src/mesa/drivers/dri/i965/intel_regions.h

   1 /**************************************************************************
   2  *
   3  * Copyright 2006 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 #ifndef INTEL_REGIONS_H
  29 #define INTEL_REGIONS_H
  30
  31 #include "mtypes.h"
  32 #include "bufmgr.h"             /* for DBG! */
  33 struct intel_context;
  34
  35 /* A layer on top of the bufmgr buffers that adds a few useful things:
  36  *
  37  * - Refcounting for local buffer references.
  38  * - Refcounting for buffer maps
  39  * - Buffer dimensions - pitch and height.
  40  * - Blitter commands for copying 2D regions between buffers.
  41  */
  42 struct intel_region {
  43    struct buffer *buffer;
  44    GLuint refcount;
  45    GLuint cpp;
  46    GLuint pitch;
  47    GLuint height;
  48    GLboolean tiled;
  49    GLubyte *map;
  50    GLuint map_refcount;
  51 };
  52
  53 /* Allocate a refcounted region.  Pointers to regions should only be
  54  * copied by calling intel_reference_region().
  55  *
  56  * No support for dynamically allocating tiled regions at this point.
  57  */
  58 struct intel_region *intel_region_alloc( struct intel_context *intel,
  59                                          GLuint cpp,
  60                                          GLuint pitch,
  61                                          GLuint height );
  62
  63 void intel_region_reference( struct intel_region **dst,
  64                              struct intel_region *src );
  65
  66 void intel_region_release(struct intel_context *intel,
  67                           struct intel_region **ib );
  68
  69 /* Static regions may be tiled.  The assumption is that the X server
  70  * has set up fence registers to define tiled zones in agp and these
  71  * buffers are within those zones.  Tiling regions without fence
  72  * registers is more work.
  73  */
  74 struct intel_region *intel_region_create_static( struct intel_context *intel,
  75                                                  GLuint mem_type,
  76                                                  GLuint offset,
  77                                                  void *virtual,
  78                                                  GLuint cpp,
  79                                                  GLuint pitch,
  80                                                  GLuint height,
  81                                                  GLuint size,
  82                                                  GLboolean tiled );
  83
  84 /* Map/unmap regions.  This is refcounted also:
  85  */
  86 GLubyte *intel_region_map(struct intel_context *intel,
  87                        struct intel_region *ib);
  88
  89 void intel_region_unmap(struct intel_context *intel,
  90                         struct intel_region *ib);
  91
  92
  93 /* Upload data to a rectangular sub-region
  94  */
  95 GLboolean intel_region_data(struct intel_context *intel,
  96                             struct intel_region *dest,
  97                             GLuint dest_offset,
  98                             GLuint destx, GLuint desty,
  99                             const void *src, GLuint src_stride,
 100                             GLuint srcx, GLuint srcy,
 101                             GLuint width, GLuint height);
 102
 103 /* Copy rectangular sub-regions
 104  */
 105 void intel_region_copy( struct intel_context *intel,
 106                         struct intel_region *dest,
 107                         GLuint dest_offset,
 108                         GLuint destx, GLuint desty,
 109                         struct intel_region *src,
 110                         GLuint src_offset,
 111                         GLuint srcx, GLuint srcy,
 112                         GLuint width, GLuint height );
 113
 114 /* Fill a rectangular sub-region
 115  */
 116 void intel_region_fill( struct intel_context *intel,
 117                         struct intel_region *dest,
 118                         GLuint dest_offset,
 119                         GLuint destx, GLuint desty,
 120                         GLuint width, GLuint height,
 121                         GLuint color );
 122
 123
 124 /***********************************************************************
 125  * Misc utilities: move to somewhere generic
 126  */
 127 void _mesa_copy_rect( GLubyte *dst,
 128                       GLuint cpp,
 129                       GLuint dst_pitch,
 130                       GLuint dst_x,
 131                       GLuint dst_y,
 132                       GLuint width,
 133                       GLuint height,
 134                       const GLubyte *src,
 135                       GLuint src_pitch,
 136                       GLuint src_x,
 137                       GLuint src_y );
 138
 139
 140 #endif