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xserver-multidpi/GL/glx/glxdri.c
Michel Dänzer 65f4690ecb __glXDRIscreenProbe: Use drmOpen/CloseOnce. 
Fixes https://bugs.freedesktop.org/show_bug.cgi?id=9275 . Based on patch from
Alan Swanson.
2007-01-19 17:56:06 +01:00

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/*
* Copyright © 2006 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 <sys/time.h>
#include <dlfcn.h>
#include <drm.h>
#include <GL/gl.h>
#include <GL/internal/dri_interface.h>
#include <windowstr.h>
#include <os.h>
#define _XF86DRI_SERVER_
#include <drm_sarea.h>
#include <xf86drm.h>
#include <xf86dristr.h>
#include <xf86str.h>
#include <xf86.h>
#include <dri.h>
#define DRI_NEW_INTERFACE_ONLY
#include "glxserver.h"
#include "glxutil.h"
#include "glcontextmodes.h"
#include "g_disptab.h"
#include "glapitable.h"
#include "glapi.h"
#include "glthread.h"
#include "dispatch.h"
#include "extension_string.h"
#define STRINGIFY(macro_or_string) STRINGIFY_ARG (macro_or_string)
#define STRINGIFY_ARG(contents) #contents
typedef struct __GLXDRIscreen __GLXDRIscreen;
typedef struct __GLXDRIcontext __GLXDRIcontext;
typedef struct __GLXDRIdrawable __GLXDRIdrawable;
struct __GLXDRIscreen {
__GLXscreen base;
__DRIscreen driScreen;
void *driver;
xf86EnterVTProc *enterVT;
xf86LeaveVTProc *leaveVT;
unsigned char glx_enable_bits[__GLX_EXT_BYTES];
};
struct __GLXDRIcontext {
__GLXcontext base;
__DRIcontext driContext;
};
struct __GLXDRIdrawable {
__GLXdrawable base;
__DRIdrawable *driDrawable;
};
/* History:
* 20021121 - Initial version
* 20021128 - Added __glXWindowExists() function
* 20021207 - Added support for dynamic GLX extensions,
* GLX_SGI_swap_control, GLX_SGI_video_sync,
* GLX_OML_sync_control, and GLX_MESA_swap_control.
* Never officially released. Do NOT test against
* this version. Use 20030317 instead.
* 20030317 - Added support GLX_SGIX_fbconfig,
* GLX_MESA_swap_frame_usage, GLX_OML_swap_method,
* GLX_{ARB,SGIS}_multisample, and
* GLX_SGIX_visual_select_group.
* 20030606 - Added support for GLX_SGI_make_current_read.
* 20030813 - Made support for dynamic extensions multi-head aware.
* 20030818 - Added support for GLX_MESA_allocate_memory in place of the
* deprecated GLX_NV_vertex_array_range & GLX_MESA_agp_offset
* interfaces.
* 20031201 - Added support for the first round of DRI interface changes.
* Do NOT test against this version! It has binary
* compatibility bugs, use 20040317 instead.
* 20040317 - Added the 'mode' field to __DRIcontextRec.
* 20040415 - Added support for bindContext3 and unbindContext3.
* 20040602 - Add __glXGetDrawableInfo. I though that was there
* months ago. :(
* 20050727 - Gut all the old interfaces. This breaks compatability with
* any DRI driver built to any previous version.
* 20060314 - Added support for GLX_MESA_copy_sub_buffer.
*/
#define INTERNAL_VERSION 20050727
static const char CREATE_NEW_SCREEN_FUNC[] =
"__driCreateNewScreen_" STRINGIFY (INTERNAL_VERSION);
/* The DRI driver entry point version wasn't bumped when the
* copySubBuffer functionality was added to the DRI drivers, but the
* functionality is still conditional on the value of the
* internal_api_version passed to __driCreateNewScreen. However, the
* screen constructor doesn't fail for a DRI driver that's older than
* the passed in version number, so there's no way we can know for
* sure that we can actually use the copySubBuffer functionality. But
* since the earliest (and at this point only) released mesa version
* (6.5) that uses the 20050727 entry point does have copySubBuffer,
* we'll just settle for that. We still have to pass in a higher to
* the screen constructor to enable the functionality.
