diff options
Diffstat (limited to 'xorg-server/glx/glxdri2.c')
| -rw-r--r-- | xorg-server/glx/glxdri2.c | 700 |
1 files changed, 700 insertions, 0 deletions
diff --git a/xorg-server/glx/glxdri2.c b/xorg-server/glx/glxdri2.c new file mode 100644 index 000000000..146ea828f --- /dev/null +++ b/xorg-server/glx/glxdri2.c @@ -0,0 +1,700 @@ +/* + * 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 <dix-config.h> +#endif + +#include <stdint.h> +#include <stdio.h> +#include <string.h> +#include <errno.h> +#include <dlfcn.h> + +#include <drm.h> +#include <GL/gl.h> +#include <GL/internal/dri_interface.h> +#include <GL/glxtokens.h> + +#include <windowstr.h> +#include <os.h> + +#define _XF86DRI_SERVER_ +#include <xf86drm.h> +#include <xf86.h> +#include <dri2.h> + +#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 __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 GLboolean +__glXDRIdrawableSwapBuffers(__GLXdrawable *drawable) +{ + __GLXDRIdrawable *private = (__GLXDRIdrawable *) drawable; + + __glXDRIdrawableCopySubBuffer(drawable, 0, 0, + private->width, private->height); + + return TRUE; +} + +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 int +__glXDRIdrawableSwapInterval(__GLXdrawable *drawable, int 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); +} + +#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->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"); + + for (i = 0; extensions[i]; i++) { +#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 + /* 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); + + 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); + } + + 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; +} + +__GLXprovider __glXDRI2Provider = { + __glXDRIscreenProbe, + "DRI2", + NULL +}; |