Merge commit 'origin/gallium-0.1' into gallium-0.2

Conflicts:

	src/gallium/winsys/gdi/SConscript

24 files changed, 229 insertions, 722 deletions

diff --git a/src/gallium/auxiliary/draw/draw_pipe_offset.c b/src/gallium/auxiliary/draw/draw_pipe_offset.c
index 8ddc4ee6178..62c31532d01 100644
--- a/src/gallium/auxiliary/draw/draw_pipe_offset.c
+++ b/src/gallium/auxiliary/draw/draw_pipe_offset.c
@@ -123,7 +123,7 @@ static void offset_first_tri( struct draw_stage *stage,
 {
    struct offset_stage *offset = offset_stage(stage);
 
-   offset->units = stage->draw->rasterizer->offset_units * stage->draw->mrd;
+   offset->units = (float) (stage->draw->rasterizer->offset_units * stage->draw->mrd);
    offset->scale = stage->draw->rasterizer->offset_scale;
 
    stage->tri = offset_tri;
diff --git a/src/gallium/auxiliary/pipebuffer/Makefile b/src/gallium/auxiliary/pipebuffer/Makefile
index 4bcf08f8a53..f9b39d9ce0a 100644
--- a/src/gallium/auxiliary/pipebuffer/Makefile
+++ b/src/gallium/auxiliary/pipebuffer/Makefile
@@ -11,7 +11,6 @@ C_SOURCES = \
 	pb_bufmgr_debug.c \
 	pb_bufmgr_fenced.c \
 	pb_bufmgr_mm.c \
-	pb_bufmgr_ondemand.c \
 	pb_bufmgr_pool.c \
 	pb_bufmgr_slab.c \
 	pb_validate.c \
diff --git a/src/gallium/auxiliary/pipebuffer/SConscript b/src/gallium/auxiliary/pipebuffer/SConscript
index 4acf7218083..56a40dda0d4 100644
--- a/src/gallium/auxiliary/pipebuffer/SConscript
+++ b/src/gallium/auxiliary/pipebuffer/SConscript
@@ -10,7 +10,6 @@ pipebuffer = env.ConvenienceLibrary(
 		'pb_bufmgr_debug.c',
 		'pb_bufmgr_fenced.c',
 		'pb_bufmgr_mm.c',
-		'pb_bufmgr_ondemand.c',
 		'pb_bufmgr_pool.c',
 		'pb_bufmgr_slab.c',
 		'pb_validate.c',
diff --git a/src/gallium/auxiliary/pipebuffer/pb_buffer.h b/src/gallium/auxiliary/pipebuffer/pb_buffer.h
index dd22ef34ecc..4f1a8a38942 100644
--- a/src/gallium/auxiliary/pipebuffer/pb_buffer.h
+++ b/src/gallium/auxiliary/pipebuffer/pb_buffer.h
@@ -37,7 +37,7 @@
  * There is no obligation of a winsys driver to use this library. And a pipe
  * driver should be completly agnostic about it.
  * 
- * \author Jose Fonseca <[email protected]>
+ * \author Jos� Fonseca <[email protected]>
  */
 
 #ifndef PB_BUFFER_H_
@@ -46,7 +46,6 @@
 
 #include "pipe/p_compiler.h"
 #include "pipe/p_debug.h"
-#include "pipe/p_error.h"
 #include "pipe/p_state.h"
 #include "pipe/p_inlines.h"
 
@@ -57,8 +56,6 @@ extern "C" {
 
 
 struct pb_vtbl;
-struct pb_validate;
-
 
 /**
  * Buffer description.
@@ -107,13 +104,6 @@ struct pb_vtbl
    
    void (*unmap)( struct pb_buffer *buf );
 
-   enum pipe_error (*validate)( struct pb_buffer *buf, 
-                                struct pb_validate *vl,
-                                unsigned flags );
-
-   void (*fence)( struct pb_buffer *buf, 
-                  struct pipe_fence_handle *fence );
-
    /**
     * Get the base buffer and the offset.
     * 
@@ -128,7 +118,6 @@ struct pb_vtbl
    void (*get_base_buffer)( struct pb_buffer *buf,
                             struct pb_buffer **base_buf,
                             unsigned *offset );
-   
 };
 
 
@@ -184,33 +173,10 @@ pb_get_base_buffer( struct pb_buffer *buf,
       offset = 0;
       return;
    }
-   assert(buf->vtbl->get_base_buffer);
    buf->vtbl->get_base_buffer(buf, base_buf, offset);
 }
 
 
-static INLINE enum pipe_error 
-pb_validate(struct pb_buffer *buf, struct pb_validate *vl, unsigned flags)
-{
-   assert(buf);
-   if(!buf)
-      return PIPE_ERROR;
-   assert(buf->vtbl->validate);
-   return buf->vtbl->validate(buf, vl, flags);
-}
-
-
-static INLINE void 
-pb_fence(struct pb_buffer *buf, struct pipe_fence_handle *fence)
-{
-   assert(buf);
-   if(!buf)
-      return;
-   assert(buf->vtbl->fence);
-   buf->vtbl->fence(buf, fence);
-}
-
-
 static INLINE void 
 pb_destroy(struct pb_buffer *buf)
 {
diff --git a/src/gallium/auxiliary/pipebuffer/pb_buffer_fenced.c b/src/gallium/auxiliary/pipebuffer/pb_buffer_fenced.c
index 17300cb553c..17b27810520 100644
--- a/src/gallium/auxiliary/pipebuffer/pb_buffer_fenced.c
+++ b/src/gallium/auxiliary/pipebuffer/pb_buffer_fenced.c
@@ -29,7 +29,7 @@
  * \file
  * Implementation of fenced buffers.
  * 
- * \author Jose Fonseca <jrfonseca-at-tungstengraphics-dot-com>
+ * \author José Fonseca <jrfonseca-at-tungstengraphics-dot-com>
  * \author Thomas Hellström <thomas-at-tungstengraphics-dot-com>
  */
 
@@ -59,6 +59,13 @@
  */
 #define SUPER(__derived) (&(__derived)->base)
 
+#define PIPE_BUFFER_USAGE_CPU_READ_WRITE \
+   ( PIPE_BUFFER_USAGE_CPU_READ | PIPE_BUFFER_USAGE_CPU_WRITE )
+#define PIPE_BUFFER_USAGE_GPU_READ_WRITE \
+   ( PIPE_BUFFER_USAGE_GPU_READ | PIPE_BUFFER_USAGE_GPU_WRITE )
+#define PIPE_BUFFER_USAGE_WRITE \
+   ( PIPE_BUFFER_USAGE_CPU_WRITE | PIPE_BUFFER_USAGE_GPU_WRITE )
+
 
 struct fenced_buffer_list
 {
@@ -90,8 +97,6 @@ struct fenced_buffer
    unsigned flags;
 
    unsigned mapcount;
-   struct pb_validate *vl;
-   unsigned validation_flags;
    struct pipe_fence_handle *fence;
 
    struct list_head head;
@@ -103,6 +108,7 @@ static INLINE struct fenced_buffer *
 fenced_buffer(struct pb_buffer *buf)
 {
    assert(buf);
+   assert(buf->vtbl == &fenced_buffer_vtbl);
    return (struct fenced_buffer *)buf;
 }
 
@@ -268,7 +274,6 @@ fenced_buffer_map(struct pb_buffer *buf,
    struct fenced_buffer *fenced_buf = fenced_buffer(buf);
    void *map;
 
-   assert(flags & PIPE_BUFFER_USAGE_CPU_READ_WRITE);
    assert(!(flags & ~PIPE_BUFFER_USAGE_CPU_READ_WRITE));
    flags &= PIPE_BUFFER_USAGE_CPU_READ_WRITE;
    