*/
#define COPY_SUB_BUFFER_INTERNAL_VERSION 20060314
static void
__glXDRIleaveServer(void)
{
DRIBlockHandler(NULL, NULL, NULL);
}
static void
__glXDRIenterServer(void)
{
DRIWakeupHandler(NULL, 0, NULL);
}
/**
* \bug
* We're jumping through hoops here to get the DRIdrawable which the DRI
* driver tries to keep to it self... cf. FIXME in \c createDrawable.
*/
static void
__glXDRIdrawableFoo(__GLXDRIdrawable *draw)
{
__GLXDRIscreen * const screen =
(__GLXDRIscreen *) __glXgetActiveScreen(draw->base.pDraw->pScreen->myNum);
draw->driDrawable = (*screen->driScreen.getDrawable)(NULL,
draw->base.drawId,
screen->driScreen.private);
}
static void
__glXDRIdrawableDestroy(__GLXdrawable *private)
{
#if 0
(*glxPriv->driDrawable.destroyDrawable)(NULL,
glxPriv->driDrawable.private);
#endif
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 *basePrivate)
{
__GLXDRIdrawable *private = (__GLXDRIdrawable *) basePrivate;
__glXDRIdrawableFoo(private);
(*private->driDrawable->swapBuffers)(NULL,
private->driDrawable->private);
return TRUE;
}
static int
__glXDRIdrawableSwapInterval(__GLXdrawable *baseDrawable, int interval)
{
__GLXDRIdrawable *draw = (__GLXDRIdrawable *) baseDrawable;
__glXDRIdrawableFoo(draw);
draw->driDrawable->swap_interval = interval;
return 0;
}
static void
__glXDRIdrawableCopySubBuffer(__GLXdrawable *basePrivate,
int x, int y, int w, int h)
{
__GLXDRIdrawable *private = (__GLXDRIdrawable *) basePrivate;
__glXDRIdrawableFoo(private);
(*private->driDrawable->copySubBuffer)(NULL,
private->driDrawable->private,
x, y, w, h);
}
static void
__glXDRIcontextDestroy(__GLXcontext *baseContext)
{
__GLXDRIcontext *context = (__GLXDRIcontext *) baseContext;
context->driContext.destroyContext(NULL,
context->base.pScreen->myNum,
context->driContext.private);
__glXContextDestroy(&context->base);
xfree(context);
}
static int
__glXDRIcontextMakeCurrent(__GLXcontext *baseContext)
{
__GLXDRIcontext *context = (__GLXDRIcontext *) baseContext;
return (*context->driContext.bindContext)(NULL,
context->base.pScreen->myNum,
baseContext->drawPriv->drawId,
baseContext->readPriv->drawId,
&context->driContext);
}
static int
__glXDRIcontextLoseCurrent(__GLXcontext *baseContext)
{
__GLXDRIcontext *context = (__GLXDRIcontext *) baseContext;
return (*context->driContext.unbindContext)(NULL,
context->base.pScreen->myNum,
baseContext->drawPriv->drawId,
baseContext->readPriv->drawId,
&context->driContext);
}
static int
__glXDRIcontextCopy(__GLXcontext *baseDst, __GLXcontext *baseSrc,
unsigned long mask)
{
__GLXDRIcontext *dst = (__GLXDRIcontext *) baseDst;
__GLXDRIcontext *src = (__GLXDRIcontext *) baseSrc;
/* FIXME: We will need to add DRIcontext::copyContext for this. */
(void) dst;
(void) src;
return FALSE;
}
static int
__glXDRIcontextForceCurrent(__GLXcontext *baseContext)
{
__GLXDRIcontext *context = (__GLXDRIcontext *) baseContext;
return (*context->driContext.bindContext)(NULL,
context->base.pScreen->myNum,
baseContext->drawPriv->drawId,
baseContext->readPriv->drawId,
&context->driContext);
}
static int
glxCountBits(int word)
{
int ret = 0;
