libX11 libxtrans mesa xserver git update 17 dec 2011

1 files changed, 471 insertions, 459 deletions

diff --git a/mesalib/src/gallium/auxiliary/util/u_inlines.h b/mesalib/src/gallium/auxiliary/util/u_inlines.h
index ad47439d0..44283909a 100644
--- a/mesalib/src/gallium/auxiliary/util/u_inlines.h
+++ b/mesalib/src/gallium/auxiliary/util/u_inlines.h
@@ -1,459 +1,471 @@
-/**************************************************************************

- * 

- * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.

- * 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 above copyright notice and this permission notice (including the

- * next paragraph) shall be included in all copies or substantial portions

- * of the Software.

- * 

- * 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 TUNGSTEN GRAPHICS 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.

- * 

- **************************************************************************/

-

-#ifndef U_INLINES_H

-#define U_INLINES_H

-

-#include "pipe/p_context.h"

-#include "pipe/p_defines.h"

-#include "pipe/p_state.h"

-#include "pipe/p_screen.h"

-#include "util/u_debug.h"

-#include "util/u_debug_describe.h"

-#include "util/u_debug_refcnt.h"

-#include "util/u_atomic.h"

-#include "util/u_box.h"

-#include "util/u_math.h"

-

-

-#ifdef __cplusplus

-extern "C" {

-#endif

-

-

-/*

- * Reference counting helper functions.

- */

-

-

-static INLINE void

-pipe_reference_init(struct pipe_reference *reference, unsigned count)

-{

-   p_atomic_set(&reference->count, count);

-}

-

-static INLINE boolean

-pipe_is_referenced(struct pipe_reference *reference)

-{

-   return p_atomic_read(&reference->count) != 0;

-}

-

-/**

- * Update reference counting.

- * The old thing pointed to, if any, will be unreferenced.

- * Both 'ptr' and 'reference' may be NULL.

- * \return TRUE if the object's refcount hits zero and should be destroyed.

- */

-static INLINE boolean

-pipe_reference_described(struct pipe_reference *ptr, 

-                         struct pipe_reference *reference, 

-                         debug_reference_descriptor get_desc)

-{

-   boolean destroy = FALSE;

-

-   if(ptr != reference) {

-      /* bump the reference.count first */

-      if (reference) {

-         assert(pipe_is_referenced(reference));

-         p_atomic_inc(&reference->count);

-         debug_reference(reference, get_desc, 1);

-      }

-

-      if (ptr) {

-         assert(pipe_is_referenced(ptr));

-         if (p_atomic_dec_zero(&ptr->count)) {

-            destroy = TRUE;

-         }

-         debug_reference(ptr, get_desc, -1);

-      }

-   }

-

-   return destroy;

-}

-

-static INLINE boolean

-pipe_reference(struct pipe_reference *ptr, struct pipe_reference *reference)

-{

-   return pipe_reference_described(ptr, reference, 

-                                   (debug_reference_descriptor)debug_describe_reference);

-}

-

-static INLINE void

-pipe_surface_reference(struct pipe_surface **ptr, struct pipe_surface *surf)

-{

-   struct pipe_surface *old_surf = *ptr;

-

-   if (pipe_reference_described(&(*ptr)->reference, &surf->reference, 

-                                (debug_reference_descriptor)debug_describe_surface))

-      old_surf->context->surface_destroy(old_surf->context, old_surf);

-   *ptr = surf;

-}

-

-static INLINE void

-pipe_resource_reference(struct pipe_resource **ptr, struct pipe_resource *tex)

-{

-   struct pipe_resource *old_tex = *ptr;

-

-   if (pipe_reference_described(&(*ptr)->reference, &tex->reference, 

-                                (debug_reference_descriptor)debug_describe_resource))

-      old_tex->screen->resource_destroy(old_tex->screen, old_tex);

-   *ptr = tex;

-}

-

-static INLINE void

-pipe_sampler_view_reference(struct pipe_sampler_view **ptr, struct pipe_sampler_view *view)

-{

-   struct pipe_sampler_view *old_view = *ptr;