@@ -310,101 +315,6 @@ fenced_buffer_unmap(struct pb_buffer *buf)
 }
 
 
-static enum pipe_error
-fenced_buffer_validate(struct pb_buffer *buf,
-                       struct pb_validate *vl,
-                       unsigned flags)
-{
-   struct fenced_buffer *fenced_buf = fenced_buffer(buf);
-   enum pipe_error ret;
-   
-   if(!vl) {
-      /* invalidate */
-      fenced_buf->vl = NULL;
-      fenced_buf->validation_flags = 0;
-      return PIPE_OK;
-   }
-   
-   assert(flags & PIPE_BUFFER_USAGE_GPU_READ_WRITE);
-   assert(!(flags & ~PIPE_BUFFER_USAGE_GPU_READ_WRITE));
-   flags &= PIPE_BUFFER_USAGE_GPU_READ_WRITE;
-
-   /* Buffer cannot be validated in two different lists */ 
-   if(fenced_buf->vl && fenced_buf->vl != vl)
-      return PIPE_ERROR_RETRY;
-   
-   /* Do not validate if buffer is still mapped */
-   if(fenced_buf->flags & PIPE_BUFFER_USAGE_CPU_READ_WRITE) {
-      /* TODO: wait for the thread that mapped the buffer to unmap it */
-      return PIPE_ERROR_RETRY;
-   }
-
-   /* Allow concurrent GPU reads, but serialize GPU writes */
-   if(fenced_buf->flags & PIPE_BUFFER_USAGE_GPU_READ_WRITE) {
-      if((fenced_buf->flags | flags) & PIPE_BUFFER_USAGE_GPU_WRITE) {
-         _fenced_buffer_finish(fenced_buf);
-      }
-   }
-
-   if(fenced_buf->vl == vl &&
-      (fenced_buf->validation_flags & flags) == flags) {
-      /* Nothing to do -- buffer already validated */
-      return PIPE_OK;
-   }
-
-   /* Final sanity checking */
-   assert(!(fenced_buf->flags & PIPE_BUFFER_USAGE_CPU_READ_WRITE));
-   assert(!(fenced_buf->flags & PIPE_BUFFER_USAGE_GPU_WRITE));
-   assert(!fenced_buf->mapcount);
-   
-   ret = pb_validate(fenced_buf->buffer, vl, flags);
-   if (ret != PIPE_OK)
-      return ret;
-   
-   fenced_buf->vl = vl;
-   fenced_buf->validation_flags |= flags;
-   
-   return PIPE_OK;
-}
-
-
-static void
-fenced_buffer_fence(struct pb_buffer *buf,
-                    struct pipe_fence_handle *fence)
-{
-   struct fenced_buffer *fenced_buf;
-   struct fenced_buffer_list *fenced_list;
-   struct pipe_winsys *winsys;
-
-   fenced_buf = fenced_buffer(buf);
-   fenced_list = fenced_buf->list;
-   winsys = fenced_list->winsys;
-   
-   if(fence == fenced_buf->fence) {
-      /* Nothing to do */
-      return;
-   }
-
-   assert(fenced_buf->vl);
-   assert(fenced_buf->validation_flags);
-   
-   pipe_mutex_lock(fenced_list->mutex);
-   if (fenced_buf->fence)
-      _fenced_buffer_remove(fenced_list, fenced_buf);
-   if (fence) {
-      winsys->fence_reference(winsys, &fenced_buf->fence, fence);
-      fenced_buf->flags |= fenced_buf->validation_flags;
-      _fenced_buffer_add(fenced_buf);
-   }
-   pipe_mutex_unlock(fenced_list->mutex);
-   
-   pb_fence(fenced_buf->buffer, fence);
-
-   fenced_buf->vl = NULL;
-   fenced_buf->validation_flags = 0;
-}
-
-
 static void
 fenced_buffer_get_base_buffer(struct pb_buffer *buf,
                               struct pb_buffer **base_buf,
@@ -415,13 +325,11 @@ fenced_buffer_get_base_buffer(struct pb_buffer *buf,
 }
 
 
-static const struct pb_vtbl 
+const struct pb_vtbl 
 fenced_buffer_vtbl = {
       fenced_buffer_destroy,
       fenced_buffer_map,
       fenced_buffer_unmap,
-      fenced_buffer_validate,
-      fenced_buffer_fence,
       fenced_buffer_get_base_buffer
 };
 
@@ -454,6 +362,52 @@ fenced_buffer_create(struct fenced_buffer_list *fenced_list,
 }
 
 
+void
+buffer_fence(struct pb_buffer *buf,
+             struct pipe_fence_handle *fence)
+{
+   struct fenced_buffer *fenced_buf;
+   struct fenced_buffer_list *fenced_list;
+   struct pipe_winsys *winsys;
+   /* FIXME: receive this as a parameter */
+   unsigned flags = fence ? PIPE_BUFFER_USAGE_GPU_READ_WRITE : 0;
+
+   /* This is a public function, so be extra cautious with the buffer passed, 
+    * as happens frequently to receive null buffers, or pointer to buffers 
+    * other than fenced buffers. */
+   assert(buf);
+   if(!buf)
+      return;
+   assert(buf->vtbl == &fenced_buffer_vtbl);
+   if(buf->vtbl != &fenced_buffer_vtbl)
+      return;
+   
+   fenced_buf = fenced_buffer(buf);
+   fenced_list = fenced_buf->list;
+   winsys = fenced_list->winsys;
+   
+   if(!fence || fence == fenced_buf->fence) {
+      /* Handle the same fence case specially, not only because it is a fast 
+       * path, but mostly to avoid serializing two writes with the same fence, 
+       * as that would bring the hardware down to synchronous operation without
+       * any benefit.
+       */
+      fenced_buf->flags |= flags & PIPE_BUFFER_USAGE_GPU_READ_WRITE;
+      return;
+   }
+   
+   pipe_mutex_lock(fenced_list->mutex);
+   if (fenced_buf->fence)
+      _fenced_buffer_remove(fenced_list, fenced_buf);
+   if (fence) {
+      winsys->fence_reference(winsys, &fenced_buf->fence, fence);
+      fenced_buf->flags |= flags & PIPE_BUFFER_USAGE_GPU_READ_WRITE;
+      _fenced_buffer_add(fenced_buf);
+   }
+   pipe_mutex_unlock(fenced_list->mutex);
+}
+
+
 struct fenced_buffer_list *
 fenced_buffer_list_create(struct pipe_winsys *winsys) 
 {
diff --git a/src/gallium/auxiliary/pipebuffer/pb_buffer_fenced.h b/src/gallium/auxiliary/pipebuffer/pb_buffer_fenced.h
index b15c6761946..50d5891bdb3 100644
--- a/src/gallium/auxiliary/pipebuffer/pb_buffer_fenced.h
+++ b/src/gallium/auxiliary/pipebuffer/pb_buffer_fenced.h
@@ -44,7 +44,7 @@
  * Between the handle's destruction, and the fence signalling, the buffer is 
  * stored in a fenced buffer list.
  * 
- * \author Jose Fonseca <[email protected]>
+ * \author José Fonseca <[email protected]>
  */
 
 #ifndef PB_BUFFER_FENCED_H_
@@ -71,6 +71,14 @@ struct fenced_buffer_list;
 
 
 /**
+ * The fenced buffer's virtual function table.
+ * 
+ * NOTE: Made public for debugging purposes.
+ */
+extern const struct pb_vtbl fenced_buffer_vtbl;
+
+
+/**
  * Create a fenced buffer list.
  * 
  * See also fenced_bufmgr_create for a more convenient way to use this.
@@ -100,6 +108,17 @@ fenced_buffer_create(struct fenced_buffer_list *fenced,
                      struct pb_buffer *buffer);
 
