diff options
author | Keith Whitwell <keithw@vmware.com> | 2010-03-04 16:09:33 +0000 |
---|---|---|
committer | Keith Whitwell <keithw@vmware.com> | 2010-03-04 16:09:33 +0000 |
commit | 94ce4eb3c27706d992226d847d123c46b14b1c4f (patch) | |
tree | 051157b0c0a2717484e2c0e41551c1e75f0cb289 /src/gallium/winsys/xlib/xlib_sw_winsys.c | |
parent | c7f7a309af54c76eccb451aa0c4f007656ebe7e1 (diff) |
softpipe: rework to use the llvmpipe winsys
Promote the llvmpipe winsys more or less unchanged to
state_trackers/sw_winsys.h.
Some minor breakages:
- softpipe::texture_blanket is broken, but scheduled for removal anyway.
- haven't fixed up g3vdl yet.
Diffstat (limited to 'src/gallium/winsys/xlib/xlib_sw_winsys.c')
-rw-r--r-- | src/gallium/winsys/xlib/xlib_sw_winsys.c | 394 |
1 files changed, 394 insertions, 0 deletions
diff --git a/src/gallium/winsys/xlib/xlib_sw_winsys.c b/src/gallium/winsys/xlib/xlib_sw_winsys.c new file mode 100644 index 0000000000..e4b02ba093 --- /dev/null +++ b/src/gallium/winsys/xlib/xlib_sw_winsys.c @@ -0,0 +1,394 @@ +/************************************************************************** + * + * Copyright 2007 Tungsten Graphics, Inc., Bismarck, ND., USA + * All Rights Reserved. + * + * 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, sub license, 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 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 NON-INFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS 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. + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * + **************************************************************************/ + +/* + * Authors: + * Keith Whitwell + * Brian Paul + */ + + + +#include "xm_api.h" + +#undef ASSERT +#undef Elements + +#include "pipe/p_format.h" +#include "pipe/p_context.h" +#include "util/u_inlines.h" +#include "util/u_format.h" +#include "util/u_math.h" +#include "util/u_memory.h" + +#include "state_tracker/sw_winsys.h" + +#include "xlib.h" + +/** + * Subclass of pipe_buffer for Xlib winsys. + * Low-level OS/window system memory buffer + */ +struct xm_displaytarget +{ + enum pipe_format format; + unsigned width; + unsigned height; + unsigned stride; + + void *data; + void *mapped; + + XImage *tempImage; +#ifdef USE_XSHM + int shm; + XShmSegmentInfo shminfo; +#endif +}; + + +/** + * Subclass of sw_winsys for Xlib winsys + */ +struct xmesa_sw_winsys +{ + struct sw_winsys base; +/* struct xmesa_visual *xm_visual; */ +}; + + + +/** Cast wrapper */ +static INLINE struct xm_displaytarget * +xm_displaytarget( struct sw_displaytarget *dt ) +{ + return (struct xm_displaytarget *)dt; +} + + +/** + * X Shared Memory Image extension code + */ + +#ifdef USE_XSHM + +static volatile int mesaXErrorFlag = 0; + +/** + * Catches potential Xlib errors. + */ +static int +mesaHandleXError(Display *dpy, XErrorEvent *event) +{ + (void) dpy; + (void) event; + mesaXErrorFlag = 1; + return 0; +} + + +static char *alloc_shm(struct xm_displaytarget *buf, unsigned size) +{ + XShmSegmentInfo *const shminfo = & buf->shminfo; + + shminfo->shmid = shmget(IPC_PRIVATE, size, IPC_CREAT|0777); + if (shminfo->shmid < 0) { + return