-

-   if (pipe_reference_described(&(*ptr)->reference, &view->reference,

-                                (debug_reference_descriptor)debug_describe_sampler_view))

-      old_view->context->sampler_view_destroy(old_view->context, old_view);

-   *ptr = view;

-}

-

-static INLINE void

-pipe_surface_reset(struct pipe_context *ctx, struct pipe_surface* ps,

-                   struct pipe_resource *pt, unsigned level, unsigned layer,

-                   unsigned flags)

-{

-   pipe_resource_reference(&ps->texture, pt);

-   ps->format = pt->format;

-   ps->width = u_minify(pt->width0, level);

-   ps->height = u_minify(pt->height0, level);

-   ps->usage = flags;

-   ps->u.tex.level = level;

-   ps->u.tex.first_layer = ps->u.tex.last_layer = layer;

-   ps->context = ctx;

-}

-

-static INLINE void

-pipe_surface_init(struct pipe_context *ctx, struct pipe_surface* ps,

-                  struct pipe_resource *pt, unsigned level, unsigned layer,

-                  unsigned flags)

-{

-   ps->texture = 0;

-   pipe_reference_init(&ps->reference, 1);

-   pipe_surface_reset(ctx, ps, pt, level, layer, flags);

-}

-

-/* Return true if the surfaces are equal. */

-static INLINE boolean

-pipe_surface_equal(struct pipe_surface *s1, struct pipe_surface *s2)

-{

-   return s1->texture == s2->texture &&

-          s1->format == s2->format &&

-          (s1->texture->target != PIPE_BUFFER ||

-           (s1->u.buf.first_element == s2->u.buf.first_element &&

-            s1->u.buf.last_element == s2->u.buf.last_element)) &&

-          (s1->texture->target == PIPE_BUFFER ||

-           (s1->u.tex.level == s2->u.tex.level &&

-            s1->u.tex.first_layer == s2->u.tex.first_layer &&

-            s1->u.tex.last_layer == s2->u.tex.last_layer));

-}

-

-/*

- * Convenience wrappers for screen buffer functions.

- */

-

-static INLINE struct pipe_resource *

-pipe_buffer_create( struct pipe_screen *screen,

-		    unsigned bind,

-		    unsigned usage,

-		    unsigned size )

-{

-   struct pipe_resource buffer;

-   memset(&buffer, 0, sizeof buffer);

-   buffer.target = PIPE_BUFFER;

-   buffer.format = PIPE_FORMAT_R8_UNORM; /* want TYPELESS or similar */

-   buffer.bind = bind;

-   buffer.usage = usage;

-   buffer.flags = 0;

-   buffer.width0 = size;

-   buffer.height0 = 1;

-   buffer.depth0 = 1;

-   buffer.array_size = 1;

-   return screen->resource_create(screen, &buffer);

-}

-

-

-static INLINE struct pipe_resource *

-pipe_user_buffer_create( struct pipe_screen *screen, void *ptr, unsigned size,

-			 unsigned usage )

-{

-   return screen->user_buffer_create(screen, ptr, size, usage);

-}

-

-static INLINE void *

-pipe_buffer_map_range(struct pipe_context *pipe,

-		      struct pipe_resource *buffer,

-		      unsigned offset,

-		      unsigned length,

-		      unsigned usage,

-		      struct pipe_transfer **transfer)

-{

-   struct pipe_box box;

-   void *map;

-

-   assert(offset < buffer->width0);

-   assert(offset + length <= buffer->width0);

-   assert(length);

-

-   u_box_1d(offset, length, &box);

-

-   *transfer = pipe->get_transfer( pipe,

-                                   buffer,

-                                   0,

-                                   usage,

-                                   &box);

-

-   if (*transfer == NULL)

-      return NULL;

-

-   map = pipe->transfer_map( pipe, *transfer );

-   if (map == NULL) {

-      pipe->transfer_destroy( pipe, *transfer );

-      *transfer = NULL;

-      return NULL;

-   }

-

-   /* Match old screen->buffer_map_range() behaviour, return pointer

-    * to where the beginning of the buffer would be:

-    */

-   return (void *)((char *)map - offset);

