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, 17 insertions, 447 deletions

diff --git a/src/gallium/winsys/xlib/xlib_softpipe.c b/src/gallium/winsys/xlib/xlib_softpipe.c
index 716338aef47..df93de551cc 100644
--- a/src/gallium/winsys/xlib/xlib_softpipe.c
+++ b/src/gallium/winsys/xlib/xlib_softpipe.c
@@ -26,461 +26,19 @@
  * 
  **************************************************************************/
 
-/*
- * Authors:
- *   Keith Whitwell
- *   Brian Paul
- */
-
-
-#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 "softpipe/sp_winsys.h"
-#include "softpipe/sp_texture.h"
 
 #include "xlib.h"
-
-/**
- * Subclass of pipe_buffer for Xlib winsys.
- * Low-level OS/window system memory buffer
- */
-struct xm_buffer
-{
-   struct pipe_buffer base;
-   boolean userBuffer;  /** Is this a user-space buffer? */
-   void *data;
-   void *mapped;
-
-   XImage *tempImage;
-#ifdef USE_XSHM
-   boolean shm;         /** Is this a shared memory buffer? */
-   XShmSegmentInfo shminfo;
-#endif
-};
-
-
-/**
- * Subclass of pipe_winsys for Xlib winsys
- */
-struct xmesa_pipe_winsys
-{
-   struct pipe_winsys base;
-/*   struct xmesa_visual *xm_visual; */
-};
-
-
-
-/** Cast wrapper */
-static INLINE struct xm_buffer *
-xm_buffer( struct pipe_buffer *buf )
-{
-   return (struct xm_buffer *)buf;
-}
-
-
-/**
- * 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_buffer *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_buffer *b, 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 *);
-
-   b->tempImage = XShmCreateImage(xmb->xm_visual->display,
-                                  xmb->xm_visual->visinfo->visual,
-                                  xmb->xm_visual->visinfo->depth,
-                                  ZPixmap,
-                                  NULL,
-                                  &b->shminfo,
-                                  width, height);
-   if (b->tempImage == NULL) {
-      b->shm = FALSE;
-      return;
-   }
-
-
-   mesaXErrorFlag = 0;
-   old_handler = XSetErrorHandler(mesaHandleXError);
-   /* This may trigger the X protocol error we're ready to catch: */
-   XShmAttach(xmb->xm_visual->display, &b->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(b->tempImage);
-      b->tempImage = NULL;
-      b->shm = FALSE;
-      (void) XSetErrorHandler(old_handler);
-      return;
-   }
-
-   b->shm = TRUE;
-}
-
-#endif /* USE_XSHM */
-
-
-
-/* Most callbacks map direcly onto dri_bufmgr operations:
- */
-static void *
-xm_buffer_map(struct pipe_winsys *pws, struct pipe_buffer *buf,
-              unsigned flags)
-{
-   struct xm_buffer *xm_buf = xm_buffer(buf);
-   xm_buf->mapped = xm_buf->data;
-   return xm_buf->mapped;
-}
-
-static void
-xm_buffer_unmap(struct pipe_winsys *pws, struct pipe_buffer *buf)
-{
-   struct xm_buffer *xm_buf = xm_buffer(buf);
-   xm_buf->mapped = NULL;
-}
-
-static void
-xm_buffer_destroy(struct pipe_buffer *buf)
-{
-   struct xm_buffer *oldBuf = xm_buffer(buf);
-
-   /*
-    * Note oldBuf->data may point to one of three things:
-    * 1. XShm shared memory image data
-    * 2. User-provided (wrapped) memory, see xm_user_buffer_create()
-    * 3. Regular, malloc'd memory
-    * We need to be careful with freeing that data now.
-    */
-
-   if (oldBuf->data) {
-#ifdef USE_XSHM
-      if (oldBuf->shminfo.shmid >= 0) {
-         shmdt(oldBuf->shminfo.shmaddr);
-         shmctl(oldBuf->shminfo.shmid, IPC_RMID, 0);
-         
-         oldBuf->shminfo.shmid = -1;
-         oldBuf->shminfo.shmaddr = (char *) -1;
-      }
-
-      if (oldBuf->shm) {
-         oldBuf->data = NULL;
-      }
-