NULL; + } + + shminfo->shmaddr = (char *) shmat(shminfo->shmid, 0, 0); + if (shminfo->shmaddr == (char *) -1) { + shmctl(shminfo->shmid, IPC_RMID, 0); + return NULL; + } + + shminfo->readOnly = False; + return shminfo->shmaddr; +} + + +/** + * Allocate a shared memory XImage back buffer for the given XMesaBuffer. + */ +static void +alloc_shm_ximage(struct xm_displaytarget *xm_buffer, + struct xmesa_buffer *xmb, + unsigned width, unsigned height) +{ + /* + * We have to do a _lot_ of error checking here to be sure we can + * really use the XSHM extension. It seems different servers trigger + * errors at different points if the extension won't work. Therefore + * we have to be very careful... + */ + int (*old_handler)(Display *, XErrorEvent *); + + xm_buffer->tempImage = XShmCreateImage(xmb->xm_visual->display, + xmb->xm_visual->visinfo->visual, + xmb->xm_visual->visinfo->depth, + ZPixmap, + NULL, + &xm_buffer->shminfo, + width, height); + if (xm_buffer->tempImage == NULL) { + xm_buffer->shm = 0; + return; + } + + + mesaXErrorFlag = 0; + old_handler = XSetErrorHandler(mesaHandleXError); + /* This may trigger the X protocol error we're ready to catch: */ + XShmAttach(xmb->xm_visual->display, &xm_buffer->shminfo); + XSync(xmb->xm_visual->display, False); + + if (mesaXErrorFlag) { + /* we are on a remote display, this error is normal, don't print it */ + XFlush(xmb->xm_visual->display); + mesaXErrorFlag = 0; + XDestroyImage(xm_buffer->tempImage); + xm_buffer->tempImage = NULL; + xm_buffer->shm = 0; + (void) XSetErrorHandler(old_handler); + return; + } + + xm_buffer->shm = 1; +} + +#endif /* USE_XSHM */ + +static boolean +xm_is_displaytarget_format_supported( struct sw_winsys *ws, + enum pipe_format format ) +{ + /* TODO: check visuals or other sensible thing here */ + return TRUE; +} + + +static void * +xm_displaytarget_map(struct sw_winsys *ws, + struct sw_displaytarget *dt, + unsigned flags) +{ + struct xm_displaytarget *xm_dt = xm_displaytarget(dt); + xm_dt->mapped = xm_dt->data; + return xm_dt->mapped; +} + +static void +xm_displaytarget_unmap(struct sw_winsys *ws, + struct sw_displaytarget *dt) +{ + struct xm_displaytarget *xm_dt = xm_displaytarget(dt); + xm_dt->mapped = NULL; +} + +static void +xm_displaytarget_destroy(struct sw_winsys *ws, + struct sw_displaytarget *dt) +{ + struct xm_displaytarget *xm_dt = xm_displaytarget(dt); + + if (xm_dt->data) { +#ifdef USE_XSHM + if (xm_dt->shminfo.shmid >= 0) { + shmdt(xm_dt->shminfo.shmaddr); + shmctl(xm_dt->shminfo.shmid, IPC_RMID, 0); + + xm_dt->shminfo.shmid = -1; + xm_dt->shminfo.shmaddr = (char *) -1; + } + else +#endif + FREE(xm_dt->data); + } + + FREE(xm_dt); +} + + +/** + * Display/copy the image in the surface into the X window specified + * by the XMesaBuffer. + */ +void +xlib_sw_display(struct xmesa_buffer *xm_buffer, + struct sw_displaytarget *dt) +{ + XImage *ximage; + struct xm_displaytarget *xm_dt = xm_displaytarget(dt); + static boolean no_swap = 0; + static boolean firsttime = 1; + + if (firsttime) { + no_swap = getenv("SP_NO_RAST") != NULL; + firsttime = 0; + } + + if (no_swap) + return; + +#ifdef USE_XSHM + if (xm_dt->shm) + { + if (xm_dt->tempImage == NULL) + { + assert(util_format_get_blockwidth(xm_dt->format) == 1); + assert(util_format_get_blockheight(xm_dt->format) == 1); + alloc_shm_ximage(xm_dt, xm_buffer, + xm_dt->stride / util_format_get_blocksize(xm_dt->format), + xm_dt->height); + } + + ximage = xm_dt->tempImage; + ximage->data = xm_dt->data; + + /* _debug_printf("XSHM\n"); */ + XShmPutImage(xm_buffer->xm_visual->display, xm_buffer->drawable, xm_buffer->gc, + ximage, 0, 0, 0, 0, xm_dt->width, xm_dt->height, False); + } + else +#endif + { + /* display image in Window */ + ximage = xm_dt->tempImage; + ximage->data = xm_dt->data; + + /* check that the XImage has been previously initialized */ + assert(ximage->format); + assert(ximage->bitmap_unit); + + /* update XImage's fields */ + ximage->width = xm_dt->width; + ximage->height = xm_dt->height; + ximage->bytes_per_line = xm_dt->stride; + + /* _debug_printf("XPUT\n"); */ + XPutImage(xm_buffer->xm_visual->display, xm_buffer->drawable, xm_buffer->gc, + ximage, 0, 0, 0, 0, xm_dt->width, xm_dt->height); + } +} + +/** + * Display/copy the image in the surface into the X window specified + * by the XMesaBuffer. + */ +static void +xm_displaytarget_display(struct sw_winsys *ws, + struct sw_displaytarget *dt, + void *context_private) +{ + XMesaContext xmctx = (XMesaContext) context_private; + struct xmesa_buffer *xm_buffer = xmctx->xm_buffer; + xm_sw_display(xm_buffer, dt); +} + + +static struct sw_displaytarget * +xm_displaytarget_create(struct sw_winsys *winsys, + enum pipe_format format, + unsigned width, unsigned height, + unsigned alignment, + unsigned *stride) +{ + struct xm_displaytarget *xm_dt = CALLOC_STRUCT(xm_displaytarget); + unsigned nblocksy, size; + + xm_dt = CALLOC_STRUCT(xm_displaytarget); + if(!xm_dt) + goto no_xm_dt; + + xm_dt->format = format; + xm_dt->width = width; + xm_dt->height = height; + + nblocksy = util_format_get_nblocksy(format, height); + xm_dt->stride = align(util_format_get_stride(format, width), alignment); + size = xm_dt->stride * nblocksy; + +#ifdef USE_XSHM + if (!debug_get_bool_option("XLIB_NO_SHM", FALSE)) + { + xm_dt->shminfo.shmid = -1; + xm_dt->shminfo.shmaddr = (char *) -1; + xm_dt->shm = TRUE; + + xm_dt->data = alloc_shm(xm_dt, size); + if(!xm_dt->data) + goto no_data; + } +#endif + + if(!xm_dt->data) { + xm_dt->data = align_malloc(size, alignment); + if(!xm_dt->data) + goto no_data; + } + + *stride = xm_dt->stride; + return (struct sw_displaytarget *)xm_dt; + +no_data: + FREE(xm_dt); +no_xm_dt: + return NULL; +} + + +static void +xm_destroy( struct sw_winsys *ws ) +{ + FREE(ws); +} + + +struct sw_winsys * +xlib_create_sw_winsys( void ) +{ + struct xmesa_sw_winsys *ws; + + ws = CALLOC_STRUCT(xmesa_sw_winsys); + if (!ws) + return NULL; + + ws->base.destroy = xm_destroy; + + ws->base.is_displaytarget_format_supported = xm_is_displaytarget_format_supported; + + ws->base.displaytarget_create = xm_displaytarget_create; + ws->base.displaytarget_map = xm_displaytarget_map; + ws->base.displaytarget_unmap = xm_displaytarget_unmap; + ws->base.displaytarget_destroy = xm_displaytarget_destroy; + + ws->base.displaytarget_display = xm_displaytarget_display; + + return &ws->base; +} + |