-}

-

-

-static INLINE void *

-pipe_buffer_map(struct pipe_context *pipe,

-                struct pipe_resource *buffer,

-                unsigned usage,

-                struct pipe_transfer **transfer)

-{

-   return pipe_buffer_map_range(pipe, buffer, 0, buffer->width0, usage, transfer);

-}

-

-

-static INLINE void

-pipe_buffer_unmap(struct pipe_context *pipe,

-                  struct pipe_transfer *transfer)

-{

-   if (transfer) {

-      pipe->transfer_unmap(pipe, transfer);

-      pipe->transfer_destroy(pipe, transfer);

-   }

-}

-

-static INLINE void

-pipe_buffer_flush_mapped_range(struct pipe_context *pipe,

-                               struct pipe_transfer *transfer,

-                               unsigned offset,

-                               unsigned length)

-{

-   struct pipe_box box;

-   int transfer_offset;

-

-   assert(length);

-   assert(transfer->box.x <= offset);

-   assert(offset + length <= transfer->box.x + transfer->box.width);

-

-   /* Match old screen->buffer_flush_mapped_range() behaviour, where

-    * offset parameter is relative to the start of the buffer, not the

-    * mapped range.

-    */

-   transfer_offset = offset - transfer->box.x;

-

-   u_box_1d(transfer_offset, length, &box);

-

-   pipe->transfer_flush_region(pipe, transfer, &box);

-}

-

-static INLINE void

-pipe_buffer_write(struct pipe_context *pipe,

-                  struct pipe_resource *buf,

-                  unsigned offset,

-                  unsigned size,

-                  const void *data)

-{

-   struct pipe_box box;

-   unsigned usage = PIPE_TRANSFER_WRITE;

-

-   if (offset == 0 && size == buf->width0) {

-      usage |= PIPE_TRANSFER_DISCARD_WHOLE_RESOURCE;

-   } else {

-      usage |= PIPE_TRANSFER_DISCARD_RANGE;

-   }

-

-   u_box_1d(offset, size, &box);

-

-   pipe->transfer_inline_write( pipe,

-                                buf,

-                                0,

-                                usage,

-                                &box,

-                                data,

-                                size,

-                                0);

-}

-

-/**

- * Special case for writing non-overlapping ranges.

- *

- * We can avoid GPU/CPU synchronization when writing range that has never

- * been written before.

- */

-static INLINE void

-pipe_buffer_write_nooverlap(struct pipe_context *pipe,

-                            struct pipe_resource *buf,

-                            unsigned offset, unsigned size,

-                            const void *data)

-{

-   struct pipe_box box;

-

-   u_box_1d(offset, size, &box);

-

-   pipe->transfer_inline_write(pipe,

-                               buf,

-                               0,

-                               (PIPE_TRANSFER_WRITE |

-                                PIPE_TRANSFER_NOOVERWRITE),

-                               &box,

-                               data,

-                               0, 0);

-}

-

-static INLINE void

-pipe_buffer_read(struct pipe_context *pipe,

-                 struct pipe_resource *buf,

-                 unsigned offset,

-                 unsigned size,

-                 void *data)

-{

-   struct pipe_transfer *src_transfer;

-   ubyte *map;

-

-   map = (ubyte *) pipe_buffer_map_range(pipe,

-					 buf,

-					 offset, size,

-					 PIPE_TRANSFER_READ,

-					 &src_transfer);

-

-   if (map)

-      memcpy(data, map + offset, size);

-

-   pipe_buffer_unmap(pipe, src_transfer);

-}

-

-static INLINE struct pipe_transfer *

-pipe_get_transfer( struct pipe_context *context,

-                   struct pipe_resource *resource,

-                   unsigned level, unsigned layer,

-                   enum pipe_transfer_usage usage,

-                   unsigned x, unsigned y,

-                   unsigned w, unsigned h)

-{

-   struct pipe_box box;

-   u_box_2d_zslice( x, y, layer, w, h, &box );

-   return context->get_transfer( context,

-                                 resource,

-                                 level,

-                                 usage,

-                                 &box );

-}

-

-static INLINE void *

-pipe_transfer_map( struct pipe_context *context,

-                   struct pipe_transfer *transfer )