while (word) {
ret += (word & 1);
word >>= 1;
}
return ret;
}
static void
glxFillAlphaChannel (PixmapPtr pixmap, int x, int y, int width, int height)
{
int i;
CARD32 *p, *end, *pixels = (CARD32 *)pixmap->devPrivate.ptr;
CARD32 rowstride = pixmap->devKind / 4;
for (i = y; i < y + height; i++)
{
p = &pixels[i * rowstride + x];
end = p + width;
while (p < end)
*p++ |= 0xFF000000;
}
}
/*
* (sticking this here for lack of a better place)
* Known issues with the GLX_EXT_texture_from_pixmap implementation:
* - In general we ignore the fbconfig, lots of examples follow
* - No fbconfig handling for multiple mipmap levels
* - No fbconfig handling for 1D textures
* - No fbconfig handling for TEXTURE_TARGET
* - No fbconfig exposure of Y inversion state
* - No GenerateMipmapEXT support (due to no FBO support)
* - No support for anything but 16bpp and 32bpp-sparse pixmaps
*/
static int
__glXDRIbindTexImage(__GLXcontext *baseContext,
int buffer,
__GLXpixmap *glxPixmap)
{
RegionPtr pRegion;
PixmapPtr pixmap;
int bpp;
GLenum target, format, type;
pixmap = (PixmapPtr) glxPixmap->pDraw;
if (!glxPixmap->pDamage) {
glxPixmap->pDamage = DamageCreate(NULL, NULL, DamageReportNone,
TRUE, glxPixmap->pScreen, NULL);
if (!glxPixmap->pDamage)
return BadAlloc;
DamageRegister ((DrawablePtr) pixmap, glxPixmap->pDamage);
pRegion = NULL;
} else {
pRegion = DamageRegion(glxPixmap->pDamage);
if (REGION_NIL(pRegion))
return Success;
}
/* XXX 24bpp packed, 8, etc */
if (pixmap->drawable.depth >= 24) {
bpp = 4;
format = GL_BGRA;
type =
#if X_BYTE_ORDER == X_LITTLE_ENDIAN
GL_UNSIGNED_BYTE;
#else
GL_UNSIGNED_INT_8_8_8_8_REV;
#endif
} else {
bpp = 2;
format = GL_RGB;
type = GL_UNSIGNED_SHORT_5_6_5;
}
if (!(glxCountBits(pixmap->drawable.width) == 1 &&
glxCountBits(pixmap->drawable.height) == 1)
/* || strstr(CALL_GetString(GL_EXTENSIONS,
"GL_ARB_texture_non_power_of_two")) */)
target = GL_TEXTURE_RECTANGLE_ARB;
else
target = GL_TEXTURE_2D;
CALL_PixelStorei( GET_DISPATCH(), (GL_UNPACK_ROW_LENGTH,
pixmap->devKind / bpp) );
if (pRegion == NULL)
{
if (pixmap->drawable.depth == 24)
glxFillAlphaChannel(pixmap,
pixmap->drawable.x,
pixmap->drawable.y,
pixmap->drawable.width,
pixmap->drawable.height);
CALL_PixelStorei( GET_DISPATCH(), (GL_UNPACK_SKIP_PIXELS,
pixmap->drawable.x) );
CALL_PixelStorei( GET_DISPATCH(), (GL_UNPACK_SKIP_ROWS,
pixmap->drawable.y) );
CALL_TexImage2D( GET_DISPATCH(),
(target,
0,
bpp == 4 ? 4 : 3,
pixmap->drawable.width,
pixmap->drawable.height,
0,
format,
type,
pixmap->devPrivate.ptr) );
} else {
int i, numRects;
BoxPtr p;
numRects = REGION_NUM_RECTS (pRegion);
p = REGION_RECTS (pRegion);
for (i = 0; i < numRects; i++)
{
if (pixmap->drawable.depth == 24)
glxFillAlphaChannel(pixmap,
pixmap->drawable.x + p[i].x1,
pixmap->drawable.y + p[i].y1,
p[i].x2 - p[i].x1,
p[i].y2 - p[i].y1);
CALL_PixelStorei( GET_DISPATCH(), (GL_UNPACK_SKIP_PIXELS,
pixmap->drawable.x + p[i].x1) );
CALL_PixelStorei( GET_DISPATCH(), (GL_UNPACK_SKIP_ROWS,
pixmap->drawable.y + p[i].y1) );
CALL_TexSubImage2D( GET_DISPATCH(),
(target,
0,
p[i].x1, p[i].y1,
