src/gallium/drivers/i915simple/i915_winsys.h

   1 /**************************************************************************
   2  *
   3  * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28 /**
  29  * \file
  30  * This is the interface that i915simple requires any window system
  31  * hosting it to implement.  This is the only include file in i915simple
  32  * which is public.
  33  *
  34  */
  35
  36 #ifndef I915_WINSYS_H
  37 #define I915_WINSYS_H
  38
  39
  40 #include "pipe/p_defines.h"
  41
  42
  43 #ifdef __cplusplus
  44 extern "C" {
  45 #endif
  46
  47
  48 /* Pipe drivers are (meant to be!) independent of both GL and the
  49  * window system.  The window system provides a buffer manager and a
  50  * set of additional hooks for things like command buffer submission,
  51  * etc.
  52  *
  53  * There clearly has to be some agreement between the window system
  54  * driver and the hardware driver about the format of command buffers,
  55  * etc.
  56  */
  57
  58 struct i915_batchbuffer;
  59 struct pipe_buffer;
  60 struct pipe_fence_handle;
  61 struct pipe_winsys;
  62 struct pipe_screen;
  63
  64
  65 /**
  66  * Additional winsys interface for i915simple.
  67  *
  68  * It is an over-simple batchbuffer mechanism.  Will want to improve the
  69  * performance of this, perhaps based on the cmdstream stuff.  It
  70  * would be pretty impossible to implement swz on top of this
  71  * interface.
  72  *
  73  * Will also need additions/changes to implement static/dynamic
  74  * indirect state.
  75  */
  76 struct i915_winsys {
  77
  78    void (*destroy)( struct i915_winsys *sws );
  79
  80    /**
  81     * Get the current batch buffer from the winsys.
  82     */
  83    struct i915_batchbuffer *(*batch_get)( struct i915_winsys *sws );
  84
  85    /**
  86     * Emit a relocation to a buffer.
  87     *
  88     * Used not only when the buffer addresses are not pinned, but also to
  89     * ensure refered buffers will not be destroyed until the current batch
  90     * buffer execution is finished.
  91     *
  92     * The access flags is a combination of I915_BUFFER_ACCESS_WRITE and
  93     * I915_BUFFER_ACCESS_READ macros.
  94     */
  95    void (*batch_reloc)( struct i915_winsys *sws,
  96                         struct pipe_buffer *buf,
  97                         unsigned access_flags,
  98                         unsigned delta );
  99
 100    /**
 101     * Flush the batch.
 102     */
 103    void (*batch_flush)( struct i915_winsys *sws,
 104                         struct pipe_fence_handle **fence );
 105 };
 106
 107 #define I915_BUFFER_ACCESS_WRITE   0x1
 108 #define I915_BUFFER_ACCESS_READ    0x2
 109
 110 #define I915_BUFFER_USAGE_LIT_VERTEX  (PIPE_BUFFER_USAGE_CUSTOM << 0)
 111
 112
 113 struct pipe_context *i915_create_context( struct pipe_screen *,
 114                                           struct pipe_winsys *,
 115                                           struct i915_winsys * );
 116
 117 #ifdef __cplusplus
 118 }
 119 #endif
 120
 121 #endif