-{

-   return context->transfer_map( context, transfer );

-}

-

-static INLINE void

-pipe_transfer_unmap( struct pipe_context *context,

-                     struct pipe_transfer *transfer )

-{

-   context->transfer_unmap( context, transfer );

-}

-

-

-static INLINE void

-pipe_transfer_destroy( struct pipe_context *context, 

-                       struct pipe_transfer *transfer )

-{

-   context->transfer_destroy(context, transfer);

-}

-

-

-static INLINE boolean util_get_offset( 

-   const struct pipe_rasterizer_state *templ,

-   unsigned fill_mode)

-{

-   switch(fill_mode) {

-   case PIPE_POLYGON_MODE_POINT:

-      return templ->offset_point;

-   case PIPE_POLYGON_MODE_LINE:

-      return templ->offset_line;

-   case PIPE_POLYGON_MODE_FILL:

-      return templ->offset_tri;

-   default:

-      assert(0);

-      return FALSE;

-   }

-}

-

-/**

- * This function is used to copy an array of pipe_vertex_buffer structures,

- * while properly referencing the pipe_vertex_buffer::buffer member.

- *

- * \sa util_copy_framebuffer_state

- */

-static INLINE void util_copy_vertex_buffers(struct pipe_vertex_buffer *dst,

-                                            unsigned *dst_count,

-                                            const struct pipe_vertex_buffer *src,

-                                            unsigned src_count)

-{

-   unsigned i;

-

-   /* Reference the buffers of 'src' in 'dst'. */

-   for (i = 0; i < src_count; i++) {

-      pipe_resource_reference(&dst[i].buffer, src[i].buffer);

-   }

-   /* Unreference the rest of the buffers in 'dst'. */

-   for (; i < *dst_count; i++) {

-      pipe_resource_reference(&dst[i].buffer, NULL);

-   }

-

-   /* Update the size of 'dst' and copy over the other members

-    * of pipe_vertex_buffer. */

-   *dst_count = src_count;

-   memcpy(dst, src, src_count * sizeof(struct pipe_vertex_buffer));