p[i].x2 - p[i].x1, p[i].y2 - p[i].y1,
format,
type,
pixmap->devPrivate.ptr) );
}
}
DamageEmpty(glxPixmap->pDamage);
return Success;
}
static int
__glXDRIreleaseTexImage(__GLXcontext *baseContext,
int buffer,
__GLXpixmap *pixmap)
{
return Success;
}
static __GLXtextureFromPixmap __glXDRItextureFromPixmap = {
__glXDRIbindTexImage,
__glXDRIreleaseTexImage
};
static void
__glXDRIscreenDestroy(__GLXscreen *baseScreen)
{
__GLXDRIscreen *screen = (__GLXDRIscreen *) baseScreen;
screen->driScreen.destroyScreen(NULL,
screen->base.pScreen->myNum,
screen->driScreen.private);
dlclose(screen->driver);
__glXScreenDestroy(baseScreen);
xfree(screen);
}
static __GLXcontext *
__glXDRIscreenCreateContext(__GLXscreen *baseScreen,
__GLcontextModes *modes,
__GLXcontext *baseShareContext)
{
__GLXDRIscreen *screen = (__GLXDRIscreen *) baseScreen;
__GLXDRIcontext *context, *shareContext;
void *sharePrivate;
shareContext = (__GLXDRIcontext *) baseShareContext;
if (shareContext)
sharePrivate = shareContext->driContext.private;
else
sharePrivate = 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.private =
screen->driScreen.createNewContext(NULL, modes,
0, /* render type */
sharePrivate,
&context->driContext);
context->driContext.mode = modes;
return &context->base;
}
static __GLXdrawable *
__glXDRIscreenCreateDrawable(__GLXscreen *screen,
DrawablePtr pDraw,
XID drawId,
__GLcontextModes *modes)
{
__GLXDRIdrawable *private;
private = xalloc(sizeof *private);
if (private == NULL)
return NULL;
memset(private, 0, sizeof *private);
if (!__glXDrawableInit(&private->base, screen, pDraw, drawId, modes)) {
xfree(private);
return NULL;
}
private->base.destroy = __glXDRIdrawableDestroy;
private->base.resize = __glXDRIdrawableResize;
private->base.swapBuffers = __glXDRIdrawableSwapBuffers;
private->base.copySubBuffer = __glXDRIdrawableCopySubBuffer;
#if 0
/* FIXME: It would only be natural that we called
* driScreen->createNewDrawable here but the DRI drivers manage
* them a little oddly. FIXME: describe this better.*/
/* The last argument is 'attrs', which is used with pbuffers which
* we currently don't support. */
glxPriv->driDrawable.private =
(screen->driScreen.createNewDrawable)(NULL, modes,
drawId,
&glxPriv->driDrawable,
0,
NULL);
#endif
return &private->base;
}
static unsigned
filter_modes(__GLcontextModes **server_modes,
const __GLcontextModes *driver_modes)
{
__GLcontextModes * m;
__GLcontextModes ** prev_next;
const __GLcontextModes * check;
unsigned modes_count = 0;
if ( driver_modes == NULL ) {
LogMessage(X_WARNING,
"AIGLX: 3D driver returned no fbconfigs.\n");
return 0;
}
/* For each mode in server_modes, check to see if a matching mode exists
* in driver_modes. If not, then the mode is not available.
*/
prev_next = server_modes;
for ( m = *prev_next ; m != NULL ; m = *prev_next ) {
GLboolean do_delete = GL_TRUE;
for ( check = driver_modes ; check != NULL ; check = check->next ) {
if ( _gl_context_modes_are_same( m, check ) ) {
do_delete = GL_FALSE;
break;
}
}
/* The 3D has to support all the modes that match the GLX visuals
* sent from the X server.
