src/mesa/drivers/dri/intel/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
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   9  * without limitation the rights to use, copy, modify, merge, publish,
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  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
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  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 /** @file intel_regions.h
  32  *
  33  * Structure definitions and prototypes for intel_region handling,
  34  * which is the basic structure for rectangular collections of pixels
  35  * stored in a drm_intel_bo.
  36  */
  37
  38 #include <xf86drm.h>
  39
  40 #include "main/mtypes.h"
  41 #include "intel_bufmgr.h"
  42
  43 struct intel_context;
  44 struct intel_buffer_object;
  45
  46 /**
  47  * A layer on top of the bufmgr buffers that adds a few useful things:
  48  *
  49  * - Refcounting for local buffer references.
  50  * - Refcounting for buffer maps
  51  * - Buffer dimensions - pitch and height.
  52  * - Blitter commands for copying 2D regions between buffers. (really???)
  53  */
  54 struct intel_region
  55 {
  56    drm_intel_bo *buffer;  /**< buffer manager's buffer */
  57    GLuint refcount; /**< Reference count for region */
  58    GLuint cpp;      /**< bytes per pixel */
  59    GLuint width;    /**< in pixels */
  60    GLuint height;   /**< in pixels */
  61    GLuint pitch;    /**< in pixels */
  62    GLubyte *map;    /**< only non-NULL when region is actually mapped */
  63    GLuint map_refcount;  /**< Reference count for mapping */
  64
  65    uint32_t tiling; /**< Which tiling mode the region is in */
  66
  67    uint32_t name; /**< Global name for the bo */
  68    struct intel_screen *screen;
  69 };
  70
  71
  72 /* Allocate a refcounted region.  Pointers to regions should only be
  73  * copied by calling intel_reference_region().
  74  */
  75 struct intel_region *intel_region_alloc(struct intel_screen *screen,
  76                                         uint32_t tiling,
  77                                         GLuint cpp, GLuint width,
  78                                         GLuint height,
  79                                         GLboolean expect_accelerated_upload);
  80
  81 struct intel_region *
  82 intel_region_alloc_for_handle(struct intel_screen *screen,
  83                               GLuint cpp,
  84                               GLuint width, GLuint height, GLuint pitch,
  85                               unsigned int handle, const char *name);
  86
  87 GLboolean
  88 intel_region_flink(struct intel_region *region, uint32_t *name);
  89
  90 void intel_region_reference(struct intel_region **dst,
  91                             struct intel_region *src);
  92
  93 void intel_region_release(struct intel_region **ib);
  94
  95 void intel_recreate_static_regions(struct intel_context *intel);
  96
  97 /* Map/unmap regions.  This is refcounted also:
  98  */
  99 GLubyte *intel_region_map(struct intel_context *intel,
 100                           struct intel_region *ib);
 101
 102 void intel_region_unmap(struct intel_context *intel, struct intel_region *ib);
 103
 104
 105 /* Upload data to a rectangular sub-region
 106  */
 107 void intel_region_data(struct intel_context *intel,
 108                        struct intel_region *dest,
 109                        GLuint dest_offset,
 110                        GLuint destx, GLuint desty,
 111                        const void *src, GLuint src_stride,
 112                        GLuint srcx, GLuint srcy, GLuint width, GLuint height);
 113
 114 /* Copy rectangular sub-regions
 115  */
 116 GLboolean
 117 intel_region_copy(struct intel_context *intel,
 118                   struct intel_region *dest,
 119                   GLuint dest_offset,
 120                   GLuint destx, GLuint desty,
 121                   struct intel_region *src,
 122                   GLuint src_offset,
 123                   GLuint srcx, GLuint srcy, GLuint width, GLuint height,
 124                   GLboolean flip,
 125                   GLenum logicop);
 126
 127 drm_intel_bo *intel_region_buffer(struct intel_context *intel,
 128                                   struct intel_region *region,
 129                                   GLuint flag);
 130
 131 void _mesa_copy_rect(GLubyte * dst,
 132                 GLuint cpp,
 133                 GLuint dst_pitch,
 134                 GLuint dst_x,
 135                 GLuint dst_y,
 136                 GLuint width,
 137                 GLuint height,
 138                 const GLubyte * src,
 139                 GLuint src_pitch, GLuint src_x, GLuint src_y);
 140
 141 struct __DRIimageRec {
 142    struct intel_region *region;
 143    GLenum internal_format;
 144    GLuint format;
 145    GLenum data_type;
 146    void *data;
 147 };
 148
 149 #endif