-}

-

-#ifdef __cplusplus

-}

-#endif

-

-#endif /* U_INLINES_H */

+/**************************************************************************
+ * 
+ * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * 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 above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ * 
+ * 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 TUNGSTEN GRAPHICS 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.
+ * 
+ **************************************************************************/
+
+#ifndef U_INLINES_H
+#define U_INLINES_H
+
+#include "pipe/p_context.h"
+#include "pipe/p_defines.h"
+#include "pipe/p_state.h"
+#include "pipe/p_screen.h"
+#include "util/u_debug.h"
+#include "util/u_debug_describe.h"
+#include "util/u_debug_refcnt.h"
+#include "util/u_atomic.h"
+#include "util/u_box.h"
+#include "util/u_math.h"
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+/*
+ * Reference counting helper functions.
+ */
+
+
+static INLINE void
+pipe_reference_init(struct pipe_reference *reference, unsigned count)
+{
+   p_atomic_set(&reference->count, count);
+}
+
+static INLINE boolean
+pipe_is_referenced(struct pipe_reference *reference)
+{
+   return p_atomic_read(&reference->count) != 0;
+}
+
+/**
+ * Update reference counting.
+ * The old thing pointed to, if any, will be unreferenced.
+ * Both 'ptr' and 'reference' may be NULL.
+ * \return TRUE if the object's refcount hits zero and should be destroyed.
+ */
+static INLINE boolean
+pipe_reference_described(struct pipe_reference *ptr, 
+                         struct pipe_reference *reference, 
+                         debug_reference_descriptor get_desc)
+{
+   boolean destroy = FALSE;
+
+   if(ptr != reference) {
+      /* bump the reference.count first */
+      if (reference) {
+         assert(pipe_is_referenced(reference));
+         p_atomic_inc(&reference->count);
+         debug_reference(reference, get_desc, 1);
+      }
+
+      if (ptr) {
+         assert(pipe_is_referenced(ptr));
+         if (p_atomic_dec_zero(&ptr->count)) {
+            destroy = TRUE;
+         }
+         debug_reference(ptr, get_desc, -1);
+      }
+   }
+
+   return destroy;
+}
+
+static INLINE boolean
+pipe_reference(struct pipe_reference *ptr, struct pipe_reference *reference)
+{
+   return pipe_reference_described(ptr, reference, 
+                                   (debug_reference_descriptor)debug_describe_reference);
+}
+
+static INLINE void
+pipe_surface_reference(struct pipe_surface **ptr, struct pipe_surface *surf)
+{
+   struct pipe_surface *old_surf = *ptr;
+
+   if (pipe_reference_described(&(*ptr)->reference, &surf->reference, 
+                                (debug_reference_descriptor)debug_describe_surface))
+      old_surf->context->surface_destroy(old_surf->context, old_surf);
+   *ptr = surf;
+}
+
+static INLINE void
+pipe_resource_reference(struct pipe_resource **ptr, struct pipe_resource *tex)
+{
+   struct pipe_resource *old_tex = *ptr;
+
+   if (pipe_reference_described(&(*ptr)->reference, &tex->reference, 
+                                (debug_reference_descriptor)debug_describe_resource))
+      old_tex->screen->resource_destroy(old_tex->screen, old_tex);
+   *ptr = tex;
+}
+
+static INLINE void
+pipe_sampler_view_reference(struct pipe_sampler_view **ptr, struct pipe_sampler_view *view)
+{
+   struct pipe_sampler_view *old_view = *ptr;
+
+   if (pipe_reference_described(&(*ptr)->reference, &view->reference,
+                                (debug_reference_descriptor)debug_describe_sampler_view))
+      old_view->context->sampler_view_destroy(old_view->context, old_view);
+   *ptr = view;
+}
+
+static INLINE void
+pipe_so_target_reference(struct pipe_stream_output_target **ptr,
+                         struct pipe_stream_output_target *target)
+{
+   struct pipe_stream_output_target *old = *ptr;
+
+   if (pipe_reference_described(&(*ptr)->reference, &target->reference,
+                     (debug_reference_descriptor)debug_describe_so_target))
+      old->context->stream_output_target_destroy(old->context, old);
+   *ptr = target;
+}
+
+static INLINE void
+pipe_surface_reset(struct pipe_context *ctx, struct pipe_surface* ps,
+                   struct pipe_resource *pt, unsigned level, unsigned layer,
+                   unsigned flags)
+{
+   pipe_resource_reference(&ps->texture, pt);
+   ps->format = pt->format;
+   ps->width = u_minify(pt->width0, level);
+   ps->height = u_minify(pt->height0, level);
+   ps->usage = flags;