*/
if ( do_delete && (m->visualID != 0) ) {
do_delete = GL_FALSE;
LogMessage(X_WARNING,
"AIGLX: 3D driver claims to not support "
"visual 0x%02x\n", m->visualID);
}
if ( do_delete ) {
*prev_next = m->next;
m->next = NULL;
_gl_context_modes_destroy( m );
}
else {
modes_count++;
prev_next = & m->next;
}
}
return modes_count;
}
static void
enable_glx_extension(void *psc, const char *ext_name)
{
__GLXDRIscreen * const screen = (__GLXDRIscreen *) psc;
__glXEnableExtension(screen->glx_enable_bits, ext_name);
}
static __DRIfuncPtr getProcAddress(const char *proc_name)
{
if (strcmp(proc_name, "glxEnableExtension") == 0) {
return (__DRIfuncPtr) enable_glx_extension;
}
return NULL;
}
static __DRIscreen *findScreen(__DRInativeDisplay *dpy, int scrn)
{
__GLXDRIscreen *screen = (__GLXDRIscreen *) __glXgetActiveScreen(scrn);
return &screen->driScreen;
}
static GLboolean windowExists(__DRInativeDisplay *dpy, __DRIid draw)
{
WindowPtr pWin = (WindowPtr) LookupIDByType(draw, RT_WINDOW);
return pWin == NULL ? GL_FALSE : GL_TRUE;
}
static GLboolean createContext(__DRInativeDisplay *dpy, int screen,
int configID, void *contextID,
drm_context_t *hw_context)
{
XID fakeID;
VisualPtr visual;
int i;
ScreenPtr pScreen;
GLboolean retval;
pScreen = screenInfo.screens[screen];
/* Find the requested X visual */
visual = pScreen->visuals;
for (i = 0; i < pScreen->numVisuals; i++, visual++)
if (visual->vid == configID)
break;
if (i == pScreen->numVisuals)
return GL_FALSE;
fakeID = FakeClientID(0);
*(XID *) contextID = fakeID;
__glXDRIenterServer();
retval = DRICreateContext(pScreen, visual, fakeID, hw_context);
__glXDRIleaveServer();
return retval;
}
static GLboolean destroyContext(__DRInativeDisplay *dpy, int screen,
__DRIid context)
{
GLboolean retval;
__glXDRIenterServer();
retval = DRIDestroyContext(screenInfo.screens[screen], context);
__glXDRIleaveServer();
return retval;
}
static GLboolean
createDrawable(__DRInativeDisplay *dpy, int screen,
__DRIid drawable, drm_drawable_t *hHWDrawable)
{
DrawablePtr pDrawable;
GLboolean retval;
pDrawable = (DrawablePtr) LookupIDByClass(drawable, RC_DRAWABLE);
if (!pDrawable)
return GL_FALSE;
__glXDRIenterServer();
retval = DRICreateDrawable(screenInfo.screens[screen],
drawable,
pDrawable,
hHWDrawable);
__glXDRIleaveServer();
return retval;
}
static GLboolean
destroyDrawable(__DRInativeDisplay *dpy, int screen, __DRIid drawable)
{
DrawablePtr pDrawable;
GLboolean retval;
pDrawable = (DrawablePtr) LookupIDByClass(drawable, RC_DRAWABLE);
if (!pDrawable)
return GL_FALSE;
__glXDRIenterServer();
retval = DRIDestroyDrawable(screenInfo.screens[screen],
drawable,
pDrawable);
__glXDRIleaveServer();
return retval;
}
static GLboolean
getDrawableInfo(__DRInativeDisplay *dpy, int screen,
__DRIid drawable, unsigned int *index, unsigned int *stamp,
int *x, int *y, int *width, int *height,
int *numClipRects, drm_clip_rect_t **ppClipRects,
int *backX, int *backY,
int *numBackClipRects, drm_clip_rect_t **ppBackClipRects)
{
DrawablePtr pDrawable;
drm_clip_rect_t *pClipRects, *pBackClipRects;
GLboolean retval;
size_t size;
pDrawable = (DrawablePtr) LookupIDByClass(drawable, RC_DRAWABLE);
if (!pDrawable) {
ErrorF("getDrawableInfo failed to look up window\n");
*index = 0;
*stamp = 0;
*x = 0;
*y = 0;
*width = 0;
*height = 0;
*numClipRects = 0;
*ppClipRects = NULL;
*backX = 0;
*backY = 0;
*numBackClipRects = 0;
*ppBackClipRects = NULL;
return GL_FALSE;
}
__glXDRIenterServer();
retval = DRIGetDrawableInfo(screenInfo.screens[screen],
pDrawable, index, stamp,
x, y, width, height,
numClipRects, &pClipRects,
backX, backY,
numBackClipRects, &pBackClipRects);
__glXDRIleaveServer();
if (*numClipRects > 0) {
size = sizeof (drm_clip_rect_t) * *numClipRects;
*ppClipRects = xalloc (size);