 
+/**
+ * Set a buffer's fence.
+ * 
+ * NOTE: Although it takes a generic pb_buffer argument, it will fail
+ * on everything but buffers returned by fenced_buffer_create.
+ */
+void
+buffer_fence(struct pb_buffer *buf,
+             struct pipe_fence_handle *fence);
+
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/src/gallium/auxiliary/pipebuffer/pb_buffer_malloc.c b/src/gallium/auxiliary/pipebuffer/pb_buffer_malloc.c
index 53f497cfb04..1bf22a2ec09 100644
--- a/src/gallium/auxiliary/pipebuffer/pb_buffer_malloc.c
+++ b/src/gallium/auxiliary/pipebuffer/pb_buffer_malloc.c
@@ -81,24 +81,6 @@ malloc_buffer_unmap(struct pb_buffer *buf)
 }
 
 
-static enum pipe_error 
-malloc_buffer_validate(struct pb_buffer *buf, 
-                       struct pb_validate *vl,
-                       unsigned flags)
-{
-   assert(0);
-   return PIPE_ERROR;
-}
-
-
-static void
-malloc_buffer_fence(struct pb_buffer *buf, 
-                    struct pipe_fence_handle *fence)
-{
-   assert(0);
-}
-
-
 static void
 malloc_buffer_get_base_buffer(struct pb_buffer *buf,
                               struct pb_buffer **base_buf,
@@ -114,8 +96,6 @@ malloc_buffer_vtbl = {
       malloc_buffer_destroy,
       malloc_buffer_map,
       malloc_buffer_unmap,
-      malloc_buffer_validate,
-      malloc_buffer_fence,
       malloc_buffer_get_base_buffer
 };
 
diff --git a/src/gallium/auxiliary/pipebuffer/pb_bufmgr.h b/src/gallium/auxiliary/pipebuffer/pb_bufmgr.h
index 0a8264a9243..cafbee045ae 100644
--- a/src/gallium/auxiliary/pipebuffer/pb_bufmgr.h
+++ b/src/gallium/auxiliary/pipebuffer/pb_bufmgr.h
@@ -43,7 +43,7 @@
  * - the fenced buffer manager, which will delay buffer destruction until the 
  * the moment the card finishing processing it. 
  * 
- * \author Jose Fonseca <[email protected]>
+ * \author José Fonseca <[email protected]>
  */
 
 #ifndef PB_BUFMGR_H_
@@ -183,20 +183,6 @@ pb_alt_manager_create(struct pb_manager *provider1,
 
 
 /** 
- * Ondemand buffer manager.
- * 
- * Buffers are created in malloc'ed memory (fast and cached), and the constents
- * is transfered to a buffer from the provider (typically in slow uncached 
- * memory) when there is an attempt to validate the buffer.
- * 
- * Ideal for situations where one does not know before hand whether a given
- * buffer will effectively be used by the hardware or not. 
- */
-struct pb_manager *
-pb_ondemand_manager_create(struct pb_manager *provider); 
-
-
-/** 
  * Debug buffer manager to detect buffer under- and overflows.
  *
  * Band size should be a multiple of the largest alignment
diff --git a/src/gallium/auxiliary/pipebuffer/pb_bufmgr_cache.c b/src/gallium/auxiliary/pipebuffer/pb_bufmgr_cache.c
index f57a7bffd78..8f118874ec3 100644
--- a/src/gallium/auxiliary/pipebuffer/pb_bufmgr_cache.c
+++ b/src/gallium/auxiliary/pipebuffer/pb_bufmgr_cache.c
@@ -29,7 +29,7 @@
  * \file
  * Buffer cache.
  * 
- * \author Jose Fonseca <jrfonseca-at-tungstengraphics-dot-com>
+ * \author José Fonseca <jrfonseca-at-tungstengraphics-dot-com>
  * \author Thomas Hellström <thomas-at-tungstengraphics-dot-com>
  */
 
@@ -183,25 +183,6 @@ pb_cache_buffer_unmap(struct pb_buffer *_buf)
 }
 
 
-static enum pipe_error 
-pb_cache_buffer_validate(struct pb_buffer *_buf, 
-                         struct pb_validate *vl,
-                         unsigned flags)
-{
-   struct pb_cache_buffer *buf = pb_cache_buffer(_buf);
-   return pb_validate(buf->buffer, vl, flags);
-}
-
-
-static void
-pb_cache_buffer_fence(struct pb_buffer *_buf, 
-                      struct pipe_fence_handle *fence)
-{
-   struct pb_cache_buffer *buf = pb_cache_buffer(_buf);
-   pb_fence(buf->buffer, fence);
-}
-
-
 static void
 pb_cache_buffer_get_base_buffer(struct pb_buffer *_buf,
                               struct pb_buffer **base_buf,
@@ -217,8 +198,6 @@ pb_cache_buffer_vtbl = {
       pb_cache_buffer_destroy,
       pb_cache_buffer_map,
       pb_cache_buffer_unmap,
-      pb_cache_buffer_validate,
-      pb_cache_buffer_fence,
       pb_cache_buffer_get_base_buffer
 };
 
diff --git a/src/gallium/auxiliary/pipebuffer/pb_bufmgr_debug.c b/src/gallium/auxiliary/pipebuffer/pb_bufmgr_debug.c
index 62639fe1c87..1675e6e1822 100644
--- a/src/gallium/auxiliary/pipebuffer/pb_bufmgr_debug.c
+++ b/src/gallium/auxiliary/pipebuffer/pb_bufmgr_debug.c
@@ -29,7 +29,7 @@
  * \file
  * Debug buffer manager to detect buffer under- and overflows.
  * 
- * \author Jose Fonseca <[email protected]>
+ * \author José Fonseca <[email protected]>
  */
 
 
@@ -255,35 +255,11 @@ pb_debug_buffer_get_base_buffer(struct pb_buffer *_buf,
 }
 
 
-static enum pipe_error 
-pb_debug_buffer_validate(struct pb_buffer *_buf, 
-                         struct pb_validate *vl,
-                         unsigned flags)
-{
-   struct pb_debug_buffer *buf = pb_debug_buffer(_buf);
-   
-   pb_debug_buffer_check(buf);
-
-   return pb_validate(buf->buffer, vl, flags);
-}
-
-
-static void
-pb_debug_buffer_fence(struct pb_buffer *_buf, 
-                      struct pipe_fence_handle *fence)
-{
-   struct pb_debug_buffer *buf = pb_debug_buffer(_buf);
-   pb_fence(buf->buffer, fence);
-}
-
-
 const struct pb_vtbl 
 pb_debug_buffer_vtbl = {
       pb_debug_buffer_destroy,
       pb_debug_buffer_map,
       pb_debug_buffer_unmap,
-      pb_debug_buffer_validate,
-      pb_debug_buffer_fence,
       pb_debug_buffer_get_base_buffer
 };
 
diff --git a/src/gallium/auxiliary/pipebuffer/pb_bufmgr_fenced.c b/src/gallium/auxiliary/pipebuffer/pb_bufmgr_fenced.c
index 513ed28ca63..e2594ea2369 100644
--- a/src/gallium/auxiliary/pipebuffer/pb_bufmgr_fenced.c
+++ b/src/gallium/auxiliary/pipebuffer/pb_bufmgr_fenced.c
@@ -30,7 +30,7 @@
  * \file
  * A buffer manager that wraps buffers in fenced buffers.
  * 
- * \author Jose Fonseca <[email protected]>
+ * \author José Fonseca <[email protected]>
  */
 
 
diff --git a/src/gallium/auxiliary/pipebuffer/pb_bufmgr_mm.c b/src/gallium/auxiliary/pipebuffer/pb_bufmgr_mm.c
index fd39838bfdf..a976d3041ac 100644
--- a/src/gallium/auxiliary/pipebuffer/pb_bufmgr_mm.c
+++ b/src/gallium/auxiliary/pipebuffer/pb_bufmgr_mm.c
@@ -29,7 +29,7 @@
  * \file
  * Buffer manager using the old texture memory manager.
  * 
- * \author Jose Fonseca <[email protected]>
+ * \author José Fonseca <[email protected]>
  */
 