+   ps->u.tex.level = level;
+   ps->u.tex.first_layer = ps->u.tex.last_layer = layer;
+   ps->context = ctx;
+}
+
+static INLINE void
+pipe_surface_init(struct pipe_context *ctx, struct pipe_surface* ps,
+                  struct pipe_resource *pt, unsigned level, unsigned layer,
+                  unsigned flags)
+{
+   ps->texture = 0;
+   pipe_reference_init(&ps->reference, 1);
+   pipe_surface_reset(ctx, ps, pt, level, layer, flags);
+}
+
+/* Return true if the surfaces are equal. */
+static INLINE boolean
+pipe_surface_equal(struct pipe_surface *s1, struct pipe_surface *s2)
+{
+   return s1->texture == s2->texture &&
+          s1->format == s2->format &&
+          (s1->texture->target != PIPE_BUFFER ||
+           (s1->u.buf.first_element == s2->u.buf.first_element &&
+            s1->u.buf.last_element == s2->u.buf.last_element)) &&
+          (s1->texture->target == PIPE_BUFFER ||
+           (s1->u.tex.level == s2->u.tex.level &&
+            s1->u.tex.first_layer == s2->u.tex.first_layer &&
+            s1->u.tex.last_layer == s2->u.tex.last_layer));
+}
+
+/*
+ * Convenience wrappers for screen buffer functions.
+ */
+
+static INLINE struct pipe_resource *
+pipe_buffer_create( struct pipe_screen *screen,
+		    unsigned bind,
+		    unsigned usage,
+		    unsigned size )
+{
+   struct pipe_resource buffer;
+   memset(&buffer, 0, sizeof buffer);
+   buffer.target = PIPE_BUFFER;
+   buffer.format = PIPE_FORMAT_R8_UNORM; /* want TYPELESS or similar */
+   buffer.bind = bind;
+   buffer.usage = usage;
+   buffer.flags = 0;
+   buffer.width0 = size;
+   buffer.height0 = 1;
+   buffer.depth0 = 1;
+   buffer.array_size = 1;
+   return screen->resource_create(screen, &buffer);
+}
+
+
+static INLINE struct pipe_resource *
+pipe_user_buffer_create( struct pipe_screen *screen, void *ptr, unsigned size,
+			 unsigned usage )
+{
+   return screen->user_buffer_create(screen, ptr, size, usage);
+}
+
+static INLINE void *
+pipe_buffer_map_range(struct pipe_context *pipe,
+		      struct pipe_resource *buffer,
+		      unsigned offset,
+		      unsigned length,
+		      unsigned usage,
+		      struct pipe_transfer **transfer)
+{
+   struct pipe_box box;
+   void *map;
+
+   assert(offset < buffer->width0);
+   assert(offset + length <= buffer->width0);
+   assert(length);
+
+   u_box_1d(offset, length, &box);
+
+   *transfer = pipe->get_transfer( pipe,
+                                   buffer,
+                                   0,
+                                   usage,
+                                   &box);
+
+   if (*transfer == NULL)
+      return NULL;
+
+   map = pipe->transfer_map( pipe, *transfer );
+   if (map == NULL) {
+      pipe->transfer_destroy( pipe, *transfer );
+      *transfer = NULL;
+      return NULL;
+   }
+
+   /* Match old screen->buffer_map_range() behaviour, return pointer
+    * to where the beginning of the buffer would be:
+    */
+   return (void *)((char *)map - offset);
+}
+
+
+static INLINE void *
+pipe_buffer_map(struct pipe_context *pipe,
+                struct pipe_resource *buffer,
+                unsigned usage,
+                struct pipe_transfer **transfer)
+{
+   return pipe_buffer_map_range(pipe, buffer, 0, buffer->width0, usage, transfer);
+}
+
+
+static INLINE void
+pipe_buffer_unmap(struct pipe_context *pipe,
+                  struct pipe_transfer *transfer)
+{
+   if (transfer) {
+      pipe->transfer_unmap(pipe, transfer);
+      pipe->transfer_destroy(pipe, transfer);
+   }
+}
+
+static INLINE void
+pipe_buffer_flush_mapped_range(struct pipe_context *pipe,
+                               struct pipe_transfer *transfer,
+                               unsigned offset,
+                               unsigned length)
+{
+   struct pipe_box box;
+   int transfer_offset;
+
+   assert(length);
+   assert(transfer->box.x <= offset);
+   assert(offset + length <= transfer->box.x + transfer->box.width);
+
+   /* Match old screen->buffer_flush_mapped_range() behaviour, where
+    * offset parameter is relative to the start of the buffer, not the
+    * mapped range.
+    */
+   transfer_offset = offset - transfer->box.x;
+
+   u_box_1d(transfer_offset, length, &box);
+
+   pipe->transfer_flush_region(pipe, transfer, &box);
+}
+
+static INLINE void
+pipe_buffer_write(struct pipe_context *pipe,
+                  struct pipe_resource *buf,
+                  unsigned offset,
+                  unsigned size,
+                  const void *data)
+{
+   struct pipe_box box;
+   unsigned usage = PIPE_TRANSFER_WRITE;