-      if (oldBuf->tempImage) {
-         XDestroyImage(oldBuf->tempImage);
-         oldBuf->tempImage = NULL;
-      }
-#endif
-
-      if (oldBuf->data && !oldBuf->userBuffer) {
-         /* this was regular malloc'd memory */
-         align_free(oldBuf->data);
-      }
-
-      oldBuf->data = NULL;
-   }
-
-   free(oldBuf);
-}
-
-
-/**
- * Display/copy the image in the surface into the X window specified
- * by the XMesaBuffer.
- */
-static void
-xlib_softpipe_display_surface(struct xmesa_buffer *b,
-                              struct pipe_surface *surf)
-{
-   XImage *ximage;
-   struct softpipe_texture *spt = softpipe_texture(surf->texture);
-   struct xm_buffer *xm_buf = xm_buffer(spt->buffer);
-   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_buf->shm)
-   {
-      if (xm_buf->tempImage == NULL) 
-      {
-         assert(util_format_get_blockwidth(surf->texture->format) == 1);
-         assert(util_format_get_blockheight(surf->texture->format) == 1);
-         alloc_shm_ximage(xm_buf, b, spt->stride[surf->level] /
-                          util_format_get_blocksize(surf->texture->format), surf->height);
-      }
-
-      ximage = xm_buf->tempImage;
-      ximage->data = xm_buf->data;
-
-      /* _debug_printf("XSHM\n"); */
-      XShmPutImage(b->xm_visual->display, b->drawable, b->gc,
-                   ximage, 0, 0, 0, 0, surf->width, surf->height, False);
-   }
-   else
-#endif
-   {
-      /* display image in Window */
-      ximage = b->tempImage;
-      ximage->data = xm_buf->data;
-
-      /* check that the XImage has been previously initialized */
-      assert(ximage->format);
-      assert(ximage->bitmap_unit);
-
-      /* update XImage's fields */
-      ximage->width = surf->width;
-      ximage->height = surf->height;
-      ximage->bytes_per_line = spt->stride[surf->level];
-
-      /* _debug_printf("XPUT\n"); */
-      XPutImage(b->xm_visual->display, b->drawable, b->gc,
-                ximage, 0, 0, 0, 0, surf->width, surf->height);
-   }
-}
-
-
-static void
-xm_flush_frontbuffer(struct pipe_winsys *pws,
-                     struct pipe_surface *surf,
-                     void *context_private)
-{
-   /*
-    * The front color buffer is actually just another XImage buffer.
-    * This function copies that XImage to the actual X Window.
-    */
-   XMesaContext xmctx = (XMesaContext) context_private;
-   xlib_softpipe_display_surface(xmctx->xm_buffer, surf);
-   xmesa_check_and_update_buffer_size(xmctx, xmctx->xm_buffer);
-}
-
-
-
-static const char *
-xm_get_name(struct pipe_winsys *pws)
-{
-   return "Xlib";
-}
-
-
-static struct pipe_buffer *
-xm_buffer_create(struct pipe_winsys *pws, 
-                 unsigned alignment, 
-                 unsigned usage,
-                 unsigned size)
-{
-   struct xm_buffer *buffer = CALLOC_STRUCT(xm_buffer);
-
-   pipe_reference_init(&buffer->base.reference, 1);
-   buffer->base.alignment = alignment;
-   buffer->base.usage = usage;
-   buffer->base.size = size;
-
-   /* align to 16-byte multiple for Cell */
-   buffer->data = align_malloc(size, max(alignment, 16));
-
-   return &buffer->base;
-}
-
-
-/**
- * Create buffer which wraps user-space data.
- */
-static struct pipe_buffer *
-xm_user_buffer_create(struct pipe_winsys *pws, void *ptr, unsigned bytes)
-{
-   struct xm_buffer *buffer = CALLOC_STRUCT(xm_buffer);
-   pipe_reference_init(&buffer->base.reference, 1);
-   buffer->base.size = bytes;
-   buffer->userBuffer = TRUE;
-   buffer->data = ptr;
-
-   return &buffer->base;
-}
-
-
-static struct pipe_buffer *
-xm_surface_buffer_create(struct pipe_winsys *winsys,