 
@@ -124,27 +124,6 @@ mm_buffer_unmap(struct pb_buffer *buf)
 }
 
 
-static enum pipe_error 
-mm_buffer_validate(struct pb_buffer *buf, 
-                   struct pb_validate *vl,
-                   unsigned flags)
-{
-   struct mm_buffer *mm_buf = mm_buffer(buf);
-   struct mm_pb_manager *mm = mm_buf->mgr;
-   return pb_validate(mm->buffer, vl, flags);
-}
-
-
-static void
-mm_buffer_fence(struct pb_buffer *buf, 
-                struct pipe_fence_handle *fence)
-{
-   struct mm_buffer *mm_buf = mm_buffer(buf);
-   struct mm_pb_manager *mm = mm_buf->mgr;
-   pb_fence(mm->buffer, fence);
-}
-
-
 static void
 mm_buffer_get_base_buffer(struct pb_buffer *buf,
                           struct pb_buffer **base_buf,
@@ -162,8 +141,6 @@ mm_buffer_vtbl = {
       mm_buffer_destroy,
       mm_buffer_map,
       mm_buffer_unmap,
-      mm_buffer_validate,
-      mm_buffer_fence,
       mm_buffer_get_base_buffer
 };
 
diff --git a/src/gallium/auxiliary/pipebuffer/pb_bufmgr_ondemand.c b/src/gallium/auxiliary/pipebuffer/pb_bufmgr_ondemand.c
deleted file mode 100644
index ba02a84e62d..00000000000
--- a/src/gallium/auxiliary/pipebuffer/pb_bufmgr_ondemand.c
+++ /dev/null
@@ -1,303 +0,0 @@
-/**************************************************************************
- *
- * Copyright 2008 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.
- *
- **************************************************************************/
-
-/**
- * @file
- * A variation of malloc buffers which get transferred to real graphics memory
- * when there is an attempt to validate them. 
- * 
- * @author Jose Fonseca <[email protected]>
- */
-
-
-#include "pipe/p_debug.h"
-#include "util/u_memory.h"
-#include "pb_buffer.h"
-#include "pb_bufmgr.h"
-
-
-struct pb_ondemand_manager;
-
-
-struct pb_ondemand_buffer 
-{
-   struct pb_buffer base;
-   
-   struct pb_ondemand_manager *mgr;
-   
-   /** Regular malloc'ed memory */
-   void *data;
-   unsigned mapcount;
-   
-   /** Real buffer */
-   struct pb_buffer *buffer;
-   size_t size;
-   struct pb_desc desc;
-};
-
-
-struct pb_ondemand_manager
-{
-   struct pb_manager base;
-   
-   struct pb_manager *provider;
-};
-
-
-extern const struct pb_vtbl pb_ondemand_buffer_vtbl;
-
-static INLINE struct pb_ondemand_buffer *
-pb_ondemand_buffer(struct pb_buffer *buf)
-{
-   assert(buf);
-   assert(buf->vtbl == &pb_ondemand_buffer_vtbl);
-   return (struct pb_ondemand_buffer *)buf;
-}
-
-static INLINE struct pb_ondemand_manager *
-pb_ondemand_manager(struct pb_manager *mgr)
-{
-   assert(mgr);
-   return (struct pb_ondemand_manager *)mgr;
-}
-
-
-static void
-pb_ondemand_buffer_destroy(struct pb_buffer *_buf)
-{
-   struct pb_ondemand_buffer *buf = pb_ondemand_buffer(_buf);
-   
-   pb_reference(&buf->buffer, NULL);
-   
-   align_free(buf->data);
-   
-   FREE(buf);
-}
-
-
-static void *
-pb_ondemand_buffer_map(struct pb_buffer *_buf, 
-                       unsigned flags)
-{
-   struct pb_ondemand_buffer *buf = pb_ondemand_buffer(_buf);
-
-   if(buf->buffer) {
-      assert(!buf->data);
-      return pb_map(buf->buffer, flags);
-   }
-   else {
-      assert(buf->data);
-      ++buf->mapcount;
-      return buf->data;
-   }
-}
-
-
-static void
-pb_ondemand_buffer_unmap(struct pb_buffer *_buf)
-{
-   struct pb_ondemand_buffer *buf = pb_ondemand_buffer(_buf);
-
-   if(buf->buffer) {
-      assert(!buf->data);
-      pb_unmap(buf->buffer);
-   }
-   else {
-      assert(buf->data);
-      assert(buf->mapcount);
-      if(buf->mapcount)
-         --buf->mapcount;
-   }
-}
-
-
-static enum pipe_error 
-pb_ondemand_buffer_instantiate(struct pb_ondemand_buffer *buf)
-{
-   if(!buf->buffer) {
-      struct pb_manager *provider = buf->mgr->provider;
-      uint8_t *map;
-      
-      assert(!buf->mapcount);
-      
-      buf->buffer = provider->create_buffer(provider, buf->size, &buf->desc);
-      if(!buf->buffer)
-         return PIPE_ERROR_OUT_OF_MEMORY;
-      
-      map = pb_map(buf->buffer, PIPE_BUFFER_USAGE_CPU_READ);
-      if(!map) {
-         pb_reference(&buf->buffer, NULL);
-         return PIPE_ERROR;
-      }
-      
-      memcpy(map, buf->data, buf->size);
-      
-      pb_unmap(buf->buffer);
-      
-      if(!buf->mapcount) {
-         FREE(buf->data);
-         buf->data = NULL;
-      }
-   }
-   
-   return PIPE_OK;
-}
-
-static enum pipe_error 
-pb_ondemand_buffer_validate(struct pb_buffer *_buf, 
-                            struct pb_validate *vl,
-                            unsigned flags)
-{
-   struct pb_ondemand_buffer *buf = pb_ondemand_buffer(_buf);
-   enum pipe_error ret; 
-
-   assert(!buf->mapcount);
-   if(buf->mapcount)
-      return PIPE_ERROR;
-
-   ret = pb_ondemand_buffer_instantiate(buf);
-   if(ret != PIPE_OK)
-      return ret;
-   
-   return pb_validate(buf->buffer, vl, flags);
-}
-
-
-static void
-pb_ondemand_buffer_fence(struct pb_buffer *_buf, 
-                         struct pipe_fence_handle *fence)
-{
-   struct pb_ondemand_buffer *buf = pb_ondemand_buffer(_buf);
-   
-   assert(buf->buffer);
-   if(!buf->buffer)
-      return;
-   
-   pb_fence(buf->buffer, fence);
-}
-
-
-static void
-pb_ondemand_buffer_get_base_buffer(struct pb_buffer *_buf,
-                                   struct pb_buffer **base_buf,
-                                   unsigned *offset)
-{
-   struct pb_ondemand_buffer *buf = pb_ondemand_buffer(_buf);
-
-   if(pb_ondemand_buffer_instantiate(buf) != PIPE_OK) {
-      assert(0);
-      *base_buf = &buf->base;
-      *offset = 0;
-      return;
-   }
-
-   pb_get_base_buffer(buf->buffer, base_buf, offset);
-}
-
-
-const struct pb_vtbl 
-pb_ondemand_buffer_vtbl = {
-      pb_ondemand_buffer_destroy,
-      pb_ondemand_buffer_map,
-      pb_ondemand_buffer_unmap,
-      pb_ondemand_buffer_validate,
-      pb_ondemand_buffer_fence,
-      pb_ondemand_buffer_get_base_buffer
-};
-
-
-static struct pb_buffer *
-pb_ondemand_manager_create_buffer(struct pb_manager *_mgr, 
-                                  size_t size,
-                                  const struct pb_desc *desc) 
-{
-   struct pb_ondemand_manager *mgr = pb_ondemand_manager(_mgr);
-   struct pb_ondemand_buffer *buf;
-   
-   buf = CALLOC_STRUCT(pb_ondemand_buffer);
-   if(!buf)
-      return NULL;
-
-   buf->base.base.refcount = 1;
-   buf->base.base.alignment = desc->alignment;
-   buf->base.base.usage = desc->usage;
-   buf->base.base.size = size;
-   buf->base.vtbl = &pb_ondemand_buffer_vtbl;
-   
-   buf->mgr = mgr;
-   
-   buf->data = align_malloc(size, desc->alignment < sizeof(void*) ? sizeof(void*) : desc->alignment);
-   if(!buf->data) {
-      FREE(buf);
-      return NULL;
-   }
-   
-   buf->size = size;
-   buf->desc = *desc;
-
-   return &buf->base;
-}
-
-
-static void
-pb_ondemand_manager_flush(struct pb_manager *_mgr) 
-{
-   struct pb_ondemand_manager *mgr = pb_ondemand_manager(_mgr);
-   
-   mgr->provider->flush(mgr->provider);
-}
-
-
-static void
-pb_ondemand_manager_destroy(struct pb_manager *_mgr) 
-{
-   struct pb_ondemand_manager *mgr = pb_ondemand_manager(_mgr);
-
-   FREE(mgr);
-}
-
-
-struct pb_manager *
-pb_ondemand_manager_create(struct pb_manager *provider) 
-{
-   struct pb_ondemand_manager *mgr;
-
-   if(!provider)
-      return NULL;
-   
-   mgr = CALLOC_STRUCT(pb_ondemand_manager);
-   if(!mgr)
-      return NULL;
-   
-   mgr->base.destroy = pb_ondemand_manager_destroy;
-   mgr->base.create_buffer = pb_ondemand_manager_create_buffer;
-   mgr->base.flush = pb_ondemand_manager_flush;
-   
-   mgr->provider = provider;
-
-   return &mgr->base;
-}
diff --git a/src/gallium/auxiliary/pipebuffer/pb_bufmgr_pool.c b/src/gallium/auxiliary/pipebuffer/pb_bufmgr_pool.c
index a6ff37653e9..61ac291ed77 100644
--- a/src/gallium/auxiliary/pipebuffer/pb_bufmgr_pool.c
+++ b/src/gallium/auxiliary/pipebuffer/pb_bufmgr_pool.c
@@ -30,7 +30,7 @@
  * \file
  * Batch buffer pool management.
  * 
- * \author Jose Fonseca <jrfonseca-at-tungstengraphics-dot-com>
+ * \author José Fonseca <jrfonseca-at-tungstengraphics-dot-com>
  * \author Thomas Hellström <thomas-at-tungstengraphics-dot-com>
  */
 
