gallium: rename pipe_buffer_handle to pipe_buffer, rework pipebuffer/ code

Provide an actual definition of the pipe_buffer struct,  containing
the parameters used to create the buffer, and its refcount.

Shift refcounting buffers out of the winsys interface, similar to
surfaces & textures.

Rework pipebuffer/ to reflect the fact these changes, and also Michel's
reworking of the buffer interface.

3 files changed, 41 insertions, 37 deletions

diff --git a/src/mesa/drivers/dri/intel_winsys/intel_winsys.h b/src/mesa/drivers/dri/intel_winsys/intel_winsys.h
index 89e63e0a79..ffc40782be 100644
--- a/src/mesa/drivers/dri/intel_winsys/intel_winsys.h
+++ b/src/mesa/drivers/dri/intel_winsys/intel_winsys.h
@@ -28,10 +28,12 @@
 #ifndef INTEL_WINSYS_H
 #define INTEL_WINSYS_H
 
+#include "pipe/p_state.h"
+
 struct intel_context;
 struct pipe_context;
 struct pipe_winsys;
-struct pipe_buffer_handle;
+struct pipe_buffer;
 struct _DriBufferObject;
 
 struct pipe_winsys *
@@ -49,20 +51,21 @@ intel_create_i915simple( struct intel_context *intel,
                        struct pipe_winsys *winsys );
 
 
+struct intel_buffer {
+   struct pipe_buffer base;
+   struct _DriBufferObject *driBO;
+};
 
-/* Turn the pipe opaque buffer pointer into a dri_bufmgr opaque
- * buffer pointer...
- */
-static INLINE struct _DriBufferObject *
-dri_bo( struct pipe_buffer_handle *bo )
+static INLINE struct intel_buffer *
+intel_buffer( struct pipe_buffer *buf )
 {
-   return (struct _DriBufferObject *)bo;
+   return (struct intel_buffer *)buf;
 }
 
-static INLINE struct pipe_buffer_handle *
-pipe_bo( struct _DriBufferObject *bo )
+static INLINE struct _DriBufferObject *
+dri_bo( struct pipe_buffer *buf )
 {
-   return (struct pipe_buffer_handle *)bo;
+   return intel_buffer(buf)->driBO;
 }
 
 
diff --git a/src/mesa/drivers/dri/intel_winsys/intel_winsys_i915.c b/src/mesa/drivers/dri/intel_winsys/intel_winsys_i915.c
index 8e0eea4392..1ba6a9e1b2 100644
--- a/src/mesa/drivers/dri/intel_winsys/intel_winsys_i915.c
+++ b/src/mesa/drivers/dri/intel_winsys/intel_winsys_i915.c
@@ -85,7 +85,7 @@ static void intel_i915_batch_dword( struct i915_winsys *sws,
 }
 
 static void intel_i915_batch_reloc( struct i915_winsys *sws,
-			     struct pipe_buffer_handle *buf,
+			     struct pipe_buffer *buf,
 			     unsigned access_flags,
 			     unsigned delta )
 {
diff --git a/src/mesa/drivers/dri/intel_winsys/intel_winsys_pipe.c b/src/mesa/drivers/dri/intel_winsys/intel_winsys_pipe.c
index 43ed0602a4..910c0d2cc5 100644
--- a/src/mesa/drivers/dri/intel_winsys/intel_winsys_pipe.c
+++ b/src/mesa/drivers/dri/intel_winsys/intel_winsys_pipe.c
@@ -43,6 +43,7 @@
 #include "pipe/p_defines.h"
 #include "pipe/p_state.h"
 #include "pipe/p_util.h"
+#include "pipe/p_inlines.h"
 
 
 
@@ -65,7 +66,7 @@ intel_pipe_winsys( struct pipe_winsys *winsys )
 /* Most callbacks map direcly onto dri_bufmgr operations:
  */
 static void *intel_buffer_map(struct pipe_winsys *winsys, 
-			      struct pipe_buffer_handle *buf,
+			      struct pipe_buffer *buf,
 			      unsigned flags )
 {
    unsigned drm_flags = 0;
@@ -80,26 +81,17 @@ static void *intel_buffer_map(struct pipe_winsys *winsys,
 }
 
 static void intel_buffer_unmap(struct pipe_winsys *winsys, 
-			       struct pipe_buffer_handle *buf)
+			       struct pipe_buffer *buf)
 {
    driBOUnmap( dri_bo(buf) );
 }
 