-                         unsigned width, unsigned height,
-                         enum pipe_format format,
-                         unsigned usage,
-                         unsigned tex_usage,
-                         unsigned *stride)
-{
-   const unsigned alignment = 64;
-   unsigned nblocksy, size;
-
-   nblocksy = util_format_get_nblocksy(format, height);
-   *stride = align(util_format_get_stride(format, width), alignment);
-   size = *stride * nblocksy;
-
-#ifdef USE_XSHM
-   if (!debug_get_bool_option("XLIB_NO_SHM", FALSE))
-   {
-      struct xm_buffer *buffer = CALLOC_STRUCT(xm_buffer);
-
-      pipe_reference_init(&buffer->base.reference, 1);
-      buffer->base.alignment = alignment;
-      buffer->base.usage = usage;
-      buffer->base.size = size;
-      buffer->userBuffer = FALSE;
-      buffer->shminfo.shmid = -1;
-      buffer->shminfo.shmaddr = (char *) -1;
-      buffer->shm = TRUE;
-         
-      buffer->data = alloc_shm(buffer, size);
-      if (!buffer->data)
-         goto out;
-
-      return &buffer->base;
-         
-   out:
-      if (buffer)
-         FREE(buffer);
-   }
-#endif
-   
-
-   return winsys->buffer_create(winsys, alignment,
-                                usage,
-                                size);
-}
-
-
-/*
- * Fence functions - basically nothing to do, as we don't create any actual
- * fence objects.
- */
-
-static void
-xm_fence_reference(struct pipe_winsys *sws, struct pipe_fence_handle **ptr,
-                   struct pipe_fence_handle *fence)
-{
-}
-
-
-static int
-xm_fence_signalled(struct pipe_winsys *sws, struct pipe_fence_handle *fence,
-                   unsigned flag)
-{
-   return 0;
-}
-
-
-static int
-xm_fence_finish(struct pipe_winsys *sws, struct pipe_fence_handle *fence,
-                unsigned flag)
-{
-   return 0;
-}
-
-
-
-static struct pipe_winsys *
-xlib_create_softpipe_winsys( void )
-{
-   static struct xmesa_pipe_winsys *ws = NULL;
-
-   if (!ws) {
-      ws = CALLOC_STRUCT(xmesa_pipe_winsys);
-
-      /* Fill in this struct with callbacks that pipe will need to
-       * communicate with the window system, buffer manager, etc. 
-       */
-      ws->base.buffer_create = xm_buffer_create;
-      ws->base.user_buffer_create = xm_user_buffer_create;
-      ws->base.buffer_map = xm_buffer_map;
-      ws->base.buffer_unmap = xm_buffer_unmap;
-      ws->base.buffer_destroy = xm_buffer_destroy;
-
-      ws->base.surface_buffer_create = xm_surface_buffer_create;
-
-      ws->base.fence_reference = xm_fence_reference;
-      ws->base.fence_signalled = xm_fence_signalled;
-      ws->base.fence_finish = xm_fence_finish;
-
-      ws->base.flush_frontbuffer = xm_flush_frontbuffer;
-      ws->base.get_name = xm_get_name;
-   }
-
-   return &ws->base;
-}
-
+#include "softpipe/sp_texture.h"
+#include "softpipe/sp_screen.h"
+#include "state_tracker/sw_winsys.h"
 
 static struct pipe_screen *
 xlib_create_softpipe_screen( void )
 {
-   struct pipe_winsys *winsys;
+   struct sw_winsys *winsys;
    struct pipe_screen *screen;
 
-   winsys = xlib_create_softpipe_winsys();
+   winsys = xlib_create_sw_winsys();
    if (winsys == NULL)
       return NULL;
 
@@ -498,6 +56,18 @@ fail:
 }
 
 
+static void
+xlib_softpipe_display_surface(struct xmesa_buffer *xm_buffer,
+                              struct pipe_surface *surf)
+{
+   struct softpipe_texture *texture = softpipe_texture(surf->texture);
+
+   assert(texture->dt);
+   if (texture->dt)
+      xlib_sw_display(xm_buffer, texture->dt);
+}
+
+
 struct xm_driver xlib_softpipe_driver = 
 {
    .create_pipe_screen = xlib_create_softpipe_screen,