1 files changed, 162 insertions, 0 deletions
diff --git a/src/gallium/drivers/i915/i915_resource_buffer.c b/src/gallium/drivers/i915/i915_resource_buffer.c
new file mode 100644
index 00000000000..3f3c658e47c
--- /dev/null
+++ b/src/gallium/drivers/i915/i915_resource_buffer.c
@@ -0,0 +1,162 @@
+/**************************************************************************
+ * 
+ * Copyright 2006 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.
+ * 
+ **************************************************************************/
+ /*
+  * Authors:
+  *   Keith Whitwell <[email protected]>
+  *   Michel Dänzer <[email protected]>
+  */
+
+#include "pipe/p_context.h"
+#include "pipe/p_defines.h"
+#include "util/u_inlines.h"
+#include "util/u_format.h"
+#include "util/u_math.h"
+#include "util/u_memory.h"
+
+#include "i915_context.h"
+#include "i915_resource.h"
+#include "i915_screen.h"
+
+
+
+static boolean
+i915_buffer_get_handle(struct pipe_screen *screen,
+		       struct pipe_resource *resource,
+		       struct winsys_handle *handle)
+{
+   return FALSE;
+}
+
+static void
+i915_buffer_destroy(struct pipe_screen *screen,
+		    struct pipe_resource *resource)
+{
+   struct i915_buffer *buffer = i915_buffer(resource);
+   if (buffer->free_on_destroy)
+      align_free(buffer->data);
+   FREE(buffer);
+}
+
+
+static void *
+i915_buffer_transfer_map( struct pipe_context *pipe,
+			  struct pipe_transfer *transfer )
+{
+   struct i915_buffer *buffer = i915_buffer(transfer->resource);
+   return buffer->data + transfer->box.x;
+}
+
+
+static void
+i915_buffer_transfer_inline_write( struct pipe_context *rm_ctx,
+				   struct pipe_resource *resource,
+				   struct pipe_subresource sr,
+				   unsigned usage,
+				   const struct pipe_box *box,
+				   const void *data,
+				   unsigned stride,
+				   unsigned slice_stride)
+{
+   struct i915_buffer *buffer = i915_buffer(resource);
+
+   memcpy(buffer->data + box->x,
+	  data,
+	  box->width);
+}
+
+
+struct u_resource_vtbl i915_buffer_vtbl = 
+{
+   i915_buffer_get_handle,	     /* get_handle */
+   i915_buffer_destroy,		     /* resource_destroy */
+   NULL,			     /* is_resource_referenced */
+   u_default_get_transfer,	     /* get_transfer */
+   u_default_transfer_destroy,	     /* transfer_destroy */
+   i915_buffer_transfer_map,	     /* transfer_map */
+   u_default_transfer_flush_region,  /* transfer_flush_region */
+   u_default_transfer_unmap,	     /* transfer_unmap */
+   i915_buffer_transfer_inline_write /* transfer_inline_write */
+};
+
+
+
+struct pipe_resource *
+i915_buffer_create(struct pipe_screen *screen,
+                    const struct pipe_resource *template)
+{
+   struct i915_buffer *buf = CALLOC_STRUCT(i915_buffer);
+
+   if (!buf)
+      return NULL;
+
+   buf->b.b = *template;
+   buf->b.vtbl = &i915_buffer_vtbl;
+   pipe_reference_init(&buf->b.b.reference, 1);
+   buf->b.b.screen = screen;
+   
+   buf->data = MALLOC(template->width0);
+   buf->free_on_destroy = TRUE;
+
+   if (!buf->data)
+      goto err;
+
+   return &buf->b.b;
+
+err:
+   FREE(buf);
+   return NULL;
+}
+
+
+
+struct pipe_resource *
+i915_user_buffer_create(struct pipe_screen *screen,
+                        void *ptr,
+                        unsigned bytes,
+			unsigned bind)
+{
+   struct i915_buffer *buf = CALLOC_STRUCT(i915_buffer);
+
+   if (!buf)
+      return NULL;
+
+   pipe_reference_init(&buf->b.b.reference, 1);
+   buf->b.vtbl = &i915_buffer_vtbl;
+   buf->b.b.screen = screen;
+   buf->b.b.format = PIPE_FORMAT_R8_UNORM; /* ?? */
+   buf->b.b._usage = PIPE_USAGE_IMMUTABLE;
+   buf->b.b.bind = bind;
+   buf->b.b.flags = 0;
+   buf->b.b.width0 = bytes;
+   buf->b.b.height0 = 1;
+   buf->b.b.depth0 = 1;
+
+   buf->data = ptr;
+   buf->free_on_destroy = FALSE;
+
+   return &buf->b.b;
+}