if (*ppClipRects != NULL)
memcpy (*ppClipRects, pClipRects, size);
}
else {
*ppClipRects = NULL;
}
if (*numBackClipRects > 0) {
size = sizeof (drm_clip_rect_t) * *numBackClipRects;
*ppBackClipRects = xalloc (size);
if (*ppBackClipRects != NULL)
memcpy (*ppBackClipRects, pBackClipRects, size);
}
else {
*ppBackClipRects = NULL;
}
return GL_TRUE;
}
static int
getUST(int64_t *ust)
{
struct timeval tv;
if (ust == NULL)
return -EFAULT;
if (gettimeofday(&tv, NULL) == 0) {
ust[0] = (tv.tv_sec * 1000000) + tv.tv_usec;
return 0;
} else {
return -errno;
}
}
/* Table of functions that we export to the driver. */
static const __DRIinterfaceMethods interface_methods = {
getProcAddress,
_gl_context_modes_create,
_gl_context_modes_destroy,
findScreen,
windowExists,
createContext,
destroyContext,
createDrawable,
destroyDrawable,
getDrawableInfo,
getUST,
NULL, /* glXGetMscRateOML, */
};
static const char dri_driver_path[] = DRI_DRIVER_PATH;
static Bool
glxDRIEnterVT (int index, int flags)
{
__GLXDRIscreen *screen = (__GLXDRIscreen *) __glXgetActiveScreen(index);
LogMessage(X_INFO, "AIGLX: Resuming AIGLX clients after VT switch\n");
glxResumeClients();
return (*screen->enterVT) (index, flags);
}
static void
glxDRILeaveVT (int index, int flags)
{
__GLXDRIscreen *screen = (__GLXDRIscreen *) __glXgetActiveScreen(index);
LogMessage(X_INFO, "AIGLX: Suspending AIGLX clients for VT switch\n");
glxSuspendClients();
return (*screen->leaveVT) (index, flags);
}
static __GLXscreen *
__glXDRIscreenProbe(ScreenPtr pScreen)
{
PFNCREATENEWSCREENFUNC createNewScreen;
drm_handle_t hSAREA;
drmAddress pSAREA = NULL;
char *BusID;
__DRIversion ddx_version;
__DRIversion dri_version;
__DRIversion drm_version;
__DRIframebuffer framebuffer;
int fd = -1;
int status;
int api_ver = COPY_SUB_BUFFER_INTERNAL_VERSION;
drm_magic_t magic;
drmVersionPtr version;
int newlyopened;
char *driverName;
drm_handle_t hFB;
int junk;
__GLcontextModes * driver_modes;
__GLXDRIscreen *screen;
void *dev_priv = NULL;
char filename[128];
Bool isCapable;
size_t buffer_size;
ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
if (!xf86LoaderCheckSymbol("DRIQueryDirectRenderingCapable")) {
LogMessage(X_ERROR, "AIGLX: DRI module not loaded\n");
return NULL;
}
if (!DRIQueryDirectRenderingCapable(pScreen, &isCapable) || !isCapable) {
LogMessage(X_ERROR,
"AIGLX: Screen %d is not DRI capable\n", pScreen->myNum);
return NULL;
}
screen = xalloc(sizeof *screen);
if (screen == NULL)
return NULL;
memset(screen, 0, sizeof *screen);
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);
screen->driScreen.screenConfigs = screen;
/* DRI protocol version. */
dri_version.major = XF86DRI_MAJOR_VERSION;
dri_version.minor = XF86DRI_MINOR_VERSION;
dri_version.patch = XF86DRI_PATCH_VERSION;
framebuffer.base = NULL;
framebuffer.dev_priv = NULL;
if (!DRIOpenConnection(pScreen, &hSAREA, &BusID)) {
LogMessage(X_ERROR, "AIGLX error: DRIOpenConnection failed\n");
goto handle_error;
}
fd = drmOpenOnce(NULL, BusID, &newlyopened);
if (fd < 0) {
LogMessage(X_ERROR, "AIGLX error: drmOpenOnce failed (%s)\n",
strerror(-fd));
goto handle_error;
}
if (drmGetMagic(fd, &magic)) {
LogMessage(X_ERROR, "AIGLX error: drmGetMagic failed\n");
goto handle_error;
}
version = drmGetVersion(fd);
if (version) {
drm_version.major = version->version_major;
drm_version.minor = version->version_minor;
drm_version.patch = version->version_patchlevel;
drmFreeVersion(version);
}
else {
drm_version.major = -1;
drm_version.minor = -1;
drm_version.patch = -1;
}
if (newlyopened && !DRIAuthConnection(pScreen, magic)) {
LogMessage(X_ERROR, "AIGLX error: DRIAuthConnection failed\n");
goto handle_error;
}
/* Get device name (like "tdfx") and the ddx version numbers.