+
+   if (offset == 0 && size == buf->width0) {
+      usage |= PIPE_TRANSFER_DISCARD_WHOLE_RESOURCE;
+   } else {
+      usage |= PIPE_TRANSFER_DISCARD_RANGE;
+   }
+
+   u_box_1d(offset, size, &box);
+
+   pipe->transfer_inline_write( pipe,
+                                buf,
+                                0,
+                                usage,
+                                &box,
+                                data,
+                                size,
+                                0);
+}
+
+/**
+ * Special case for writing non-overlapping ranges.
+ *
+ * We can avoid GPU/CPU synchronization when writing range that has never
+ * been written before.
+ */
+static INLINE void
+pipe_buffer_write_nooverlap(struct pipe_context *pipe,
+                            struct pipe_resource *buf,
+                            unsigned offset, unsigned size,
+                            const void *data)
+{
+   struct pipe_box box;
+
+   u_box_1d(offset, size, &box);
+
+   pipe->transfer_inline_write(pipe,
+                               buf,
+                               0,
+                               (PIPE_TRANSFER_WRITE |
+                                PIPE_TRANSFER_NOOVERWRITE),
+                               &box,
+                               data,
+                               0, 0);
+}
+
+static INLINE void
+pipe_buffer_read(struct pipe_context *pipe,
+                 struct pipe_resource *buf,
+                 unsigned offset,
+                 unsigned size,
+                 void *data)
+{
+   struct pipe_transfer *src_transfer;
+   ubyte *map;
+
+   map = (ubyte *) pipe_buffer_map_range(pipe,
+					 buf,
+					 offset, size,
+					 PIPE_TRANSFER_READ,
+					 &src_transfer);
+
+   if (map)
+      memcpy(data, map + offset, size);
+
+   pipe_buffer_unmap(pipe, src_transfer);
+}
+
+static INLINE struct pipe_transfer *
+pipe_get_transfer( struct pipe_context *context,
+                   struct pipe_resource *resource,
+                   unsigned level, unsigned layer,
+                   enum pipe_transfer_usage usage,
+                   unsigned x, unsigned y,
+                   unsigned w, unsigned h)
+{
+   struct pipe_box box;
+   u_box_2d_zslice( x, y, layer, w, h, &box );
+   return context->get_transfer( context,
+                                 resource,
+                                 level,
+                                 usage,
+                                 &box );
+}
+
+static INLINE void *
+pipe_transfer_map( struct pipe_context *context,
+                   struct pipe_transfer *transfer )
+{
+   return context->transfer_map( context, transfer );
+}
+
+static INLINE void
+pipe_transfer_unmap( struct pipe_context *context,
+                     struct pipe_transfer *transfer )
+{
+   context->transfer_unmap( context, transfer );
+}
+
+
+static INLINE void
+pipe_transfer_destroy( struct pipe_context *context, 
+                       struct pipe_transfer *transfer )
+{
+   context->transfer_destroy(context, transfer);
+}
+
+
+static INLINE boolean util_get_offset( 
+   const struct pipe_rasterizer_state *templ,
+   unsigned fill_mode)
+{
+   switch(fill_mode) {
+   case PIPE_POLYGON_MODE_POINT:
+      return templ->offset_point;
+   case PIPE_POLYGON_MODE_LINE:
+      return templ->offset_line;
+   case PIPE_POLYGON_MODE_FILL:
+      return templ->offset_tri;
+   default:
+      assert(0);
+      return FALSE;
+   }
+}
+
+/**
+ * This function is used to copy an array of pipe_vertex_buffer structures,
+ * while properly referencing the pipe_vertex_buffer::buffer member.
+ *
+ * \sa util_copy_framebuffer_state
+ */
+static INLINE void util_copy_vertex_buffers(struct pipe_vertex_buffer *dst,
+                                            unsigned *dst_count,
+                                            const struct pipe_vertex_buffer *src,
+                                            unsigned src_count)
+{
+   unsigned i;
+
+   /* Reference the buffers of 'src' in 'dst'. */
+   for (i = 0; i < src_count; i++) {
+      pipe_resource_reference(&dst[i].buffer, src[i].buffer);
+   }
+   /* Unreference the rest of the buffers in 'dst'. */
+   for (; i < *dst_count; i++) {
+      pipe_resource_reference(&dst[i].buffer, NULL);
+   }
+
+   /* Update the size of 'dst' and copy over the other members
+    * of pipe_vertex_buffer. */
+   *dst_count = src_count;
+   memcpy(dst, src, src_count * sizeof(struct pipe_vertex_buffer));
+}
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* U_INLINES_H */