@@ -138,27 +138,6 @@ pool_buffer_unmap(struct pb_buffer *buf)
 }
 
 
-static enum pipe_error 
-pool_buffer_validate(struct pb_buffer *buf, 
-                     struct pb_validate *vl,
-                     unsigned flags)
-{
-   struct pool_buffer *pool_buf = pool_buffer(buf);
-   struct pool_pb_manager *pool = pool_buf->mgr;
-   return pb_validate(pool->buffer, vl, flags);
-}
-
-
-static void
-pool_buffer_fence(struct pb_buffer *buf, 
-                  struct pipe_fence_handle *fence)
-{
-   struct pool_buffer *pool_buf = pool_buffer(buf);
-   struct pool_pb_manager *pool = pool_buf->mgr;
-   pb_fence(pool->buffer, fence);
-}
-
-
 static void
 pool_buffer_get_base_buffer(struct pb_buffer *buf,
                             struct pb_buffer **base_buf,
@@ -176,8 +155,6 @@ pool_buffer_vtbl = {
       pool_buffer_destroy,
       pool_buffer_map,
       pool_buffer_unmap,
-      pool_buffer_validate,
-      pool_buffer_fence,
       pool_buffer_get_base_buffer
 };
 
diff --git a/src/gallium/auxiliary/pipebuffer/pb_bufmgr_slab.c b/src/gallium/auxiliary/pipebuffer/pb_bufmgr_slab.c
index 9b9fedccb4b..2a801549202 100644
--- a/src/gallium/auxiliary/pipebuffer/pb_bufmgr_slab.c
+++ b/src/gallium/auxiliary/pipebuffer/pb_bufmgr_slab.c
@@ -248,25 +248,6 @@ pb_slab_buffer_unmap(struct pb_buffer *_buf)
 }
 
 
-static enum pipe_error 
-pb_slab_buffer_validate(struct pb_buffer *_buf, 
-                         struct pb_validate *vl,
-                         unsigned flags)
-{
-   struct pb_slab_buffer *buf = pb_slab_buffer(_buf);
-   return pb_validate(buf->slab->bo, vl, flags);
-}
-
-
-static void
-pb_slab_buffer_fence(struct pb_buffer *_buf, 
-                      struct pipe_fence_handle *fence)
-{
-   struct pb_slab_buffer *buf = pb_slab_buffer(_buf);
-   pb_fence(buf->slab->bo, fence);
-}
-
-
 static void
 pb_slab_buffer_get_base_buffer(struct pb_buffer *_buf,
                                struct pb_buffer **base_buf,
@@ -283,8 +264,6 @@ pb_slab_buffer_vtbl = {
       pb_slab_buffer_destroy,
       pb_slab_buffer_map,
       pb_slab_buffer_unmap,
-      pb_slab_buffer_validate,
-      pb_slab_buffer_fence,
       pb_slab_buffer_get_base_buffer
 };
 
diff --git a/src/gallium/auxiliary/pipebuffer/pb_validate.c b/src/gallium/auxiliary/pipebuffer/pb_validate.c
index 94532bb4cec..1e54fc39d44 100644
--- a/src/gallium/auxiliary/pipebuffer/pb_validate.c
+++ b/src/gallium/auxiliary/pipebuffer/pb_validate.c
@@ -46,16 +46,9 @@
 #define PB_VALIDATE_INITIAL_SIZE 1 /* 512 */ 
 
 
-struct pb_validate_entry
-{
-   struct pb_buffer *buf;
-   unsigned flags;
-};
-
-
 struct pb_validate
 {
-   struct pb_validate_entry *entries;
+   struct pb_buffer **buffers;
    unsigned used;
    unsigned size;
 };
@@ -63,50 +56,43 @@ struct pb_validate
 
 enum pipe_error
 pb_validate_add_buffer(struct pb_validate *vl,
-                       struct pb_buffer *buf,
-                       unsigned flags)
+                       struct pb_buffer *buf)
 {
    assert(buf);
    if(!buf)
       return PIPE_ERROR;
 
