Move GL/glx on level up now that it's the only thing left under GL.

1 files changed, 584 insertions, 0 deletions

diff --git a/glx/glxdri2.c b/glx/glxdri2.c
new file mode 100644
index 000000000..9a3bc1fdb
--- /dev/null
+++ b/glx/glxdri2.c
@@ -0,0 +1,584 @@
+/*
+ * 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 __DRIcopySubBufferExtension *copySubBuffer;
+    const __DRIswapControlExtension *swapControl;
+    const __DRItexBufferExtension *texBuffer;
+
+    unsigned char glx_enable_bits[__GLX_EXT_BYTES];
+};
+
+struct __GLXDRIcontext {
+    __GLXcontext	 base;
+    __DRIcontext	*driContext;
+};
+
+struct __GLXDRIdrawable {
+    __GLXdrawable	 base;
+    __DRIdrawable	*driDrawable;
+    __GLXDRIscreen	*screen;
+};
+
+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);
+
+    xfree(private);
+}
+
+static GLboolean
+__glXDRIdrawableResize(__GLXdrawable *glxPriv)
+{
+    /* Nothing to do here, the DRI driver asks the server for drawable
+     * geometry when it sess the SAREA timestamps change.*/
+
+    return GL_TRUE;
+}
+
+static GLboolean
+__glXDRIdrawableSwapBuffers(__GLXdrawable *drawable)
+{
+    __GLXDRIdrawable *private = (__GLXDRIdrawable *) drawable;
+    const __DRIcoreExtension *core = private->screen->core;
+
+    (*core->swapBuffers)(private->driDrawable);
+
+    return TRUE;
+}
+
+
+static int
+__glXDRIdrawableSwapInterval(__GLXdrawable *drawable, int interval)
+{
+    __GLXDRIdrawable *private = (__GLXDRIdrawable *) drawable;
+    const __DRIswapControlExtension *swapControl = private->screen->swapControl;
+
+    if (swapControl)
+	swapControl->setSwapInterval(private->driDrawable, interval);
+
+    return 0;
+}
+
+
+static void
+__glXDRIdrawableCopySubBuffer(__GLXdrawable *basePrivate,
+			       int x, int y, int w, int h)
+{
+    __GLXDRIdrawable *private = (__GLXDRIdrawable *) basePrivate;
+    const __DRIcopySubBufferExtension *copySubBuffer =
+	    private->screen->copySubBuffer;
+
+    if (copySubBuffer)
+	(*copySubBuffer->copySubBuffer)(private->driDrawable, x, y, w, h);
+}
+
+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;
+
+    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;
+    const __DRIcoreExtension *core = screen->core;
+    __DRIcontext *driShare;
+
+    shareContext = (__GLXDRIcontext *) baseShareContext;
+    if (shareContext)
+	driShare = shareContext->driContext;
+    else
+	driShare = NULL;
+
+    context = xalloc(sizeof *context);
+    if (context == NULL)
+	return NULL;
+
+    memset(context, 0, sizeof *context);
+    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 =
+	(*core->createNewContext)(screen->driScreen,
+				  config->driConfig, driShare, context);
+
+    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;
+    GLboolean retval;
+    unsigned int handle, head;
+
+    private = xalloc(sizeof *private);
+    if (private == NULL)
+	return NULL;
+
+    memset(private, 0, sizeof *private);
+
+    private->screen = driScreen;
+    if (!__glXDrawableInit(&private->base, screen,
+			   pDraw, type, drawId, glxConfig)) {
+        xfree(private);
+	return NULL;
+    }
+
+    private->base.destroy       = __glXDRIdrawableDestroy;
+    private->base.resize        = __glXDRIdrawableResize;
+    private->base.swapBuffers   = __glXDRIdrawableSwapBuffers;
+    private->base.copySubBuffer = __glXDRIdrawableCopySubBuffer;
+
+    retval = DRI2CreateDrawable(pDraw, &handle, &head);
+
+    private->driDrawable =
+	(*driScreen->core->createNewDrawable)(driScreen->driScreen, 
+					      config->driConfig,
+					      handle, head, private);
+
+    return &private->base;
+}
+
+static void dri2ReemitDrawableInfo(__DRIdrawable *draw, unsigned int *tail,
+				   void *loaderPrivate)
+{
+    __GLXDRIdrawable *pdraw = loaderPrivate;
+
+    DRI2ReemitDrawableInfo(pdraw->base.pDraw, tail);
+}
+
+static void dri2PostDamage(__DRIdrawable *draw,
+			   struct drm_clip_rect *rects,
+			   int numRects, void *loaderPrivate)
+{ 
+    __GLXDRIdrawable *drawable = loaderPrivate;
+    DrawablePtr pDraw = drawable->base.pDraw;
+    RegionRec region;
+
+    REGION_INIT(pDraw->pScreen, &region, (BoxPtr) rects, numRects);
+    REGION_TRANSLATE(pScreen, &region, pDraw->x, pDraw->y);
+    DamageDamageRegion(pDraw, &region);
+    REGION_UNINIT(pDraw->pScreen, &region);
+}
+
+static const __DRIloaderExtension loaderExtension = {
+    { __DRI_LOADER, __DRI_LOADER_VERSION },
+    dri2ReemitDrawableInfo,
+    dri2PostDamage
+};
+
+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);
+
+    for (i = 0; extensions[i]; i++) {
+#ifdef __DRI_COPY_SUB_BUFFER
+	if (strcmp(extensions[i]->name, __DRI_COPY_SUB_BUFFER) == 0) {
+	    screen->copySubBuffer =
+		(const __DRIcopySubBufferExtension *) extensions[i];
+	    __glXEnableExtension(screen->glx_enable_bits,
+				 "GLX_MESA_copy_sub_buffer");
+	    
+	    LogMessage(X_INFO, "AIGLX: enabled GLX_MESA_copy_sub_buffer\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
+	/* Ignore unknown extensions */
+    }
+}
+
+static __GLXscreen *
+__glXDRIscreenProbe(ScreenPtr pScreen)
+{
+    const char *driverName;
+    __GLXDRIscreen *screen;
+    char filename[128];
+    size_t buffer_size;
+    ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
+    unsigned int sareaHandle;
+    const __DRIextension **extensions;
+    const __DRIconfig **driConfigs;
+    int i;
+
+    screen = xalloc(sizeof *screen);
+    if (screen == NULL)
+	return NULL;
+    memset(screen, 0, sizeof *screen);
+
+    if (!xf86LoaderCheckSymbol("DRI2Connect") ||
+	!DRI2Connect(pScreen, &screen->fd, &driverName, &sareaHandle)) {
+	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 (screen->core == NULL) {
+	LogMessage(X_ERROR, "AIGLX error: %s exports no DRI extension\n",
+		   driverName);
+	goto handle_error;
+    }
+
+    screen->driScreen =
+	(*screen->core->createNewScreen)(pScreen->myNum,
+					 screen->fd,
+					 sareaHandle,
+					 loader_extensions,
+					 &driConfigs,
+					 screen);
+
+    if (screen->driScreen == NULL) {
+	LogMessage(X_ERROR, "AIGLX error: Calling driver entry point failed");
+	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
+};