1 files changed, 272 insertions, 0 deletions
diff --git a/src/mesa/drivers/x11/xm_winsys.c b/src/mesa/drivers/x11/xm_winsys.c
new file mode 100644
index 0000000000..ff33ad7850
--- /dev/null
+++ b/src/mesa/drivers/x11/xm_winsys.c
@@ -0,0 +1,272 @@
+/**************************************************************************
+ * 
+ * Copyright 2007 Tungsten Graphics, Inc., Bismarck, ND., USA
+ * 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 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
+ * THE COPYRIGHT HOLDERS, AUTHORS 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.
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ * 
+ * 
+ **************************************************************************/
+
+/*
+ * Authors:
+ *   Keith Whitwell
+ *   Brian Paul
+ */
+
+
+#include "glxheader.h"
+#include "xmesaP.h"
+#include "main/macros.h"
+
+#include "pipe/p_winsys.h"
+#include "pipe/softpipe/sp_winsys.h"
+
+
+struct xm_softpipe_winsys
+{
+   struct softpipe_winsys sws;
+   XMesaContext xmctx; /* not really needed */
+};
+
+
+struct xm_buffer
+{
+   int refcount;
+   int size;
+   void *data;
+   void *mapped;
+};
+
+
+
+/* Turn the softpipe opaque buffer pointer into a dri_bufmgr opaque
+ * buffer pointer...
+ */
+static inline struct xm_buffer *
+xm_bo( struct pipe_buffer_handle *bo )
+{
+   return (struct xm_buffer *) bo;
+}
+
+static inline struct pipe_buffer_handle *
+pipe_bo( struct xm_buffer *bo )
+{
+   return (struct pipe_buffer_handle *) bo;
+}
+
+/* Turn a softpipe winsys into an xm/softpipe winsys:
+ */
+static inline struct xm_softpipe_winsys *
+xm_softpipe_winsys(struct softpipe_winsys *sws)
+{
+   return (struct xm_softpipe_winsys *) sws;
+}
+
+
+/* Most callbacks map direcly onto dri_bufmgr operations:
+ */
+static void *
+xm_buffer_map(struct pipe_winsys *pws, struct pipe_buffer_handle *buf,
+              unsigned flags)
+{
+   struct xm_buffer *xm_buf = xm_bo(buf);
+   xm_buf->mapped = xm_buf->data;
+   return xm_buf->mapped;
+}
+
+static void
+xm_buffer_unmap(struct pipe_winsys *pws, struct pipe_buffer_handle *buf)
+{
+   struct xm_buffer *xm_buf = xm_bo(buf);
+   xm_buf->mapped = NULL;
+}
+
+
+static struct pipe_buffer_handle *
+xm_buffer_reference(struct pipe_winsys *pws, struct pipe_buffer_handle *buf)
+{
+   struct xm_buffer *xm_buf = xm_bo(buf);
+   xm_buf->refcount++;
+   return buf;
+}
+
+static void
+xm_buffer_unreference(struct pipe_winsys *pws, struct pipe_buffer_handle **buf)
+{
+   if (*buf) {
+      struct xm_buffer *xm_buf = xm_bo(*buf);
+      xm_buf->refcount--;
+      assert(xm_buf->refcount >= 0);
+      if (xm_buf->refcount == 0) {
+         if (xm_buf->data) {
+            free(xm_buf->data);
+            xm_buf->data = NULL;
+         }
+         free(xm_buf);
+      }
+      *buf = NULL;
+   }
+}
+
+static void
+xm_buffer_data(struct pipe_winsys *pws, struct pipe_buffer_handle *buf,
+               unsigned size, const void *data )
+{
+   struct xm_buffer *xm_buf = xm_bo(buf);
+   if (xm_buf->size != size) {
+      if (xm_buf->data)
+         free(xm_buf->data);
+      xm_buf->data = malloc(size);
+      xm_buf->size = size;
+   }
+   if (data)
+      memcpy(xm_buf->data, data, size);
+}
+
+static void
+xm_buffer_subdata(struct pipe_winsys *pws, struct pipe_buffer_handle *buf,
+                  unsigned long offset, unsigned long size, const void *data)
+{
+   struct xm_buffer *xm_buf = xm_bo(buf);
+   GLubyte *b = (GLubyte *) xm_buf->data;
+   assert(b);
+   memcpy(b + offset, data, size);
+}
+
+static void
+xm_buffer_get_subdata(struct pipe_winsys *pws, struct pipe_buffer_handle *buf,
+                      unsigned long offset, unsigned long size, void *data)
+{
+   const struct xm_buffer *xm_buf = xm_bo(buf);
+   const GLubyte *b = (GLubyte *) xm_buf->data;
+   assert(b);
+   memcpy(data, b + offset, size);
+}
+
+static void
+xm_flush_frontbuffer(struct pipe_winsys *pws)
+{
+   /*
+   struct intel_context *intel = intel_pipe_winsys(sws)->intel;
+   __DRIdrawablePrivate *dPriv = intel->driDrawable;
+   
+   intelCopyBuffer(dPriv, NULL);
+   */
+}
+
+static void
+xm_wait_idle(struct pipe_winsys *pws)
+{
+   /* no-op */
+}
+
+static void
+xm_printf(struct pipe_winsys *pws, const char *fmtString, ...)