-   assert(flags & PIPE_BUFFER_USAGE_GPU_READ_WRITE);
-   assert(!(flags & ~PIPE_BUFFER_USAGE_GPU_READ_WRITE));
-   flags &= PIPE_BUFFER_USAGE_GPU_READ_WRITE;
-
    /* We only need to store one reference for each buffer, so avoid storing
-    * consecutive references for the same buffer. It might not be the most 
-    * common pattern, but it is easy to implement.
+    * consecutive references for the same buffer. It might not be the more 
+    * common pasttern, but it is easy to implement.
     */
-   if(vl->used && vl->entries[vl->used - 1].buf == buf) {
-      vl->entries[vl->used - 1].flags |= flags;
+   if(vl->used && vl->buffers[vl->used - 1] == buf) {
       return PIPE_OK;
    }
    
    /* Grow the table */
    if(vl->used == vl->size) {
       unsigned new_size;
-      struct pb_validate_entry *new_entries;
+      struct pb_buffer **new_buffers;
       
       new_size = vl->size * 2;
       if(!new_size)
 	 return PIPE_ERROR_OUT_OF_MEMORY;
 
-      new_entries = (struct pb_validate_entry *)REALLOC(vl->entries,
-                                                        vl->size*sizeof(struct pb_validate_entry),
-                                                        new_size*sizeof(struct pb_validate_entry));
-      if(!new_entries)
+      new_buffers = (struct pb_buffer **)REALLOC(vl->buffers,
+                                                 vl->size*sizeof(struct pb_buffer *),
+                                                 new_size*sizeof(struct pb_buffer *));
+      if(!new_buffers)
          return PIPE_ERROR_OUT_OF_MEMORY;
       
-      memset(new_entries + vl->size, 0, (new_size - vl->size)*sizeof(struct pb_validate_entry));
+      memset(new_buffers + vl->size, 0, (new_size - vl->size)*sizeof(struct pb_buffer *));
       
       vl->size = new_size;
-      vl->entries = new_entries;
+      vl->buffers = new_buffers;
    }
    
-   assert(!vl->entries[vl->used].buf);
-   pb_reference(&vl->entries[vl->used].buf, buf);
-   vl->entries[vl->used].flags = flags;
+   assert(!vl->buffers[vl->used]);
+   pb_reference(&vl->buffers[vl->used], buf);
    ++vl->used;
    
    return PIPE_OK;
@@ -114,36 +100,10 @@ pb_validate_add_buffer(struct pb_validate *vl,
 
 
 enum pipe_error
-pb_validate_foreach(struct pb_validate *vl,
-                    enum pipe_error (*callback)(struct pb_buffer *buf, void *data),
-                    void *data)
-{
-   unsigned i;
-   for(i = 0; i < vl->used; ++i) {
-      enum pipe_error ret;
-      ret = callback(vl->entries[i].buf, data);
-      if(ret != PIPE_OK)
-         return ret;
-   }
-   return PIPE_OK;
-}
-
-
-enum pipe_error
 pb_validate_validate(struct pb_validate *vl) 
 {
-   unsigned i;
-   
-   for(i = 0; i < vl->used; ++i) {
-      enum pipe_error ret;
-      ret = pb_validate(vl->entries[i].buf, vl, vl->entries[i].flags);
-      if(ret != PIPE_OK) {
-         while(i--)
-            pb_validate(vl->entries[i].buf, NULL, 0);
-         return ret;
-      }
-   }
-
+   /* FIXME: go through each buffer, ensure its not mapped, its address is 
+    * available -- requires a new pb_buffer interface */
    return PIPE_OK;
 }
 
@@ -154,8 +114,8 @@ pb_validate_fence(struct pb_validate *vl,
 {
    unsigned i;
    for(i = 0; i < vl->used; ++i) {
-      pb_fence(vl->entries[i].buf, fence);
-      pb_reference(&vl->entries[i].buf, NULL);
+      buffer_fence(vl->buffers[i], fence);
+      pb_reference(&vl->buffers[i], NULL);
    }
    vl->used = 0;
 }
@@ -166,8 +126,8 @@ pb_validate_destroy(struct pb_validate *vl)
 {
    unsigned i;
    for(i = 0; i < vl->used; ++i)
-      pb_reference(&vl->entries[i].buf, NULL);
-   FREE(vl->entries);
+      pb_reference(&vl->buffers[i], NULL);
+   FREE(vl->buffers);
    FREE(vl);
 }
 
@@ -182,8 +142,8 @@ pb_validate_create()
       return NULL;
    
    vl->size = PB_VALIDATE_INITIAL_SIZE;
-   vl->entries = (struct pb_validate_entry *)CALLOC(vl->size, sizeof(struct pb_validate_entry));
-   if(!vl->entries) {
+   vl->buffers = (struct pb_buffer **)CALLOC(vl->size, sizeof(struct pb_buffer *));
+   if(!vl->buffers) {
       FREE(vl);
       return NULL;
    }
diff --git a/src/gallium/auxiliary/pipebuffer/pb_validate.h b/src/gallium/auxiliary/pipebuffer/pb_validate.h
index dfb84df1cef..3db1d5330b9 100644
--- a/src/gallium/auxiliary/pipebuffer/pb_validate.h
+++ b/src/gallium/auxiliary/pipebuffer/pb_validate.h
@@ -58,13 +58,7 @@ struct pb_validate;
 
 enum pipe_error
 pb_validate_add_buffer(struct pb_validate *vl,
-                       struct pb_buffer *buf,
-                       unsigned flags);
-
-enum pipe_error
-pb_validate_foreach(struct pb_validate *vl,
-                    enum pipe_error (*callback)(struct pb_buffer *buf, void *data),
-                    void *data);
+                       struct pb_buffer *buf);
 
 /**
  * Validate all buffers for hardware access.
@@ -77,7 +71,7 @@ pb_validate_validate(struct pb_validate *vl);
 /**
  * Fence all buffers and clear the list.
  * 
- * Should be called right after issuing commands to the hardware.
+ * Should be called right before issuing commands to the hardware.
  */
 void
 pb_validate_fence(struct pb_validate *vl,
diff --git a/src/gallium/auxiliary/pipebuffer/pb_winsys.c b/src/gallium/auxiliary/pipebuffer/pb_winsys.c
index 45a883e5322..28d137dbc43 100644
--- a/src/gallium/auxiliary/pipebuffer/pb_winsys.c
+++ b/src/gallium/auxiliary/pipebuffer/pb_winsys.c
@@ -30,7 +30,7 @@
  * Implementation of client buffer (also designated as "user buffers"), which
  * are just state-tracker owned data masqueraded as buffers.
  * 
- * \author Jose Fonseca <[email protected]>
+ * \author Jos� Fonseca <[email protected]>
  */
 
 
@@ -91,24 +91,6 @@ pb_user_buffer_unmap(struct pb_buffer *buf)
 }
 
 
-static enum pipe_error 
-pb_user_buffer_validate(struct pb_buffer *buf, 
-                        struct pb_validate *vl,
-                        unsigned flags)
-{
-   assert(0);
-   return PIPE_ERROR;
-}
-
-
-static void
-pb_user_buffer_fence(struct pb_buffer *buf, 
-                     struct pipe_fence_handle *fence)
-{
-   assert(0);
-}
-
-
 static void
 pb_user_buffer_get_base_buffer(struct pb_buffer *buf,
                                struct pb_buffer **base_buf,
@@ -124,8 +106,6 @@ pb_user_buffer_vtbl = {
       pb_user_buffer_destroy,
       pb_user_buffer_map,
       pb_user_buffer_unmap,
-      pb_user_buffer_validate,
-      pb_user_buffer_fence,
       pb_user_buffer_get_base_buffer
 };
 
diff --git a/src/gallium/auxiliary/util/u_blit.c b/src/gallium/auxiliary/util/u_blit.c
index d28201ac8dc..2cef3338b5d 100644
--- a/src/gallium/auxiliary/util/u_blit.c
+++ b/src/gallium/auxiliary/util/u_blit.c
@@ -66,6 +66,8 @@ struct blit_state
    void *fs;
 
    struct pipe_buffer *vbuf;  /**< quad vertices */
+   unsigned vbuf_slot;
+
    float vertices[4][2][4];   /**< vertex/texcoords for quad */
 };
 