* We'll check the version in each DRI driver's "createNewScreen"
* function. */
if (!DRIGetClientDriverName(pScreen,
&ddx_version.major,
&ddx_version.minor,
&ddx_version.patch,
&driverName)) {
LogMessage(X_ERROR, "AIGLX error: DRIGetClientDriverName failed\n");
goto handle_error;
}
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;
}
createNewScreen = dlsym(screen->driver, CREATE_NEW_SCREEN_FUNC);
if (createNewScreen == NULL) {
LogMessage(X_ERROR, "AIGLX error: dlsym for %s failed (%s)\n",
CREATE_NEW_SCREEN_FUNC, dlerror());
goto handle_error;
}
/*
* Get device-specific info. pDevPriv will point to a struct
* (such as DRIRADEONRec in xfree86/driver/ati/radeon_dri.h) that
* has information about the screen size, depth, pitch, ancilliary
* buffers, DRM mmap handles, etc.
*/
if (!DRIGetDeviceInfo(pScreen, &hFB, &junk,
&framebuffer.size, &framebuffer.stride,
&framebuffer.dev_priv_size, &framebuffer.dev_priv)) {
LogMessage(X_ERROR, "AIGLX error: XF86DRIGetDeviceInfo failed");
goto handle_error;
}
/* Sigh... the DRI interface is broken; the DRI driver will free
* the dev private pointer using _mesa_free() on screen destroy,
* but we can't use _mesa_malloc() here. In fact, the DRI driver
* shouldn't free data it didn't allocate itself, but what can you
* do... */
dev_priv = xalloc(framebuffer.dev_priv_size);
if (dev_priv == NULL) {
LogMessage(X_ERROR, "AIGLX error: dev_priv allocation failed");
goto handle_error;
}
memcpy(dev_priv, framebuffer.dev_priv, framebuffer.dev_priv_size);
framebuffer.dev_priv = dev_priv;
framebuffer.width = pScreen->width;
framebuffer.height = pScreen->height;
/* Map the framebuffer region. */
status = drmMap(fd, hFB, framebuffer.size,
(drmAddressPtr)&framebuffer.base);
if (status != 0) {
LogMessage(X_ERROR, "AIGLX error: drmMap of framebuffer failed (%s)",
strerror(-status));
goto handle_error;
}
/* Map the SAREA region. Further mmap regions may be setup in
* each DRI driver's "createNewScreen" function.
*/
status = drmMap(fd, hSAREA, SAREA_MAX, &pSAREA);
if (status != 0) {
LogMessage(X_ERROR, "AIGLX error: drmMap of SAREA failed (%s)",
strerror(-status));
goto handle_error;
}
driver_modes = NULL;
screen->driScreen.private =
(*createNewScreen)(NULL, pScreen->myNum,
&screen->driScreen,
screen->base.modes,
&ddx_version,
&dri_version,
&drm_version,
&framebuffer,
pSAREA,
fd,
api_ver,
&interface_methods,
&driver_modes);
if (screen->driScreen.private == NULL) {
LogMessage(X_ERROR, "AIGLX error: Calling driver entry point failed");
goto handle_error;
}
__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);
}
filter_modes(&screen->base.modes, driver_modes);
_gl_context_modes_destroy(driver_modes);
__glXsetEnterLeaveServerFuncs(__glXDRIenterServer, __glXDRIleaveServer);
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 (pSAREA != NULL)
drmUnmap(pSAREA, SAREA_MAX);
if (framebuffer.base != NULL)
drmUnmap((drmAddress)framebuffer.base, framebuffer.size);
if (dev_priv != NULL)
xfree(dev_priv);
if (fd >= 0)
drmCloseOnce(fd);
DRICloseConnection(pScreen);
if (screen->driver)
dlclose(screen->driver);
xfree(screen);
LogMessage(X_ERROR, "AIGLX: reverting to software rendering\n");
return NULL;
}
__GLXprovider __glXDRIProvider = {
__glXDRIscreenProbe,
"DRI",
NULL
};
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