+{
+   va_list args;
+   va_start( args, fmtString );  
+   vfprintf(stderr, fmtString, args);
+   va_end( args );
+}
+
+static const char *
+xm_get_name(struct pipe_winsys *pws)
+{
+   return "Xlib";
+}
+
+
+/* Softpipe has no concept of pools.  We choose the tex/region pool
+ * for all buffers.
+ */
+static struct pipe_buffer_handle *
+xm_buffer_create(struct pipe_winsys *pws, unsigned alignment)
+{
+   struct xm_buffer *buffer = CALLOC_STRUCT(xm_buffer);
+   buffer->refcount = 1;
+   return pipe_bo(buffer);
+}
+
+
+struct xmesa_pipe_winsys
+{
+   struct pipe_winsys winsys;
+   XMesaContext xmesa;
+};
+
+static struct pipe_winsys *
+xmesa_create_pipe_winsys( XMesaContext xmesa )
+{
+   struct xmesa_pipe_winsys *xws = CALLOC_STRUCT(xmesa_pipe_winsys);
+   
+   /* Fill in this struct with callbacks that pipe will need to
+    * communicate with the window system, buffer manager, etc. 
+    *
+    * Pipe would be happy with a malloc based memory manager, but
+    * the SwapBuffers implementation in this winsys driver requires
+    * that rendering be done to an appropriate _DriBufferObject.  
+    */
+   xws->winsys.buffer_create = xm_buffer_create;
+   xws->winsys.buffer_map = xm_buffer_map;
+   xws->winsys.buffer_unmap = xm_buffer_unmap;
+   xws->winsys.buffer_reference = xm_buffer_reference;
+   xws->winsys.buffer_unreference = xm_buffer_unreference;
+   xws->winsys.buffer_data = xm_buffer_data;
+   xws->winsys.buffer_subdata = xm_buffer_subdata;
+   xws->winsys.buffer_get_subdata = xm_buffer_get_subdata;
+   xws->winsys.flush_frontbuffer = xm_flush_frontbuffer;
+   xws->winsys.wait_idle = xm_wait_idle;
+   xws->winsys.printf = xm_printf;
+   xws->winsys.get_name = xm_get_name;
+   xws->xmesa = xmesa;
+
+   return &xws->winsys;
+}
+
+
+struct pipe_context *
+xmesa_create_softpipe(XMesaContext xmesa)
+{
+   struct xm_softpipe_winsys *isws = CALLOC_STRUCT( xm_softpipe_winsys );
+   
+   /* Fill in this struct with callbacks that softpipe will need to
+    * communicate with the window system, buffer manager, etc. 
+    *
+    * Softpipe would be happy with a malloc based memory manager, but
+    * the SwapBuffers implementation in this winsys driver requires
+    * that rendering be done to an appropriate xm_buffer.  
+    */
+#if 0
+   isws->sws.create_buffer = xm_create_buffer;
+   isws->sws.buffer_map = xm_buffer_map;
+   isws->sws.buffer_unmap = xm_buffer_unmap;
+   isws->sws.buffer_reference = xm_buffer_reference;
+   isws->sws.buffer_unreference = xm_buffer_unreference;
+   isws->sws.buffer_data = xm_buffer_data;
+   isws->sws.buffer_subdata = xm_buffer_subdata;
+   isws->sws.buffer_get_subdata = xm_buffer_get_subdata;
+#endif
+
+   /* Create the softpipe context:
+    */
+   return softpipe_create( xmesa_create_pipe_winsys(xmesa), &isws->sws );
+}