@@ -138,17 +140,7 @@ util_create_blit(struct pipe_context *pipe, struct cso_context *cso)
 
    /* fragment shader */
    ctx->fs = util_make_fragment_tex_shader(pipe, &ctx->frag_shader);
-
-   ctx->vbuf = pipe_buffer_create(pipe->screen,
-                                  32,
-                                  PIPE_BUFFER_USAGE_VERTEX,
-                                  sizeof(ctx->vertices));
-   if (!ctx->vbuf) {
-      FREE(ctx);
-      ctx->pipe->delete_fs_state(ctx->pipe, ctx->fs);
-      ctx->pipe->delete_vs_state(ctx->pipe, ctx->vs);
-      return NULL;
-   }
+   ctx->vbuf = NULL;
 
    /* init vertex data that doesn't change */
    for (i = 0; i < 4; i++) {
@@ -181,15 +173,35 @@ util_destroy_blit(struct blit_state *ctx)
 }
 
 
+static unsigned get_next_slot( struct blit_state *ctx )
+{
+   const unsigned max_slots = 4096 / sizeof ctx->vertices;
+
+   if (ctx->vbuf_slot >= max_slots) 
+      util_blit_flush( ctx );
+
+   if (!ctx->vbuf) {
+      ctx->vbuf = pipe_buffer_create(ctx->pipe->screen,
+                                     32,
+                                     PIPE_BUFFER_USAGE_VERTEX,
+                                     max_slots * sizeof ctx->vertices);
+   }
+   
+   return ctx->vbuf_slot++ * sizeof ctx->vertices;
+}
+                               
+
+
 /**
  * Setup vertex data for the textured quad we'll draw.
  * Note: y=0=top
  */
-static void
+static unsigned
 setup_vertex_data(struct blit_state *ctx,
                   float x0, float y0, float x1, float y1, float z)
 {
    void *buf;
+   unsigned offset;
 
    ctx->vertices[0][0][0] = x0;
    ctx->vertices[0][0][1] = y0;
@@ -215,12 +227,16 @@ setup_vertex_data(struct blit_state *ctx,
    ctx->vertices[3][1][0] = 0.0f;
    ctx->vertices[3][1][1] = 1.0f;
 
+   offset = get_next_slot( ctx );
+
    buf = pipe_buffer_map(ctx->pipe->screen, ctx->vbuf,
                          PIPE_BUFFER_USAGE_CPU_WRITE);
 
-   memcpy(buf, ctx->vertices, sizeof(ctx->vertices));
+   memcpy((char *)buf + offset, ctx->vertices, sizeof(ctx->vertices));
 
    pipe_buffer_unmap(ctx->pipe->screen, ctx->vbuf);
+
+   return offset;
 }
 
 
@@ -228,13 +244,14 @@ setup_vertex_data(struct blit_state *ctx,
  * Setup vertex data for the textured quad we'll draw.
  * Note: y=0=top
  */
-static void
+static unsigned
 setup_vertex_data_tex(struct blit_state *ctx,
                       float x0, float y0, float x1, float y1,
                       float s0, float t0, float s1, float t1,
                       float z)
 {
    void *buf;
+   unsigned offset;
 
    ctx->vertices[0][0][0] = x0;
    ctx->vertices[0][0][1] = y0;
@@ -260,12 +277,16 @@ setup_vertex_data_tex(struct blit_state *ctx,
    ctx->vertices[3][1][0] = s0;
    ctx->vertices[3][1][1] = t1;
 
+   offset = get_next_slot( ctx );
+
    buf = pipe_buffer_map(ctx->pipe->screen, ctx->vbuf,
                          PIPE_BUFFER_USAGE_CPU_WRITE);
 
-   memcpy(buf, ctx->vertices, sizeof(ctx->vertices));
+   memcpy((char *)buf + offset, ctx->vertices, sizeof(ctx->vertices));
 
    pipe_buffer_unmap(ctx->pipe->screen, ctx->vbuf);
+
+   return offset;
 }
 /**
  * Copy pixel block from src surface to dst surface.
@@ -291,6 +312,7 @@ util_blit_pixels(struct blit_state *ctx,
    const int srcH = abs(srcY1 - srcY0);
    const int srcLeft = MIN2(srcX0, srcX1);
    const int srcTop = MIN2(srcY0, srcY1);
+   unsigned offset;
 
    assert(filter == PIPE_TEX_MIPFILTER_NEAREST ||
           filter == PIPE_TEX_MIPFILTER_LINEAR);
@@ -398,11 +420,11 @@ util_blit_pixels(struct blit_state *ctx,
    cso_set_framebuffer(ctx->cso, &fb);
 
    /* draw quad */
-   setup_vertex_data(ctx,
-                     (float) dstX0, (float) dstY0, 
-                     (float) dstX1, (float) dstY1, z);
+   offset = setup_vertex_data(ctx,
+                              (float) dstX0, (float) dstY0, 
+                              (float) dstX1, (float) dstY1, z);
 
-   util_draw_vertex_buffer(ctx->pipe, ctx->vbuf,
+   util_draw_vertex_buffer(ctx->pipe, ctx->vbuf, offset,
                            PIPE_PRIM_TRIANGLE_FAN,
                            4,  /* verts */
                            2); /* attribs/vert */
@@ -421,6 +443,18 @@ util_blit_pixels(struct blit_state *ctx,
    screen->texture_release(screen, &tex);
 }
 
+
+/* Release vertex buffer at end of frame to avoid synchronous
+ * rendering.
+ */
+void util_blit_flush( struct blit_state *ctx )
+{
+   pipe_buffer_reference(ctx->pipe->screen, &ctx->vbuf, NULL);
+   ctx->vbuf_slot = 0;
+} 
+
+
+
 /**
  * Copy pixel block from src texture to dst surface.
  * Overlapping regions are acceptable.
@@ -442,6 +476,7 @@ util_blit_pixels_tex(struct blit_state *ctx,
    struct pipe_screen *screen = pipe->screen;
    struct pipe_framebuffer_state fb;
    float s0, t0, s1, t1;
+   unsigned offset;
 
    assert(filter == PIPE_TEX_MIPFILTER_NEAREST ||
           filter == PIPE_TEX_MIPFILTER_LINEAR);
@@ -496,13 +531,14 @@ util_blit_pixels_tex(struct blit_state *ctx,
    cso_set_framebuffer(ctx->cso, &fb);
 
    /* draw quad */
-   setup_vertex_data_tex(ctx,
-                     (float) dstX0, (float) dstY0,
-                     (float) dstX1, (float) dstY1,
-                     s0, t0, s1, t1,
-                     z);
-
-   util_draw_vertex_buffer(ctx->pipe, ctx->vbuf,
+   offset = setup_vertex_data_tex(ctx,
+                                  (float) dstX0, (float) dstY0,
+                                  (float) dstX1, (float) dstY1,
+                                  s0, t0, s1, t1,
+                                  z);
+
+   util_draw_vertex_buffer(ctx->pipe, 
+                           ctx->vbuf, offset,
                            PIPE_PRIM_TRIANGLE_FAN,
                            4,  /* verts */
                            2); /* attribs/vert */
diff --git a/src/gallium/auxiliary/util/u_blit.h b/src/gallium/auxiliary/util/u_blit.h
index 308075698fb..c35beceda8d 100644
--- a/src/gallium/auxiliary/util/u_blit.h
+++ b/src/gallium/auxiliary/util/u_blit.h
@@ -70,6 +70,10 @@ util_blit_pixels_tex(struct blit_state *ctx,
                      int dstX1, int dstY1,
                      float z, uint filter);
 