 
 static void
-intel_buffer_reference(struct pipe_winsys *winsys,
-		       struct pipe_buffer_handle **ptr,
-		       struct pipe_buffer_handle *buf)
+intel_buffer_destroy(struct pipe_winsys *winsys,
+		     struct pipe_buffer *buf)
 {
-   if (*ptr) {
-      driBOUnReference( dri_bo(*ptr) );
-      *ptr = NULL;
-   }
-
-   if (buf) {
-      driBOReference( dri_bo(buf) );
-      *ptr = buf;
-   }
+   driBOUnReference( dri_bo(buf) );
 }
 
 
@@ -107,16 +99,21 @@ intel_buffer_reference(struct pipe_winsys *winsys,
  * for all buffers.
  * Grabs the hardware lock!
  */
-static struct pipe_buffer_handle *
+static struct pipe_buffer *
 intel_buffer_create(struct pipe_winsys *winsys, 
                     unsigned alignment, 
                     unsigned usage, 
                     unsigned size )
 {
-   struct _DriBufferObject *buffer;
+   struct intel_buffer *buffer = CALLOC_STRUCT( intel_buffer );
    struct intel_pipe_winsys *iws = intel_pipe_winsys(winsys);
    unsigned flags = 0;
 
+   buffer->base.refcount = 1;
+   buffer->base.alignment = alignment;
+   buffer->base.usage = usage;
+   buffer->base.size = size;
+
    if (usage & (PIPE_BUFFER_USAGE_VERTEX /*| IWS_BUFFER_USAGE_LOCAL*/)) {
       flags |= DRM_BO_FLAG_MEM_LOCAL | DRM_BO_FLAG_CACHED;
    } else {
@@ -143,20 +140,24 @@ intel_buffer_create(struct pipe_winsys *winsys,
 #endif
 
    driGenBuffers( iws->regionPool, 
-		  "pipe buffer", 1, &buffer, alignment, flags, 0 );
-   driBOData( buffer, size, NULL, 0 );
-   return pipe_bo(buffer);
+		  "pipe buffer", 1, &buffer->driBO, alignment, flags, 0 );
+
+   driBOData( buffer->driBO, size, NULL, 0 );
+
+   return &buffer->base;
 }
 
 
-static struct pipe_buffer_handle *
+static struct pipe_buffer *
 intel_user_buffer_create(struct pipe_winsys *winsys, void *ptr, unsigned bytes)
 {
-   struct _DriBufferObject *buffer;
+   struct intel_buffer *buffer = CALLOC_STRUCT( intel_buffer );
    struct intel_pipe_winsys *iws = intel_pipe_winsys(winsys);
+
    driGenUserBuffer( iws->regionPool, 
-                     "pipe user buffer", &buffer, ptr, bytes);
-   return pipe_bo(buffer);
+                     "pipe user buffer", &buffer->driBO, ptr, bytes);
+
+   return &buffer->base;
 }
 
 
@@ -224,7 +225,7 @@ intel_i915_surface_alloc_storage(struct pipe_winsys *winsys,
       return -1;
 
    if(ret) {
-      winsys->buffer_reference(winsys, &surf->buffer, NULL);
+      pipe_buffer_reference(winsys, &surf->buffer, NULL);
       return ret;
    }
    
@@ -239,7 +240,7 @@ intel_i915_surface_release(struct pipe_winsys *winsys, struct pipe_surface **s)
    surf->refcount--;
    if (surf->refcount == 0) {
       if (surf->buffer)
-	 winsys->buffer_reference(winsys, &surf->buffer, NULL);
+	 pipe_buffer_reference(winsys, &surf->buffer, NULL);
       free(surf);
    }
    *s = NULL;
@@ -279,7 +280,7 @@ intel_create_pipe_winsys( int fd )
    iws->winsys.user_buffer_create = intel_user_buffer_create;
    iws->winsys.buffer_map = intel_buffer_map;
    iws->winsys.buffer_unmap = intel_buffer_unmap;
-   iws->winsys.buffer_reference = intel_buffer_reference;
+   iws->winsys.buffer_destroy = intel_buffer_destroy;
    iws->winsys.flush_frontbuffer = intel_flush_frontbuffer;
    iws->winsys.printf = intel_printf;
    iws->winsys.get_name = intel_get_name;