1 files changed, 139 insertions, 0 deletions
diff --git a/src/gallium/include/pipe/p_screen.h b/src/gallium/include/pipe/p_screen.h
new file mode 100644
index 00000000000..3bedc752947
--- /dev/null
+++ b/src/gallium/include/pipe/p_screen.h
@@ -0,0 +1,139 @@
+/**************************************************************************
+ * 
+ * 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.
+ * 
+ **************************************************************************/
+
+/**
+ * @file
+ * 
+ * Screen, Adapter or GPU
+ *
+ * These are driver functions/facilities that are context independent.
+ */
+
+
+#ifndef P_SCREEN_H
+#define P_SCREEN_H
+
+
+#include "pipe/p_compiler.h"
+#include "pipe/p_state.h"
+
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+
+/**
+ * Gallium screen/adapter context.  Basically everything
+ * hardware-specific that doesn't actually require a rendering
+ * context.
+ */
+struct pipe_screen {
+   struct pipe_winsys *winsys;
+
+   void (*destroy)( struct pipe_screen * );
+
+
+   const char *(*get_name)( struct pipe_screen * );
+
+   const char *(*get_vendor)( struct pipe_screen * );
+
+   /**
+    * Query an integer-valued capability/parameter/limit
+    * \param param  one of PIPE_CAP_x
+    */
+   int (*get_param)( struct pipe_screen *, int param );
+
+   /**
+    * Query a float-valued capability/parameter/limit
+    * \param param  one of PIPE_CAP_x
+    */
+   float (*get_paramf)( struct pipe_screen *, int param );
+
+   /**
+    * Check if the given pipe_format is supported as a texture or
+    * drawing surface.
+    * \param tex_usage  bitmask of PIPE_TEXTURE_USAGE_*
+    * \param flags  bitmask of PIPE_TEXTURE_GEOM_*
+    */
+   boolean (*is_format_supported)( struct pipe_screen *,
+                                   enum pipe_format format,
+                                   enum pipe_texture_target target,
+                                   unsigned tex_usage, 
+                                   unsigned geom_flags );
+
+   /**
+    * Create a new texture object, using the given template info.
+    */
+   struct pipe_texture * (*texture_create)(struct pipe_screen *,
+                                           const struct pipe_texture *templat);
+
+   /**
+    * Create a new texture object, using the given template info, but on top of 
+    * existing memory.
+    * 
+    * It is assumed that the buffer data is layed out according to the expected
+    * by the hardware. NULL will be returned if any inconsistency is found.  
+    */
+   struct pipe_texture * (*texture_blanket)(struct pipe_screen *,
+                                            const struct pipe_texture *templat,
+                                            const unsigned *pitch,
+                                            struct pipe_buffer *buffer);
+
+   void (*texture_release)(struct pipe_screen *,
+                           struct pipe_texture **pt);
+
+   /** Get a surface which is a "view" into a texture */
+   struct pipe_surface *(*get_tex_surface)(struct pipe_screen *,
+                                           struct pipe_texture *texture,
+                                           unsigned face, unsigned level,
+                                           unsigned zslice,
+                                           unsigned usage );
+
+   /* Surfaces allocated by the above must be released here:
+    */
+   void (*tex_surface_release)( struct pipe_screen *,
+                                struct pipe_surface ** );
+   
+
+   void *(*surface_map)( struct pipe_screen *,
+                         struct pipe_surface *surface,
+                         unsigned flags );
+
+   void (*surface_unmap)( struct pipe_screen *,
+                          struct pipe_surface *surface );
+   
+};
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* P_SCREEN_H */