+/* Call at end of frame to avoid synchronous rendering.
+ */
+extern void
+util_blit_flush( struct blit_state *ctx );
 
 #ifdef __cplusplus
 }
diff --git a/src/gallium/auxiliary/util/u_draw_quad.c b/src/gallium/auxiliary/util/u_draw_quad.c
index 8ecae71b641..d7bb74b87b4 100644
--- a/src/gallium/auxiliary/util/u_draw_quad.c
+++ b/src/gallium/auxiliary/util/u_draw_quad.c
@@ -40,6 +40,7 @@
 void 
 util_draw_vertex_buffer(struct pipe_context *pipe,
                         struct pipe_buffer *vbuf,
+                        uint offset,
                         uint prim_type,
                         uint num_verts,
                         uint num_attribs)
@@ -53,7 +54,7 @@ util_draw_vertex_buffer(struct pipe_context *pipe,
    /* tell pipe about the vertex buffer */
    vbuffer.buffer = vbuf;
    vbuffer.pitch = num_attribs * 4 * sizeof(float);  /* vertex size */
-   vbuffer.buffer_offset = 0;
+   vbuffer.buffer_offset = offset;
    pipe->set_vertex_buffers(pipe, 1, &vbuffer);
 
    /* tell pipe about the vertex attributes */
@@ -124,7 +125,7 @@ util_draw_texquad(struct pipe_context *pipe,
          v[29] = 1.0;
 
          pipe_buffer_unmap(pipe->screen, vbuf);
-         util_draw_vertex_buffer(pipe, vbuf, PIPE_PRIM_TRIANGLE_FAN, 4, 2);
+         util_draw_vertex_buffer(pipe, vbuf, 0, PIPE_PRIM_TRIANGLE_FAN, 4, 2);
       }
 
       pipe_buffer_reference(pipe->screen, &vbuf, NULL);
diff --git a/src/gallium/auxiliary/util/u_draw_quad.h b/src/gallium/auxiliary/util/u_draw_quad.h
index ec4862ead39..00d3f5b7158 100644
--- a/src/gallium/auxiliary/util/u_draw_quad.h
+++ b/src/gallium/auxiliary/util/u_draw_quad.h
@@ -37,7 +37,7 @@ struct pipe_buffer;
 
 extern void 
 util_draw_vertex_buffer(struct pipe_context *pipe,
-                        struct pipe_buffer *vbuf,
+                        struct pipe_buffer *vbuf, uint offset,
                         uint num_attribs, uint num_verts, uint prim_type);
 
 
diff --git a/src/gallium/auxiliary/util/u_gen_mipmap.c b/src/gallium/auxiliary/util/u_gen_mipmap.c
index 9d305ad763a..5f395ec6e9a 100644
--- a/src/gallium/auxiliary/util/u_gen_mipmap.c
+++ b/src/gallium/auxiliary/util/u_gen_mipmap.c
@@ -69,6 +69,8 @@ struct gen_mipmap_state
    void *fs;
 
    struct pipe_buffer *vbuf;  /**< quad vertices */
+   unsigned vbuf_slot;
+
    float vertices[4][2][4];   /**< vertex/texcoords for quad */
 };
 
@@ -779,10 +781,28 @@ util_create_gen_mipmap(struct pipe_context *pipe,
 }
 
 
-static void
+static unsigned get_next_slot( struct gen_mipmap_state *ctx )
+{
+   const unsigned max_slots = 4096 / sizeof ctx->vertices;
+
+   if (ctx->vbuf_slot >= max_slots) 
+      util_gen_mipmap_flush( ctx );
+
+   if (!ctx->vbuf) {
+      ctx->vbuf = pipe_buffer_create(ctx->pipe->screen,
+                                     32,
+                                     PIPE_BUFFER_USAGE_VERTEX,
+                                     max_slots * sizeof ctx->vertices);
+   }
+   
+   return ctx->vbuf_slot++ * sizeof ctx->vertices;
+}
+
+static unsigned
 set_vertex_data(struct gen_mipmap_state *ctx, float width, float height)
 {
    void *buf;
+   unsigned offset;
 
    ctx->vertices[0][0][0] = 0.0f; /*x*/
    ctx->vertices[0][0][1] = 0.0f; /*y*/
@@ -804,12 +824,16 @@ set_vertex_data(struct gen_mipmap_state *ctx, float width, float height)
    ctx->vertices[3][1][0] = 0.0f;
    ctx->vertices[3][1][1] = 1.0f;
 
+   offset = get_next_slot( ctx );
+
    buf = pipe_buffer_map(ctx->pipe->screen, ctx->vbuf,
                          PIPE_BUFFER_USAGE_CPU_WRITE);
 
-   memcpy(buf, ctx->vertices, sizeof(ctx->vertices));
+   memcpy((char *)buf + offset, ctx->vertices, sizeof(ctx->vertices));
 
    pipe_buffer_unmap(ctx->pipe->screen, ctx->vbuf);
+
+   return offset;
 }
 
 
@@ -834,6 +858,17 @@ util_destroy_gen_mipmap(struct gen_mipmap_state *ctx)
 }
 
 
+
+/* Release vertex buffer at end of frame to avoid synchronous
+ * rendering.
+ */
+void util_gen_mipmap_flush( struct gen_mipmap_state *ctx )
+{
+   pipe_buffer_reference(ctx->pipe->screen, &ctx->vbuf, NULL);
+   ctx->vbuf_slot = 0;
+} 
+
+
 /**
  * Generate mipmap images.  It's assumed all needed texture memory is
  * already allocated.
@@ -855,6 +890,7 @@ util_gen_mipmap(struct gen_mipmap_state *ctx,
    struct pipe_framebuffer_state fb;
    uint dstLevel;
    uint zslice = 0;
+   uint offset;
 
    /* check if we can render in the texture's format */
    if (!screen->is_format_supported(screen, pt->format, PIPE_TEXTURE_2D,
@@ -925,10 +961,13 @@ util_gen_mipmap(struct gen_mipmap_state *ctx,
       cso_set_sampler_textures(ctx->cso, 1, &pt);
 
       /* quad coords in window coords (bypassing clipping, viewport mapping) */
-      set_vertex_data(ctx,
-                      (float) pt->width[dstLevel],
-                      (float) pt->height[dstLevel]);
-      util_draw_vertex_buffer(ctx->pipe, ctx->vbuf,
+      offset = set_vertex_data(ctx,
+                               (float) pt->width[dstLevel],
+                               (float) pt->height[dstLevel]);
+
+      util_draw_vertex_buffer(ctx->pipe, 
+                              ctx->vbuf,
+                              offset,
                               PIPE_PRIM_TRIANGLE_FAN,
                               4,  /* verts */
                               2); /* attribs/vert */
diff --git a/src/gallium/auxiliary/util/u_gen_mipmap.h b/src/gallium/auxiliary/util/u_gen_mipmap.h
index 3277024f07d..54608f9466d 100644
--- a/src/gallium/auxiliary/util/u_gen_mipmap.h
+++ b/src/gallium/auxiliary/util/u_gen_mipmap.h
@@ -50,6 +50,11 @@ util_create_gen_mipmap(struct pipe_context *pipe, struct cso_context *cso);
 extern void
 util_destroy_gen_mipmap(struct gen_mipmap_state *ctx);
 
+/* Release vertex buffer at end of frame to avoid synchronous
+ * rendering.
+ */
+extern void 
+util_gen_mipmap_flush( struct gen_mipmap_state *ctx );
 
 
 extern void