXDRIdrawablePrivateRec |
| { |
| __GLXDRIdrawable base; |
| |
| GC gc; |
| GC swapgc; |
| |
| XVisualInfo *visinfo; |
| XImage *ximage; |
| }; |
| |
| static Bool |
| XCreateDrawable(__GLXDRIdrawablePrivate * 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(__GLXDRIdrawablePrivate * 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) |
| { |
| __GLXDRIdrawablePrivate *pdp = loaderPrivate; |
| __GLXDRIdrawable *pdraw = &(pdp->base); |
| Display *dpy = pdraw->psc->dpy; |
| Drawable drawable; |
| |
| Window root; |
| Status stat; |
| unsigned uw, uh, bw, depth; |
| |
| drawable = pdraw->xDrawable; |
| |
| stat = 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) |
| { |
| __GLXDRIdrawablePrivate *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) |
| { |
| __GLXDRIdrawablePrivate *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 |
| driDestroyContext(__GLXDRIcontext * context, |
| __GLXscreenConfigs * psc, Display * dpy) |
| { |
| __GLXDRIcontextPrivate *pcp = (__GLXDRIcontextPrivate *) context; |
| const __DRIcoreExtension *core = pcp->psc->core; |
| |
| (*core->destroyContext) (pcp->driContext); |
| |
| Xfree(pcp); |
| } |
| |
| static Bool |
| driBindContext(__GLXDRIcontext * context, |
| __GLXDRIdrawable * draw, __GLXDRIdrawable * read) |
| { |
| __GLXDRIcontextPrivate *pcp = (__GLXDRIcontextPrivate *) context; |
| const __DRIcoreExtension *core = pcp->psc->core; |
| |
| return (*core->bindContext) (pcp->driContext, |
| draw->driDrawable, read->driDrawable); |
| } |
| |
| static void |
| driUnbindContext(__GLXDRIcontext * context) |
| { |
| __GLXDRIcontextPrivate *pcp = (__GLXDRIcontextPrivate *) context; |
| const __DRIcoreExtension *core = pcp->psc->core; |
| |
| (*core->unbindContext) (pcp->driContext); |
| } |
| |
| static __GLXDRIcontext * |
| driCreateContext(__GLXscreenConfigs * psc, |
| const __GLcontextModes * mode, |
| GLXContext gc, GLXContext shareList, int renderType) |
| { |
| __GLXDRIcontextPrivate *pcp, *pcp_shared; |
| __GLXDRIconfigPrivate *config = (__GLXDRIconfigPrivate *) mode; |
| const __DRIcoreExtension *core; |
| __DRIcontext *shared = NULL; |
| |
| if (!psc || !psc->driScreen) |
| return NULL; |
| |
| core = psc->core; |
| |
| if (shareList) { |
| pcp_shared = (__GLXDRIcontextPrivate *) shareList->driContext; |
| shared = pcp_shared->driContext; |
| } |
| |
| pcp = Xmalloc(sizeof *pcp); |
| if (pcp == NULL) |
| return NULL; |
| |
| pcp->psc = psc; |
| pcp->driContext = |
| (*core->createNewContext) (psc->__driScreen, |
| config->driConfig, shared, pcp); |
| if (pcp->driContext == NULL) { |
| Xfree(pcp); |
| return NULL; |
| } |
| |
| pcp->base.destroyContext = driDestroyContext; |
| pcp->base.bindContext = driBindContext; |
| pcp->base.unbindContext = driUnbindContext; |
| |
| return &pcp->base; |
| } |
| |
| static void |
| driDestroyDrawable(__GLXDRIdrawable * pdraw) |
| { |
| __GLXDRIdrawablePrivate *pdp = (__GLXDRIdrawablePrivate *) pdraw; |
| const __DRIcoreExtension *core = pdraw->psc->core; |
| |
| (*core->destroyDrawable) (pdraw->driDrawable); |
| |
| XDestroyDrawable(pdp, pdraw->psc->dpy, pdraw->drawable); |
| Xfree(pdp); |
| } |
| |
| static __GLXDRIdrawable * |
| driCreateDrawable(__GLXscreenConfigs * psc, |
| XID xDrawable, |
| GLXDrawable drawable, const __GLcontextModes * modes) |
| { |
| __GLXDRIdrawable *pdraw; |
| __GLXDRIdrawablePrivate *pdp; |
| __GLXDRIconfigPrivate *config = (__GLXDRIconfigPrivate *) modes; |
| 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; |
| |
| pdraw = &(pdp->base); |
| pdraw->xDrawable = xDrawable; |
| pdraw->drawable = drawable; |
| pdraw->psc = psc; |
| |
| XCreateDrawable(pdp, psc->dpy, xDrawable, modes->visualID); |
| |
| /* Create a new drawable */ |
| pdraw->driDrawable = |
| (*swrast->createNewDrawable) (psc->__driScreen, config->driConfig, pdp); |
| |
| if (!pdraw->driDrawable) { |
| XDestroyDrawable(pdp, psc->dpy, xDrawable); |
| Xfree(pdp); |
| return NULL; |
| } |
| |
| pdraw->destroyDrawable = driDestroyDrawable; |
| |
| return pdraw; |
| } |
| |
| static int64_t |
| driSwapBuffers(__GLXDRIdrawable * pdraw, |
| int64_t target_msc, int64_t divisor, int64_t remainder) |
| { |
| (void) target_msc; |
| (void) divisor; |
| (void) remainder; |
| |
| (*pdraw->psc->core->swapBuffers) (pdraw->driDrawable); |
| |
| return 0; |
| } |
| |
| static void |
| driDestroyScreen(__GLXscreenConfigs * psc) |
| { |
| /* Free the direct rendering per screen data */ |
| (*psc->core->destroyScreen) (psc->__driScreen); |
| 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 __GLXDRIscreen * |
| driCreateScreen(__GLXscreenConfigs * psc, int screen, |
| __GLXdisplayPrivate * priv) |
| { |
| __GLXDRIscreen *psp; |
| const __DRIconfig **driver_configs; |
| const __DRIextension **extensions; |
| int i; |
| |
| psp = Xcalloc(1, sizeof *psp); |
| if (psp == NULL) |
| 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; |
| } |
| |
| driBindExtensions(psc); |
| driBindCommonExtensions(psc); |
| |
| psc->configs = driConvertConfigs(psc->core, psc->configs, driver_configs); |
| psc->visuals = driConvertConfigs(psc->core, psc->visuals, driver_configs); |
| |
| psc->driver_configs = driver_configs; |
| |
| psp->destroyScreen = driDestroyScreen; |
| psp->createContext = driCreateContext; |
| psp->createDrawable = driCreateDrawable; |
| psp->swapBuffers = driSwapBuffers; |
| psp->waitX = NULL; |
| psp->waitGL = NULL; |
| |
| return psp; |
| |
| handle_error: |
| Xfree(psp); |
| |
| if (psc->driver) |
| dlclose(psc->driver); |
| |
| ErrorMessageF("reverting to indirect rendering\n"); |
| |
| return NULL; |
| } |
| |
| /* Called from __glXFreeDisplayPrivate. |
| */ |
| static void |
| driDestroyDisplay(__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) |
| { |
| __GLXDRIdisplayPrivate *pdpyp; |
| |
| pdpyp = Xmalloc(sizeof *pdpyp); |
| if (pdpyp == NULL) |
| return NULL; |
| |
| pdpyp->base.destroyDisplay = driDestroyDisplay; |
| pdpyp->base.createScreen = driCreateScreen; |
| |
| return &pdpyp->base; |
| } |
| |
| #endif /* GLX_DIRECT_RENDERING */ |