1 files changed, 128 insertions, 0 deletions
diff --git a/src/mesa/pipe/i915simple/i915_winsys.h b/src/mesa/pipe/i915simple/i915_winsys.h
new file mode 100644
index 00000000000..514c53c7b21
--- /dev/null
+++ b/src/mesa/pipe/i915simple/i915_winsys.h
@@ -0,0 +1,128 @@
+/**************************************************************************
+ * 
+ * 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 I915_WINSYS_H
+#define I915_WINSYS_H
+
+#include "main/mtypes.h"
+
+/* This is the interface that softpipe requires any window system
+ * hosting it to implement.  This is the only include file in softpipe
+ * which is public.
+ */
+
+
+/* Pipe drivers are (meant to be!) independent of both GL and the
+ * window system.  The window system provides a buffer manager and a
+ * set of additional hooks for things like command buffer submission,
+ * etc.
+ *
+ * There clearly has to be some agreement between the window system
+ * driver and the hardware driver about the format of command buffers,
+ * etc.
+ */
+
+struct pipe_buffer_handle;
+
+struct i915_winsys {
+
+
+   /* The buffer manager is modeled after the dri_bugmgr interface,
+    * but this is the subset that i915 cares about.  Remember that
+    * i915 gets to choose the interface it needs, and the window
+    * systems must then implement that interface (rather than the
+    * other way around...).
+    *
+    * I915 only really wants to make system memory allocations,
+    * right?? 
+    */
+   struct pipe_buffer_handle *(*create_buffer)(struct i915_winsys *sws, 
+					       unsigned alignment );
+
+   void *(*buffer_map)( struct i915_winsys *sws, 
+			struct pipe_buffer_handle *buf );
+   
+   void (*buffer_unmap)( struct i915_winsys *sws, 
+			 struct pipe_buffer_handle *buf );
+
+   struct pipe_buffer_handle *(*buffer_reference)( struct i915_winsys *sws,
+						   struct pipe_buffer_handle *buf );
+
+   void (*buffer_unreference)( struct i915_winsys *sws, 
+			       struct pipe_buffer_handle **buf );
+
+   void (*buffer_data)(struct i915_winsys *sws, 
+		       struct pipe_buffer_handle *buf,
+		       unsigned size, const void *data );
+
+   void (*buffer_subdata)(struct i915_winsys *sws, 
+			  struct pipe_buffer_handle *buf,
+			  unsigned long offset, 
+			  unsigned long size, 
+			  const void *data);
+
+   void (*buffer_get_subdata)(struct i915_winsys *sws, 
+			      struct pipe_buffer_handle *buf,
+			      unsigned long offset, 
+			      unsigned long size, 
+			      void *data);
+
+
+   /* An over-simple batchbuffer mechanism.  Will want to improve the
+    * performance of this, perhaps based on the cmdstream stuff.  It
+    * would be pretty impossible to implement swz on top of this
+    * interface.
+    *
+    * Will also need additions/changes to implement static/dynamic
+    * indirect state.
+    */
+   unsigned *(*batch_start)( struct i915_winsys *sws,
+			     unsigned dwords,
+			     unsigned relocs );
+   void (*batch_dword)( struct i915_winsys *sws,
+			unsigned dword );
+   void (*batch_reloc)( struct i915_winsys *sws,
+			struct pipe_buffer_handle *buf,
+			unsigned access_flags,
+			unsigned delta );
+   void (*batch_flush)( struct i915_winsys *sws );
+   
+
+   /* Printf???
+    */
+   void (*dpf)( const char *fmt, ... );
+   
+};
+
+#define I915_BUFFER_ACCESS_WRITE   0x1 
+#define I915_BUFFER_ACCESS_READ    0x2
+
+
+struct pipe_context *i915_create( struct i915_winsys * );
+
+
+#endif