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.

1 files changed, 6 insertions, 357 deletions

diff --git a/src/gallium/winsys/xlib/xlib_llvmpipe.c b/src/gallium/winsys/xlib/xlib_llvmpipe.c
index 6cebd4c201..9929ba52e7 100644
--- a/src/gallium/winsys/xlib/xlib_llvmpipe.c
+++ b/src/gallium/winsys/xlib/xlib_llvmpipe.c
@@ -33,367 +33,16 @@
  */
 
 
-#if defined(GALLIUM_LLVMPIPE)
-
-#include "xm_api.h"
 
-#undef ASSERT
-#undef Elements
-
-#include "util/u_simple_screen.h"
-#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 "llvmpipe/lp_winsys.h"
-#include "llvmpipe/lp_texture.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 llvmpipe_winsys for Xlib winsys
- */
-struct xmesa_llvmpipe_winsys
-{
-   struct llvmpipe_winsys base;
-/*   struct xmesa_visual *xm_visual; */
-};
-
-
-
-/** Cast wrapper */
-static INLINE struct xm_displaytarget *
-xm_displaytarget( struct llvmpipe_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 llvmpipe_winsys *ws,
-                                      enum pipe_format format )
-{
-   /* TODO: check visuals or other sensible thing here */
-   return TRUE;
-}
-
-
-static void *
-xm_displaytarget_map(struct llvmpipe_winsys *ws,
-                     struct llvmpipe_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 llvmpipe_winsys *ws,
-                       struct llvmpipe_displaytarget *dt)
-{
-   struct xm_displaytarget *xm_dt = xm_displaytarget(dt);
-   xm_dt->mapped = NULL;
-}
-
-static void
-xm_displaytarget_destroy(struct llvmpipe_winsys *ws,
-                         struct llvmpipe_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.
- */
-static void
-xm_llvmpipe_display(struct xmesa_buffer *xm_buffer,
-                    struct llvmpipe_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 llvmpipe_winsys *ws,
-                         struct llvmpipe_displaytarget *dt,
-                         void *context_private)
-{
-   XMesaContext xmctx = (XMesaContext) context_private;
-   struct xmesa_buffer *xm_buffer = xmctx->xm_buffer;
-   xm_llvmpipe_display(xm_buffer, dt);
-}
-
 
-static struct llvmpipe_displaytarget *
-xm_displaytarget_create(struct llvmpipe_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 llvmpipe_displaytarget *)xm_dt;
-
-no_data:
-   FREE(xm_dt);
-no_xm_dt:
-   return NULL;
-}
-
-
-static void
-xm_destroy( struct llvmpipe_winsys *ws )
-{
-   FREE(ws);
-}
-
-
-static struct llvmpipe_winsys *
-xlib_create_llvmpipe_winsys( void )
-{
-   struct xmesa_llvmpipe_winsys *ws;
-
-   ws = CALLOC_STRUCT(xmesa_llvmpipe_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;
-}
+#if defined(GALLIUM_LLVMPIPE)
 
+#include "llvmpipe/lp_texture.h"
+#include "llvmpipe/lp_winsys.h"
+#include "state_tracker/sw_winsys.h"
 
 static struct pipe_screen *
 xlib_create_llvmpipe_screen( void )
@@ -401,7 +50,7 @@ xlib_create_llvmpipe_screen( void )
    struct llvmpipe_winsys *winsys;
    struct pipe_screen *screen;
 
-   winsys = xlib_create_llvmpipe_winsys();
+   winsys = xlib_create_sw_winsys();
    if (winsys == NULL)
       return NULL;
 
@@ -427,7 +76,7 @@ xlib_llvmpipe_display_surface(struct xmesa_buffer *xm_buffer,
 
    assert(texture->dt);
    if (texture->dt)
-      xm_llvmpipe_display(xm_buffer, texture->dt);
+      xlib_sw_display(xm_buffer, texture->dt);
 }